Eastron SDM630 Energy Meter_manual 20161221 Meter Manual

User Manual: Energy-Meter_manual-20161221

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SDM630-MODBUS
Din Rail Smart Energy Meter for Single and Three Phase Electrical Systems

USER MANUAL
2016 V2.0

Important Safety Information is contained in the Maintenance section. Familiarize yourself with
this information before attempting installation or other procedures.
Symbols used in this document:
Risk of Danger: These instructions contain important safety information:
Read them before starting installation or servicing of the equipment

Caution: Risk of Electric Shock

1 Introduction
The SDM630-Modbus measures and displays the characteristics of single phase two wires (1p2w),
three phase three wires (3p3w,) and three phase four wires(3p4w) supplies, including voltage,
frequency, current, power ,active and reactive energy, imported or exported. Energy is measured
in terms of kWh, kVArh. Maximum demand current can be measured over preset periods of up to
60 minutes. In order to measure energy, the unit requires voltage and current inputs in addition
to the supply required to power the product.
SDM630-Modbus supports max. 100A direct connection, saves the cost and avoid the trouble to
connect external CTs, giving the unit a cost-effective and easy operation. Built-in interfaces
provides pulse and RS485 Modbus RTU outputs. Configuration is password protected.
1.1 Unit Characteristics
The Unit can measure and display:
 Line voltage and THD% (total harmonic distortion) of all phases
 Line Frequency
 Currents, Current demands and current THD% of all phases
 Power, maximum power demand and power factor
 Active energy imported and exported
 Reactive energy imported and exported
The unit has password-protected set-up screens for:
 Changing password
 Supply system selection 1p2w, 3p3w,3p4w
 Demand Interval Time(DIT)
 Reset for demand measurements
 Pulse output duration
Two pulse output indicates real-time energy measurement. An RS485 output allows remote
monitoring from another display or a computer.
1.2 RS485 Serial – Modbus RTU
This uses an RS485 serial port with Modbus RTU protocol to provide a means of remotely
monitoring and controlling the Unit
Set-up screens are provided for setting up the RS485 port.
1.3 Pulse output
This provides two pulse outputs that clock up measured active and reactive energy. The constant
of pulse output 2 for active energy is 400imp/kWh (unconfigurable), its width is fixed at 100ms.
The default constant of configurable pulse output 1 is 400imp/kWh, default pulse width is
100ms.The configurable pulse output 1 can be set from the set-up menu.

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2. Start-up Screens
3. 1

The first screen lights up all display
segments and can be used as a display
check

2

The second screen indicates the
firmware installed in the unit and its
build number.

3

The interface performs a self-test and
indicates the result if the test passes.

After a short delay, the screen will display active energy measurements.

3. Measurements
The buttons operate as follows:
1

Selects the Voltage and Current display screens
In Set-up Mode, this is the “Left” or “Back” button.

2

Select the Frequency and Power factor display
screens
In Set-up Mode, this is the “Up” button

3

Select the Power display screens
In Set-up Mode, this is the “Down” button

4

Select the Energy display screens
In Set-up mode, this is the “Enter” or “Right” button

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3.1 Voltage and Current
Each successive pressing of the

button selects a new range:

1-1

Phase to neutral voltages(3p4w)

1-2

Phase to neutral voltages(3p3w)

2

Current on each phase

3-1

Phase to neutral voltage THD%(3p4w)

3-2

Phase to neutral voltage THD%(3p3w)

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4

Current THD% for each phase

3.2 Frequency and Power factor and Demand
Each successive pressing of the

button selects a new range:

1

Frequency and Power Factor (total)

2

Power Factor of each phase

3

Maximum Power Demand

4

Maximum Current Demand

-4-

3.3 Power
Each successive pressing of the

button select a new range:

1

Instantaneous Active Power in kW

2

Instantaneous Reactive Power in kVAr

3

Instantaneous Volt-amps in KVA

4

Total kW, kVArh, kVA

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Energy Measurements
Each successive pressing of the

button selects a new range:

1-1

Imported active energy in kWh

1-2

Exported active energy in kWh

2-1

Imported reactive energy in kVArh

2-2

Exported reactive energy in kVArh

3-1

Total active energy in kWh

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3-2

Total reactive energy in kVArh

4. Set-up
To enter set-up mode, pressing the
appears.

button for 3 seconds, until the password screen

Setting up is password-protected so you must enter the correct password (default ‘1000’) before
processing. If an incorrect password is entered, the display will show: Err

To exit setting-up mode, press

repeatedly until the measurement screen is restored.

4.1 Set-up Entry Methods
Some menu items, such as password, require a four-digit number entry while others, such as
supply system, require selection from a number of menu options.
4.1.1 Menu Option Selection
1) Use the
and
buttons to select the required item from the menu. Selection
does not roll over between bottom and top of list
2) Press

to confirm your selection

3) If an item flashes, then it can be adjusted by the
maybe a further layer.

and

buttons. If not, there

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4) Having selected an option from the current layer, press
The SET indicator will appear.
5) Having completed a parameter setting, press

to confirm your selection.

to return to a higher menu level. The

SET indicator will be removed and you will be able to use the and
further menu selection.
6) On completion of all set-up, press
restored.

buttons for

repeatedly until the measurement screen is

4.1.2 Number Entry Procedure
When setting up the unit, some screens require the entering of a number. In particular, on entry
to the setting up section, a password must be entered. Digits are set individually, from left to
right. The procedure is as follows:
1) The current digit to be set flashes and is set using the
2) Press
been set.

and

buttons

to confirm each digit setting. The SET indicator appears after the last digit has

3) After setting the last digit, press
will be removed.

to exit the number setting routine. The SET indicator

4.2 Change password
1
Use the
and
choose the change password option

to

2-1
Press the
to enter the change
password routine. The new password
screen will appear with the first digit
flashing

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2-2
Use

and

to set the

first digit and press
to confirm
your selection. The next digit will flash.

2-3

Repeat the procedure for the remaining
three digits

2-4

After setting the last digit, SET will show.

Press
removed

to exit the number setting routine and return to the Set-up menu. SET will be

4.3 DIT Demand Integration Time
This sets the period in minutes over which the current and power readings are integrated for
maximum demand measurement. The options are: 0, 5, 8, 10, 15, 20, 30, 60 minutes
1
From the set-up menu, use

and

buttons to select the DIT
option. The screen will show the
currently selected integration time.
2-1
Press
to enter the selection
routine.
The current time interval will flash

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2-2
Use
and
select the time required.

buttons to

2-3
Press
to confirm the selection.
SET indicator will appear.

Press

to exit the DIT selection routine and return to the menu.

4.4 Backlit setup
1

The backlit lasting time is settable
Default lasting time is 60minutes
For example, if it’s set as 5, the backlit
will be off in 5minutes from the last
time operation on the meter.

2
Press
to enter the selection
routine. The current time interval will
flash
The options can be:
0(always on),5,10,30,60,120minutes

Use
set-up,

and

buttons to select the time required. Press

to confirm the

4.5 Supply System
Use this section to set the type of power supply being monitored.

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1
From the Set-up menu, use
and
buttons to select the
System option. The screen will show the
currently selected power supply.
2-1
Press
to enter the selection
routine. The current selection will flash

2-2
Use
and
buttons to
select the required system option:
1P2(W),3P3(W) ,3P4(W)

2-3
Press
to confirm the selection.
SET indicator will appear.

Press
to exit the system selection routine and return to the menu. SET will disappear
and you will be returned to the main Set-up Menu

4.6 Pulse output
This option allows you to configure the pulse output 1. The output can be set to provide a pulse
for a defined amount of energy active or reactive.
Use this section to set up the pulse output for:
Total kWh/ Total kVArh
Import kWh/Export kWh
Import KVArh/Export KVArh

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1
From the Set-up menu, use
and
buttons to select the
Pulse output option.

2-1
Press
to enter the selection
routine. The unit symbol will flash.

2-2
Use
and
choose kWh or kVArh.

On completion of the entry procedure, press

buttons to

to confirm the setting and press

to return to the main set up menu.
4.6.1 Pulse rate
Use this to set the energy represented by each pulse. Rate can be set to 1 pulse per
dFt/0.01/0.1/1/10/100kWh/kVArh.

(It shows 1 impulse = 10kWh/kVArh)
1
From the Set-up menu, use
and
buttons to select the Pulse
Rate option.

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2
Press
to enter the selection
routine. The current setting will flash.
Note: When it’s dFt,
it means 2.5Wh/VArh

Use

and

procedure, press
up menu.

buttons to choose pulse rate. On completion of the entry
to confirm the setting and press

to return to the main set

4.6.2 Pulse Duration
The energy monitored can be active or reactive and the pulse width can be selected as
200, 100(default) or 60ms.

(It shows pulse width of 200ms)
1-1
From the Set-up menu, use
and
buttons to select the
Pulse width option.

1-2
Press
to enter the selection
routine. The current setting will flash.

Use

and

procedure, press
up menu.

buttons to choose pulse width. On Completion of the entry
to confirm the setting and press

to return to the main set

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4.7 Communication
There is a RS485 port can be used for communication using Modbus RTU protocol. For Modbus
RTU, parameters are selected from Front panel.
4.7.1 RS485 Address

(The range is from 001 to 247)
1
From the Set-up menu, use

and

buttons to select the Address ID

2-1
Press
button to enter the
selection routine. The current setting will
be flashing.

2-2
Use
and
buttons to
choose Modbus Address(001 to 247)

On completion of the entry procedure, press

button to confirm the setting and press

button to return the main set-up menu.

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4.7.2 Baud Rate
1
From the Set-up menu, use

and

buttons to select the Baud Rate
option.

2-1
Press
to enter the selection
routine. The current setting will flash.

2-2
Use
and
buttons to
choose Baud rate 2.4k. 4.8k, 9.6k, 19.2k,
38.4k

On completion of the entry procedure, press

to confirm the setting and press

to return to the main set up menu.

4.7.3 Parity
1
From the Set-up menu, use

and

buttons to select the Parity
option.

2-1
Press
to enter the selection
routine. The current setting will flash.

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2-2
Use
and
buttons to
choose Parity (EVEN / ODD / NONE)

On Completion of the entry procedure, press

to confirm the setting and press

to return to the main set up menu.

4.7.4 Stop bits
1
From the Set-up menu, use

and

buttons to select the Stop Bit
option.

2-1
Press
to enter the selection
routine. The current setting will flash.

2-2
Use
and
choose Stop Bit (2 or 1)

On completion of the entry procedure, press

buttons to

to confirm the setting and press

to return to the main set up menu.
Note: Default is 1, and only when the parity is NONE that the stop bit can be changed to 2.

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4.8 CLR
The meter provides a function to reset the maximum demand value of current and power.
1
From the Set-up menu, use

and

buttons to select the reset
option.

2
Press
to enter the selection
routine. The MD will flash.

Press

to confirm the setting and press

to return to the main set up menu.

5 Specifications
5.1 Measured Parameters
The unit can monitor and display the following parameters of a single phase two wire(1p2w),
three phase three wire(3p3w) or four phase four wire(3p4w) supply.
5.1.1 Voltage and Current
Phase to neutral voltages 100 to 289V a.c. (not for 3p3w supplies)
Voltages between phases 173 to 500V a.c. (3p supplies only)
Basic current (Ib): 10A
Max current : 100A
Min. Current: 5% of Ib
Starting current: 0.4% of Ib
Percentage total voltage harmonic distortion (THD%) for each phase to N ( not for 3p3w supplies)
Percentage voltage THD% between phases (three phase supplies only)
Current THD% for each phase

5.1.2 Power factor and Frequency and Max. Demand
Frequency in Hz
Instantaneous power:
Power 0 to 99999 W
Reactive Power 0 to 99999 VAr
Volt-amps 0 to 99999 VA
Maximum demanded power since last Demand reset Power factor
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Maximum neutral demand current, since the last Demand reset (for 3p4w supply only)
5.1.3 Energy Measurements
 Imported active energy
0 to 999999.99 kWh
 Exported active energy
0 to 999999.99 kWh
 Imported reactive energy 0 to 999999.99 kVArh
 Exported reactive energy 0 to 999999.99 kVArh
 Total active energy
0 to 999999.99 kWh
 Total reactive energy
0 to 999999.99 kVArh
5.2 Measured Inputs
Voltage inputs through 4-way fixed connector with 25mm² stranded wire capacity. single phase
two wire(1p2w), three phase three wire(3p3w) or four phase four wire(3p4w) unbalanced. Line
frequency measured from L1 voltage or L3 voltage.
5.3 Accuracy
 Voltage
 Current
 Frequency
 Power factor
 Active power (W)
 Reactive power (VAr)
 Apparent power (VA)
 Active energy (Wh)
 Reactive energy (VARh)
 Total harmonic distortion
 Temperature co-efficient


Response time to step input

0·5% of range maximum
0·5% of nominal
0·2% of mid-frequency
1% of unity (0.01)
±1% of range maximum
±1% of range maximum
±1% of range maximum
Class 1 IEC 62053-21
±1% of range maximum
1% up to 31st harmonic
Voltage and current = 0.013%/°C typical
Active energy = 0·018%/°C, typical
1s, typical, to >99% of final reading, at 50 Hz.

5.4 Interfaces for External Monitoring
Three interfaces are provided:
 an RS485 communication channel that can be programmed for Modbus RTU protocol
 an Pulse output(Pulse 1) indicating real-time measured energy.(configurable)
 an Pulse output(Pulse 2) 400imp/kWh
The Modbus configuration (Baud rate etc.) and the pulse output assignments (kW/kVArh,
import/export etc.) are configured through the Set-up screens.
5.4.1 Pulse Output
The unit provides two pulse outputs. Both pulse outputs are passive type.
Pulse output 1 is configurable. The pulse output can be set to generate pulses to represent total /
import/export kWh or kVarh.
The pulse constant can be set to generate 1 pulse per:
dFt = 2.5 Wh/VArh
0.01 = 10 Wh/VArh

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0.1 = 100 Wh/VArh
1 = 1 kWh/kVArh
10 = 10 kWh/kVArh
100 = 100 kWh/kVArh
Pulse width: 200/100/60ms
Pulse output 2 is non-configurable. It is fixed up with active kWh. The constant is 400imp/kWh.
5.4.2 RS485 Output for Modbus RTU
For Modbus RTU, the following RS485 communication parameters can be configured from the
Set-up menu:
Baud rate 2400, 4800, 9600, 19200, 38400
Parity none (default)/odd/even
Stop bits 1 or 2
RS485 network address nnn – 3-digit number, 001 to 247
Modbus™ Word order Hi/Lo byte order is set automatically to normal or reverse. It cannot
be configured from the set-up menu.
5.5 Reference Conditions of Influence Quantities
Influence Quantities are variables that affect measurement errors to a minor degree. Accuracy is
verified under nominal value (within the specified tolerance) of these conditions.
 Ambient temperature
23°C ±1°C
 Input frequency
50 or 60Hz ±2%
 Input waveform
Sinusoidal (distortion factor < 0·005)
 Magnetic field of external origin
Terrestrial flux
5.6 Environment
 Operating temperature
 Storage temperature
 Relative humidity
 Altitude
 Warm up time
 Vibration

-25°C to +55°C*
-40°C to +70°C*
0 to 90%, non-condensing
Up to 2000m
1 minute
10Hz to 50Hz, IEC 60068-2-6, 2g

5.7 Mechanics

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6 Wiring diagram

- 20 -