MPS3000+ User Guide MPS3000 INSTRUCTION MANUAL 08 06 2009

2016-06-06

: Pdf Mps3000 Instruction Manual 08 06 2009 MPS3000_INSTRUCTION_MANUAL_08_06_2009 Specs Solcon

Open the PDF directly: View PDF PDF.
Page Count: 66

DownloadMPS3000+ User Guide  MPS3000 INSTRUCTION MANUAL 08 06 2009
Open PDF In BrowserView PDF
MPS 3000

Motor Protection System

Instruction Manual
Ver. 06 August 2009

2 • Table of Contents
1. Table of Contents
1.
2.

Table of Contents........................................................................................................................... 2
Introduction .................................................................................................................................... 4
2.1.
Protection Features ................................................................................................................... 4
2.2.
Control Features........................................................................................................................ 5
2.3.
Supervision and Communication Features ............................................................................... 5
3.
Wiring Diagrams............................................................................................................................. 6
3.1.
Wiring Diagram – MPS3000...................................................................................................... 6
3.2.
Wiring Diagram – MPS3000-C .................................................................................................. 7
4.
Rear Panel – MPS 3000 and MPS 3000-C .................................................................................... 8
5.
MPS 3000 Terminals...................................................................................................................... 9
5.1.
Auxiliary Power Supply.............................................................................................................. 9
5.2.
Current & Voltage & Temperature (RTD, Thermistor) Inputs .................................................... 9
5.3.
Line Voltages............................................................................................................................. 9
5.4.
Line Currents............................................................................................................................. 9
5.5.
Ground Fault Current ................................................................................................................ 9
5.6.
Temperature Sensors................................................................................................................ 9
5.7.
Analog Outputs........................................................................................................................ 10
5.8.
Analog Inputs .......................................................................................................................... 10
5.9.
MPS3000-C Discrete Inputs.................................................................................................... 11
5.10. Output Relays.......................................................................................................................... 13
5.11. Serial Link................................................................................................................................ 14
6.
C/Ts Wiring Diagrams .................................................................................................................. 15
6.1.
Three C/Ts + Ground Fault Core Balance C/T........................................................................ 15
6.2.
Three C/T's in a Residual Ground Fault Connection............................................................... 15
7.
Front Panel Overview and Settings.............................................................................................. 16
7.1.
Front Panel Settings................................................................................................................ 17
7.1.1. Startup................................................................................................................................. 17
7.1.2. Reset to Factory Default Values.......................................................................................... 17
7.2.
Messages ................................................................................................................................ 17
7.2.1. Blinking Messages .............................................................................................................17
7.2.2. Solid Messages ................................................................................................................... 18
7.3.
Menu Navigation Top .............................................................................................................. 19
7.3.1. SYSTEM PARAMETER SETTINGS ................................................................................... 19
7.3.2. MEASURED DATA ............................................................................................................. 19
7.3.3. TEST / MAINTENANCE ...................................................................................................... 19
8.
Set Pages and Default Parameters.............................................................................................. 20
9.
PARAMETERS SETTINGS PAGES ............................................................................................ 23
9.1.
SYSTEM PARAMETER SETTINGS ....................................................................................... 23
9.2.
VOLTAGE SETTINGS ............................................................................................................27
9.3.
CURRENT SETTINGS............................................................................................................28
9.4.
OVERLOAD SETTINGS ......................................................................................................... 29
9.5.
POWER SETTINGS................................................................................................................31
9.6.
TEMPERATURE SETTINGS .................................................................................................. 32
9.7.
ANALOG I/O SETTINGS......................................................................................................... 33
9.8.
COMMUNICATION P. SETTINGS.......................................................................................... 35
9.9.
TRIPPING/ALARM OPTIONS................................................................................................. 36
9.9.1. Tripping Alarm Common Settings ....................................................................................... 36
9.9.2. Multiple Alarm/Trip Considerations ..................................................................................... 38
9.9.3. Tripping/Alarm Individual Settings....................................................................................... 39
9.9.3.1. MAX START TIME ........................................................................................................... 39
9.9.3.2. TOO MANY STARTS ....................................................................................................... 39
9.9.3.3. UNDER CURRENT LEVEL 1 ........................................................................................... 39
9.9.3.4. UNDER CURRENT LEVEL 2 ........................................................................................... 39
9.9.3.5. LOAD INCREASE ............................................................................................................ 39
9.9.3.6. OVER CURRENT LEVEL 1- JAM .................................................................................... 40
9.9.3.7. OVER CURRENT LEVEL 2 - SHORT............................................................................ 40
9.9.3.8. THERMAL LEVEL 1 and 2 ............................................................................................... 40
9.9.3.9. UNBALANCE LEVEL 1 .................................................................................................... 43
__________________________________________________________________________________

3 • Table of Contents
9.9.3.10. UNBALANCE LEVEL 2 .................................................................................................... 44
9.9.3.11. Setting U/B LEVEL 2 MAX T ............................................................................................ 44
9.9.3.12. U/V LEVEL (Undervoltage Level) ..................................................................................... 45
9.9.3.13. O/V LEVEL 1 (Over Voltage Level 1) .............................................................................. 45
9.9.3.14. O/V LEVEL 2 (Over Voltage Level 2) .............................................................................. 45
9.9.3.15. PHASE LOSS................................................................................................................... 45
9.9.3.16. PHASE SEQUENCE ........................................................................................................ 45
9.9.3.17. GND FAULT LEVEL 1 (Ground Fault Level 1) ................................................................ 45
9.9.3.18. GND FAULT LEVEL 2 (Ground Fault Level 2) ................................................................ 45
9.9.3.19. COMM. PORT FAILED (Communication Port Failed)...................................................... 45
9.9.3.20. INTERNAL FAILURE........................................................................................................ 46
9.9.3.21. CONTROL CIR. OPEN & WELDED CONTACTOR (Control Circuit Open & Welded
Contactor) ......................................................................................................................................... 46
9.9.3.22. EXTERNAL FAULT 1 / 2 / 3 ............................................................................................. 46
9.9.3.23. RTD 1-10, LEVEL 1-2 (Temperature 1.. 10 Level 1.. 2) ................................................. 46
9.9.3.24. UNDER PWR LVL 1 (Under Power Level 1) .................................................................... 47
9.9.3.25. UNDER PWR LVL 2 (Under Power Level 2) .................................................................... 47
9.9.3.26. LOW POWER FACTOR ................................................................................................... 47
9.9.3.27. ANALOG INPUTS FAULTS.............................................................................................. 47
9.9.4. Tripping/Alarm Default Settings........................................................................................... 48
9.9.4.1. Added Options Available in the MPS3000 Which Correspond to ANSI Codes ................ 48
10.
DATA PAGES - MENUS .............................................................................................................. 49
10.1. MEASURED DATA ................................................................................................................. 49
10.2. CALCULATED DATA .............................................................................................................. 50
10.3. LOGICAL INPUTS CONTACT STATUS ................................................................................. 51
10.4. STATISTICAL DATA ...............................................................................................................53
10.5. FAULT DATA .......................................................................................................................... 54
11.
Test / Maintenance Options ......................................................................................................... 55
12.
Communication – Serial Link ....................................................................................................... 57
13.
Technical Specifications............................................................................................................... 58
14.
Case and Cutout Details .............................................................................................................. 60
15.
Appendix A - Changes From MPC 2000 to MPS 3000 ................................................................ 61
16.
Appendix B – Parameters List and Factory Default Settings ....................................................... 62
17.
Appendix C – Ordering Information.............................................................................................. 66

Note
Installation, operation and maintenance should be in strict accordance with the
instructions in this manual, national codes and good practice. Installation or operation not
performed in strict accordance with these instructions shall void the manufacturer's
warranty.

Note
Disconnect all power inputs before wiring or servicing the equipment.

Warning
Unit must be grounded to insure correct operation and safety.

__________________________________________________________________________________

4 • Introduction
2. Introduction
The MPS 3000 Motor Protection System is a new generation of micro processor based relay / controller
designed to operate with a three (3) phase induction motors.
True RMS voltages and currents are measured at a sampling rate of 0.5 ms, enables the MPS3000 to be
used with electronic motor drives like soft starters.
The MPS3000 incorporates two main features.
a. Motor protection.
b. Supervision and communication.
The MPS3000-C is identical to MPS3000, but incorporates in addition to all MPS3000 features, also:
c. Motor control.
2.1.

Protection Features

AC motors are very rugged and reliable when operating within product specification limits. However, they
are usually designed to operate close to their rated limits with minimal margins for operating under
abnormal conditions.
A comprehensive protection device is required to accurately create a Thermal Modeling, in order to allow
motor run safely up to its limits. The Thermal Model is based mainly on currents, but it may be biased also
by RTD and by Unbalance Currents.
This relay should protect the motor from abnormal conditions in the mains voltage, motor and cabling faults
as well as operator malfunctions.
The MPS3000 monitors three phase voltages, three phase + ground fault currents, temperature inputs from
up to 10 sensors, Four analog inputs and four programmable Discrete (Optically isolated logical) inputs. The
MPS3000-C incorporates additional 16 discrete digital inputs.
The MPS3000 incorporates four programmable Analog Outputs as well as four programmable output
change-over (form C) relays. One or more relays can be configured as Trip and / or Alarm. All inputs and
outputs are combined to provide the most comprehensive protection package.
The MPS3000 can handle 52 different trips / alarms.
Voltage base protections

Under-voltage, Over-voltage, Phase-loss, Phase
sequence, Maximum start time.

Current base protections

Too many starts, Under current, Load increase,
Over-current level 1 (Stall/Locked protection),
Over-current level 2 (Short circuit) Thermal
Overload, Unbalanced current, Ground fault
current.

Voltage/Current based protections

Under power, Low power factor.

Temperature based

Up to 10 sensors (10 RTDs are standard or
optionally 6 RTDs + 4 thermistors).

General based protection

Control circuit fault (C only), Welded contact (C
only), Three external faults, Comm. Port Failure.

Analog Inputs based protection

For external devices such as Vibration sensor.

Two levels for most faults

Usually used for Alarm and Trip.

Protection levels and time delay settings are individually configured using the key pad on the front panel or
through communication.
__________________________________________________________________________________

5 • Introduction
Unique Tripping / Alarm options make it possible to program any fault as an Alarm, Trip, both or none. This
unique facility also enables controlled fault Reset possibilities. Authorized key, extends the reset
possibilities.
A unique calculated TIME TO TRIP feature allows the operator or host computer to take corrective actions
before tripping.
2.2.

Control Features

The MPS3000-C has the same functionality as the MPS3000 and also incorporates also control capabilities.
It can control various starting methods like Direct Online, Star Delta, Soft Starters, Reversing and Two
Speeds.
Twenty optically isolated logic inputs are used to enable many types of control: Local, remote (for PLC
without serial link) or through RS485 serial link.
Two or three relays may be used to control DOL (direct online), Star/Delta, Soft-starters, Two Speed and
Reversing -starting.
Throughout the entire document MPS3000–C information is written over a gray background. Please ignore
this information for the MPS3000.
2.3.

Supervision and Communication Features

A Liquid Crystal Display (LCD), together with a keypad and LEDs enables user friendly interface, accurate
digital parameters setting, actual parameters readings, and detailed trip and alarm message displays.
Unauthorized setting changes can easily be prevented by the correct use of the Authorized key input
terminals or a dedicated parameter: PARAM. SETTING (LOCKED or NOT LOCKED.
Measured data
Calculated data
Logic inputs status
Statistical data
Fault data
Fault Simulation –

Phase and line voltages, Phase currents, Ground fault current, Power, Reactive
Power, Power factor, RTD temperatures (thermistor resistances) and Analog
Inputs.
Motor load in % of FLC, Equivalent motor current, Unbalance current, Thermal
Capacity, Time to trip, Time to start.
Individual status of all input contacts.
Motors running hours, Total number of starts, Total number of trips, Last start
time, last start peak current, Total Energy, minimum and maximum values of
voltage, current and frequency.
Last Trip, Last Alarm, Phase currents at time of trip, Ground fault current at time
of trip, Phase voltages at time of trip, last 10 faults with time and date stamp.
Special Test / Maintenance page allows simulation (only during first 10 hours
from auxiliary supply power up) by setting voltages currents and temperature
“actual” values. The Simulation mode can be used for periodic testing of the
relay. It can be used also for getting familiar with the MPS3000 modes of
operation and features.

RS485 serial link (with MODBUS RTU communication protocol), operating at baud rate of 1200 to 38400
bps enables monitoring of both the "set page" and actual parameters. Changes of the "set page"
parameters through the serial link make it very easy to enter user’s set points in place of the factory default
parameters. The serial link enables remote control of both the MPS3000 and the motor.
RS485 enables 32 MPS3000 units to be connected on the same link to the host computer. When a need for
more than 32 units arises, using MMI & Data highway equipment non limited number of MPS3000's can be
connected to a host computer.

__________________________________________________________________________________

6 • Wiring Diagrams

3. Wiring Diagrams
3.1.

Wiring Diagram – MPS3000

__________________________________________________________________________________

7 • Wiring Diagrams
3.2.

Wiring Diagram – MPS3000-C

__________________________________________________________________________________

8 • Rear Panel – MPS 3000 and MPS 3000-C
4. Rear Panel – MPS 3000 and MPS 3000-C

__________________________________________________________________________________

9 • MPS 3000 Terminals
5. MPS 3000 Terminals
5.1.
Auxiliary Power Supply
85…230VDC or AC (50/60) Hz
Phase or DC (+)……………..……………61
Neutral or DC (-)…………………………..62
Ground…………………………………… 63

With option (-S) for separate Aux. Power Supply and
Control Voltage:
Phase or DC (+) ...................................... 64
Neutral or DC (-) .................................... 65

5.2.
Current & Voltage & Temperature (RTD, Thermistor) Inputs
The MPS3000 can measure: Three voltages analog inputs, four currents analog inputs and ten
temperature sensors. True RMS measurement is used both for voltages and currents. Frequency
should be in the range of 45-66 Hz. All current and voltage analog inputs incorporate internal isolating
transformers.
5.3.
Line Voltages
Direct connection of line to line voltages up to 690 VAC. For higher voltages, up to 25 KV, V/Ts must
be used.
Voltage terminals are:
Phase L1 .................................................78
Phase L2 .................................................79
Phase L3 .................................................80
Neutral (when used)….......................... 81
Notes:
1. Line voltages must be connected for frequency sensing. If voltage analog inputs are not
available, currents measurement is accurate only if frequency is 50Hz or 60Hz, as set.
2. For low voltage mains, all three phase voltages must be connected as shown in the
wiring diagram.
3. For Medium and high voltage systems, when only a single V/T is used:
• Connect V/T primary to mains V12 (“live” to V1 and “return” to V2).
• Connect V/T secondary: “live” to phase voltage inputs (78, 79, and 80) and
“return” to neutral input (81).
• Decrease primary voltage setting by a 1.73 factor. In this type of connection,
Line to Line voltage is connected to Line to Neutral input.
• MPS3000 cannot detect phase sequence. A positive phase sequence is
assumed.
For Medium and high voltage systems, when system voltage VTs are not available and AC power
supply is used, connect auxiliary power supply (61) to phase voltage inputs (78,79, 80) and (62) to
neutral input (81).
5.4.
Line Currents
Currents measured through C/T secondary of 5 A or 1 A.
Phase L1 ... 1A, 5A, Comm. ................. 82, 83, 84
Phase L2 ... 1A, 5A, Comm. ................. 85, 86, 87
Phase L3 ... 1A, 5A, Comm. ................. 88, 89, 90
Note: Power and Power Factor can be calculated only if three voltage inputs and three current inputs
are applied to the MPS3000.
5.5.
Ground Fault Current
Currents measured through a differential C/T with a secondary of 5 A or 1A.
All phases..1A, 5A, COMM.................. 91, 92, 93
Note: It is recommended to use Core Balance C/T. If a Core Balance C/T is not available, Ground Fault
can be measured according to C/T Wiring Diagrams on section 6.2 Page 15.
5.6.
Temperature Sensors
The MPS3000 can accept inputs from Up to 10 RTDs of the following types:
• Copper 10 Ohm
• Platinum 100 Ohm
• Nickel 120 Ohm
LCD display is in °C (Refer to resistance/temperature table on page 47).
__________________________________________________________________________________

10 • MPS 3000 Terminals
Notes:
1. All sensors must be of same type.
2. An optional unit with 6 RTDs and 4 thermistors (No. 7...No. 10) is available.
RTDs three wire measurement system is used to compensate for cable resistance. (max. cable
resistance allowed is 25% of sensor resistance at 0°C). Only two wires are used for thermistor.
T1 ................................................. 66+67, 68
T2 ................................................. 69+70, 71
T3 ................................................. 72+73, 74
T4 ................................................. 75+76, 77
T5 ................................................. 100+101, 102
T6 ................................................. 103+104, 105
T7 ................................................. 106+107, 108 (Leave 106 open for thermistor, see note 2 above)
T8 ................................................. 109+110, 111 (Leave 109 open for thermistor, see note 2 above)
T9 ................................................. 112+113, 114 (Leave 112 open for thermistor, see note 2 above)
T10 ................................................ 115+116, 117 (Leave 115 open for thermistor, see note 2 above)
Note: If Temp sensors are not used, leave all relevant terminals open. Disable all the relevant Trip and
Alarms.
Twisted and Shielded cables must be used for all temperature inputs. Shield should be connected to
Chassis Ground externally, near the MPS3000.
5.7.
Analog Outputs
The MPS3000 incorporates four programmable analog outputs. Outputs type can be programmed to
4..20 mA or 0..20 mA. Load resistance should be less than 400Ω. The four outputs share one common
point. 0..1 mA type is also available. Each output can be configured to represent one of twenty different
parameters. Outputs are updated every 100mS. Range of parameter for each output is fully
programmable.
Analog Out 1
.................................. 121
Analog Out 2
.................................. 122
Analog Out 3
.................................. 123
Analog Out 4
.................................. 124
Analog Out Common ..............….......... 125
Note: The analog outputs electronics is isolated as one group together with the Analog inputs (and with
the Temperature input) circuits. Please note that only one common connection (Ground) have to be
used for the analog inputs and outputs. (The Temperature input wires are normally individually isolated,
so they have no common connection).
Twisted and Shielded cable must be used for all analog outputs. Shield should be connected to Chassis
Ground externally, near the MPS3000.
5.8.
Analog Inputs
The MPS3000 incorporates four programmable analog Inputs. Each input can be individually
programmed for 4..20 mA or 0..20 mA types. The four inputs share one common point. 0..1 model is
available. A fault protection is assigned for each analog input. Level and time delay is adjustable for
each input. Scan cycle time: 100mS.
Analog In 1
................ ..................... 126
Analog In 2
...................................... 127
Analog In 3
...................................... 128
Analog In 4
...................................... 129
Analog In Common ............................... 130
Note: The analog inputs electronics is isolated as one group together with the Analog outputs (and with
the Temperature input) circuits. Please note that only one common connection (Ground) have to be
used for the analog inputs and outputs. (The Temperature input wires are normally individually isolated,
so they have no common connection).
Twisted and Shielded cable must be used for all analog inputs. Shield should be connected to Chassis
Ground externally, near the MPS3000.

__________________________________________________________________________________

11 • MPS 3000 Terminals

5.9.

MPS3000-C Discrete Inputs

Local Start-A .................................... 1&24
Close the contact to operate contactor A. Maintained or Momentary contacts can be used.
Local Start-B .................................... 2&25
Close the contact to operate contactor B. Maintained or Momentary contacts can be used.
Used for low speed of two speed motor and for reversing applications.
Leave open if not used.
Local Stop .......................................... 3&26
Open the contact to stop the motor. Maintained or Momentary contacts can be used.
Note: Open contact override any other inputs and force stop condition
Local/Remote ................................... 4&27
Open - For Local control
Closed - For Remote control
When contact is open, Motor can be locally started by above Local Start-A or Local Start-B contacts.
For safety reasons, Local Stop is always active, even if Local/Remote contact is in Remote position.
PLC/Serial Port ............................... 5&28
Open - For PLC control
Closed - For Serial Port control
Operative only when Local/Remote input is in closed (Remote) position. Determines if control commands
are accepted from PLC or Serial Port inputs.
PLC Reset .......................................... 6&29
MPS3000 fault reset through momentary N.O contact.
(See default authorization table section 9.9.1 page 36)
PLC control-A ................................... 7&30
Maintained N.O contact
Open - To stop motor.
Closed - To operate contactor A and start the motor.
PLC Control-B .................................. 8&31
Maintained N.O contact.
Open - To stop motor.
Closed - To operate contactor B and start the motor. Used for low speed of two speed motor and for
reversing applications.
Speed Switch ..................................... 9&32
Open - indicating that motor minimum speed has been reached
Closed- indicating that motor minimum speed has not been reached.
Indicates that the motor is turning. Leave input open if speed switch is not used.
Plant Interlock ...................................10&33
Open - To prevent operation
Closed - To enable operation
Permits additional systems interlocking.
If not used, Contact MUST be closed.
Authorized Key ................................ 11&34
Open - Disabled
Closed - To enable the following:
Note: For MPS3000, any one of the four discrete inputs (terminals 13..16) can be configured as
Authorized key.

__________________________________________________________________________________

12 • MPS 3000 Terminals
* Change of parameters (through keyboard).
* Reset of any alarm/trip, regardless setting.
* Reset of the thermal capacity.
* Run self test.
* Store default settings.
* Reset and store of statistical data.
External Fault 1 ................................ 12&35
Open – Run Enable
Closed - Fault
If not used, disable Alarm and Trip for External fault 1 in the MPS3000 setting, (see tripping and alarm
setting table section 9.9.4 page 48).
The following four logical inputs, Discrete Input A to Discrete Input D, are common to both MPS3000 and
the MPS3000-C.
Discrete Input A contact ........................ 13&36
Discrete Input B contact ........................ 14&37
Discrete Input C contact ........................ 15&38
Discrete Input D contact ....................... .16&39
Each of the above four discrete inputs can be configured for many applications. (like Emergency Restart,
Low speed of two speed motor, Remote Reset and External Faults).
Isolator
Aux. contacts of a local Isolator switch. Prevents contactors operation when the isolator is open. Start is
enabled Only if 17-40 is open and 18-41 is closed. (e.g. Isolator is closed).
N.C. ........................................................... 17&40
N.O. ........................................................... 18&41
If not used 18-41 must be closed.
External Fault 2 ................................ 19&42
Open - Run Enable
Closed - Fault
If not used, disable Alarm and Trip for External Fault 2 in the MPS3000 setting, (see tripping and alarm
setting table section 9.9.4 page 48).
External Fault 3 .............................. 20&43
Open - Run Enable
Closed - Fault
If not used, disable Alarm and Trip for External Fault 3 in the MPS3000 setting. (see tripping and alarm
setting table section 9.9.4 page 48).

__________________________________________________________________________________

13 • MPS 3000 Terminals
5.10. Output Relays
The MPS3000 incorporates four output relays. Each has a C/O contact, rated 8 A / 250 VAC resistive,
2000 VA inductive.
The four relays can be configured for alarm, alarm fail-safe, trip, trip fail-safe, overload, earth (Ground)
Fault, KWH pulses and also for external contactors control required for the MPS3000-C.
Note: When a relay is configured as an alarm Fail-Safe or trip Fail-Safe, the relay is immediately
energized when the auxiliary power supply is connected to terminals 61 & 62. The following N.O and N.C.
terminals are given for Non-Energized relays.
Output Relay A:
N.C .......................................................... 44&45
N.O .......................................................... 44&46
Relay A can be configured as an Alarm, Alarm Fail-Safe, Tripping / Alarm (where it can be set for any
group of faults), # Of Starts Pre Alarm (can be used to prevent start which will cause Too Many Starts
fault) , U/V start prevent or KWH pulse relay. See later for additional control functions used with the
MPS3000-C.
Output Relay B:
N.C .......................................................... 47&48
N.O .......................................................... 47&49
Relay B can be configured as Trip, Trip Fail-Safe, Tripping / Alarm (where it can be set for any group of
faults) or # Of Starts Pre Alarm, u/v Start Prevent or (I > 0) After Trip relay. See later for additional
control functions used with the MPS3000-C. When configured as (I > 0) After Trip, it can be used to trip
upstream breaker if current still flows after the MPS3000 has issued a Trip signal.
Output Relay C:
N.C .......................................................... 50&51
N.O ...........................................................50&52
Relay C can be configured as Alarm Fail-Safe, Alarm, Contactor A/B status, Start/Run and Running
indication.
See later for additional control functions used with the MPS3000-C.
Output Relay D:
N.C .......................................................... 53&54
N.O ...........................................................53&55
Relay D can be configured as a Trip, Trip Fail Safe or Ready relay.
The relays can be configured to receive two isolated alarm signals and two isolated trip signals.
Note: When a relay is configured for Fail Safe operation, relay is energized when MPS3000 is powered
and de-energized upon fault. Relay C is designed mainly to be used as an alarm fail-safe, to alarm
constantly when the unit is not powered.
MPS3000-C special use:
The relays can be configured with contactors control functions which may be required, according to the
control application.
Output A Relay:
Can be configured as one of:
* DOL starting
* Star period of Star-Delta starting
* Forward of a forward-reverse motor
* High speed of two-speed motor
Output B Relay:
Can be configured (by parameter setting) as one of the following functions:
* Delta period of Star/Delta starting
* Reverse of a forward-reverse motor
* Low speed of two-speed motor
__________________________________________________________________________________

14 • MPS 3000 Terminals
Output C Relay:
Can be configured (by parameter setting) as one of the following functions:
* Contactor A status.
* Contactor B status.
* Start/Run - controls line contactor in Star-Delta starters.
5.11. Serial Link
Standard RS485 Half Duplex, with MODBUS protocol.
Twisted shielded pair should be used for wiring. Shield should be connected to Chassis Ground
externally, near the MPS3000.
Acceptable baud rates: 1200, 2400, 4800, 9600, 19200 and 38400 BPS.
Serial Port (+) .........................................23
Serial Port (-) ......................................... 22
Serial Port (shield) ................................. 63
Notes:
1. Auxiliary Power Supply must power-cycled after changing communication's settings (e.g.
baud-rate).
2. Connect 120 Ohm resistors between (+) and (-) at the end and at the beginning of the
line.

__________________________________________________________________________________

15 • C/Ts Wiring Diagrams
6. C/Ts Wiring Diagrams
6.1.
Three C/Ts + Ground Fault Core Balance C/T
It is the preferred connection. It drawback is that a relatively large Core Balance transformer is required.
In the following drawings, the 5A inputs are used and the 1A are left open.
In this diagram terminal 92 which is the Ground Fault input current gets the sum of the three phase
currents. If there is no ground fault leakage current in the motor or cables, this current equals 0.

6.2.
Three C/T's in a Residual Ground Fault Connection
When Core Balance C/T is not used and ground fault protection is required, use the residual Ground Fault
Connection.
In this diagram terminal 92 which is the Ground Fault input current, receives the sum of the C/T outputs of
the phase currents.
Ideally, if there is no ground fault leakage current, this current equals 0. Since C/Ts may saturate slightly
during starting, their sum may not be 0 even when there is no leakage current to ground in the motor (or
cables).
Note: In System Parameter page, the G/F DURING START setting parameter, is designed to significantly
increase the G/F level, during starting (same level for alarm and for trip) to prevent nuisance alarming and /
or tripping.
For Residual Connection, It is recommended to leave the value in its default value which is 100% of FLC.

__________________________________________________________________________________

16 • Front Panel Overview and Settings
7. Front Panel Overview and Settings

LEDs
ON
Stopped
Starting
Running
Output A
Output B
Alarm
Trip
Internal
Fault

ON when auxiliary power supply voltage is connected.
ON in stop condition.
ON as a response to start command. Indicates that command is still "ON" and motor's
average current is above 115% of rated current.
ON after completion of starting process. Indicates that motor's average current
decreased below 115% of rated current.
ON when Output A relay is energized.
ON when Output B relay is energized.
ON indicates Alarm condition. Remains ON even if the alarm condition disappears,
turns off only after resetting.
ON indicates Trip condition. Stays ON even if the trip condition disappears, turns off
only after resetting.
ON indicates internal fault detection. Stays lit even if internal fault disappears turns off
after resetting.

LCD Display
Two lines of 16
characters each
Keys Overview
Set Page
Data Page
Select FWD
Select REV
▲
▼
Reset
Store

Used for display of all data and system messages.

Press to change set parameter pages in positive cyclical order.
Press to change the data page in positive cyclic order.
Press to forward parameters listed in this page. If key is pressed for more than 0.5
sec, parameters will be displayed at a fast rate.
Press to reverse parameters listed in this page. If key is pressed for more than 0.5
sec, previous parameters will be displayed at a fast rate.
Press once to increase parameter value. Press and hold to increase parameter
value at a fast rate.
Press once to decrease parameter value. Press and hold to decrease parameter
value at a fast rate.
Press to Reset displayed Alarm or Trip
Press to store displayed parameter value in the non-volatile memory.
Note: If “Authorized Key” is locked out (open), only parameters viewing is possible.
When the Key is closed, it is possible to view, change and store any set
parameter.

__________________________________________________________________________________

17 • Front Panel Overview and Settings
7.1.

Front Panel Settings

7.1.1.

Startup

On startup the following occurs:

ON and Stopped LED's are turned on
The LCD will display:

SYSTEM PARAMETER
*** SETTINGS ***

In order to review above page settings, press Select FWD. key.
Messages are displayed on the LCD in two lines.
* Upper line describes the parameter's name.
* Lower line shows its value.
When Authorized key terminals are open, it is possible to view parameters but not to change or store
them.
An attempt to change a value by ▲, ▼ or to store will result in UNAUTHORIZED ACCESS message.
To change settings, when Authorized key is closed, press▲ or ▼ keys and save the new value by
pressing Store key. Once data was properly stored in the non-volatile memory the LCD displays the 2
Sec. flash message:
DATA SAVED OK

Notes:
1. A new parameter setting becomes effective only after storing it in the non-volatile
memory. Setting a parameter, without storing, and moving to another parameter, will
return the parameter to its previously stored value.
2. Any "set page" parameters can be viewed, altered and stored at any time. However, it is
not recommended to change and store important parameters while the motor is starting
or running.
3. Any stored parameter is kept indefinitely in the non-volatile memory.

7.1.2.

Reset to Factory Default Values

Press Set Page key and ▼key simultaneously, the LCD will display:
TEST/MAINTENANCE
*** OPTIONS ***

Press Select FWD. key three times, the LCD will display:
STORE NOW ?
DEFAULT SETTINGS

Press Store and Set Page keys simultaneously, the LCD will display:
DATA SAVED OK

Note: Storing Default parameters erases all previously updated parameters
7.2.
Messages

7.2.1.

Blinking Messages

Blinking messages are displayed as a response to an event. For example:
DATA SAVED OK

The message is displayed for a short while (2 seconds) only. Display then returns
to the previous message.
Blinking messages are usually displayed as a response to an operator action.
It is used either to confirm activation of the requested operation, or to indicate reason for not doing so.
The blinking messages are:
Display

Description

DATA SAVED OK

Displayed after pressing Store key. If an error is found
during store process, then next message is shown.

STORAGE ERROR

Displayed when an error is found in the store process.

WRONG PARAMETERS

Displayed after power-up, if the non-volatile parameter
check sum is found to be wrong.

UNAUTHORIZED ACCESS

When Authorized Key is open (locked), and a parameter
change is attempted. Also displayed after Unauthorized
__________________________________________________________________________________

18 • Front Panel Overview and Settings
Display

Description
Store and Reset action.
•

UNABLE TO START
LOCAL / REMOTE

•
•
•
•
•
•
•
•
•
•

Displayed if local Start is pressed but starting
was not initiated because Local / Remote input
is on Remote position.
Similar UNABLE TO START with another
second line massage may appear specifying the
real cause of the UNABLE TO START.
Possible cause:
LOCAL/REMOTE input = REMOTE. (PLC)
Local stop input is open (= stop).
U/V START PREVENT, prevents starting due to
low voltage.
A trip is active.
External interlock = open (locked out)
Isolator status is "Isolate".
PROTECTION ONLY is set to YES.
Other reasons will cause CHECK SYSTEMS
massage to appear in the second line.

SELF TEST PASSED

Displayed as a response to running the built in test
procedure, provided that all tests were "O.K.".

SELF TEST FAILED
ERROR CODE = 32

Displayed as a response to finding an error during the
operation of Test procedure.
In case of test failure, reset and test again. If problem
persists then Error Code should be reported to
Authorized Factory representative.

7.2.2.

Solid Messages

Constant messages are displayed upon a fault. Example:
TRIP:
MAX START TIME

Notes:
1. Pressing Store key while the LCD displays on "Data Page" or a "Set Page" parameter, will store this
parameter as the default display. If no key is pressed for more than five minutes, then this parameter
becomes the default display parameter. Same is correct for a Set Page header (first message of the
page) display.
Constant messages are displayed, as a response to an event and not as a result of an operator action.
Display

Description

ALARM:
U/C LEVEL 1

Displayed when the Alarm LED illuminates. The lower line displays the
fault name.

TRIP:
U/C LEVEL 2

Displayed when the Trip LED illuminates. The lower line displays the
fault name.

__________________________________________________________________________________

19 • Front Panel Overview and Settings
7.3.

Menu Navigation Top

7.3.1.

SYSTEM PARAMETER SETTINGS

For parameter setting there are five menu options available.
By pressing Set Page key the LCD presents the following menus:
SYSTEM PARAMETER
*** SETTINGS ***

OVERLOAD
*** SETTINGS ***

ANALOG I/O
*** SETTINGS ***

VOLTAGE
*** SETTINGS ***

POWER
*** SETTINGS ***

TRIPPING / ALARM
*** OPTIONS ***

CURRENT
*** SETTINGS ***

TEMPERATURE
*** SETTINGS ***

COMMUNICATION
*** SETTINGS ***

7.3.2.

MEASURED DATA

By pressing Data Page key the LCD displays the following headers:
MEASURED DATA
- **** -

LOGICAL INPUTS *CONTACT STATUS*

CALCULATED DATA
- **** -

STATISTICAL DATA
- **** -

7.3.3.

FAULT DATA
- **** -

TEST / MAINTENANCE

By pressing Set Page key and ▼key simultaneously, the LCD will display:
TEST/MAINTENANCE
*** OPTIONS ***

__________________________________________________________________________________

20 • Set Pages and Default Parameters
8. Set Pages and Default Parameters
Below the menu navigation structure and MPS3000 default parameter settings.
SYSTEM PARAMETER
*** SETTINGS ***

VOLTAGE
*** SETTINGS ***

CURRENT
*** SETTINGS***

OVERLOAD
*** SETTINGS ***

LINE VOLTS (Vn)
480V

STAR TO DELTA AT

U/V LEVEL
80% OF Vn

MAX START TIME
10 SEC.

CURVE MULTIPLIER
6

LINE FREQUENCY
60Hz

CONFIG. OUTPUT A
TRIPPING / ALARM

U/V DELAY
5.0 SEC.

NUMBER OF STARTS
10

OVERLOAD PICKUP
105 % OF FLC

VT PRIMARY
VT NOT CONNECTED

OUTPUT DELAY
0 SEC.

UV ACTIVE AT STOP
DISABLE

STARTS PERIOD
30 MIN.

HOT/COLD RATIO
50 %

VT SECONDARY
VT NOT CONNECTED

CONFIG. OUTPUT B
TRIPPING / ALARM

U/V STRT PREVENT
OFF

START INHIBIT
15 MIN.

RUN COOL T CONST
10 MIN.

MOTOR FLC
100 AMP.

OUTPUT DELAY
0 SEC.

U/V AUTO RESTART
BOTH SUP. & Vin

U/C LEVEL 1
50 % OF FLC

STP COOL T CONST
30 MIN.

CT PRIMARY
100 AMP.

CONFIG. OUTPUT C
ALARM - FAIL SAFE

U/V RESTRT DELAY
4.0 SEC.

U/C LEVEL 1 DELAY
2 SEC.

UNBALANCE K FCTR
5

GND CT PRIMARY
100 AMP.

OUTPUT DELAY
0 SEC.

O/V LEVEL 1
115 % OF Vn

U/C LEVEL 2
40 % OF FLC

RTD BIAS
OFF

GND FAULT LEVEL 1
5% OF FLC

CONFIG. OUTPUT D
TRIP

O/V LEVEL 2
120 % OF Vn

U/C LEVEL 2 DELAY
5 SEC.

RTD BIAS MINIMUM
40 °C

G/F LEVEL 1 DELAY
10 SEC.

OUTPUT DELAY
0 SEC.

O/V LEVEL 2 DELAY
1 SEC.

LOAD INCREASE
120 % OF FLC

RTD BIAS MIDDLE
130 °C

GND FAULT LEVEL 2
10% OF FLC

CONFIG. INPUT A
AUTHORIZED KEY

O/C LEVEL 1 – JAM
400 % OF FLC

RTD BIAS MAXIMUM
155 °C

G/F LEVEL 2 DELAY
0.5 SEC.

CONFIG. INPUT B
EXT. FAULT 1

O/C LEVEL 1 DELAY
2.0 SEC.

THERMAL LEVEL 1
80 % OF CAPACITY

G/F DURING START
100% OF FLC

CONFIG. INPUT C
EXT. FAULT 2

O/C LEVEL 2 – SHORT
800 % OF FLC

STALL TIME FCTR
50%

CURRENT INHIBIT
OFF

CONFIG. INPUT D
REMOTE RESET

O/C LEVEL 2 DELAY
0.5 SEC.

STARTING METHOD
DIRECT ON LINE

PROTECTION ONLY
YES

UNBALANCE LEVEL 2
15 % OF FLC

MAX TIME IN STAR

PARAM. SETTINGS
LOCKED

UNBALANCE MIN T
5 SEC.

TRANSITION TIME

U/B LEVEL 2 MAX T
30 SEC.

Continue……

__________________________________________________________________________________

21 • Set Pages and Default Parameters

POWER
*** SETTINGS ***

TEMPERATURE
*** SETTINGS ***

ANALOG I/O
*** SETTINGS ***

TRIPPING / ALARM
*** OPTIONS ***

COMMUNICATION
*** SETTINGS ***

RATED PF AT FLC
0.88 LAG

RTD TYPE
PLATINUM 100 OHM

ANALOG OUT TYPE
4..20mA

MAX START TIME
TRIP: DISABLE

BAUD RATE
19200

UNDER PWR LEVEL 1
45%

SENSOR 7-10 TYPE
RTD

ANLOG OUT 1 PAR.
AVERAGE CURRENT

MAX START TIME
ALARM: ENABLE

ADDRESS NUMBER
OFF

U/P LEVEL 1 DELAY
30 SEC.

T1 LEVEL 1
120 °C

ANLOG OUT 1 MIN.
0 % OF FLC

MAX START TIME
AUTO RST: DSABL

S.LINK PAR. SAVE
DISABLE

UNDER PWR LEVEL 2
25%

T1 LEVEL 2
140 °C

ANLOG OUT 1 MAX.
200% OF FLC

MAX START TIME
PANEL RST: ENABL

FRONT COM ADDRES
OFF

U/P LEVEL 2 DELAY
30 SEC.

Same settings for
RTD 2..6

ANLOG OUT 2 PAR.
AVG. LINE VOLTS

MAX START TIME
REMOT RST: ENABL

LOW POWER FACTOR
0.8 LAG

T7 LEVEL 1
80 °C

ANLOG OUT 2 MIN.
0 % OF Vn

MAX START TIME
OUTPUT A: DISABL

LOW PF DELAY
30 SEC.

T7 LEVEL 2
100 °C

ANLOG OUT 2 MAX.
200% OF Vn

MAX START TIME
OUTPUT B: DISABL

KWH PER PULSE
OFF

Same settings for
RTD 8 & 9

ANLOG OUT 3 PAR.
THERMAL CAPACITY

T10 LEVEL 1
80 °C

ANLOG OUT 3 MIN.
0 % OF CAPACITY

T10 LEVEL 2
100 °C

ANLOG OUT 3 MAX.
200% OF CAPACITY

ANALOG INPUT # 4
TRIP: DISABLE

ANLOG OUT 4 PAR.
MAX OF T1..T3

ANALOG INPUT # 4
ALARM: DISABLE

ANLOG OUT 4 MIN.
0 °C

ANALOG INPUT # 4
AUTO RST: DSABL

ANLOG OUT 4 MAX.
200 °C

ANALOG INPUT # 4
PANEL RST: ENABL

ANALOG IN 1 TYPE
4..20 mA

ANALOG INPUT # 4
REMOT RST: ENABL

ANLOG IN 1 LEVEL
ABOVE 50 %

ANALOG INPUT # 4
OUTPUT A: DISABL

ANLOG IN 1 DELAY
10 SEC.

ANALOG INPUT # 4
OUTPUT B: DISABL

Note: If Sensor 7-10 are
thermistors, then units
of 7-10 are KΩ

Similar settings for next
50 Fault protections
Refer to table on
Section 9.9.4 page 48.

.
.
.
.
.

Same settings for
Analog in 2,3 & 4

__________________________________________________________________________________

22 • Set Pages and Default Parameters

MEASURED DATA
- **** -

CALCULATED DATA
- **** -

LOGICAL INPUTS –
CONTACT STATUS

STATISTICAL DATA
- **** -

FAULT DATA
- **** -

Vp1
230

Vp2
230

Vp3
230 V

MOTOR LOAD CURR.
96 % OF FLC

DISCRETE INPUT A
CONTACT OPEN

TOTAL RUN TIME
9857 HOURS

LAST TRIP
EXTERNAL FAULT 1

VL12
400

VL23
400

VL31
400 V

EQUIVALENT CURR.
97 % OF FLC

DISCRETE INPUT B
CONTACT OPEN

TOTAL # OF START
410

LAST ALARM
MAX START TIME

I1
100

I2
101

I3
100 A

UNBALANCE CURR.
5 %

DISCRETE INPUT C
CONTACT OPEN

TOTAL # OF TRIPS
7

TRIP I1, I2, I3
431 435 432

GROUND CURRENT
0 AMP.

THERMAL CAPACITY
48 % OF CAPACITY

DISCRETE INPUT D
CONTACT OPEN

LAST STRT PERIOD
9.8 SEC.

TRIP GND CURRENT
0 AMP.

FREQUENCY
50.0 Hz

TIME TO TRIP- O/L
NO TRIP EXPECTED

LAST START MAX I
760 AMP.

TRIP Vp1, Vp2, Vp3
230 230
230 V

POWER
563.2 KW

TIME TO START
0 SEC.

MOTOR STATUS
NOT AVAILABLE

TOTAL ENERGY
457,235 KWH

LAST 10 TRIPS:

REACTIVE POWER
601.3 KVAR

DISCRETE INPUT A
CONTACT OPEN

TOTAL REACT. EN.
265,107 KVARH

EXTERNAL FAULT 1
08:32
08/05/02

POWER FACTOR
0.88

DISCRETE INPUT B
CONTACT OPEN

MINIMUM VOLTAGE
395 VOLT

T1 LEVEL 2
13:33
06/13/02

Above fields are visible
only if PROTECTION
ONLY is set to Yes. If it
is set to No, then status
of motor, as well as
status of all 20 inputs of
MPS3000-C can be
displayed.

A

T1
105

T2
104

T3
105

°C

DISCRETE INPUT C
CONTACT OPEN

MAXIMUM VOLTAGE
404 VOLT

O / C LEVEL 2 –SHORT
11:26
03/21/02

T4
105

T5
104

T6
105

°C

DISCRETE INPUT D
CONTACT OPEN

MINIMUM CURRENT
73 AMP.

Similar messages of
previous 7 trips.

T7
80

T8
85

T9
???

°C

EXTRNL INTERLOCK
OPEN=LOCKED OUT

MAXIMUM CURRENT
86 AMP.

°C

ISOLATOR N.O.
OPEN=ISOLATED

MIN. FREQUENCY
49.9 Hz

ANALOG INPUT # 1
20 %

ISOLATOR N.C.
OPEN=RUN ENABLE

MAX. FREQUENCY
50.1Hz

ANALOG INPUT # 2
20 %

START A INPUT
CONTACT OPEN

ANALOG INPUT # 3
20 %

START B INPUT
CONTACT OPEN

PLC RESET
CONTACT OPEN

ANALOG INPUT # 4
20 %

STOP INPUT
OPEN=STOP

SPEED SWITCH
OPEN=HIGH SPEED

LOCAL/REMOTE
OPEN=LOCAL

AUTHORIZED KEY
OPEN=LOCKED

PLC CONTROL
OPEN=PLC

EXTERNAL FAULT 1
OPEN=ENABLE

PLC CONTROL A
OPEN=STOP

EXTERNAL FAULT 2
OPEN=ENABLE

PLC CONTROL B
OPEN=STOP

EXTERNAL FAULT 3
OPEN=ENABLE

T10
???

Note: If Sensor 7-10 are
thermistors, then units of
T7-T10 are KΩ

Legend:
PLC CONTROL B
OPEN=STOP

Only displays in MPS 3000-C model
and when PROTECTION ONLY is set
to NO

__________________________________________________________________________________

23 • PARAMETERS SETTINGS PAGES
9. PARAMETERS SETTINGS PAGES
These menus are accessed by pushing the SET PAGE button.
9.1.
SYSTEM PARAMETER SETTINGS
SYSTEM PARAMETER
*** SETTINGS ***

Display

Description

LINE VOLTS (VN)
400 VOLT

Rated Line to Line Mains Voltage.
Range: 100V-22000V. Increments of : 1V

LINE FREQUENCY
50 HZ

Rated Mains Frequency.
Range: 50, 60 Hz

VT PRIMARY
VT NOT CONNECTED

Primary voltage of mains Voltage Transformers. Transformer should be used for
line voltages above 690V.
Range: not connected, 100V-22000V. Increments of : 1V
Note: When only one single phase VT is used, decrease VT PRIMARY voltage
setting by 1.73 factor. Example: If mains voltage, line to line is 3300V and only one
VT is used, set VT PRIMARY 3300/1.73 = 1900V. This is since Line voltage is
converted to Phase voltage.

VT SECONDARY
VT NOT CONNECTED

Secondary voltage of mains Voltage Transformer.
Range: VT NOT CONNECTED, 95V - 660V. Increments of : 1V

MOTOR FLC
100 AMP.

Motor Full Load (rated) Current.
Range: 1 - 2000A. Increments of : 1A

C/T PRIMARY
100 AMP.

Primary rated current of Current Transformer. (No need to set Secondary rated
current).
Range: 1 - 2000A. Increments of : 1A

GND C/T PRIMARY
100 AMP.

Primary rated current of Ground Fault Transformer. (No need to set Secondary
rated current).
Range: 1 - 2000A. Increments of : 1A

GND FAULT LVL 1
5% OF FLC

Ground Fault current initiating a Level 1 Alarm / Trip (in % of Motor FLC), after G/F
LEVEL 1 DELAY. This setting has no effect during starting. See G/F DURING
START parameter here after.
Range: 1 – 100% of FLC. Increments of : 1%

G/F LEVEL 1 DELAY
10 SEC.

Ground Fault Level 1 Alarm / Trip Delay.
Range: 1 - 60 Sec. Increments of : 1 Sec.

GND FAULT LVL 2
10% OF FLC

Ground Fault current initiating Level 2 Alarm / Trip (in % of Motor FLC),after G/F
LEVEL 2 DELAY. This setting has no effect during starting. See G/F DURING
START parameter here after.
Range: 1-100% of Motor FLC. Increments of : 1 %.

G/F LEVEL 2 DELAY
0.5 SEC.

Ground Fault Level 2 Alarm / Trip Delay.
Range: 0 - 2 Sec. Increments of : 0.1 Sec.

G/F DURING START
100% OF FLC

Ground Fault Level 1 & 2 Alarm / Trip During start period. Intended to be used with
Residual C/Ts connection, to prevent nuisance tripping with high currents of start
process.
Range: 1 – 100% of FLC. Increments of: 1 %.

__________________________________________________________________________________

24 • PARAMETERS SETTINGS PAGES
SYSTEM PARAMETER
*** SETTINGS ***

Display

Description

CURRENT INHIBIT
OFF

Prevents trip signal to line contactor and inhibits opening of contactors A & B if
used, when short circuit current exceeds the set value, to prevent contactor's
damage. Thermal trip overrides current inhibit.
Set to OFF when contactors are not used to trip the motor (for circuit breaker
application).
WARNING: The MPS will not protect the motor for high current above the current
inhibit setting. It is the customers responsibility to ensure that the motor is protected
for fault current, above CURRENT INHIBIT by external protection
Range: OFF, 400-1000% of Motor FLC. Increments of: 10%.

STARTING METHOD
DIRECT ON LINE

Type of starting method.
Range: DIRECT ON LINE, STAR (WYE)/DELTA, REVERSING, TWO-SPEED, NO
START PROCESS and TWO PHASE STARTR. Use NO START PROCESS
setting, to allow entering to run even if current at “starting” is low (for example for
transformer protection).
When selecting and storing STAR-DELTA method, the following three parameters values can be altered.
MAX. TIME IN STAR
Time period during which star contactor is closed. This time will shorten if current
10 SEC.
decreases below STAR TO DELTA AT value, but not below 0.25 MAX TIME IN
STAR.
Range: 1- 60 Sec. Increments of : 0.1 Sec.
TRANSITION TIME
Time period when both contactors A and B are open.
200 mSEC.
range: 0.05 - 2 Sec. Increments: 0.05 Sec.
STAR TO DELTA AT
Current value (in % of FLC) in which STAR TO DELTA switching occurs. Provided
150% OF FLC
Star time is above 25% of MAX TIME IN STAR setting.
Range: 70 - 200% of FLC. Increments of : 1%
When selecting and storing DIRECT ON LINE, REVERSING or TWO PHASE STARTR, none of the above
parameters can be altered.
When selecting and storing TWO SPEED method, the following two parameters can be altered.
LOW SPEED FLC.
10 AMP.
LO SPD CURVE MUL
15
STAR TO DELTA AT

Low speed motor FLC.
Range: 1 - 2000 Amp.
Increments of : 1A
Overload Trip Curve Multiplier. Note: Set to 1..15 !!
Range: 1 - 15. Increments of : 1.
Can not be altered.

CONFIG. OUTPUT A
TRIPPING/ALARM

Enables Configuration of Output A relay as:
CONTACTOR A: Relay is used for controlling the contactor
• ALARM
• ALARM - FAIL SAFE
• TRIPPING / ALARM: Relay operates by group of faults as set in
Tripping/Alarm page. Refer to section 9.9.4 page 48.
• # STRTS PRE ALARM
• U/V STRT PREVENT
• KWH. PULSE RELAY
• COMM. FORCING: Relay is controlled via communication

OUTPUT DELAY
0 SEC.

Time delay for Output A.
Range: 0 - 250 Sec. Increments of : 1 Sec.

__________________________________________________________________________________

25 • PARAMETERS SETTINGS PAGES
SYSTEM PARAMETER
*** SETTINGS ***

Display
CONFIG. OUTPUT B
TRIPPING/ALARM

Description
Enables Configuration of Output B relay as:
• CONTACTOR B: Relay is used for controlling the contactor
• TRIP
• TRIP - FAIL SAFE
• TRIPPING / ALARM: Relay operates by group of faults as set in
Tripping/Alarm page. Refer to section 9.9.4 page 48.
• # STARTS PRE ALARM
• U/V STRT PREVENT
• (I > 0) AFTER TRIP: Can be used to trip an upstream breaker if
contactor is welded
• COMM. FORCING: Relay is controlled via communication

OUTPUT DELAY
0 SEC.

Time delay for Output B.
Range: 0 - 250 Sec. Increments of : 1 Sec.

CONFIG. OUTPUT C
ALARM- FAIL SAFE

Enables Configuration of Output C relay as:
• ALARM - FAIL SAFE
• ALARM
• CONTACTOR A N.O.: Relay follows actual contactor A Status. To use,
connect contactor A N.O. to Input B and set CONFIG. INPUT B as
CONTACTOR A N.O.
• CONTACTOR B N.O.: Relay follows actual contactor B Status. To use,
connect contactor B N.O. to Input D and set CONFIG. INPUT D as
CONTACTOR B N.O.
• START / RUN: Relay shows that motor is in starting or running mode.
Can be used for activating Start/Run (main) contactor of a Star-delta
starter.
• RUNNING: Running indication. Relay is activated after motor is
started and current is reduced below 110% of OVERLOAD PICKUP
level.
• COMM. FORCING: Relay is controlled via communication

OUTPUT DELAY
0 SEC.
CONFIG. OUTPUT D
TRIP

OUTPUT DELAY
0 SEC.

Time delay for Output C.
Range: 0 - 250 Sec. Increments of : 1 Sec.
Enables Configuration of Output D relay as:
• TRIP
• TRIP - FAIL SAFE
• READY: Indicates that the MPS3000 is not in protection only mode,
There is no active trip, isolator switch is closed, interlock is not
locked out, stop input is closed and voltage level is above the preset
U/V Start Prevent. Note: Voltage level is checked only if motor is not
already running.
• COMM. FORCING: : Relay is controlled via communication
Time delay for Output D.
Range: 0 - 250 Sec. Increments of : 1 Sec.

__________________________________________________________________________________

26 • PARAMETERS SETTINGS PAGES
SYSTEM PARAMETER
*** SETTINGS ***

Display
CONFIG. INPUT A
AUTHORIZED KEY

CONFIG. INPUT B
EXTERNAL FAULT 1

CONFIG. INPUT C
EXTERNAL FAULT 2

CONFIG. INPUT D
REMOTE RESET

PROTECTION ONLY
YES

PARAM.SETTINGS
LOCKED

Description
Enables Configuration of Discrete Input A as:
• CONTACTOR A N.C. (for MPS3000-C, for sensing contactor A status).
• AUTHORIZED KEY
• LOW SPD OF 2 SPD motor (for different FLC and Thermal Overload
Curve).
• EMERGENCY RESTRT (Reset Thermal capacity at stop, Ignore No. Of
Starts).
• EXTERNAL FAULT 1 (N.O., close to trip)
• EXTERNAL FAULT 2. (N.O., close to trip)
• EXTERNAL FAULT 3. (N.O., close to trip)
• REMOTE RESET.
• SPEED SWITCH (No Turn sensing, to engage Thermal Overload Stall
Time Factor).
• COMM. READING – Input A status is read/monitored via
communication.
Enables Configuration of Discrete Input B as:
• CONTACTOR A N.O. (for MPS3000-C, for sensing contactor A status).
• All Other settings as in CONFIG. INPUT A
Enables Configuration of Discrete Input C as:
• Contactor B N.C. (for MPS3000-C, for sensing contactor B status).
• All Other settings as in CONFIG. INPUT A
Enables Configuration of Discrete Input D as:
• Contactor B N.O. (for MPS3000-C, for sensing contactor B status).
• All Other settings as in CONFIG. INPUT A
Determines MPS operation mode:
Protection & Control (no); Protection Only (yes)
Range: YES, NO
Can be used instead of external “Authorized Key” inputs. When set as LOCKED
external key options function normally. When set as NOT LOCKED, external key inputs
are ignored and MPS is in Authorized condition (same as if external key is connected).
Range: LOCKED, NOT LOCKED

__________________________________________________________________________________

27 • PARAMETERS SETTINGS PAGES
9.2.

VOLTAGE SETTINGS
VOLTAGE
*** SETTINGS ***

Display
U/V LEVEL
80% OF Vn

Description
Under Voltage level, (in % of nominal voltage). Fault occurs when voltage is
below set value for more than U/V DELAY. Range: 50 - 95 % of Vn. Increments
of : 1 %

U/V DELAY
5.0 SEC.

Under Voltage time delay.

UV ACTIV AT STOP
DISABLE

Determines if Under Voltage protection is active at stop. If disabled, u/v is active
only if not at stop.

Range: 0.2 - 10 Sec. Increments of : 0.1 Sec.

Range: DISABLE, ENABLE
U/V STRT PREVENT
OFF
U/V AUTO RESTART
DISABLE

U/V RESTART DELAY
4 SEC.
O/V LEVEL 1
115% OF Vn
O/V LEVEL 2
120% OF Vn
O/V LVL 2 DELAY
1 SEC.

Prevents starting if mains voltage is lower than set by U/V START PREVENT. For
MPS3000-C only.
Range: OFF, 51-95 % of Vn. Increments of : 1%
ENABLES / DISABLES the auto Restart features.
• Set to DISABLE, if Restart is not required.
• Set to MEASURED VOLTAGE, if control power supply (61-62) is stable during
mains failure (powered from UPS or DC). Mains Failure is detected and
causes motor stop, when voltage decreases below 65% of rated voltage.
Mains restoration is detected when voltage increases to above 85% of rated
voltage.
• Set to BOTH SUP & VIN for normal AC mains (both measured voltage (35,37)
and control power supply (61,62) turn off during mains failure).
Note: Setting as AUXILIARY SUPPLY may not cause restart, for mains failure
duration of less than 0.5sec.
Restart occurs only if:
• Motor was Starting/Running before mains failure
• Turn off time is 0.1 - 4 sec. (±25%)
Range: DISABLE, AUXILIARY SUPPLY, MEASURED VOLTAGE, BOTH SUP. &
VIN
Time delay for the auto Restart feature, counted from mains (auxiliary supply or
measured voltage, as set on u/v Start Prevent) restoration
Range: 0.4 – 25 Sec.
Over Voltage Level 1. Fault occurs when voltage is above set value for more than
1 second (fixed delay). Range: 100 - 120 % of Un. Increments of : 1%
Over Voltage Level 2. Fault occurs when voltage is above set value for more than
O/V LEVEL 2 Delay. Range: 100 - 120 % of Un. Increments of : 1%
Over Voltage Level 2 delays.
Range: 1 - 100 Sec. Increments of : 1Sec.

__________________________________________________________________________________

28 • PARAMETERS SETTINGS PAGES
9.3.

CURRENT SETTINGS
CURRENT
*** SETTINGS ***

Display

Description

MAX START TIME
10 SEC.

Maximum Permitted starting time until current is reduced to 110% of Overload
Pickup setting parameter. Protects the motor against too long starting.
Range: 1 – 250 Sec. Increments of : 1 Sec.

NUMBER OF STARTS
10

Maximum Permitted number of starts during STARTS PERIOD.
Range: 1 – 10. Increments of : 1

STARTS PERIOD
30 MIN.

Time period during which the NUMBER OF STARTS is counted.
Range: 1 - 60 min. Increments of : 1 min.

START INHIBIT
15 MIN.

Time period after which auto reset is prevented (even if enabled) after TOO
MANY STARTS trip.
Range: 1 - 60 min. Increments of: 1 min.

U/C LEVEL 1
50% OF FLC

Under Current Level 1. Fault occurs when current is below the set parameter for
more than U/C LEVEL 1 DELAY.
Range: 10 - 90 % of Motor FLC. Increments of : 1%

U/C LVL 1 DELAY
2 SEC.

Under Current Level 1 Delay.
Range: 1 - 60 Sec. Increments of : 1 Sec.

U/C LEVEL 2
40% OF FLC

Under Current Level 2.
Range: 10 - 90 % of Motor FLC. Increments of : 1%

U/C LVL 2 DELAY
5 SEC.

Under Current Level 2 Delay.
Range: 1 - 60 Sec. Increments of : 1 Sec.

LOAD INCREASE
120% OF FLC

Fault occurs when current is above the set parameter for more than fixed time
period of 5 seconds. Range: 60 - 150% of Motor FLC. Increments of : 1%

O/C LEVEL 1- JAM
400 % OF FLC

Over Current Level 1- Jam (stall) protection. Operative after start process ended.
Indicates that current exceeded set value for more than O/C LEVEL 1 DELAY.
Range: 100 - 500 % of Motor FLC. Increments of : 10%

O/C LVL 1 DELAY
2.0 SEC.

Time delay for O/C Level 1.
Range: 0.5 - 10 Sec. Increments of : 0.1 Sec.

O/C LVL 2- SHORT
800 % OF FLC

Over Current Level 2- Short circuit protection. Operative during starting and
running. Indicates that current exceeded set value for more than O/C LEVEL 2
DELAY.
Range: 400 - 1200 % of Motor FLC. Increments of : 10%

O/C LVL 2 DELAY
0.5 SEC.

Time delay for Over Current Level 2
Note: When set to 0, actual delay is less than 70mSec.
Range: 0 - 4 Sec. Increments of : 0.1 Sec.

__________________________________________________________________________________

29 • PARAMETERS SETTINGS PAGES
CURRENT
*** SETTINGS ***

Display

Description
Unbalance Current. Fault occurs only if actual Unbalance is greater than the set
value.
Note - Unbalance Current level 1 will be activated when Unbalance Current
exceeds 50% of the UNBALANCE LEVEL 2 for more than 1 second (fixed time
period).
Range: 10 - 40 % of Motor FLC. Increments of : 1%
UNBALANCE MIN T
Unbalance Minimum response time for both Alarm and Trip.
5 SEC.
Range: 1 - 30 Sec. Increments of : 1 Sec.
U/B LVL 2 MAX T
Unbalance curve selection.
30 SEC.
Time delay at 10% of Unbalance. Fault time is inversely related to the actual
unbalance (See Figure 3 – Unbalance Protection Time Delay, page 44).
Range: 20 - 120 Sec. Increments of : 1 Sec.
9.4.
OVERLOAD SETTINGS
UNBALANCE LVL 2
15 % OF FLC

OVERLOAD
*** SETTINGS ***

Display
CURVE MULTIPLIER
6

Description
Overload Curve Multiplier. Shifts the entire Overload Curve.
Range: 1 - 15. Increments of : 1.

OVERLOAD PICKUP
105% OF FLC

Lower threshold for O/L protection. Below this threshold, O/L fault cannot occur.
Range: 60 - 130 % of Motor FLC. Increments of : 1%

HOT/COLD RATIO
50%

The ratio between thermal Capacity available for starting a hot motor and thermal
capacity available for starting a cold motor. (A higher setting allows for a longer
starting time of hot motor before tripping).
Range: 20- 100% of Thermal Capacity. Increments of: 1%.

RUN COOL T CONST
10 MIN.

Cooling Time Constant while motor is running. When Current is smaller than
Overload Pickup, Thermal Capacity is exponentially reduced to simulate motor
cooling to (100-Hot/Cold ratio)
Range: 1 – 240 min. Increments of: 1min.

STP COOL T CONST
30 MIN.

Cooling Time Constant while motor is stopped. This time constant is normally
significantly longer than the Cooling Time Constant of a running motor.
Range: 1 – 240 min. Increments of: 1min.
Unbalance K Factor. Used to increase the motor’s equivalent current as a result of
Unbalance currents. The Unbalance currents cause a negative Sequence
Currents. The MPS3000 measures the Negative as well as positive sequence
currents and uses their values to calculate the equivalent current, given by:
LEQ = I% * √ (1 + K * (I2/ I1)² )
Where:
I% - Motor RMS (average of the three phases) current
I2 – Negative sequence Current
I1 – Positive Sequence current
Range: 0 – 15. Increments of: 1

UNBALANCE K FCTR
5

__________________________________________________________________________________

30 • PARAMETERS SETTINGS PAGES
OVERLOAD
*** SETTINGS ***

Display
RTD BIAS
OFF

RTD BIAS MINIMUM
40 °C

RTD BIAS MIDDLE
130 °C

RTD BIAS MAXIMUM
155 °C

Description
RTD Bias allows to disable RTD Bias, to use max of RTD1..3 or to use max of
RTD1..6 for the temperature bias.
Note that when enabled, the RTD BIAS can only increase the Thermal Capacity
value. It can never decrease it.
Range: OFF, T1..T3, T1..T6
RTD Minimum is the minimum bias temperature. Below this temperature, the RTD
bias has no effect on the thermal model.
Range: 10°C..RTD BIAS MIDDLE. Increment of: 1°C.
Set RTD Middle to the normal expected working temperature with 100% load. At
this point, the thermal capacity (at steady state) should be 100 – Hot/Cold ratio.
Range: RTD MINIMUM…RTD MAXIMUM. Increment of: 1°C.

Set RTD Max to the maximum allowed working temperature. At this point, the
thermal capacity should be 100%.
Range: RTD MIDDLE…250°C. Increment of: 1°C.

THERMAL LEVEL 1
80% OF CAPACITY

Thermal Capacity level 1. Normally used for alarm indication.
Range: 50 - 99 % of maximum thermal capacity. Increments of : 1%

STALL TIME FCTR
50%

Stall Time Factor. The ratio between motor thermal time constant when speed
switch is closed (indicating slow speed) to thermal time constant with open speed
switch - (indicating high speed). Operative when speed switch is used.
Range: 20 - 100 %. Increments of: 1%

__________________________________________________________________________________

31 • PARAMETERS SETTINGS PAGES
9.5.

POWER SETTINGS
POWER
*** SETTINGS ***

Display

Description

RATED PF AT FLC
0.88 LAG

Motor rated (Nameplate) power factor. Required for calculating rated power
(based on motor FLC and line volts).
Range: 0.5 – 0.99. Increment of : 0.01
Under power level 1.In percent of rated power, calculated by:
√3 * Line Volts * Motor FLC * RATED POWER FACTOR
Range: 5 - 99%. Increment of : 1%
Under Power Level 1 time delay.
Range: 1 - 120 Sec. Increment of : 1 Sec.
Under power level 2, in percent of rated power.
Range: 5 - 99%. Increment of : 1%
Under Power Level 2 time delay.
Range: 1 - 120 Sec. Increment of : 1 Sec.
Low Power factor level. Fault occurs when PF is below the set parameter for
more than Low PF Delay.
Range: 0.20 - 0.98. Increment of: 0.01
Low Power Factor Delay
Range: 1 – 120. Increment of: 1
KWH pulse relay. Set required KWH for each relay pulse.
Range: OFF, 1 – 100. Increment of: 1

UNDER PWR LVL 1
45%

U/P LVL 1 DELAY
30 SEC.
UNDER PWR LVL 2
25%
U/P LVL 2 DELAY
30 SEC.
LOW POWER FACTOR
0.80 LAG
LOW PF DELAY
30 SEC.
KWH PER PULSE
OFF

__________________________________________________________________________________

32 • PARAMETERS SETTINGS PAGES
9.6.

TEMPERATURE SETTINGS

TEMPERATURE
*** SETTINGS ***

General Note:
LEVEL 1 & 2 FAULT

Display

Fault occurs when temperature is above the set parameter for more than a fixed time
period of 2 seconds
Description

RTD TYPE
PLATINUM 100 OHM

Resistance Temperature Detector Type.
Range: Copper 10 Ohm, Platinum 100 Ohm, Nickel 120 Ohm

SENSOR 7-10 TYPE
RTD

Type of sensors T7..T10. MPS3000 can be ordered with T7..T10 measurement circuits designed
for Thermistors instead RTD.
Range: RTD, PTC Thermistor, NTC Thermistor
RTD No. 1 level 1
Range: 0 - 250 °C. Increment: 1 °C
RTD No. 1 level 2.
Range: 0 - 250 °C. Increment: 1 °C
RTD No. 2 level 1
Range: 0 - 250 °C. Increment: 1 °C
RTD No. 2 level 2
Range: 0 - 250 °C. Increment: 1 °C
RTD No. 3 level 1
Range: 0 - 250 °C. Increment: 1 °C
RTD No. 3 at level 2
Range: 0 - 250 °C. Increment: 1 °C
RTD No. 4 level 1
Range: 0 - 250 °C. Increment: 1 °C
RTD No. 4 level 2
Range: 0 - 250 °C. Increment: 1 °C
RTD No. 5 level 1
Range: 0 - 250 °C. Increment: 1 °C
RTD No. 5 level 2
Range: 0 - 250 °C. Increment: 1 °C
RTD No. 6 level 1
Range: 0 - 250 °C. Increment: 1 °C
RTD No. 6 level 2
Range: 0 - 250 °C. Increment: 1 °C
RTD (or Thermistor) No. 7 level 1
Range: 0 - 250 °C (or 25.0 KΩ). Increment: 1 °C (or 1/10 KΩ)
RTD (or Thermistor) No. 7 level 2
Range: 0 - 250 °C (or 25.0 KΩ). Increment: 1 °C (or 1/10 KΩ)
RTD (or Thermistor) No. 8 level 1
Range: 0 - 250 °C (or 25.0 KΩ). Increment: 1 °C (or 1/10 KΩ)
RTD (or Thermistor) No. 8 level 2
Range: 0 - 250 °C (or 25.0 KΩ). Increment: 1 °C (or 1/10 KΩ)
RTD (or Thermistor) No. 9 at level 1
Range: 0 - 250 °C (or 25.0 KΩ). Increment: 1 °C (or 1/10 KΩ)
RTD (or Thermistor) No. 9 level 2
Range: 0 - 250 °C (or 25.0 KΩ). Increment: 1 °C (or 1/10 KΩ)
RTD (or Thermistor) No. 10 level 1
Range: 0 - 250 °C (or 25.0 KΩ). Increment: 1 °C (or 1/10 KΩ)
RTD (or Thermistor) No. 10 level 2
Range: 0 - 250 °C (or 25.0 KΩ). Increment: 1 °C (or 1/10 KΩ)

T1 LEVEL 1
120 °C
T1 LEVEL 2
140°C
T2 LEVEL 1
120 °C
T2 LEVEL 2
140 °C
T3 LEVEL 1
120 °C
T3 LEVEL 2
140 °C
T4 LEVEL 1
120 °C
T4 LEVEL 2
140 °C
T5 LEVEL 1
120 °C
T5 LEVEL 2
140 °C
T6 LEVEL 1
120 °C
T6 LEVEL 2
140 °C
T7 LEVEL 1
80 °C
T7 LEVEL 2
100 °C
T8 LEVEL 1
80 °C
T8 LEVEL 2
100 °C
T9 LEVEL 1
80 °C
T9 LEVEL 2
100 °C
T10 LEVEL 1
80 °C
T10 LEVEL 2
100 °C

__________________________________________________________________________________

33 • PARAMETERS SETTINGS PAGES
9.7.

ANALOG I/O SETTINGS

ANALOG I/O
*** SETTINGS ***

Display
ANALOG OUT TYPE
4..20MA

ANLOG OUT 1 PAR.
AVERAGE CURRENT

ANLOG OUT 1 MIN.
0 % OF FLC

Description
Selects between 0..20 mA (or 0..1mA by special order) and 4..20 mA analog
outputs (all four). This parameter is common for all four Analog Outputs.
Range: 0..20 mA or 4..20mA.
Analog 1 output parameter. Following parameters can be selected:
• I1: RMS current of phase 1, % of motor FLC.
• I2: RMS current of phase 2, % of motor FLC.
• I3: RMS current of phase 3, % of motor FLC.
• AVERAGE CURRENT: Average (RMS) of: I1, I2, I3. % of motor FLC.
• MAX OF: I1, I2, I3: Maximum (RMS) of I1, I2, I3. % of motor FLC.
• GROUND CURRENT: I0 (Ground fault RMS leakage current). % of motor
FLC.
• V1: Vp1 (Phase 1 to Neutral RMS Voltage). % of motor FLC. % of Rated
Line Voltage.
• V2: Vp2 (Phase 2 to Neutral RMS Voltage). % of motor FLC. % of Rated
Line Voltage.
• V3: Vp3 (Phase 3 to Neutral RMS Voltage). % of motor FLC. % of Rated
Line Voltage.
• AVG. PHASE VOLTS: Average (RMS) of Vp1, Vp2, Vp3. % of motor FLC.
% of Rated Line Voltage.
• V12: VL12 (Line 1 to Line 2 RMS Voltage). % of motor FLC. % of Rated
Line Voltage.
• V23: VL23 (Line 2 to Line 3 RMS Voltage). % of motor FLC. % of Rated
Line Voltage.
• V31: VL31 (Line 3 to Line 1 RMS Voltage). % of motor FLC. % of Rated
Line Voltage.
• AVG. LINE VOLTS: Average (RMS) of VL12, VL23, VL31. % of motor
FLC. % of Rated Line Voltage.
• POWER: Power, % of rated Power.
• POWER FACTOR: Power Factor (*100).
• THERMAL CAPACITY: Thermal Capacity, %.
• MAX OF T1…T3: Max of T1, T2, T3. °C.
• MAX OF T4…T6: Max of T4, T5, T6. °C.
• MAX OF T7…T9: Max of T7, T8, T9. °C (or 1/10 KΩ for Thermistor).
• MAX OF T9…T10: Max of T9, T10. °C (or 1/10 KΩ for Thermistor).
• ANLOG OUT 1 MAX.: Analog out will track the value set in parameter
ANALOG OUT 1 MAX. with an upper limit of 100%. (this feature mainly
used for testing and maintenance)
Value for zero (0 or 4mA) output.
Range: 0..200 (Units change with parameter).

ANLOG OUT 1 MAX.
200 % OF FLC

Value for maximum (20mA, or 1mA by special order) output.
Range: 0..250 (Units change with parameter).

ANLOG OUT 2 PAR.
AVG. LINE VOLTS

Analog 2 output parameter.
Range: Same as for ANALOG OUT 1 PAR.

__________________________________________________________________________________

34 • PARAMETERS SETTINGS PAGES
ANALOG I/O
*** SETTINGS ***

Display

Description

ANLOG OUT 2 MIN.
0 % OF FLC

Value for zero (0 or 4mA) output.
Range: 0..200 (Units change with parameter).

ANLOG OUT 2 MAX.
200 % OF FLC

Value for maximum (20mA, or 1mA by special order) output.
Range: 0..250 (Units change with parameter).

ANLOG OUT 3 PAR.
THERMAL
CAPACITY

Analog 3 output parameter.
Range: Same as for ANALOG OUT 1 PAR.

ANLOG OUT 3 MIN.
0 % OF FLC

Value for zero (0 or 4mA) output.
Range: 0..200 (Units change with parameter).

ANLOG OUT 3 MAX.
200 % OF FLC

Value for maximum (20mA, or 1mA by special order) output.
Range: 0..250 (Units change with parameter).

ANLOG OUT 4 PAR.
MAX OF T1..T3

Analog 4 output parameter.
Range: Same as for ANALOG OUT 1 PAR.

ANLOG OUT 4 MIN.
0 °C

Value for zero (0 or 4mA) output.
Range: 0..200 (Units change with parameter).

ANLOG OUT 4 MAX.
200 °C

Value for maximum (20mA, or 1mA by special order) output.
Range: 0..250 (Units change with parameter).

ANLOG IN 1 TYPE
4..20mA

Selects between 0..20mA (or 0..1mA by special order) and 4..20mA analog input
type.
Range: 0..20mA (0..1mA by special order), 4..20mA..
Fault Level. Fault occurs when input is Above (or Below, if set so) Anlog In 1
Level for more than Anlog In 1 Delay.
Range: Below 0..100%, Above 1..100%.
Time Delay for Analog Input 1 Fault.
Range: 0..250 Sec.

ANLOG IN 1 LEVEL.
ABOVE 50%
ANLOG IN 1 DELAY
10 SEC.
ANLOG IN 2 TYPE
4..20mA
ANLOG IN 2 LEVEL.
ABOVE 50%
ANLOG IN 2 DELAY
10 SEC.
ANLOG IN 3 TYPE
4..20mA
ANLOG IN 3 LEVEL.
ABOVE 50%
ANLOG IN 3 DELAY
10 SEC.

Selects between 0..20mA (or 0..1mA by special order) and 4..20mA analog input
type.
Range: 0..20mA (0..1mA by special order), 4..20mA..
Fault Level. Fault occurs when input is Above (or Below, if set so) Anlog In 2
Level for more than Anlog In 2 Delay.
Range: Below 1..100%, Above 1..100%.
Time Delay for Analog Input 2 Fault.
Range: 0..250 Sec.
Selects between 0..20mA (or 0..1mA by special order) and 4..20mA analog input
type.
Range: 0..20mA (0..1mA by special order), 4..20mA..
Fault Level. Fault occurs when input is Above (or Below, if set so) Anlog In 3
Level for more than Anlog In 3 Delay.
Range: Below 1..100%, Above 1..100%.
Time Delay for Analog Input 3 Fault.
Range: 0..250 Sec.

__________________________________________________________________________________

35 • PARAMETERS SETTINGS PAGES
ANALOG I/O
*** SETTINGS ***

Display
ANLOG IN 4 TYPE
4..20mA
ANLOG IN 4 LEVEL.
ABOVE 50%
ANLOG IN 4 DELAY
10 SEC.

9.8.

Description
Selects between 0..20mA (or 0..1mA by special order) and 4..20mA analog input
type.
Range: 0..20mA (0..1mA by special order), 4..20mA..
Fault Level. Fault occurs when input is Above (or Below, if set so) Anlog In 4
Level for more than Anlog In 4 Delay.
Range: Below 1..100%, Above 1..100%.
Time Delay for Analog Input 4 Fault.
Range: 0..250 Sec.

COMMUNICATION P. SETTINGS

COMMUNICATION P.
*** SETTINGS ***

Display
BAUD RATE
19200 (MODBUS)
ADDRESS NUMBER
OFF
S. LINK PAR. SAVE
DISABLE

Description
Serial Link communication speed in bps. Disconnect and then reconnect
auxiliary supply after any change of baud rate.
Range: 1200, 2400, 4800, 9600, 19200, 38400 bps.
MPS Address on Serial Link. RS485 Allows a maximum of 32 MPS3000s
on a twisted pair.
Range: 1 - 247, 248 = OFF. Increments of: 1
When set to DISABLE, prevents setting through serial link communication.
When set to ENABLE, setting through serial link is enabled.
Range: ENABLE, DISABLE

FRONT COM ADDRES
OFF

When rear connection is used for Profibus communication link, front
communication link can be used for setting parameters.
Range: 1 - 247, 248 = OFF. Increments of: 1
Note: It is only possible to write and read through MODBUS communication (only !, parameters
cannot be displayed on screen and cannot be changed from keyboard) 20 additional setting
parameters. These parameters are numbers of MODBUS actual parameters. By writing to these
parameters, user can define a group of up to 20 parameters that can be scanned as one group.
See the MPS 3000-10 COMMUNICATION Manual for further reference.

__________________________________________________________________________________

36 • PARAMETERS SETTINGS PAGES
9.9.

TRIPPING/ALARM OPTIONS

TRIPPING / ALARM
*** OPTIONS ***

9.9.1.

Tripping Alarm Common Settings

All MPS3000 protections share the same settings described below. Accessible via the menu
Tripping/Alarm Options.
Area
Function
Setting
Observation
Trip only
Set Trip:
Mode
Behavior upon Fault
ENABLE
Trip LED illuminates.
Set Alarm:
Output D relay: if configured as "Trip", energizes. If
DISABLE
configured to "Trip - Fail Safe", de-energizes.
Output A, Output B and Output C relays respond
according to their configurations.
Output A and Output B LEDs, displays the status of
Output A & B relays.
Alarm only Set Trip:
Mode
Behavior upon Fault
DISABLE
Alarm LED illuminates.
Set Alarm:
Output A,B,C relays respond according to their
ENABLE
configurations,
Output A and Output B LEDs, displays the status of
Output A & B relays.
Mode

Alarm and
Trip

Set Trip:
ENABLE
Set Alarm:
ENABLE

Behavior upon Fault
Trip and Alarm LEDs illuminate.
Output A,B,C,D relays respond according to their
configurations,
Output A and Output B LEDs, displays the status of
Output A & B relays.

Mode

Disabled

Set Trip:
DISABLE
Set Alarm:
DISABLE

Behavior upon Fault
The MPS3000 completely ignores the fault.

Reset

Auto Reset

Set Auto Rst:
ENABLE.
(when not
required set to
DISABLE)

The MPS3000 resets itself automatically when the fault cause
disappears. The Auto Reset is activated after a 2 second delay.
It is recommended to always Disable Auto Reset.
On some faults, when Auto Reset is enabled, the MPS3000 trips
and after a 2 Sec. delay resets itself automatically. The fault
message on the LCD disappears after 2 Sec.
Example: On "U/C Level 1", when Auto Reset function is
Enabled, the contactor opens and causes automatic Reset. The
motor stops and the "U/C Level 1" message is displayed for only
2 Sec.

__________________________________________________________________________________

37 • PARAMETERS SETTINGS PAGES
Area
Reset

Function
Panel
Reset

Setting
Set Panel Rst:
ENABLE.
(when not
required set to
DISABLE)

Observation
Activated by the RESET key on the MPS3000 front panel.
When Panel resetting is not permitted set Panel RST: DSABL.
For critical faults, such as "Overload" and "Ground Fault", it is a
good practice to prevent Panel Resetting.
An authorized person (key holder - few key options are
available, according to Discrete input A..D settings)) can always
reset any fault.
Note:
If Authorized Key is locked, front panel Resetting is effective if:
a. Panel Reset parameter is "Enabled." For the specific fault
displayed.
For MPS3000-C, two additional conditions must be fulfilled:
b. There is no Start signal (to prevent start as a result of
resetting).
c. Local/Remote input is in "Local" mode, and

Reset

Remote
Reset

Set Remote
Reset :
ENABLE

Reset

Reset via
serial link.

Output
Relays

Enable
Relay-A
activation
upon trip
or Alarm

Set to
ENABLE or
DISABLE

Output
Relays

Enable
Relay-B
activation
upon trip
or Alarm

Set to
ENABLE or
DISABLE

The MPS3000 incorporates programmable four Discrete (digital)
inputs. Each one can be set for Remote Reset.
The MPC3000-C incorporates an additional PLC Reset input.
The following conditions will enable PLC Reset.
a. Local/Remote input is switched to Remote, and
b. PLC/Serial Port input is switched to PLC
c. There is no Start signal.
Use only momentary reset inputs. !
For MPS3000, the reset via serial link is always accepted.
For MPS3000-C:
The following conditions will enable reset via the serial link.
a. Local/Remote input is switched to Remote, and
b. PLC/Serial Port input is switched to Serial Port.

Output Relay-A is activated when trip or alarm occurs.
Physical activation of the relay occurs if a fault/trip occurs for
any of the trip/alarm conditions for which it is set.
The relay can also be used (when configured as (I>0) After
Trip), to trip an upstream breaker, if the contactor is welded, so
current is still > 10% of rated, after trip.
Output Relay –B is activated when trip or alarm occurs.
Physical activation of the relay occurs if a fault/trip occurs for
any of the trip/alarm conditions for which it is set.

__________________________________________________________________________________

38 • PARAMETERS SETTINGS PAGES

9.9.2.

Multiple Alarm/Trip Considerations

The MPS3000 is designed to accept and store the first alarm it detects. If this alarm has not been reset
and an additional alarm occurs, the MPS3000 will not display the second alarm on the LCD nor assign it
to the Fault Data page.
Example: If UNBALANCE ALARM occurs and then a THERMAL PRE-ALARM occurs, the MPS3000
will continue displaying UNBALANCE ALARM message on both, LCD and Fault Data page. This is to
assist the user in establishing the cause of the alarm.
In case a trip occurs after an alarm, the trip message will override the alarm message.
The table on section 9.9.4 page 48 summarizes the seven factory default settings for each of the faults,
and describes when each fault active.
Notes: Prior to modifying this table, make a copy of this table and do not mark on the original. Mark
your settings in the empty space available for each value.
For operation in PROTECTION ONLY mode, disable all PLC Reset faults.

__________________________________________________________________________________

39 • PARAMETERS SETTINGS PAGES

Tripping/Alarm Individual Settings
9.9.3.1.
MAX START TIME
Fault occurs when starting time is longer then MAX START TIME setting. The MPS3000 assumes
end of starting process, when motor current decreases below 110% of the OVERLOAD PICKUP
value.
For a default value of 105%, end of starting process is detected at 115% of MOTOR FLC (Motor Full
Load Current).
9.9.3.

Note: The following description presents the previous mentioned five setting options (Trip, Alarm,
Auto Reset, Panel Reset, PLC Reset) available for MAX START TIME. In order to keep the text brief
we avoided repeating this description for each of the remaining 51 protection functions.
When Enabled, if starting time exceeds MAX START TIME setting, the
MPS3000 trips. If Output A and Output B relays are configured as contactors A
& B (common setting for MPS3000-C), then internal relays A and B will open,
opening motor contactors.
If CONFIG. OUTPUT D parameter is set to TRIP, output D relay energizes.
If CONFIG. OUTPUT D parameter is set to TRIP - FAIL SAFE, output D relay
de-energizes.
Trip condition is latched.
Range: DISABLE, ENABLE
MAX. START TIME
When Enabled, and in case starting time exceeds MAX START TIME setting, If
Alarm: ENABLE
CONFIG. OUTPUT C parameter was set to ALARM FAIL SAFE, output C relay
de-energizes. If set to ALARM, output C relay energizes. Alarm condition is
latched.
Range: DISABLE, ENABLE
MAX START TIME
When Enabled, Automatically resets MAX START TIME fault after motor stops.
AUTO RST: DSABL.
Range: DISABLE, ENABLE.
MAX. START TIME
When Enabled, allows Front panel resetting
PANEL RST.:ENABL
Range: DISABLE, ENABLE.
MAX. START TIME
When Enabled, allows PLC (Remote) resetting.
REMOT RST:ENABL
Range: DISABLE, ENABLE.
MAX. START TIME
When Enabled, causes output A relay to energize upon MAX START TIME
OUTPUT A.:DISABL
fault.
Range: DISABLE, ENABLE.
MAX. START TIME
When Enabled, causes output B relay to energize upon Max Start Time fault.
OUTPUT B: DISABL
Range: DISABLE, ENABLE.
9.9.3.2.
TOO MANY STARTS
Fault occurs when the number of starts exceeds the NUMBER OF STARTS setting during STARTS
PERIOD time. Auto Reset, when Enabled, occurs after START INHIBIT time elapsed.
If one of the Discrete inputs A, B, C or D is configured as an Emergency Restart input and if this input
(the Emergency Switch) is closed, then all starts performed are ignored. So, TOO MANY STARTS fault
is automatically disabled.
Note: Each output relay (A and B), can be configured as # OF STRTS PRE ALRM (Number Of Starts
Pre Alarm). In this mode the relay is energized if motor is stopped, as long as a new start would cause
TOO MANY STARTS fault. It can be used to prevent the next start as long as it is not allowed, simply
by connecting the output relay (A or B) in series with the mains contactor.
9.9.3.3.
UNDER CURRENT LEVEL 1
For a running motor, fault occurs when current decreases below U/C LEVEL 1 setting, for a time longer
than U/C LEVEL 1 DELAY setting.
Auto reset, when Enabled, occurs when current is above U/C LEVEL 1, or when motor stops or trips.
9.9.3.4.
UNDER CURRENT LEVEL 2
For a running motor, fault occurs, when current decreases below U/C LEVEL 2 setting for a time longer
than U/C LEVEL 2 DELAY setting.
Auto reset, when Enabled, occurs when the current increases above U/C LEVEL 2, or when the motor
stops or trips.
9.9.3.5.
LOAD INCREASE
Active only after start process ended (after current decreased to below 110% of OVERLOAD PICKUP
MAX. START TIME
Trip: DISABLE

__________________________________________________________________________________

40 • PARAMETERS SETTINGS PAGES
value). Fault occurs when motor average current is above LOAD INCREASE setting for more than 5
seconds. Auto reset, when Enabled, occurs when current decreases to below the LOAD INCREASE
setting, or when motor stops or trips.
9.9.3.6.
OVER CURRENT LEVEL 1- JAM
This identifies a jam condition for a "running" motor. Fault occurs if after start process has ended, motor
average current increases above O/C LEVEL-JAM 1 setting value for more than O/C LVL 1 DELAY.
Auto reset, when Enabled, occurs when current decreases below O/C LEVEL 1-JAM, or when motor
stops or trips.
9.9.3.7.
OVER CURRENT LEVEL 2 - SHORT
This identifies short circuit condition. Fault occurs when any of the motor's line currents exceeds O/C
LEVEL 2- SHORT value, for more than O/C LVL 2 DELAY time.
Auto reset, when Enabled, occurs when current decreases to below the O/C LEVEL 2- SHORT value,
or when trips motor.
Notes:
1. True RMS line currents are measured, disregarding the average "DC" value. It is designed to prevent
nuisance tripping at the very beginning of the starting process (during which DC decaying current is
superimposed on the AC Current).
2. Minimum setting of O/C LEVEL 2 DELAY is 0. At 0 setting, the actual time delay is less than 70 ms.
3. O/C LEVEL 2- SHORT is prevented when the highest of any of the line currents exceeds CURRENT
INHIBIT setting. It is designed to prevent opening of motor contactor under high short circuit
conditions to protect its contacts from being damaged. Fault display: O/C LEVEL 2- SHORT.
4. THERMAL LEVEL 2 (Overload) overrides CURRENT INHIBIT setting.
9.9.3.8.
THERMAL LEVEL 1 and 2
The MPS3000 simulates the thermal condition of the motor and stores it in a thermal register. The
content of the thermal register is called THERMAL CAPACITY. It simulates the motor temperature.
Thermal capacity of 100% is equivalent to a motor running at the absolute maximum allowed
temperature. At this point the motor must be tripped.
The following parameters are used to calculate the Thermal Capacity.
CURVE MULTIPLIER
This is a multiplier of the basic standard curve. It enables to shift the entire overload curve. For
example, when Curve Multiplier is set to 1, time to trip of a cold motor at 2*In is 29.1 Sec. If Curve
Multiplier is set to 10, time to trip of a cold motor at 2*In is 291 Sec.
OVERLOAD PICKUP
THERMAL LEVEL 2 is not active for currents below the OVERLOAD PICKU" value. For a standard
motor, leave OVERLOAD PICKUP at its default value of 105%. When current increases above this
value a fault will occur after a given time. This time depends on the present value of the THERMAL
CAPACITY, on the current level and on CURVE MULTIPLIER parameter.
HOT/COLD RATIO
This parameter, determines the ratio of the available THERMAL CAPACITY for a Hot Motor and for a
Cold Motor.
The THERMAL CAPACITY of a Hot motor, is (100 - Hot/Cold Ratio).
Cold Condition - When the motor is stopped for a long time, its THERMAL CAPACITY is zero.
Therefore, for a cold motor, all the 100% of THERMAL CAPACITY are available for heating (before a
trip occurs).
Hot Condition - When a motor is running, its temperature increases, and after it has been running for a
long time at a current, slightly below the OVERLOAD PICKUP value, a "Hot Condition" has been
created. Now, less than 100% of the THERMAL CAPACITY is available.
Example: If Hot/Cold Ratio is set to 60%, then for a "Hot" motor, 40% of the THERMAL CAPACITY was
used, leaving 60% for additional heating.
For a motor, running for a prolonged time, at lower than OVERLOAD PICKUP current value, the
THERMAL CAPACITY is related to the value of the current.
For Example, if motor current is only ½ of the OVERLOAD PICKUP level, then (K=(½)*40%=20%) only
20% of the THERMAL CAPACITY has been used, leaving 80% for additional heating.
RUN COOL T CONST
This is the Cooling Time Constant for a running motor. When motor current is below the OVERLOAD
PICKUP value, THERMAL CAPACITY is exponentially reduced, simulating motor cooling. Two different
cooling time constants must be used. Cooling time constant is significantly higher for a stopped motor.
STP COOL T CONST
This is the Cooling Time Constant for a stopped motor. When motor is stopped, THERMAL CAPACITY
is exponentially reduced, simulating motor cooling. Normally, Cool Time Stop is 3 – 6 times higher than
__________________________________________________________________________________

41 • PARAMETERS SETTINGS PAGES
the RUN COOL T CONST.
UNBALANCE K FCTR (Unbalance Bias Factor)
Unbalanced currents cause additional motor (mainly Rotor) heating. Unbalanced currents cause
negative rotating field, which generates rotor voltages and currents at twice the rated frequency. Further
heating is caused as a result of the Skin Effect, which causes significant increase of rotor resistance.
The Skin Effect is caused by the high frequency induced by the negative sequence field (compared to a
frequency of approximately 1Hz, caused by the positive sequence field).
This additional heating is entered into the thermal model using the UNBLANCE K FCTR This factor
changes the value of the motor equivalent current (LEQ) used as the input current for the thermal
model.
LEQ is given by:
LEQ = I% * √ (1 + K * (I2/ I1) ²)
Where: I% - Motor RMS (average of the three phases) current
I2 - Negative sequence Current
I1 - Positive Sequence current
K - The above Unbalance Bias Factor
LEQ – Equivalent current, which takes into consideration the negative sequence extra heating.
RTD BIAS
The Thermal model, as explained up to this point is based on current measurements only. It assumes
normal ambient working temperature of approximately 40°C. If the ambient temperature is higher, or if
forced and natural cooling of the motor is malfunctioning, the winding temperature can be significantly
increased.
The RTD BIAS is a possible way to take the actual winding temperature into consideration. The RTD
are relatively slow elements, however they sense accurately the real temperature of the windings.
Therefore, the RTD measurement can be used to correct the thermal model for slow motor heating,
according to the actual winding temperature. The first parameter RTD BIAS allows to disable RTD
BIAS, to use RTD1..3 or to use RTD1..6 for the temperature bias.
Note that when enabled, the RTD BIAS can only increase the THERMAL CAPACITY value. It can
never decrease it.
RTD BIAS MIN, RTD BIAS MID, RTD BIAS MAX
RTD BIAS is entered to the thermal model by means of the three following parameters: RTD BIAS MIN,
RTD BIAS MID, RTD BIAS MAX. The RTD BIAS curve is created by two straight lines drawn between
the following three points.
First point (RTD MIN,0): RTD MIN is the (horizontal) Minimum Bias temperature. Below this
temperature the RTD Bias has no effect on the thermal model.
Second point (RTD BIAS MID,100-HOT/COLD RATIO): RTD BIAS MID is the normal expected working
temperature with 100% load. At this point, the thermal capacity should be 100 – HOT/COLD RATIO.
Third point (RTD BIAS MAX,100): RTD BIAS MAX is the maximum allowed working temperature. At
this point, the thermal capacity should be 100%.
When the overload thermal capacity (including Unbalance Bias), is lower than the THERMAL
CAPACITY dictated by the RTD BIAS, it will be automatically increased to the value of the RTD BIAS
curve value.
Note: If RTD temp is equal or above RTD BIAS MAX the THERMAL CAPACITY will be increased to
slightly below 100%. This is to prevent Overload Trip, if the value of the equivalent current is below
OVERLOAD PICKUP value. Normally, RTD trip should occur at or before this point.

__________________________________________________________________________________

42 • PARAMETERS SETTINGS PAGES

Figure 1 – RTD BIAS
THERMAL LEVEL 1
This setting parameter is intended to be used for alarm only. When THERMAL CAPACITY exceeds the
set value, and if enabled, the MPS3000 sets an alarm signal. A host computer can use this signal to
read TIME TO TRIP and determine the time left until the MPS3000 will trip.
STALL TIME FACTOR
It is possible to connect a Speed Switch to improve the thermal protection of a motor. When the speed
switch detects that the motor is not turning, CURVE MULTIPLIER value is automatically decreased,
according to STALL TIME FACT setting.
STALL TIME FACT is the ratio between motor heating thermal time constant when Speed Switch is
closed (indicating slow speed) to the time constant in normal starting process. The Speed Switch
setting is one of the possible settings for any one of the discrete inputs A, B, C or D.
For the MPS3000-C there is also an additional special input for the speed switch.
Range: 20 - 100 %. Increments of: 1%
The last value of the Thermal Capacity is stored in the non Volatile memory during auxiliary supply
failure or disconnection. On restoration of supply, the former value will be re-established.
Note: THERMAL LEVEL 2 overrides CURRENT INHIBIT settings.
Next Figure and Table specify overload trip time delay for Curve Multiplier = 6.

Figure 2 – Time vs. I/In at CURVE MULTIPLIER=6
__________________________________________________________________________________

43 • PARAMETERS SETTINGS PAGES
Thermal Overload Table:
I / In
TIME
I / In
-

[SEC]

-

TIME

I / In

TIME

I / In

TIME

I / In

TIME

[SEC]

-

[SEC]

-

[SEC]

-

[SEC]

1.01
26122
3.20
56.8
5.50
17.9
7.80
8.8
10.10
5.2
1.05
5122
3.30
53.1
5.60
17.3
7.90
8.5
10.20
5.1
1.10
2500
3.40
49.7
5.70
16.7
8.00
8.3
10.30
5.0
1.20
1193
3.50
46.6
5.80
16.1
8.10
8.1
10.40
4.9
1.30
760.8
3.60
43.9
5.90
15.5
8.20
7.9
10.50
4.8
1.40
546.8
3.70
41.3
6.00
15.0
8.30
7.7
10.60
4.7
1.50
419.9
3.80
39.0
6.10
14.5
8.40
7.5
10.70
4.6
1.60
336.5
3.90
36.9
6.20
14.0
8.50
7.4
10.80
4.5
1.70
277.7
4.00
35.0
6.30
13.6
8.60
7.2
10.90
4.5
1.80
234.3
4.10
33.2
6.40
13.1
8.70
7.0
11.00
4.4
1.90
201.1
4.20
31.5
6.50
12.7
8.80
6.9
11.10
4.3
2.00
174.9
4.30
30.0
6.60
12.3
8.90
6.7
11.20
4.2
2.10
153.9
4.40
28.6
6.70
12.0
9.00
6.6
11.30
4.1
2.20
136.7
4.50
27.3
6.80
11.6
9.10
6.4
11.40
4.1
2.30
122.3
4.60
26.0
6.90
11.3
9.20
6.3
11.50
4.0
2.40
110.3
4.70
24.9
7.00
10.9
9.30
6.1
11.60
3.9
2.50
100.0
4.80
23.8
7.10
10.6
9.40
6.0
11.70
3.9
2.60
91.1
4.90
22.8
7.20
10.3
9.50
5.9
11.80
3.8
2.70
83.4
5.00
21.9
7.30
10.0
9.60
5.8
11.90
3.7
2.80
76.7
5.10
21.0
7.40
9.8
9.70
5.6
12.00
3.7
2.90
70.8
5.20
20.1
7.50
9.5
9.80
5.5
3.00
65.6
5.30
19.4
7.60
9.2
9.90
5.4
3.10
60.9
5.40
18.6
7.70
9.0
10.00
5.3
Table values are for Curve Multiplier = 6. For other value of Curve Multiplier divide table values by 6
and multiply by the required Curve Multiplier:
TIME = Time from table * Curve Multiplier / 6.
Example 1: Find time to trip of a cold motor at 5In with CM = 8
From the above table, time to trip at 5In, with CM = 6 is 21.9 Sec.
With CM = 8, time to trip is 8 / 6 * 21.9 = 29.2 Sec.
To find the time for a hot motor find first the time as explained above, then multiply by the HOT/COLD
RATIO.
Example 2: Find time to trip of a hot motor for the above example while HOT/COLD RATIO is set to
60%.
Solution:
Multiply the result of Example 1 by 0.6 (60%). 29.2 * 0.6 = 15.5 Sec.
THERMAL CAPACITY RESET METHOD
It is not possible to reset (to empty) the THERMAL CAPACITY.
Reset, of THERMAL LEVEL 2, is prevented until THERMAL CAPACITY “cools down" bellow 50%.
Therefore, even for a “Key Holder” reset of THERMAL LEVEL 2 trip is not possible for a cooling down
period of time.
EMERGENCY RESTART
If one of the Discrete inputs A,B,C or D is configured as an EMERGENCY RESTART input and if this
input (Emergency Restart Switch) is closed, then the THERMAL CAPACITY automatically resets to 0
every time the motor is stopped. It is done to allow immediate restarting even if motor is hot. Closing the
Emergency Restart switch while motor is already stopped causes also an immediate reset of the
thermal capacity. As long as motor is running, the Emergency Restart switch has no effect. Therefore
the MPS3000 can still trip for Thermal Level 2 even if the Emergency Restart switch is closed.
Note: If an EMERGENCY RESTART input is used, RTD BIAS should be set to OFF to ensure resetting
of the Thermal capacity while motor is stopped.
Warning: Use only for emergency case. Open switch immediately after Emergency is ended.
9.9.3.9.
UNBALANCE LEVEL 1
Current unbalance is the Ratio between motor’s Negative Sequence current to its Positive Sequence
current.
Unbalance = I2 / I1
(Limited to: Unbalance <= 100%)
__________________________________________________________________________________

44 • PARAMETERS SETTINGS PAGES
Where: I2 = Negative seq. current, I1= Positive seq. current
If Motor average RMS current is less than the rated Motor FLC, then the Unbalance value is decreased
by the factor Iavg / FLC, where Iavg is the RMS average of the three phase currents.
Unbalance = (I2 / I1) * (Iavg / FLC)
This method prevents nuisance alarming at low currents. The MPS3000 initiates an alarm,
UNBALANCE MIN T seconds after the actual unbalance value increases above 50% of UNBALANCE
LEVEL 2 setting.
Auto reset, when Enabled, occurs when the actual unbalance decreases to below 50% of UNBALANCE
LEVEL 2 setting, or when motor stops or trips.

9.9.3.10.

UNBALANCE LEVEL 2

UNBALANCE LEVEL 2 setting, determines the minimum value of actual unbalance for UNBALANCE
LEVEL 2 fault.
If the actual unbalance exceeds UNBALANCE LEVEL 2 setting, a time delay is initiated. The time delay
is related to U/B LVL 2 MAX T parameter, and to the inverse of the square of the actual unbalance
(smaller delay for larger unbalance). Minimum value of the time delay is UNBALANCE MIN T seconds.
Auto reset, when enabled, occurs when the actual unbalance decreases to below UNBAL. LEVEL 2
setting, or when motor stops or trips. See next figure to select the required trip time for any unbalance
value.
Note:
Mains phase sequence (positive or negative) is used while calculating positive and negative sequence
currents. Mains phase sequence is determined, using to the mains (three phase) voltages.
If the MAINS (all three phases) is not connected to the MPS3000, positive MAINS sequence is
assumed. If currents negative sequence is present, UNBALANCE TRIP (if enabled) as well as wrong K
factor (Unbalance Bias for Thermal Overload) influence is expected.

Setting U/B LEVEL 2 MAX T

TIME [Sec]

9.9.3.11.

10

UNBALANCE [%]
Figure 3 – Unbalance Protection Time Delay
Notes: 1. Select the required trip/alarm time on the vertical axis (at 10% unbalance).
2. Draw horizontal line at the selected point (for example, 5 Sec.).
3. Select an unbalance point (for example 40%).
__________________________________________________________________________________

45 • PARAMETERS SETTINGS PAGES
4. Draw a vertical line at the selected point (the two lines intersect).
5. Draw a parallel line to the diagonal lines at the intersection point.
6. Insert the value of the time at the intersection point (from 5) into parameter U/B LVL 2 MAX
T (for example: 80sec).

9.9.3.12.

U/V LEVEL (Undervoltage Level)

Active only after the start signal. Fault occurs when the average of the three line to line voltages
decreases below U/V LEVEL, for more than U/V DELAY setting. It is possible to connect single phase
voltage to the line voltage inputs (terminals 78, 79, 80) and link them together (see section 5.3 - Line
Voltages on page 9).
Auto reset, when ENABLED, occurs when average line voltage increases above the U/V Setting value,
or when motor trips.
Note: If U/V fault is required even when motor is stopped, option 1 (U/V active in stop condition) should
be ordered (consult factory). MPS3000-P detects Start / Run / Stop conditions according to the level of
current. If, during normal operation (mains is connected and motor is running), mains is disconnected
and under voltage fault is required use option 1 (consult factory).

9.9.3.13.

O/V LEVEL 1 (Over Voltage Level 1)

This is active only after the start signal. Fault occurs when the average of three line to line voltages
increases above O/V LEVEL 1 setting, for more than 1 second.
Auto reset, when Enabled, occurs when average line voltage decreases below O/V LEVEL 1 value, or
when the motor trips.

9.9.3.14.

O/V LEVEL 2 (Over Voltage Level 2)

This is active only after the start signal. Fault occurs when the average line to line voltage increases
above O/V LEVEL 2 setting, for more than O/V LVL 2 DLY setting.
Auto reset, when Enabled, occurs when average line voltage decreases to below O/V LEVEL 2 value,
or when the motor trips.

9.9.3.15.

PHASE LOSS

The MPS3000 calculates voltage unbalance according to the difference between maximum and
minimum values of the line to line voltages, related to the LINE VOLTS (Vn) setting. Fault occurs when
the unbalance level exceeds 20% for more than 2 seconds
Auto reset, when enabled, occurs when the actual Unbalance decreases below 20%.
Note: Set Trip and Alarm to DISABLE, if three phase voltage is not measured.

9.9.3.16.

PHASE SEQUENCE

Always Active. Fault occurs when the phase sequence is reversed for more than 2 seconds.
Disable PHASE SEQUENCE both for Trip and for Alarm, if only a single phase is connected to the
voltage input terminals.
Auto reset, when Enabled, occurs when a correct phase sequence is detected.
Note: Set Trip and Alarm to DISABLE, if three phase voltage is not measured.

9.9.3.17.

GND FAULT LEVEL 1 (Ground Fault Level 1)

Fault occurs when Ground current exceeds GND FAULT LEVEL 1 setting for more than the G/F LEVEL
1 DELAY setting.
Auto reset, when Enabled, occurs when Ground current decreases below GND FAULT LEVEL 1
setting. While starting, G/F DURING START setting parameter overrides G/F LEVEL 1. Designed to
eliminate nuisance alarming during start process (with high currents) when residual C/T connection is
used.

9.9.3.18.

GND FAULT LEVEL 2 (Ground Fault Level 2)

Fault occurs when Ground current exceeds GND FAULT LEVEL 2 setting for more than G/F LEVEL 2
DELAY setting.
Minimum setting of G/F LEVEL 2 DELAY is 0. At 0 setting, the actual time delay is less than 70 ms.
Auto reset, when Enabled, occurs when Ground current decreases below GND FAULT LEVEL 2
setting. While starting, G/F DURING START setting parameter overrides G/F LEVEL 2. Designed to
eliminate nuisance tripping during start process (with high currents) when residual C/T connection is
used.
Note: GND FAULT LEVEL 2 fault is prevented when the highest of any of the line currents Exceeds
CURRENT INHIBIT value. It is designed to prevent opening of motor contactor under high short circuit
conditions, to protect its contacts from being damaged.

9.9.3.19.

COMM. PORT FAILED (Communication Port Failed)

Fault occurs when the MPS3000 detects three consecutive transmissions from the host computer, in
which a parity bit, and/or the CRC word are wrong.
Auto reset, when Enabled, occurs when a transmission from the host computer is received properly.
__________________________________________________________________________________

46 • PARAMETERS SETTINGS PAGES

9.9.3.20.

INTERNAL FAILURE

The MPS3000 incorporates a built in Test program. Operating the self test program is done from a
special
TEST/MAINTENANCE OPTIONS page. SELF TEST PASSED message, after completion of the built in
test, indicates that the MPS3000 functions properly. SELF TEST FAILED, together with an error code
(for factory use only) and Internal Fault Led "ON" indicates a fault condition.
Auto reset, when Enabled, occurs when a successful test was performed and its result is SELF TEST
PASSED message.
Note: Most of the MPS3000 self test programs are running continuously (much slower then the main
program) in the "background".

9.9.3.21.
CONTROL CIR. OPEN & WELDED CONTACTOR (Control
Circuit Open & Welded Contactor)
The MPS3000-C determines if the motor contactors are open or closed by checking the position of their
auxiliary contacts.
Any change in the position of the internal relays A and B (controlling the contactors) is followed by
checking their contacts position.
Please note that the CONTROL OPEN / WELDED CONTACTOR protections for contactor A are
operative only if CONFIG. INPUT A and B are set to CONTACTOR A N.C. and N.O. respectively. Same
is correct for CONTACTOR B and CONFIG. INPUT C and D.
CONTROL CIR. OPEN: Fault occurs, if a change in the contactor's auxiliary contacts is not recognized
after energizing the internal relays A or B. Such a situation usually indicates, a CONTROL CIR. OPEN
fault.
WELDED CONTACTOR: Fault occurs, if a change in the contactor's auxiliary contacts is not
recognized after
de-energizing the internal relays A or B. Such a situation usually indicates a WELDED CONTACTOR
fault.
Auto reset, when Enabled, occurs when motor contactors properly follow the MPS3000-C commands.
Note: If motor contactors auxiliary contacts are not connected to the MPS3000-C Inputs, both the
alarm and trip of CONTROL CIR. OPEN and WELDED CONTACTOR faults must be disabled.
Note: When CONTROL CIR. OPEN and WELDED CONTACTOR faults are disabled, "Hard-wired
Start" and "Hard-Wired Stop" which receive information from the contactors auxiliary contacts are
inoperative.

9.9.3.22.

EXTERNAL FAULT 1 / 2 / 3

EXTERNAL FAULT 1, 2 or 3 occurs when the MPS3000 detects closed contact between the
EXTERNAL FAULT 1, EXTERNAL FAULT 2 or EXTERNAL FAULT 3 input terminals respectively.
These inputs can be used for any external faults.
In the MPS3000, each one of the Discrete inputs A...D can be configured for an EXTERNAL FAULT.
The MPS3000-C, has additional three inputs specifically designed for EXTERNAL FAULTS 1...3.
Auto reset of EXTERNAL FAULT X, when Enabled, occurs when the EXTERNAL FAULT X input circuit
opens.

9.9.3.23.

RTD 1-10, LEVEL 1-2 (Temperature 1.. 10 Level 1.. 2)

High temperature condition is detected according to RTD measured resistance (RTD is a positive
temperature coefficient device). For TX LEVEL 1 (or TX LEVEL 2) fault condition is detected when
the measured resistance of any channel x exceeds its TX LEVEL 1 (or TX LEVEL 2) setting. Fault
occurs after a fixed time delay of 2 seconds. Auto reset, when Enabled, occurs when RTD resistance
decreases below RTD x LEVEL 1 (or RTD x LEVEL 2).
Notes:
1.
A different model of MPS3000 incorporates six RTD input circuits plus four Thermistor input
circuits. When this type of unit is used, PTC (Positive Temperature Coefficient) or NTC (Negative
Temperature Coefficient) types of thermistors can be selected. If PTC is selected, Fault occurs
when resistance is above the set value. If NTC is selected, fault occurs when resistance is below
the set value.
2.
If the RTD connector is suddenly disconnected, the MPS reads ????. If Level 1 is set as Alarm
and Level 2 is set as Trip the MPS3000 will cause Alarm only and will not Trip.
The table below shows the resistances of the three commonly used types of RTDs.
Please note that Copper RTD requires different model of MPS3000 than the PT100 or Ni120.

__________________________________________________________________________________

47 • PARAMETERS SETTINGS PAGES
Resistance/Temperature Conversion Table
TEMP
(°C)

Copper
10 Ohms

Pt.100
Ohms
(DIN 43760)

Ni 120
Ohms

0
10
20
30
40
50
60
70
80
90
100
110
120
130
140
150
160
170
180
190
200

9.04
9.42
9.81
10.19
10.58
10.97
11.35
11.74
12.12
12.51
12.90
13.28
13.67
14.06
14.44
14.83
15.22
15.61
16.00
16.39
16.78

100.00
103.90
107.79
111.67
115.54
119.40
123.24
127.07
130.89
134.70
138.50
142.29
146.06
149.82
153.58
157.32
161.04
164.76
168.46
172.16
175.84

120.00
127.17
134.52
142.06
149.80
157.75
165.90
174.27
182.85
191.64
200.64
209.85
219.29
228.95
238.84
248.95
259.30
269.89
280.77
291.95
303.46

9.9.3.24.

UNDER PWR LVL 1 (Under Power Level 1)

For a running motor, fault occurs when motor power decreases below UNDER PWR LVL 1 setting for a
period of time longer than U/P LVL 1 DELAY setting.
Auto reset, when Enabled, occurs when the power increases above UNDER PWR LVL 1 level or when
the motor trips.
Note: Set Trip and Alarm to DISABLE, if three phase voltage is not connected.

9.9.3.25.

UNDER PWR LVL 2 (Under Power Level 2)

For a running motor, fault occurs when motor power decreases below UNDER PWR LVL 2 setting for a
period of time longer than U/P LVL 2 DELAY setting.
Auto reset, when Enabled, occurs when the power increases above UNDER PWR LVL 2 level or when
the motor trips.
Note: Set Trip and Alarm to DISABLE, if three phase voltage is not connected.

9.9.3.26.

LOW POWER FACTOR

For a running motor, fault occurs when motor power factor decreases below LOW POWER FACTOR
setting for a period of time longer than LOW PF DELAY setting.
Auto reset, when Enabled, occurs when the power factor increases above LOW POWER FACTOR
level or when the motor trips.
Note: Set Trip and Alarm to DISABLE, if three phase voltage is not connected.

9.9.3.27.

ANALOG INPUTS FAULTS

The MPS3000 incorporates four analog inputs assigned for connecting analog sensors, like Vibration
Sensor or Level Sensor. When Sensor output is outside minimum or maximum allowed levels, for more
than the set time delay, the MPS3000 generates a fault.

__________________________________________________________________________________

48 • PARAMETERS SETTINGS PAGES

9.9.4.

Tripping/Alarm Default Settings

In this table, (+) stands for ENABLED, (-) for DISABLED.
No. Fault
Trip
Alarm
Auto Reset
1. Max Start Time
(-) ( ) (+) ( )
(-) ( )
2. Too Many Starts
(-) ( ) (-) ( )
(-) ( )
3. U/C Level 1
(-) ( ) (+) ( )
(-) ( )
4. U/C Level 2
(-) ( ) (-) ( )
(-) ( )
5. Load Increased
(-) ( ) (+) ( )
(-) ( )
6. O/C Level 1- Jam
(+)( ) (+) ( )
(-) ( )
7. O/C Level 2- Short
( + ) ( ) (+ ) ( )
(-) ( )
8. Thermal Level 1
(-) ( ) (+) ( )
(-) ( )
9. Thermal Level 2
(+)( ) (+) ( )
(-) ( )
10. Unbalance Level 1
(-) ( ) (+) ( )
(-) ( )
11. Unbalance Level 2
(+)( ) (+) ( )
(-) ( )
12. Undervoltage
(-) ( ) (+) ( )
(-) ( )
13. O/V Level 1
(-) ( ) (+) ( )
(-) ( )
14. O/V Level 2
(+)( ) (+) ( )
(-) ( )
15. Phase Loss
(+)( ) (+) ( )
(-) ( )
16. Phase Sequence
(+)( ) (+) ( )
(+)( )
17. GND Fault Level 1
(-) ( ) (+) ( )
(-) ( )
18. GND Fault Level 2
(+)( ) (+) ( )
(-) ( )
19. Comm. Port Failed
(-) ( )
(-) ( )
(+)( )
20. Internal Failure
(-) ( ) (+) ( )
(-) ( )
21. Control Cir. open
(-) ( ) (-) ( )
(-) ( )
22. Welded Contactor
(-) ( ) (-) ( )
(-) ( )
23. External Fault 1
(-) ( ) (-) ( )
(-) ( )
24. External Fault 2
(-) ( ) (-) ( )
(-) ( )
25. External Fault 3
(-) ( ) (-) ( )
(-) ( )
26. RTD 1 Level 1
(-) ( ) (-) ( )
(-)( )
27. RTD 1 Level 2
(-) ( ) (-) ( )
(-)( )
28. RTD 2 Level 1
(-) ( ) (-) ( )
(-)( )
29. RTD 2 Level 2
(-) ( ) (-) ( )
(-)( )
30. RTD 3 Level 1
(-) ( ) (-) ( )
(-)( )
31. RTD 3 Level 2
(-) ( ) (-) ( )
(-)( )
32. RTD 4 Level 1
(-) ( ) (-) ( )
(-)( )
33. RTD 4 Level 2
(-) ( ) (-) ( )
(-)( )
34. RTD 5 Level 1
(-) ( ) (-) ( )
(-)( )
35. RTD 5 Level 2
(-) ( ) (-) ( )
(-)( )
36. RTD 6 Level 1
(-) ( ) (-) ( )
(-)( )
37. RTD 6 Level 2
(-) ( ) (-) ( )
(-)( )
38. RTD 7 Level 1
(-) ( ) (-) ( )
(-)( )
39. RTD 7 Level 2
(-) ( ) (-) ( )
(-)( )
40. RTD 8 Level 1
(-) ( ) (-) ( )
(-)( )
41. RTD 8 Level 2
(-) ( ) (-) ( )
(-)( )
42. RTD 9 Level 1
(-) ( ) (-) ( )
(-)( )
43. RTD 9 Level 2
(-) ( ) (-) ( )
(-)( )
44. RTD 10 Level 1
(-) ( ) (-) ( )
(-)( )
45. RTD 10 Level 2
(-) ( ) (-) ( )
(-)( )
46. Under Pwr Level 1
(-) ( ) (-) ( )
(-)( )
47. Under Pwr Level 2
(-) ( ) (-) ( )
(-)( )
48. Low Power Factor
(-) ( ) (-) ( )
(-)( )
49. Analog Input # 1
(-) ( ) (-) ( )
(-)( )
50. Analog Input # 2
(-) ( ) (-) ( )
(-)( )
51. Analog Input # 3
(-) ( ) (-) ( )
(-)( )
52. Analog Input # 4
(-) ( ) (-) ( )
(-)( )

Panel Rst Remot Rst Output A Output B Active During ANSI Code
(+) ( ) (+) ( )
( - ) ( ) ( - ) ( ) Start
48
(+) ( ) (+) ( )
( - ) ( ) ( - ) ( ) Start
66
(+) ( ) (+) ( )
( - ) ( ) ( - ) ( ) Run
37
(+) ( ) (+) ( )
( - ) ( ) ( - ) ( ) Run
37
(+) ( ) (+) ( )
( - ) ( ) ( - ) ( ) Run
51L
(+) ( ) (+) ( )
( - ) ( ) ( - ) ( ) Run
51R
(+) ( ) (+) ( )
( - ) ( ) ( - ) ( ) Always
50
(+) ( ) (+) ( )
( - ) ( ) ( - ) ( ) Always
49/51
(+) ( ) (+) ( )
( - ) ( ) ( - ) ( ) Always
49/51
(+) ( ) (+) ( )
( - ) ( ) ( - ) ( ) Always
46
(+) ( ) (+) ( )
( - ) ( ) ( - ) ( ) Always
46
(+) ( ) (+) ( )
( - ) ( ) ( - ) ( ) Run + Start
27
(+) ( ) (+) ( )
( - ) ( ) ( - ) ( ) Run + Start
59
(+) ( ) (+) ( )
( - ) ( ) ( - ) ( ) Run + Start
59
(+) ( ) (+) ( )
( - ) ( ) ( - ) ( ) Always
47
(+) ( ) (+) ( )
( - ) ( ) ( - ) ( ) Always
47
(+) ( ) (+) ( )
( - ) ( ) ( - ) ( ) Always
50G
(-) ( ) (-) ( )
( - ) ( ) ( - ) ( ) Always
50N
(+) ( ) (+) ( )
( - ) ( ) ( - ) ( ) Always
3
(-) ( ) (-) ( )
( - ) ( ) ( - ) ( ) Always
3
(+) ( ) (+) ( )
( - ) ( ) ( - ) ( ) Beginning of Start 74
(+) ( ) (+) ( )
( - ) ( ) ( - ) ( ) Beginning of Stop 74
(+) ( ) (+) ( )
( - ) ( ) ( - ) ( ) Always
86 or 94
(+) ( ) (+) ( )
( - ) ( ) ( - ) ( ) Always
86 or 94
(+) ( ) (+) ( )
( - ) ( ) ( - ) ( ) Always
86 or 94
(+) ( ) (+) ( )
( - ) ( ) ( - ) ( ) Always
49R
(+) ( ) (+) ( )
( - ) ( ) ( - ) ( ) Always
49R
(+) ( ) (+) ( )
( - ) ( ) ( - ) ( ) Always
49R
(+) ( ) (+) ( )
( - ) ( ) ( - ) ( ) Always
49R
(+) ( ) (+) ( )
( - ) ( ) ( - ) ( ) Always
49R
(+) ( ) (+) ( )
( - ) ( ) ( - ) ( ) Always
49R
(+) ( ) (+) ( )
( - ) ( ) ( - ) ( ) Always
49R
(+) ( ) (+) ( )
( - ) ( ) ( - ) ( ) Always
49R
(+) ( ) (+) ( )
( - ) ( ) ( - ) ( ) Always
49R
(+) ( ) (+) ( )
( - ) ( ) ( - ) ( ) Always
49R
(+) ( ) (+) ( )
( - ) ( ) ( - ) ( ) Always
49R
(+) ( ) (+) ( )
( - ) ( ) ( - ) ( ) Always
49R
(+) ( ) (+) ( )
( - ) ( ) ( - ) ( ) Always
49R
(+) ( ) (+) ( )
( - ) ( ) ( - ) ( ) Always
49R
(+) ( ) (+) ( )
( - ) ( ) ( - ) ( ) Always
49R
(+) ( ) (+) ( )
( - ) ( ) ( - ) ( ) Always
49R
(+) ( ) (+) ( )
( - ) ( ) ( - ) ( ) Always
49R
(+) ( ) (+) ( )
( - ) ( ) ( - ) ( ) Always
49R
(+) ( ) (+) ( )
( - ) ( ) ( - ) ( ) Always
49R
(+) ( ) (+) ( )
( - ) ( ) ( - ) ( ) Always
49R
(+) ( ) (+) ( )
( - ) ( ) ( - ) ( ) Run
32L
(+) ( ) (+) ( )
( - ) ( ) ( - ) ( ) Run
32L
(+) ( ) (+) ( )
( - ) ( ) ( - ) ( ) Run
55
(+) ( ) (+) ( )
( - ) ( ) ( - ) ( ) Always
??
(+) ( ) (+) ( )
( - ) ( ) ( - ) ( ) Always
??
(+) ( ) (+) ( )
( - ) ( ) ( - ) ( ) Always
??
(+) ( ) (+) ( )
( - ) ( ) ( - ) ( ) Always
??

9.9.4.1.
Added Options Available in the MPS3000 Which Correspond to
ANSI Codes
Speed Switch Input (No Rotation detector)
Lock-Out on thermal Trip
RTD Bias for Thermal Overload
Unbalance Bias for Thermal Overload
Low Speed switch of Two-Speed motor
Emergency switch effect on Thermal Overload (reset of thermal capacity when stopped)
Emergency switch effect on Too Many Starts (not recording starts while in emergency)
Fault Simulation (of Voltages, currents, temperature)

14
86
??
??
??
??
??
??

__________________________________________________________________________________

49 • DATA PAGES - MENUS
10. DATA PAGES - MENUS
These menus are accessed by pushing the Data Page button.
10.1. MEASURED DATA
MEASURED
*** DATA ***

Display

Description

Vp1 Vp2 Vp3
277 277 277 V

Phase to Neutral voltages.
Range: 100 V - 12.7 KV.

VL12 VL23 VL31
480 480 480 V

Line to Line Voltages.
Range: 100 V - 25 KV.

I1
I2
137 138

Line (motor) currents.
Range: 1 A - 24 KA.

I3
139 A

GROUND CURRENT
0 Amp.

Ground current.
1 A - 2000A

FREQUENCY
50.0 HZ

Mains frequency.
40Hz – 70Hz

POWER
97.5 KW

Total motor power.
Range: 0 - 30MW.

REACTIVE POWER
60.5 KVAR

Total motor reactive power
Range: 0 - 30 MVAR

POWER FACTOR
0.89

Total (Average of three phases) motor power factor.
Range : 0.0 - 1.00

T1 T2 T3
110 111 109 °C

RTD 1 - 3 Temperature
Range: 0°C - 200°C

T4 T5 T6
110 111 109 °C

RTD 4 - 6 Temperature
Range: 0°C - 200°C

T7
70

T8 T9
68 ??? °C

RTD 7 -9 Temperature
Range: 0°C - 200°C Note: With Thermistors units are (1/10) KΩ
???: Means RTD not connected

°C

RTD 10 Temperature
Range: 0°C - 200°C Note: With Thermistors units are (1/10) KΩ
???: Means RTD not connected

T10
???

ANALOG INPUT # 1
0%

Analog Input 1 in % of full range.
Range: 0% - 100%

ANALOG INPUT # 2
0%

Analog Input 2 in % of full range.
Range: 0% - 100%

ANALOG INPUT # 3
0%

Analog Input 3 in % of full range.
Range: 0% - 100%

ANALOG INPUT # 4
0%

Analog Input 4 in % of full range.
Range: 0% - 100%

__________________________________________________________________________________

50 • DATA PAGES - MENUS
10.2.

CALCULATED DATA

CALCULATED
*** DATA ***

Display

Description

MOTOR LOAD CURR.
90 % OF FLC

Motor current as a percentage of MOTOR FLC.
Range: 0 - 1200% of Motor FLC.

EQUIVALENT CURR.
90 % OF FLC

Equivalent Motor current (increased by unbalance according to
Unbalance K Factor) as a percentage of MOTOR FLC.
Range: 0 - 1200% of Motor FLC.
UNBALANCE CURRENT. The ration between Positive Sequence
current to Negative Sequence current. If Motor Load is less than 100%
then the above ration is multiplied by the factor (Motor Load / 100) to
prevent nuisance tripping
THERMAL CAPACITY used. Simulates motor’s winding temperature
according to the selected Thermal Overload Curve, to Unbalance Bias
and to RTD Bias.
Trip Level = 100%
Expected time to trip at the present current value which is above
Overload Pickup.
Range: No Trip Expected - 18 Hours.
Expected time to start, displayed in one of the following cases:
• After THERMAL TRIP. This is the expected time of the THERMAL
CAPACITY to decay to 50% of the maximum THERMAL
CAPACITY.
• After TOO MANY STARTS Trip. In this case, maximum value of
TIME TO START equals START INHIBIT Time.
Range after THERMAL TRIP:
0 - 166 minutes
Range after TOO MANY STARTS: 1 - 60 minutes

UNBALANCE CURR.
0%

THERMAL CAPACITY
30% OF CAPACITY

TIME TO TRIP-O/L
NO TRIP EXPECTED
TIME TO START
0 SEC.

TIME TO TRIP The expected time until motor trips. (i.e. the time to reach 100% of Thermal
Capacity if the present current value is maintained). This value is calculated and displayed on
the LCD. The host computer may read this value through the serial link, and try to take some
corrective actions.
TIME TO START The expected time until it is possible to re-start after Thermal Trip (i.e. the
time to reach 50% of Thermal Capacity) or after Too Many Starts. This value is calculated
and displayed on the LCD.
Reset of the THERMAL CAPACITY
If Emergency Restart switch is closed, then Thermal Capacity is automatically reset when
motor is stopped, to allow immediate restart of a hot motor.

__________________________________________________________________________________

51 • DATA PAGES - MENUS
10.3.

LOGICAL INPUTS CONTACT STATUS

Logical Inputs
Contact Status

I
t is possible to check the status of any logical input.
Used to check the wiring for system maintenance and debugging.
Note: If the MPS3000 is in PROTECTION ONLY mode only four of the following parameters are
displayed:
Discrete Input A, Discrete Input B, Discrete Input C and Discrete Input D.
Display

Description

MPS3000-C only:
MOTOR STATUS

Available if: * Motor is stopped.
* There is no active trip.
* Stop contact is closed.
* Interlock and Isolator inputs are not locked out.
Note: If MPS3000 is in PROTECTION ONLY mode, then Stop,
Interlock and Isolator inputs have no effect.
Range: AVAILABLE, RUNNING, NOT AVAILABLE

DISCRETE INPUT A
CONTACT OPEN

Programmable digital input.
Range: CONTACT OPEN, CONTACT CLOSED

DISCRETE INPUT B
CONTACT OPEN

Programmable digital input.
Range: CONTACT OPEN, CONTACT CLOSED
Programmable digital input.
Range: CONTACT OPEN, CONTACT CLOSED

DISCRETE INPUT C
CONTACT OPEN
DISCRETE INPUT D
CONTACT OPEN

Programmable digital input.
Range: CONTACT OPEN, CONTACT CLOSED

MPS3000-C ONLY:
EXTRNL INTERLOCK
CLOSE=RUN ENABLE

Interlock input, contact status.
Range: CLOSE = RUN ENABLE, OPEN = LOCKED OUT

ISOLATOR N.O.
CLOSE=RUN ENABLE

N.O. Auxiliary contact of Isolator.
Range: CLOSE = RUN ENABLE, OPEN = LOCKED OUT

ISOLATOR N.C.
OPEN=RUN ENABLE

N.C. Auxiliary contact of Isolator.
Range: OPEN = RUN ENABLE, CLOSE = ISOLATED

START - A INPUT
CONTACT OPEN

Local Start-A input contact status.
Range: CONTACT OPEN, CONTACT CLOSED.

START - B INPUT
CONTACT OPEN

Local Start-B input contact status.
Range: CONTACT OPEN, CONTACT CLOSED.

STOP INPUT
CLOSE=RUN ENABLE

Local Stop input contact status
Range: CLOSE=RUN ENABLE, OPEN = STOP

LOCAL / REMOTE
OPEN = LOCAL

Local / Remote selector switch input contact status.
Range: OPEN = LOCAL, CLOSED = REMOTE

PLC CONTROL
OPEN = PLC

PLC / Serial port selector switch input contact status.
Range : OPEN = PLC, CLOSED = SERIAL PORT

PLC CONTROL - A
OPEN = STOP

PLC contactor - A
Start / Stop input contact status.

__________________________________________________________________________________

52 • DATA PAGES - MENUS
Range: OPEN = STOP, CLOSED = START/RUN
PLC CONTROL - B
OPEN = STOP

PLC contactor - B
Start / Stop input contact status.
Range: OPEN = STOP, CLOSED = START/RUN

PLC RESET
CONTACT OPEN

PLC - reset input contact status.
Range: CONTACT OPEN, CONTACT CLOSED.

SPEED SWITCH
OPEN= HIGH SPEED

Speed switch input contact status.
Range: OPEN = HIGH SPEED, CLOSED = LOW SPEED

AUTHORIZED KEY
OPEN = LOCKED

Authorized Key input contact status.
Range: OPEN = LOCKED, CLOSE = UNLOCKED
External Fault 1 input contact status.
Range: OPEN = NO FAULT, CLOSE = FAULT

EXTERNAL FAULT 1
OPEN = RUN EN.
EXTERNAL FAULT 2
OPEN = RUN EN.
EXTERNAL FAULT 3
OPEN = RUN EN.

External Fault 2 input contact status.
Range: OPEN = NO FAULT, CLOSE = FAULT
External Fault 3 input contact status.
Range: OPEN = NO FAULT, CLOSE = FAULT

__________________________________________________________________________________

53 • DATA PAGES - MENUS
10.4.

STATISTICAL DATA

STATISTICAL DATA
- **** TOTAL RUN TIME
10137.5 HOURS

Total run time since commissioning.
Range: 0-30,000 hours.

TOTAL # OF START
1017

Total number of starts since commissioning.
Range: 0-65535

TOTAL # OF TRIPS
12

Total number of trips since commissioning.
Range: 0-65535

LAST STRT PERIOD
5.2 SEC.

Last start time duration.
Range: 0-255 seconds.

LAST START MAX I
350 AMP.

Peak current (highest of three phases) during last start.
Range: 0-24000 amp.

TOTAL ENERGY
457,235 KWH

Total (since last clearing of statistical data) accumulated motor active
energy.
Range: 0-10,000,000 KWH.

TOTAL REACT. EN.
265,107 KVARH

Total (since last clearing of statistical data) accumulated motor reactive
energy.
Range: 0-10,000,000 KVARH.

MINIMUM VOLTAGE
395 VOLT

Latched (since last reset) minimum value of RMS Line voltage (average
of three phases). Measured while motor is starting or running.
Reset is possible when message is displayed, by pressing Reset Key.

MAXIMUM VOLTAGE
395 VOLT

Latched (since last reset) maximum value of RMS Line voltage
(average of three phases). Measured while motor is starting or running.
Reset is possible when message is displayed, by pressing Reset Key.

MINIMUM CURRENT
73 AMP.

Latched (since last reset) minimum value of RMS Line Currents
(average of three phases), Measure starts 20 seconds after motor is
running.
Reset is possible when message is displayed, by pressing Reset Key.

MAXIMUM CURRENT
73 AMP.

Latched (since last reset) maximum value of RMS Line Currents
(average of three phases), Measure starts 20 seconds after motor is
running.
Reset is possible when message is displayed, by pressing Reset Key.

MIN. FREQUENCY
49.9 HZ

Latched (since last rest) minimum value of mains frequency.
Reset is possible when message is displayed, by pressing Reset Key.

MAX. FREQUENCY
49.9 HZ

Latched (since last rest) maximum value of mains frequency.
Reset is possible when message is displayed, by pressing Reset Key.

__________________________________________________________________________________

54 • DATA PAGES - MENUS
10.5.

FAULT DATA

FAULT DATA
- **** LAST TRIP
RTD 3 LEVEL 2

Last active fault that was Enabled as a Trip.
Range: all 52 faults.

LAST ALARM
LOAD INCREASED

Last active fault that was Enabled as an Alarm.
Range: all 52 faults.

TRIP I1, I2, I3
129 132 130 A

Values of three line (motor) currents before last trip.
Range: 0-24000 amp.

TRIP GND CURRENT
0 AMP.

Values of Ground Fault current before last trip.
Range: 0-24000 amp.

TRIP Vp1, Vp2,Vp3
277 277 277 V

Values of phase to neutral voltages before last trip.
Range: 0-25000 volt.

LAST 10 TRIPS:

Header of next 10 screens showing the details of last 10 trips
with time stamps.

EXTERNAL FAULT 1
08:32 08/05/ 02

Last Trip with its time stamp.

RTD 1 LEVEL 2
13:33 06/13/02

Values of phase to neutral voltages before last trip.
Range: 0-25000 volt.

O/C LEVEL 2 SHORT
11:26 03/21/02

Values of phase to neutral voltages before last trip.
Range: 0-25000 volt.

Next 7 Faults (10 in total) are listed here.

__________________________________________________________________________________

55 • Test / Maintenance Options
11. Test / Maintenance Options
Push Set Page & ▼simultaneously to enter the test & Test & Service page.
TEST/MAINTENANCE
*** OPTIONS ***

The test page is used for running the self-test, displaying program version, storing factory default
parameters into the non volatile memory, resetting and storing statistical data, setting of Real
Time Clock and for Fault Simulation. All this can only be done by a “key holder". Unauthorized
personnel can only view the test screens.
Display

Description

RUN SELF TEST ?
PUSH VALUE-UP

Press ▲ key to initiate the built in test procedure.

BTL-R-16/09/2008
MPS3K-280908-10

Program version description.

STORE NOW ?
DEFAULT SETTINGS

Stores All factory default parameters in the non-volatile memory.
Press Store and Set Page keys simultaneously, to store. DATA SAVED OK
message will be displayed for about two seconds.

CLEAR NOW ?
STATISTICAL DATA

Clears all statistical data. Press Reset and Data Page keys simultaneously,
to reset and store zero values in the non-volatile memory. DATA SAVED OK
message will be displayed for about two seconds. The parameters are:
• TOTAL RUN TIME
• TOTAL # OF STARTS
• TOTAL # OF TRIPS
• LAST START PERIOD
• LAST START MAX I
• THERMAL CAPACITY
• LAST TRIP
• TRIP VOLTAGES AND CURRENTS
• ACTIVE ENERGY (KWH)
• REACTIVE ENERGY (KVARH)
• DATA SAVED OK message will be displayed for about two seconds.

Real Time Clock date and time setting. Set and Store any of the five parameters
hh.mm
(pointed by cursor) normally, as for any other setting parameter. Note that Store
mm.dd.yy
13:51
09/29/02 key forwards cursor to next parameter.
Warning
Default storing and resetting of statistical data should be done with care, since it is not possible to retrieve
the previous "set page" parameters or statistical data.
Setting Default parameters, delete all previous stored settings. !
Clearing Statistical Data resets all previous statistical data values. !
Note: For longer life, the Real Time Clock uses a backup capacitor and not backup battery. The Backup
capacitor retains data and keeps clock running for a few days. If the MPS3000 is not powered for longer
period, the clock has to be initialized. Initialization can be done manually as described above or through
serial link.

SIMUL. VL1, 2, 3
400 VOLT

For Fault Simulation. Set here the required Line to Line voltages (one setting for
the three line to line voltages). No need to press the Store key. Can be changed
before or while simulation is “running”. Default value is automatically set to LINE

__________________________________________________________________________________

56 • Test / Maintenance Options
VOLTS (Vn) setting at system page.
SIMUL. I1, 2, 3
120 AMP

For Fault Simulation. Set here the required Currents. It sets the three currents I1,
I2, I3 to same value. Next two parameters allow changing of I2 and I3 simulation
settings. Can be changed before or while simulation is “running”.
Default value is automatically set to 1.2 times MOTOR FLC setting at system
page.

SIMULATION I2
120 AMP

For Fault Simulation. Use to change value of Simulation I2 Current (so, it will be
different from Simulation I1). Useful for testing of Unbalance and of Unbalance
Bias of Thermal model. Can be changed before or while simulation is “running”.
Default value is automatically set to 1.2 times MOTOR FLC setting at system
page.

SIMULATION I3
120 AMP

For Fault Simulation. Use to change value of Simulation I2 Current (so, it will be
different from Simulation I1). Useful for testing of Unbalance and of Unbalance
Bias of Thermal overload model. Can be changed before or while simulation is
“running”.
Default value is automatically set to 1.2 times MOTOR FLC setting at system
page.

SIMULATION I0
0 AMP

For Ground Fault Simulation. Use to change value of Simulation I0 Current. Can
be changed before or while simulation is “running”. Useful for testing ground fault
protection. Default value is automatically set 0.

SIMUL. T1, 2, 3
40 °C

For RTD High Temperature Fault Simulation. Set here the required Simulation
Motor Windings Temperature. Useful for testing RTD alarms and Trips as well as
RTD Bias for Thermal Overload model. Can be changed before or while simulation
is “running”.
Default value is automatically set 40 °C.

RUN SIMULATION?
OFF

By setting to Start / Run, the previous voltages, currents and Temperature values
are used by the relay as if they were real actual values. Values may be changed
before or during “run time”. Useful for Testing the MPS3000 as well as getting
familiar with the relay features and operation, “on the Engineer Table”.
Operative only during first ten hours since the MPS3000 is powered. After that
time “NOT POSSIBLE NOW” message is displayed.
To Simulate after more than ten hours, turn OFF the Auxiliary power supply, the
turn ON again.
Test Example:
When Protection Only setting at system page is set to Yes.
Setting Run Simulation to Start / Run with the default values, causes the currents
to equal 120% of rated motor current. Therefore the Start LED is turned ON. If
value of current is not changed MAX START TIME may occur after the setting
delay. If current is reduced, Run LED is turned ON and the MPS3000 enters to
running status.
View the Measured data and the Calculated data. Change Simulation I2 or I3 to
cause Unbalance. Change Simulation I0 to check Ground Fault protection.
Change Simulation T1,2,3 to check RTD faults protection. Check Thermal
Capacity value and influence of RTD and Unbalance Bias.

__________________________________________________________________________________

57 • Communication – Serial Link
12. Communication – Serial Link
The MPS3000 is equipped with a powerful data communication system, operating beyond a motor
protection controller into the realm of a complete motor management system.
This communication system is unmatched in its reliability, flexibility and ease of use providing the ideal
basis for the design of a modern motor management system.
The MPS3000 incorporates RS485 serial link and uses a MODBUS RTU protocol (The protocol is not
included in this document) to provides high speed data acquisition to supervisory computers.
Data formats have been carefully structured to provide fast notification of alarms and continuous
updates of performance parameters. Load control can be performed from host computers or by PLCs.
The following information and control can be accessed through the communication.
•
•
•
•

All Actual data values
All MPS3000 Parameter Settings (Read & Write)
All the control commands for the MPS3000-C (such as Start A, Start B, Stop)
Reset

See MPS3000 Communication instruction manual.
The MPS3000 system is user expandable. No special engineering skills or tools are required.
For small systems, the Host computer can communicate directly with the MPS3000 via a twisted
shielded pair.
For larger systems a Data Highway enables multiple MPS3000 connection. Up to 32 MPS3000s can
be added on each twisted pair of the Host serial link with full access to all MPS3000's.
The system also performs high speed data acquisition Users therefore have a simple and friendly
means of building a fully integrated monitoring and control systems.
System reliability is exceptionally high, meeting the highest standards of reliable communication in the
industry. Included in each message is a 16 bit CRC.
Note: Protocols other than MODBUS RTU available upon consultation.
Note: Terminate serial link cable with 120 Ohm resistors at both ends.

__________________________________________________________________________________

58 • Technical Specifications
13. Technical Specifications
Auxiliary Power Supply
AC /DC Power Supply:
Standard voltage version: 85 - 250 V (for 110V or 220V AC or DC)
Low voltage version: 19 - 60 V (for 24V or 48V AC or DC)
Frequency: DC, 45 to 65 Hz.
Power consumption: Less than 20 VA
Phase Current Inputs (three current)
Method :
True RMS, sample time 0.5 ms.
Range:
0.05 to 12 * phase C/T Primary amps setting.
Full scale:
12 * phase C/T Primary amps setting.
Accuracy:
± 1.5% , for 0.9 to 1.5 * C/T Primary amps setting.
± 5% above 1.5 * C/T Primary
± (3% + 0.02 * C/T Primary) below 0.9 * C/T Primary
Power consumption:
≤ 0.1 VA per 1 A at 1 A. input, (Input impedance ≤ 100 mΩ)
≤ 1.0 VA per 5 A at 5 A. input, (Input impedance ≤ 20 mΩ)
Ground Fault Current Inputs (one current)
Method :
True RMS, sample time 0.5 ms.
Range:
0.05 to 1.0 * G/F C/T Primary amps setting.
Full scale:
1.0 * G/F C/T Primary amps setting.
Accuracy:
± 3% of full scale.
Power consumption: ≤ 0.1 VA per 1 A at 1 A. input, (Input impedance ≤ 100 mΩ)
≤ 0.5 VA per 5 A at 5 A. input, (Input impedance ≤ 20 mΩ)
Line Voltage Inputs (three voltages, with or without neutral)
Method :
True RMS, sample 0.5 ms.
Power consumption: ≤ 0.2 VA
Without VT transformer:
Range:
50 - 750 volts.
Full scale:
750 volts.
Accuracy:
± 1.0% of full scale.
With VT transformer:
Range:
50 - 750 volts * (VT Primary / VT Secondary), limited to 25 KV.
Full scale:
750 volts * (VT Primary / VT Secondary), limited to 25 KV.
Accuracy:
± 1.0% of full scale.
Temperature Inputs (Ten RTDs - three wires or Six RTDs plus Four Thermistors)
Time delay:
2 Sec.
Range:
Copper 10, PT100, Ni120: 0°C - 200°C
PTC or NTC thermistor Model: 0 – 25.0 KΩ
Accuracy:
± 3% of resistance.
Max wire resistance: 25% of Sensor resistance at 10°C
Analog Inputs and Outputs:
Range:
0 – 1mA or 0-20mA (different types). 0-20mA type can be set to 0-20mA or 4-20mA.
Accuracy:
2% of Full Scale + 3% of input.
Overload Alarm and Trip Curves (both heating and cooling)
Fault time accuracy:
± 1 second up to 10 seconds.
± 1 second +/- 2% above 10 seconds.
Threshold current level: Overload Pickup ± 1.5%.
RTD Bias, Unbalance Bias.
Total Run Time
Accuracy:
±2%.
Current Unbalance Alarm and Trip
Method:
Unbalance = 100 * (Negative Sequence Current / Positive Sequence Current) [%]
__________________________________________________________________________________

59 • Technical Specifications
If Motor Load < 100% then multiply by * (Motor Load / 100)
This is to prevent nuisance tripping at low current levels.
Level 1
Threshold Unbalance Level 1: 50% of Unbal Current setting ± 2%.
Alarm (fixed) time delay: 1.0 ± 0.5 Sec.
Level 2 Curves
Threshold Unbalance Level 2: Unbal Current setting ± 2%.
Trip time accuracy: ± 1 second up to 10 seconds.
± 1 second +/- 2% above 10 seconds.
Fault Time Delays
Accuracy:
±0.5 Sec. or ±2% of time, which ever is greater, for all but the above mentioned
faults and the following exceptions:
* Overcurrent Level 2: When adjusted to 0 >>> 60 ms +/- 20 ms. -0.1/+0.2 Sec. up
to 1 Sec.
* Ground fault trip: -0.1/+0.2 Sec. for less than 1 Sec. delay.
Relays Contacts
Rated load:
8A/250 VAC 1800VA.
Maximum voltage: 250VAC.
Dielectric Strength
1500 VAC, for 1 minute, Between Ground (terminal 63) and:
* Current inputs.
* Auxiliary power supply inputs
* Voltage inputs.
* Control terminals
Power and Reactive Power Measurements
Method:
True RMS over three phase voltages and currents.
Range :
0.1 KW - 30MW (0.1 KVAR - 30 MVAR)
Full Scale :
30MW (30 MVAR)
Resolution :
0.1 KW below 1 MW, 0.01 MW above 1 MW.
Accuracy :
For V ≥ 90 * VT Primary / VT Secondary & Power factor ≥ 0.5, with three phase
voltages.
Two Ranges :
1. For (10% < I ≤ 150%) of C/T primary, accuracy is :
± (2% + 0.01 * C/T Primary/ Motor FLC.) of motor rated Power
2. For ( I ≥ 150%) of C/T primary, accuracy is :
± 7% of the display reading
Power Factor
Method:
Ratio between total power (P) to total apparent power (VA).
Range :
0.0 - 1.0 leading / lagging.
Resolution :
0.001
Accuracy :
For V ≥ 90 * VT Primary / VT Secondary & I ≥ 50% of C/T Primary & Power factor ≥
0.7 it is ± 0.03
Ambient Temperature 0°C to +50°C

__________________________________________________________________________________

60 • Case and Cutout Details
14. Case and Cutout Details

__________________________________________________________________________________

61 • Appendix A - Changes From MPC 2000 to MPS 3000
15. Appendix A - Changes From MPC 2000 to MPS 3000
1. Four programmable discrete (digital) inputs to the MPS3000 (one, before – for Key only).
2. Four programmable Analog outputs
3. Four Programmable Analog Inputs with four new trips (protections)
4. Real time clock.
5. Statistical Data of last 10 trips with time & date stamp.
6. Larger Display.
7. Switch Mode power supply for AC or DC (one unit from 85V to 230V)
8. Baud Rate (MODBUS) up to 19200 bps.
9. MPS3000 includes 10 Temperature sensors. Two models: one (Standard) model with
10 RTD (as before), second (optional) model with 6 RTD and 4 thermistors. Must be
ordered from factory. Field modifications are not possible.
10. Control function (for MPS3000-C) with MODBUS function 6 and 16. Functions 1,2,5,15
are canceled.
11. MODBUS new group of 20 user selected actual data parameters for fast scanning.
12. Unbalance calculation using Negative and Positive Sequence instead Imax and Imin.
13. UNBALANCE MIN T (unbalance minimum time = 1..30 sec.) new parameter to prevent
too fast response.
14. Standard “American” Thermal Overload curves
15. RTD Bias (of thermal overload)
16. Unbalance Bias (Of Thermal Overload)
17. New program for current, voltage and temperature fault simulation. (useful for testing
and for learning the MPS3000, "on the engineer table")
18. Power measurement even if single phase voltage is connected (V1n,V2n,V3n = V12)
19. KWH (Energy) Display and KWH output (pulse relay)
20. Programmable Output Relays.
21. Too Many Starts Pre Alarm can be configured to energize output relay.
22. (I > 0) After Trip can be configured to energize output relay B (to trip upstream breaker).
23. Every fault group can be configured to energize output relays A & B (similar to MPR6).
24. NO START PROCESS new setting of STARTING METHOD, to allow switching to run, if
I>= 10%.
25. Capture and display of minimum and maximum RMS average (of three phases) voltage
and current. Capture of minimum and maximum frequency.
26. G/F During Start setting, new feature to eliminate nuisance ground fault tripping when
residual CT connection (not required with Core Balance) is used.
27. New Emergency Restart function. Reset of Thermal capacity by pressing reset twice is
canceled.
28. Modified Restart- after mains failure or Auxiliary Power Supply failure.
29. Separate Aux Power Supply and Control Voltage (option –S).
30. KVARH, added.
31. New setting parameter UV ACTIVE AT STOP, to enable/disable Under Voltage
protection at stop.

__________________________________________________________________________________

62 • Appendix B – Parameters List and Factory Default Settings
16. Appendix B – Parameters List and Factory Default Settings
Page Name

Name

DEFAULT VALUE

SYSTEM

LINE VOLTS (Vn)

SYSTEM

LINE FREQUENCY

60Hz

SYSTEM

VT PRIMARY

VT NOT CONNECTED

SYSTEM

VT SECONDARY

VT NOT CONNECTED

SYSTEM

MOTOR FLC

100 AMP.

SYSTEM

CT PRIMARY

100 AMP.

Set Value

480V

SYSTEM

GND CT PRIMARY

100 AMP.

SYSTEM

GND FAULT LVL 1

5% OF FLC

SYSTEM

G/F LVL 1 DELAY

10 SEC.

SYSTEM

GND FAULT LVL 2

10% OF FLC

SYSTEM

G/F LVL 2 DELAY

0.5 SEC.

SYSTEM

G/F DURING START

100% OF FLC

SYSTEM

CURRENT INHIBIT

OFF

SYSTEM

STARTING METHOD

DIRECT ON LINE

SYSTEM

MAX. TIME IN STAR

10 SEC.

SYSTEM

TRANSITION TIME

200 mSEC

SYSTEM

STAR TO DELTA AT

150 % OF FLC

SYSTEM

CONFIG. OUTPUT A

TRIPPING / ALARM

SYSTEM

OUTPUT A DELAY

0 SEC.

SYSTEM

CONFIG. OUTPUT B

TRIPPING / ALARM

SYSTEM

OUTPUT B DELAY

0 SEC.

SYSTEM

CONFIG. OUTPUT C

ALARM FAIL SAFE

SYSTEM

OUTPUT C DELAY

0 SEC.

SYSTEM

CONFIG. OUTPUT D

TRIP

SYSTEM

OUTPUT D DELAY

0 SEC.

SYSTEM

CONFIG INPUT A

AUTHORIZED KEY

SYSTEM

CONFIG INPUT B

EXT FAULT 1

SYSTEM

CONFIG INPUT C

EXT FAULT 2

SYSTEM

CONFIG INPUT D

REMOTE RESET

SYSTEM

PROTECTION ONLY

YES

SYSTEM

PARAM. SETTINGS

LOCKED

VOLTAGE

U/V LEVEL

80% OF Vn

VOLTAGE

U/V DELAY

5.0 SEC.

VOLTAGE

U/V ACTIVE AT STOP

DISABLE

VOLTAGE

U/V STRT PREVENT

OFF

VOLTAGE

U/V AUTO RESTART

BOTH SUP. & Vin

VOLTAGE

RESTART DELAY

4.0 SEC.

VOLTAGE

O/V LEVEL 1

115% OF Vn

VOLTAGE

O/V LEVEL 2

120% OF Vn

VOLTAGE

O/V LVL 2 DELAY

1 SEC.

CURRENT

MAX. START TIME

10 SEC.

CURRENT

NUMBER OF STARTS

10 SEC.

CURRENT

STARTS PERIOD

30 MIN.

CURRENT

START INHIBIT

15 MIN.

CURRENT

U/C LEVEL 1

50% OF FLC

CURRENT

U/C LVL 1 DELAY

2 SEC.

CURRENT

U/C LEVEL 2

40% OF FLC

CURRENT

U/C LVL 2 DELAY

5 SEC.

CURRENT

LOAD INCREASE

120% OF FLC

CURRENT

O/C LEVEL 1- JAM

400% OF FLC

CURRENT

O/C LVL 1 DELAY

2.0 SEC.

CURRENT

O/C LVL 2 - SHORT

800% OF FLC

CURRENT

O/C LVL 2 DELAY

0.5 SEC.

CURRENT

UNBALANCE LVL 2

15% OF FLC

CURRENT

U/B LVL 2 MIN T

5 SEC.

__________________________________________________________________________________

63 • Appendix B – Parameters List and Factory Default Settings
Page Name

Name

DEFAULT VALUE

CURRENT

U/B LVL 2 MAX T

30 SEC.

OVERLOAD

CURVE MULTIPLIER

6

OVERLOAD

OVERLOAD PICKUP

105% OF FLC

OVERLOAD

HOT/COLD RATIO

50%

OVERLOAD

RUN COOL T CONST

10 MIN.

OVERLOAD

STOP COOL T CONST

30 MIN.

OVERLOAD

UNBALANCE K FACTOR

5

OVERLOAD

RTD BIAS

OFF

OVERLOAD

RTD BIAS MIN

40 °C

OVERLOAD

RTD BIAS MID

130 °C

OVERLOAD

RTD BIAS MAX

155 °C

OVERLOAD

THERMAL LEVEL 1

80% OF CAPACITY

OVERLOAD

STALL TIME FACTOR

50%

POWER

RATED PF AT FLC

0.88 LAG

POWER

UNDER PWR LVL 1

45%

POWER

U/P LVL 1 DELAY

30 SEC.

POWER

UNDER PWR LVL 2

25%

POWER

U/P LVL 2 DELAY

30 SEC.

POWER

LOW POWER FACTOR

0.8 LAG

POWER

LOW PF DELAY

30 SEC.

POWER

KWH PER PULSE

OFF

TEMPERATURE

RTD TYPE

PLATINUM 100 OHM

TEMPERATURE

T 7..10 TYPE

RTD

TEMPERATURE

T 1 LEVEL 1

120 °C

TEMPERATURE

T 1 LEVEL 2

140 °C

TEMPERATURE

T 2 LEVEL 1

120 °C

TEMPERATURE

T 2 LEVEL 2

140 °C

TEMPERATURE

T 3 LEVEL 1

120 °C

TEMPERATURE

T 3 LEVEL 2

140 °C

TEMPERATURE

T 4 LEVEL 1

120 °C

TEMPERATURE

T 4 LEVEL 2

140 °C

TEMPERATURE

T 5 LEVEL 1

120 °C

TEMPERATURE

T 5 LEVEL 2

140 °C

TEMPERATURE

T 6 LEVEL 1

120 °C

TEMPERATURE

T 6 LEVEL 2

140 °C

TEMPERATURE

T7 LEVEL 1

80 °C

TEMPERATURE

T7 LEVEL 2

100 °C

TEMPERATURE

T8 LEVEL 1

80 °C

TEMPERATURE

T8 LEVEL 2

100 °C

TEMPERATURE

T9 LEVEL 1

80 °C

TEMPERATURE

T9 LEVEL 2

100 °C

TEMPERATURE

T10 LEVEL 1

80 °C

TEMPERATURE

T10 LEVEL 2

100 °C

ANALOG I/O

ANALOG OUT TYPE

4..20MA

ANALOG I/O

ANALOG OUT 1 PARAM

AVERAGE CURRENT

ANALOG I/O

ANALOG OUT 1 MIN

0% OF FLC

ANALOG I/O

ANALOG OUT 1 MAX

200% OF FLC

ANALOG I/O

ANALOG OUT 2 PARAM

AVG. LINE VOLTS

ANALOG I/O

ANALOG OUT 2 MIN

0% OF Vn

ANALOG I/O

ANALOG OUT 2 MAX

200% OF Vn

ANALOG I/O

ANALOG OUT 3 PARAM

THERMAL CAPACITY

ANALOG I/O

ANALOG OUT 3 MIN

0% OF CAPACITY

ANALOG I/O

ANALOG OUT 3 MAX

200% OF CAPACITY

ANALOG I/O

ANALOG OUT 4 PARAM

MAX OF T1..T3

ANALOG I/O

ANALOG OUT 4 MIN

0 °C

ANALOG I/O

ANALOG OUT 4 MAX

200 °C

Set Value

__________________________________________________________________________________

64 • Appendix B – Parameters List and Factory Default Settings
Page Name

Name

DEFAULT VALUE

ANALOG I/O

ANALOG IN 1 TYPE

4..20MA

ANALOG I/O

ANALOG IN 1 LEVEL

ABOVE 50%

ANALOG I/O

ANALOG IN 1 DELAY

10 SEC.

ANALOG I/O

ANALOG IN 2 TYPE

4..20MA

ANALOG I/O

ANALOG IN 2 LEVEL

ABOVE 50%

ANALOG I/O

ANALOG IN 2 DELAY

10 SEC.

ANALOG I/O

ANALOG IN 3 TYPE

4..20MA

ANALOG I/O

ANALOG IN 3 LEVEL

ABOVE 50%

ANALOG I/O

ANALOG IN 3 DELAY

10 SEC.

ANALOG I/O

ANALOG IN 4 TYPE

4..20MA

ANALOG I/O

ANALOG IN 4 LEVEL

ABOVE 50%

ANALOG I/O

ANALOG IN 4 DELAY

10 SEC.

Set Value

TRIP/ALARM

MAX START TIME

TRIP: N, ALARM: Y, AUTORESET: N, PANELRESET: Y, REMOT RST: Y, OUTPUTA: N, OUTPUTB: N

TRIP/ALARM

TOO MANY STARTS

TRIP: N, ALARM: N, AUTORESET: N, PANELRESET: Y, REMOT RST: Y, OUTPUTA: N, OUTPUTB: N

TRIP/ALARM

U/C LEVEL 1

TRIP: N, ALARM: Y, AUTORESET: N, PANELRESET: Y, REMOT RST: Y, OUTPUTA: N, OUTPUTB: N

TRIP/ALARM

U/C LEVEL 2

TRIP: N, ALARM: N, AUTORESET: N, PANELRESET: Y, REMOT RST: Y, OUTPUTA: N, OUTPUTB: N

TRIP/ALARM

LOAD INCREASED

TRIP: N, ALARM: Y, AUTORESET: N, PANELRESET: Y, REMOT RST: Y, OUTPUTA: N, OUTPUTB: N

TRIP/ALARM

O/C LEVEL 1 - JAM

TRIP: Y, ALARM: Y, AUTORESET: N, PANELRESET: Y, REMOT RST: Y, OUTPUTA: N, OUTPUTB: N

TRIP/ALARM

O/C LVL 2 - SHORT

TRIP: Y, ALARM: Y, AUTORESET: N, PANELRESET: Y, REMOT RST: Y, OUTPUTA: N, OUTPUTB: N

TRIP/ALARM

THERMAL LEVEL 1

TRIP: N, ALARM: Y, AUTORESET: N, PANELRESET: Y, REMOT RST: Y, OUTPUTA: N, OUTPUTB: N

TRIP/ALARM

THERMAL LEVEL 2

TRIP: Y, ALARM: Y, AUTORESET: N, PANELRESET: Y, REMOT RST: Y, OUTPUTA: N, OUTPUTB: N

TRIP/ALARM

UNBALANCE LVL 1

TRIP: N, ALARM: Y, AUTORESET: N, PANELRESET: Y, REMOT RST: Y, OUTPUTA: N, OUTPUTB: N

TRIP/ALARM

UNBALANCE LVL 2

TRIP: Y, ALARM: Y, AUTORESET: N, PANELRESET: Y, REMOT RST: Y, OUTPUTA: N, OUTPUTB: N

TRIP/ALARM

UNDERVOLTAGE

TRIP: N, ALARM: Y, AUTORESET: N, PANELRESET: Y, REMOT RST: Y, OUTPUTA: N, OUTPUTB: N

TRIP/ALARM

O/V LEVEL 1

TRIP: N, ALARM: Y, AUTORESET: N, PANELRESET: Y, REMOT RST: Y, OUTPUTA: N, OUTPUTB: N

TRIP/ALARM

O/V LEVEL 2

TRIP: Y, ALARM: Y, AUTORESET: N, PANELRESET: Y, REMOT RST: Y, OUTPUTA: N, OUTPUTB: N

TRIP/ALARM

PHASE LOSS

TRIP: Y, ALARM: Y, AUTORESET: N, PANELRESET: Y, REMOT RST: Y, OUTPUTA: N, OUTPUTB: N

TRIP/ALARM

PHASE SEQUENCE

TRIP: Y, ALARM: Y, AUTORESET: Y, PANELRESET: Y, REMOT RST: Y, OUTPUTA: N, OUTPUTB: N

TRIP/ALARM

GND FAULT LVL 1

TRIP: N, ALARM: Y, AUTORESET: N, PANELRESET: Y, REMOT RST: Y, OUTPUTA: N, OUTPUTB: N

TRIP/ALARM

GND FAULT LVL 2

TRIP: Y, ALARM: Y, AUTORESET: N, PANELRESET: N, REMOT RST: N, OUTPUTA: N, OUTPUTB: N

TRIP/ALARM

COMM PORT FAILED

TRIP: N, ALARM: N, AUTORESET: Y, PANELRESET: Y, REMOT RST: Y, OUTPUTA: N, OUTPUTB: N

TRIP/ALARM

INTERNAL FAILURE

TRIP: N, ALARM: Y, AUTORESET: N, PANELRESET: N, REMOT RST: N, OUTPUTA: N, OUTPUTB: N

TRIP/ALARM

CONTROL CIR. OPEN

TRIP: N, ALARM: N, AUTORESET: N, PANELRESET: Y, REMOT RST: Y, OUTPUTA: N, OUTPUTB: N

TRIP/ALARM

WELDED CONTACTOR

TRIP: N, ALARM: N, AUTORESET: N, PANELRESET: Y, REMOT RST: Y, OUTPUTA: N, OUTPUTB: N

TRIP/ALARM

EXTERNAL FAULT 1

TRIP: N, ALARM: N, AUTORESET: N, PANELRESET: Y, REMOT RST: Y, OUTPUTA: N, OUTPUTB: N

TRIP/ALARM

EXTERNAL FAULT 2

TRIP: N, ALARM: N, AUTORESET: N, PANELRESET: Y, REMOT RST: Y, OUTPUTA: N, OUTPUTB: N

TRIP/ALARM

EXTERNAL FAULT 3

TRIP: N, ALARM: N, AUTORESET: N, PANELRESET: Y, REMOT RST: Y, OUTPUTA: N, OUTPUTB: N

TRIP/ALARM

RTD 1 LEVEL 1

TRIP: N, ALARM: N, AUTORESET: N, PANELRESET: Y, REMOT RST: Y, OUTPUTA: N, OUTPUTB: N

TRIP/ALARM

RTD 1 LEVEL 2

TRIP: N, ALARM: N, AUTORESET: N, PANELRESET: Y, REMOT RST: Y, OUTPUTA: N, OUTPUTB: N

TRIP/ALARM

RTD 2 LEVEL 1

TRIP: N, ALARM: N, AUTORESET: N, PANELRESET: Y, REMOT RST: Y, OUTPUTA: N, OUTPUTB: N

TRIP/ALARM

RTD 2 LEVEL 2

TRIP: N, ALARM: N, AUTORESET: N, PANELRESET: Y, REMOT RST: Y, OUTPUTA: N, OUTPUTB: N

TRIP/ALARM

RTD 3 LEVEL 1

TRIP: N, ALARM: N, AUTORESET: N, PANELRESET: Y, REMOT RST: Y, OUTPUTA: N, OUTPUTB: N

TRIP/ALARM

RTD 3 LEVEL 2

TRIP: N, ALARM: N, AUTORESET: N, PANELRESET: Y, REMOT RST: Y, OUTPUTA: N, OUTPUTB: N

TRIP/ALARM

RTD 4 LEVEL 1

TRIP: N, ALARM: N, AUTORESET: N, PANELRESET: Y, REMOT RST: Y, OUTPUTA: N, OUTPUTB: N

TRIP/ALARM

RTD 4 LEVEL 2

TRIP: N, ALARM: N, AUTORESET: N, PANELRESET: Y, REMOT RST: Y, OUTPUTA: N, OUTPUTB: N

TRIP/ALARM

RTD 5 LEVEL 1

TRIP: N, ALARM: N, AUTORESET: N, PANELRESET: Y, REMOT RST: Y, OUTPUTA: N, OUTPUTB: N

TRIP/ALARM

RTD 5 LEVEL 2

TRIP: N, ALARM: N, AUTORESET: N, PANELRESET: Y, REMOT RST: Y, OUTPUTA: N, OUTPUTB: N

TRIP/ALARM

RTD 6 LEVEL 1

TRIP: N, ALARM: N, AUTORESET: N, PANELRESET: Y, REMOT RST: Y, OUTPUTA: N, OUTPUTB: N

TRIP/ALARM

RTD 6 LEVEL 2

TRIP: N, ALARM: N, AUTORESET: N, PANELRESET: Y, REMOT RST: Y, OUTPUTA: N, OUTPUTB: N

TRIP/ALARM

RTD 7 LEVEL 1

TRIP: N, ALARM: N, AUTORESET: N, PANELRESET: Y, REMOT RST: Y, OUTPUTA: N, OUTPUTB: N

TRIP/ALARM

RTD 7 LEVEL 2

TRIP: N, ALARM: N, AUTORESET: N, PANELRESET: Y, REMOT RST: Y, OUTPUTA: N, OUTPUTB: N

TRIP/ALARM

RTD 8 LEVEL 1

TRIP: N, ALARM: N, AUTORESET: N, PANELRESET: Y, REMOT RST: Y, OUTPUTA: N, OUTPUTB: N

TRIP/ALARM

RTD 8 LEVEL 2

TRIP: N, ALARM: N, AUTORESET: N, PANELRESET: Y, REMOT RST: Y, OUTPUTA: N, OUTPUTB: N

TRIP/ALARM

RTD 9 LEVEL 1

TRIP: N, ALARM: N, AUTORESET: N, PANELRESET: Y, REMOT RST: Y, OUTPUTA: N, OUTPUTB: N

TRIP/ALARM

RTD 9 LEVEL 2

TRIP: N, ALARM: N, AUTORESET: N, PANELRESET: Y, REMOT RST: Y, OUTPUTA: N, OUTPUTB: N

TRIP/ALARM

RTD 10 LEVEL 1

TRIP: N, ALARM: N, AUTORESET: N, PANELRESET: Y, REMOT RST: Y, OUTPUTA: N, OUTPUTB: N

__________________________________________________________________________________

65 • Appendix B – Parameters List and Factory Default Settings
Page Name

Name

DEFAULT VALUE

Set Value

TRIP/ALARM

RTD 10 LEVEL 2

TRIP: N, ALARM: N, AUTORESET: N, PANELRESET: Y, REMOT RST: Y, OUTPUTA: N, OUTPUTB: N

TRIP/ALARM

UNDER PWR LVL 1

TRIP: N, ALARM: N, AUTORESET: N, PANELRESET: Y, REMOT RST: Y, OUTPUTA: N, OUTPUTB: N

TRIP/ALARM

UNDER PWR LVL 2

TRIP: N, ALARM: N, AUTORESET: N, PANELRESET: Y, REMOT RST: Y, OUTPUTA: N, OUTPUTB: N

TRIP/ALARM

LOW POWER FACTOR

TRIP: N, ALARM: N, AUTORESET: N, PANELRESET: Y, REMOT RST: Y, OUTPUTA: N, OUTPUTB: N

TRIP/ALARM

ANALOG IN 1

TRIP: N, ALARM: N, AUTORESET: N, PANELRESET: Y, REMOT RST: Y, OUTPUTA: N, OUTPUTB: N

TRIP/ALARM

ANALOG IN 2

TRIP: N, ALARM: N, AUTORESET: N, PANELRESET: Y, REMOT RST: Y, OUTPUTA: N, OUTPUTB: N

TRIP/ALARM

ANALOG IN 3

TRIP: N, ALARM: N, AUTORESET: N, PANELRESET: Y, REMOT RST: Y, OUTPUTA: N, OUTPUTB: N

TRIP/ALARM

ANALOG IN 4

TRIP: N, ALARM: N, AUTORESET: N, PANELRESET: Y, REMOT RST: Y, OUTPUTA: N, OUTPUTB: N

COMMUNICATION

BAUD RATE

19200

COMMUNICATION

ADDRESS NUMBER

OFF

COMMUNICATION

S. LINK PAR. SAVE

DISABLE

COMMUNICATION

FRONT COM ADDRESS

OFF

STATISTICAL DATA

TOTOL RUN TIME

STATISTICAL DATA

TOTAL # OF START

STATISTICAL DATA

TOTAL # OF TRIPS

STATISTICAL DATA

LAST STRT PERIOD

STATISTICAL DATA

LAST STRT MAX I

STATISTICAL DATA

TOTAL ENERGY

STATISTICAL DATA

TOTAL REACT. EN.

STATISTICAL DATA

MINIMUM VOLTAGE

STATISTICAL DATA

MAXIMUM VOLTAGE

STATISTICAL DATA

MINIMUM CURRENT

STATISTICAL DATA

MAXIMUM CURRENT

STATISTICAL DATA

MIN. FREQUENCY

STATISTICAL DATA

MAX. FREQUENCY

FAULT DATA

LAST TRIP

FAULT DATA

LAST ALARM

FAULT DATA

TRIP I1, I2, I3

FAULT DATA

TRIP GND CURRENT

FAULT DATA

TRIP Vp1, Vp2, Vp3

FAULT DATA
FAULT DATA

LAST TRIP -1
LAST TRIP -2

FAULT DATA

LAST TRIP -3

FAULT DATA

LAST TRIP -4

FAULT DATA

LAST TRIP -5

FAULT DATA

LAST TRIP -6

FAULT DATA

LAST TRIP -7

FAULT DATA

LAST TRIP -8

FAULT DATA

LAST TRIP -9

FAULT DATA

LAST TRIP -10

__________________________________________________________________________________

66 • Appendix C – Ordering Information
17. Appendix C – Ordering Information
MPS-3000

PRelay
Type

VConstruction

1PThermal
Sensor

2Supply/
Control
Voltage

0Required
Options

MComm.

S
Front
Panel

Relay Type
Specify
P
C

Description
Motor Protection Relay
Motor protection Controller

Specify
V
H

Description
Vertical
Horizontal

Specify
1P
1C
TP
TC

Thermal Sensor
Description
Ten RTD Platinum 100 ohm/Nickel 120 ohm
Ten RTD Copper 10 ohm
Four Thermistors + six RTD (Pt100)
Four Thermistors + six RTD (Copper)

Specify
2
2S
3

Supply/Control Voltage
Description
110-230V 50/60Hz or DC (+10% / -15%)
110 - 230 Vac/dc with separate AUX. Power Supply and Control Voltage
19 - 60 Vdc

Construction

Required Options
Specify
0
2
Z
Specify
M
P

Description
No Option
Trip on disconnected RTD
Bazan
Communication
Description
RS485 with MODBUS protocol
Rear Profibus connection and front RS232 with MODBUS protocol at fixed baud rate of
9600bps
(Option “P” available only in vertical construction. For option “P” in horizontal
construction – Consult factory)

Front Panel
Specify
Description
S
Standard
N
Consult factory
I
Consult factory
T
Consult factory
Additional request: Provide RS232 null modem cable for front Modbus communication- cat. No.
HARN529079.

Solcon Industries Ltd.
www.solcon.com Technical support: office@solcon.com
__________________________________________________________________________________



Source Exif Data:
File Type                       : PDF
File Type Extension             : pdf
MIME Type                       : application/pdf
PDF Version                     : 1.4
Linearized                      : Yes
XMP Toolkit                     : Adobe XMP Core 4.0-c316 44.253921, Sun Oct 01 2006 17:14:39
Creator Tool                    : Acrobat PDFMaker 8.1 for Word
Modify Date                     : 2009:08:06 10:43:35+03:00
Create Date                     : 2009:08:06 10:43:23+03:00
Metadata Date                   : 2009:08:06 10:43:35+03:00
Producer                        : Acrobat Distiller 8.1.0 (Windows)
Format                          : application/pdf
Creator                         : Yoram,Linus
Title                           :  MPS3000+ User Guide
Document ID                     : uuid:15734ed6-e8fa-43ad-910f-32c4454223b4
Instance ID                     : uuid:956dcd60-d6c9-4dc7-bbcd-adfbe0890eec
Company                         : Solcon Industries Ltd
Part                            : 1
Conformance                     : B
Page Count                      : 66
Page Layout                     : OneColumn
Author                          : Yoram,Linus
Release                         : MPS3k-200105-Mb
Date                            : January, 26 2005
EXIF Metadata provided by EXIF.tools

Navigation menu