Schweitzer Engineering Laboratories SEL-3031 SEL-3031 User Manual 3031 IM

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SEL-3031
Serial Radio
Transceiver
Instruction Manual
20091009
*PM3031-01*
© 2009 by Schweitzer Engineering Laboratories, Inc. All rights reserved.
All brand or product names appearing in this document are the trademark or registered trademark of their
respective holders. No SEL trademarks may be used without written permission. SEL products appearing in this
document may be covered by US and Foreign patents.
Schweitzer Engineering Laboratories, Inc. reserves all rights and benefits afforded under federal and
international copyright and patent laws in its products, including without limitation software, firmware, and
documentation.
The information in this manual is provided for informational use only and is subject to change without notice.
Schweitzer Engineering Laboratories, Inc. has approved only the English language manual.
This product is covered by the standard SEL 10-year warranty. For warranty details, visit www.selinc.com or
contact your customer service representative.
PM3031-01
SEL-3031 Instruction Manual
Date Code 20091009
Table of Contents
List of Tables ........................................................................................................... iii
List of Figures ...........................................................................................................v
Preface...................................................................................................................... vii
Section 1: Introduction and Overview
Overview ................................................................................................................1.1
Features, Benefits, and Applications......................................................................1.2
Models, Options, and Accessories .........................................................................1.2
Product Diagrams...................................................................................................1.4
Specifications .........................................................................................................1.7
Section 2: Installation
Overview ................................................................................................................2.1
Connections............................................................................................................2.7
Front-Panel Indicators ..........................................................................................2.11
Communications ..................................................................................................2.12
Section 3: Job Done Examples
Overview ................................................................................................................3.1
High-Speed Teleprotection or Control With MIRRORED BITS
Communications..........................................................................................3.1
Using an SEL Information Processor to Collect Relay Status and
Measurements..............................................................................................3.6
Section 4: Settings and Commands
PC Software............................................................................................................4.1
Settings ...................................................................................................................4.5
Commands............................................................................................................4.15
Section 5: Performance Monitoring, Testing, and Troubleshooting
Overview ................................................................................................................5.1
Monitoring Radio Performance..............................................................................5.1
Self-Test .................................................................................................................5.5
Troubleshooting .....................................................................................................5.6
Appendix A: Firmware and Manual Versions
Firmware ...............................................................................................................A.1
Instruction Manual ................................................................................................A.1
Date Code 20091009
SEL-3031 Instruction Manual
ii
Table of Contents
Appendix B: SEL-3044 Encryption Card
Overview................................................................................................................B.1
NIST FIPS 140-2 Level 2 Security Requirements ................................................B.1
Theory of Operation—SEL Protocol.....................................................................B.2
SEL-3031 Instruction Manual
Date Code 20091009
List of Tables
Table 1.1
Table 2.1
Table 2.2
Table 2.3
Table 2.4
Table 2.5
Table 2.6
Table 2.7
Table 2.8
Table 2.9
Table 4.1
Table 4.2
Table 4.3
Table 4.4
Table 4.5
Table 4.6
Table 4.7
Table 4.8
Table 4.9
Table 4.10
Table 4.11
Table 4.12
Table 4.13
Table 4.14
Table 4.15
Table 4.16
Table 4.17
Table 4.18
Table 4.19
Table 4.20
Table 4.21
Table 4.22
Table 4.23
Table 5.1
Table 5.2
Table A.1
Table A.2
Date Code 20091009
Radio Antenna and Cable Accessories ..................................1.3
Fresnel Zone Diameter ..........................................................2.3
900-MHz Frequency Skip Zones...........................................2.6
Length vs. Loss in Coaxial Cables at 900 MHz ....................2.6
Default Passwords................................................................2.10
Password Jumper Position ...................................................2.10
Communications Cables for Time and Communications
Connections ....................................................................2.11
Front-Panel Status Indicator LEDs......................................2.11
SEL-3031 Port Description..................................................2.12
SEL-3031 Port Description..................................................2.13
ACSELERATOR QuickSet SEL-5030 Software ......................4.1
Device Editor Menus .............................................................4.9
Global Settings ....................................................................4.11
Radio Settings......................................................................4.12
SKIP Zone Frequencies .......................................................4.12
Port X Settings.....................................................................4.14
Fixed Port Settings...............................................................4.15
DATE Command..................................................................4.17
ID Command .......................................................................4.17
IRIG Command ...................................................................4.18
L_D Command ....................................................................4.18
PAS Command.....................................................................4.19
Factory Default Passwords ..................................................4.19
Valid Password Characters ..................................................4.20
QUIT Command ..................................................................4.20
RAD Command ...................................................................4.21
SER Command ....................................................................4.22
SET Command (Change Settings).......................................4.22
SET Command Editing Keystrokes .....................................4.23
SHO Command (Show/View Settings)................................4.23
STA Command (Device Self-Test Status) ...........................4.24
STA Command Report.........................................................4.24
Command Definitions..........................................................4.25
Device Self-Tests ...................................................................5.5
Troubleshooting Tips .............................................................5.6
Firmware Revision History...................................................A.1
Instruction Manual Revision History....................................A.1
SEL-3031 Instruction Manual
This page intentionally left blank
List of Figures
Figure 1.1
Figure 1.2
Figure 1.3
Figure 1.4
Figure 2.1
Figure 2.2
Figure 2.3
Figure 2.4
Figure 2.5
Figure 2.6
Figure 2.7
Figure 2.8
Product Overview .............................................................................1.1
SEL-3031 Dimensions ......................................................................1.4
SEL-3031 Rack Mount (Front and Rear) .........................................1.5
SEL-3031 Wall Mount (Front and Rear) ..........................................1.6
Fresnel Zone .....................................................................................2.2
Antenna Polarization.........................................................................2.5
Wall-Mount and Rack-Mount Rear Connections .............................2.7
Two-Wire EIA-485 Connections ....................................................2.12
EIA-232 and EIA-485 DB-9 Connector Pin Numbers ...................2.13
SEL Cable C245A: SEL-3031 to Computer...................................2.14
SEL Cable C285: SEL-3031 to DTE Device (SEL Relays) ...........2.15
SEL Cable C782/C387: SEL-3031 to SEL Communications
Processor....................................................................................2.15
Figure 2.9 USB Interface .................................................................................2.16
Figure 3.1 SEL MIRRORED BITS Connection Example......................................3.1
Figure 3.2 SEL-3031 Port Settings for MIRRORED BITS Connection ................3.2
Figure 3.3 SEL-351 Port Settings for MIRRORED BITS Connection ..................3.3
Figure 3.4 SEL-451 Port Settings for MIRRORED BITS Connection ..................3.4
Figure 3.5 SEL-2505 DIP Switch Settings for MIRRORED BITS Connection ....3.5
Figure 3.6 TAR ROKA Command From an SEL-351 .......................................3.6
Figure 3.7 SEL-3031 Linking Information Processors to Relays ......................3.6
Figure 3.8 SEL-3031 Port 1 Settings for Fast Messaging..................................3.7
Figure 3.9 SEL-351 Port Settings for Fast Messaging.......................................3.8
Figure 3.10 Example AUTO Command Output...................................................3.9
Figure 4.1 Communications Menu.....................................................................4.2
Figure 4.2 Serial Port Communications Parameters ..........................................4.3
Figure 4.3 Terminal Window Menu ...................................................................4.4
Figure 4.4 Device Response to ID Command ....................................................4.4
Figure 4.5 Selection of Drivers ..........................................................................4.7
Figure 4.6 Update Part Number .........................................................................4.8
Figure 4.7 New Setting Screen...........................................................................4.8
Figure 4.8 Status Screen...................................................................................4.10
Figure 4.9 Radio Strength and Channel Availability .......................................4.11
Figure 4.10 RAD Command Response ..............................................................4.21
Figure 4.11 Device Response to the STATUS Command..................................4.24
Figure 5.1 Example RAD Command .................................................................5.2
Figure 5.2 RBAD Generation.............................................................................5.4
Figure B.1 SEL-3044 Encryption Card ............................................................. B.1
Figure B.2 In-Band Data Packet Format............................................................ B.4
Figure B.3 Operation of the AES Encryption Function..................................... B.5
Figure B.4 Encryption Card Location................................................................ B.7
Date Code 20091009
SEL-3031 Instruction Manual
This page intentionally left blank
Preface
Manual Overview
The SEL-3031 Serial Radio Transceiver manual includes the information needed to
properly install and operate the product.
The scope of this manual includes specifications, installation, mechanical information,
self-monitoring, and alarming.
An overview of each manual section and topics follows.
Preface. Describes the manual organization and conventions used to present
information.
Section 1: Introduction and Overview. Describes the basic features and functions
of the SEL-3031, and lists the specifications.
Section 2: Installation. Describes how to mount and wire the SEL-3031;
illustrates wiring connections for various applications.
Section 3: Job Done Examples. Describes common SEL-3031 applications.
Section 4: Settings and Commands. Describes settings and commands for use
with the SEL-3031.
Section 5: Performance Monitoring, Testing, and Troubleshooting. Lists common
operating and troubleshooting questions.
Appendix A: Firmware and Manual Versions. Details differences between
firmware versions. Provides a record of changes made to the manual.
Appendix B: SEL-3044 Encryption Card. Describes how the encryption card
operates to secure wireless data. Provides installation information.
Date Code 20091009
SEL-3031 Instruction Manual
viii
Preface
Conventions
Conventions
Safety Information
This manual uses three kinds of hazard statements, formatted as follows:
CAUTION
Indicates a potentially hazardous situation that, if not avoided, may result in
minor or moderate injury or equipment damage.
WARNING
Indicates a potentially hazardous situation that, if not avoided, could result in
death or serious injury.
DANGER
Indicates an imminently hazardous situation that, if not avoided, will result in
death or serious injury.
SEL-3031 Cautions, Warnings, and Dangers
The following hazard statements appear in the body of this manual in English. See the
following table for the English and French translation of these statements.
English
CAUTION
Although the power level is low, concentrated
energy from a directional antenna may pose a
health hazard. Do not allow users to come
closer than 23 cm (9 in) to the antenna when
the transmitter is operating in indoor or
outdoor environments in the 900-MHz band.
CAUTION
The radio contains devices sensitive to
electrostatic discharge (ESD). Undetectable
permanent damage can result if you do not use
proper ESD procedures. Ground yourself, your
work surface, and this equipment before
removing any cover from this equipment. If
your facility is not equipped to work with these
components, contact SEL about returning this
device and related SEL equipment for service.
SEL-3031 Instruction Manual
French
ATTENTION
Bien que le niveau de puissance soit bas,
l'énergie concentrée d'une antenne
directionnelle peut être un danger pour la
santé. Ne pas autoriser les usagers à
s'approcher à moins de 23 cm (9 po) de
l'antenne quand l'émetteur est en opération
dans un environnement intérieur ou
extérieur dans la bande des 900-MHz.
ATTENTION
La radio contient des circuits sensibles aux
décharges électrostatiques (DES). Des
dommages permanents non-décelables
peuvent résulter de l’absence de précautions
contre les DES. Raccordez-vous
correctement à la terre, ainsi que la surface
de travail et l’appareil avant d’en retirer un
panneau. Si vous n’êtes pas équipés pour
travailler avec ce type de composants,
contacter SEL afin de retourner l’appareil
pour un service en usine.
Date Code 20091009
Preface
Conventions
English
WARNING
Operator safety may be impaired if the device is
used in a manner not specified by SEL.
WARNING
Atmospheric electrical charge accumulation
can cause potential between the conductor and
shield of the feedline, or cause lightning to
strike an antenna. A lightning protector should
be installed to prevent damage to equipment or
injury to personnel.
WARNING
Do not look into the fiber (laser)
ports/connectors.
WARNING
Do not look into the end of an optical cable
connected to an optical output.
WARNING
This device is shipped with default passwords.
Default passwords should be changed to private
passwords at installation. Failure to change
each default password to a private password
may allow unauthorized access. SEL shall not
be responsible for any damage resulting from
unauthorized access.
DANGER
Disconnect or de-energize all external
connections before opening this device.
Contact with hazardous voltages and currents
inside this device can cause electrical shock
resulting in injury or death.
Date Code 20091009
ix
French
AVERTISSEMENT
La sécurité de l’opérateur peut être
compromise si l’appareil est utilisé d’une
façon non indiquée par SEL.
AVERTISSEMENT
L'accumulation de charges électriques de
type atmosphérique peut être la cause d'une
différence de potentiel entre le conducteur
et le blindage de la ligne d'alimentation ou
peut attirer la foudre sur l'antenne. Un
parafoudre devrait être installé pour
prévenir les dommages à l'équipement ou
les blessures au personnel.
AVERTISSEMENT
Ne pas regarder vers l’extremité des ports ou
connecteurs de fibres pour laser.
AVERTISSEMENT
Ne pas regarder vers l’extrémité d’un câble
optique raccordé à une sortie optique.
AVERTISSEMENT
Cet appareil est expédié avec des mots de
passe par défaut. A l’installation, les mots de
passe par défaut devront être changés pour
des mots de passe confidentiels. Dans le cas
contraire, un accés non-autorisé á
l’équipement peut être possible. SEL décline
toute responsabilité pour tout dommage
résultant de cet accés non-autorisé.
DANGER
Débrancher tous les raccordements externes
avant d’ouvrir cet appareil. Tout contact avec
des tensions ou courants internes à l’appareil
peut causer un choc électrique pouvant
entraîner des blessures ou la mort.
SEL-3031 Instruction Manual
This page intentionally left blank
Section 1
Introduction and Overview
Overview
The SEL-3031 is a 900-MHz, license-free, spread-spectrum radio. The radio operates
in the ITU Region 2 ISM band of 902–928 MHz using a fast frequency-hopping
algorithm for noise immunity and long-distance operation.
The SEL-3031 prevents the need for multiple sets of radios or expensive dedicated
fiber transmitting over long distances. Figure 1.1 shows the flexibility of the SEL-3031
in providing DNP3 SCADA information, MIRRORED BITS® control for reclosing
coordination, and engineering access to the SEL-651R Recloser Control.
SEL-651R
SEL-3031
Engineering
Access
DNP
SEL-3351
MIRRORED BITS
SEL-351S
SEL-3031
Substation Radio
Pole-Mount Radio
Figure 1.1
Product Overview
Date Code 20091009
SEL-3031 Instruction Manual
1.2
Introduction and Overview
Features, Benefits, and Applications
Features, Benefits, and Applications
➤
Three Ports in One Radio Reduce Costs. Simultaneously
communicates with up to three independent ports and protocols.
➤
Low Latency Enables Fast Control. Transfers control commands
with a typical 5.5-millisecond latency with SEL MIRRORED BITS®
communications.
➤
Strong Security Thwarts Attackers. Protects critical data and repels
malicious attacks with optional encryption card, using session
authentication and strong 256-bit Advanced Encryption Standard
(AES) technology.
➤
Tough Radio Operates in Extreme Conditions. Is designed, built,
and tested for trouble-free operation in extreme temperature,
electromagnetic interference, shock, and vibration conditions.
➤
No Licensing Reduces Delays and Expenses. Uses the license-free,
900-MHz ISM band for on-time, on-budget projects.
➤
Mounting Options Simply Installation. Order your SEL-3031 in
one of three different packages: rack-mount, wall-mount, and NEMA
3R prewired radio solution.
➤
Multiple Protocols Satisfy Interconnection Requirements.
Communicate with industry-standardized byte-oriented protocols,
such as DNP3, Modbus®, SEL MIRRORED BITS communications,
IEEE C37.118 Synchrophasors, SEL Fast Messaging, and SEL
ASCII.
➤
Flexible Serial Port Options Match Integration Needs. Order
serial Port 1 as EIA-232, EIA-485, or optical fiber to easily connect
to your existing devices.
➤
Simple Settings Streamline Radio Commissioning. Use
QuickSet® SEL-5030 Software for all settings.
ACSELERATOR
➤
USB Management Port Conveniently Connects to PC. Make
settings changes, verify status information for proper installation, and
verify radio performance without affecting the three serial channels.
Models, Options, and Accessories
Standard Features
➤
Three EIA-232 serial ports
➤
IRIG-B time code input
SEL-3031 Instruction Manual
Date Code 20091009
Introduction and Overview
Models, Options, and Accessories
➤
Power supply
➢
Wall mount: 9–30 Vdc
➢
Rack mount: 24–48 Vdc, 125/250 Vac or Vdc
➤
ACSELERATOR
➤
Protocol pass-through support
➢
DNP3
➢
Modbus
➢
SEL MIRRORED BITS
➢
SEL Fast Messaging
➢
SEL ASCII
➢
IEEE C37.118 Synchrophasors
1.3
QuickSet software
Optional Features
➤
One port EIA-485
➤
One port fiber-optic (SEL-2812-compatible)
➤
SEL-3044 Encryption Card
Accessories
Table 1.1
Radio Antenna and Cable Accessories
Description
Part Number
Feed Line
RG-8 TNC to N Connector
C964
RG-8 TNC to TNC
C965
LMR-400 TNC to N Connector
C966
LMR-400 TNC to TNC
C961
Antenna
Three-element 8.5 dBi Yagi, N Connector
235-0221
Five-element 11.1 dBi Yagi, N Connector
235-0220
Vertical 2.15 dBi Gain Omni-directional, N Connector
235-0231
Surge Protection
Gas Tube Coaxial Surge Protector, TNC Connector
Date Code 20091009
915900139
SEL-3031 Instruction Manual
Figure 1.2
SEL-3031 Instruction Manual
1.72
(43.7)
6.30
(160)
0.21
(5.3)
in
(mm)
LEGEND
19.00
(482.6)
FRONT
18.31
(465.1)
TOP
RACK-MOUNT CHASSIS
SIDE
0.05
(1.27)
1.73
(43.9)
6.40
(162.6)
FRONT
8.66
(219.7)
9.15
(232.4)
TOP
i9163b
SIDE
3.00 5.73
(76.2) (145.5)
WALL-MOUNT CHASSIS
1.4
Introduction and Overview
Product Diagrams
Product Diagrams
SEL-3031 Dimensions
Date Code 20091009
1.5
i4210b
Introduction and Overview
Product Diagrams
Figure 1.3
SEL-3031 Rack Mount (Front and Rear)
Date Code 20091009
SEL-3031 Instruction Manual
1.6
Introduction and Overview
Product Diagrams
i4243c
i4211b
Figure 1.4
SEL-3031 Wall Mount (Front and Rear)
SEL-3031 Instruction Manual
Date Code 20091009
Introduction and Specifications
Specifications
1.7
Specifications
Communications
General
Temperature Range
–40° to +85°C per IEC 60068-2-1 and
60068-2-2
Communications Ports
Serial Port 1:
EIA-232, EIA-485
(ordering option)
SEL-2812 Fiber-Optic
Port (ST connectors)
Data Speed: 19200 bps;
9600 bps with encryption
card
Serial Port 2, 3:
Standard EIA-232
Data Speed: 19200 bps;
9600 bps with encryption
card
Operating Environment
Pollution
Degree:
Relative
Humidity:
5–95%, noncondensing
Maximum
Altitude:
2000 m
Protocols Supported
Dimensions
Wall Mount:
43.9 mm x 219.7 mm x
162.6 mm
(1.73 in x 8.66 in x
6.40 in)
Rack Mount:
43.7 mm x 482.6 mm x
160.0 mm
(1.72 in x 19.00 in x
6.3 in)
Time-Code Input
Port 2, Pins 4 and 6
Format:
Demodulated IRIG-B
Input
Impedance:
333 
Accuracy:
± 5 milliseconds
Radio Latency
SEL-3031
MIRRORED BITS: 5.5 ms typical
Standard:
SEL-3031 With SEL-3044 Encryption Card
MIRRORED BITS: 16 ms typical
Standard:
15 ms typical
Transmitter
Form B Contact
(open when energized and passes diagnostics)
Frequency Band: 902–928 MHz ISM band
Modulation:
Operating
Voltage:
250 Vdc or 190 Vac
Dielectric Test
Voltage:
500 Vrms
GFSK
Operating Mode: Point-to-Point
RF Connector:
TNC
Power Output:
1 W (30 dBm) to
100 mW (20 dBm)
in steps of 1 dBm
6A
Channel
Bandwidth:
Date Code 20091009
4 ms typical
Radio
Alarm Contact
Continuous
Carry:
Modbus, DNP3, SEL MIRRORED BITS
Communications (MB8), ACSELERATOR
QuickSet SEL-5030 Software Support,
SEL ASCII and Compressed ASCII, SEL
Fast Messaging, IEEE C37.118
Synchrophasors
250 kHz
SEL-3031 Instruction Manual
1.8
Introduction and Specifications
Specifications
Receiver
Sensitivity:
–97 dBm
Bit Error Rate
(BER):
<10–6 at –97 dBm
Distance:
20 miles, line of sight
Error Detection: 32-bit CRC (MB8 mode)
Power Supply
Rated Supply Voltage
Wall-Mount
Model:
12/24 Vdc
Damp Heat,
Cyclic:
IEC 60068-2-30:2005
25–55°C, 6 cycles, 95%
relative humidity
Dry Heat:
IEC 60068-2-2:2007
+85°C, 16 hours
Dielectric Strength and Impulse Tests
Dielectric
(HiPot):
IEC 60255-5:2000
IEEE C37.90–2005
Impulse:
IEC 60255-5:2000
0.5 J, 5 kV
RFI and Interference Tests
EMC Immunity
Low-Voltage
Model:
24/48 Vdc
Standard:
IEEE 1613, Class 2
High-Voltage
Model:
125/250 Vdc
110/240 Vac, 50/60 Hz
Electrostatic
Discharge:
IEC 61000-4-2:2008
Severity Level 4
8 kV contact discharge
15 kV air discharge
IEEE C37.90.3–2001
Severity Level 4
8 kV contact discharge
15 kV air discharge
Radiated RF
Immunity:
IEC 61000-4-3:2008
10 V/m
IEEE C37.90.2–2004
35 V/m
Fast Transient,
Burst
Immunity:
IEC 61000-4-4:2004
4 kV @ 2.5 kHz, and 5.0
kHz for communications
ports, power supply,
alarm contacts
Input Voltage Range
Wall-Mount
Model:
9–30 Vdc
Low-Voltage
Model:
18–60 Vdc
High-Voltage
Model:
85–275 Vdc; 85–264 Vac
Power Consumption
Wall Mount:
<5W
Rack Mount:
<7W
Type Tests
Communications Equipment Tests
IEEE 1613-2003
Environmental Tests
Enclosure
Protection:
IEC 60529:2001
Vibration
Resistance:
IEC 60255-21-1:1988
Class 1 Endurance,
Class 2 Response
IEC 60255-21-3:1993
Class 2
Shock
Resistance:
IEC 60255-21-2:1988
Class 1 shock withstand,
bump,
Class 2 shock response
Cold:
IEC 60068-2-1:2007
–40°C, 16 hours
SEL-3031 Instruction Manual
Surge Withstand IEC 60255-22-1:2007
Capability
2.5 kV common-mode,
Immunity:
1 kV differential-mode
IEEE C37.90.1–2002
2.5 kV oscillatory, 4 kV
fast transient for
communications ports,
power supply, alarm
contacts
Conducted RF
Immunity:
IEC 61000-4-6:2008
10 Vrms
Digital Radio
Telephone RF
Immunity:
ENV 50204-1995
Severity Level 10 V/m at
900 MHz and 1.89 GHz
Date Code 20091009
Introduction and Specifications
Specifications
1.9
EMC Emissions
Radiated Emissions
FCC Part 15.247; ICES-001; RSS-210
This device complies with Part 15 of the
FCC rules. Operation is subject to the
following two conditions:
1. This device may not cause harmful
interference, and
2. This device must accept any interference
received, including interference that may
cause undesired operation.
FCC Part 15, Class A; ICES-003
Note: This equipment has been tested and
found to comply with the limits for a
Class A digital device, pursuant to Part
15 of the FCC Rules. These limits are
designed to provide reasonable
protection against harmful interference
when the equipment is operated in a
commercial environment.
This equipment generates, uses, and can
radiate radio frequency energy and, if not
installed and used in accordance with the
instruction manual, may cause harmful
interference to radio communications.
Operation of this equipment in a
residential area is likely to cause harmful
interference in which case the user will
be required to correct the interference at
his own expense.
FCC Section 15.21
Users manual for an intentional or
unintentional radiator shall caution the
user that changes or modifications not
expressly approved by the party
responsible for compliance could void
the user’s authority to operate the
equipment.
Certifications
ISO: Equipment designed and manufactured
using ISO 9001-certified quality program.
FCC ID:
R34SEL - 3031
IC:
4468A - SEL3031
Date Code 20091009
SEL-3031 Instruction Manual
This page intentionally left blank
Section 2
Installation
Overview
RF Exposure Notice
RF EXPOSURE The SEL-3031 transmitter module is approved for use only with specific
antenna, cable, and output power configurations that have been tested and
approved for use. Modifications to the SEL-3031, the antenna system, or
to the power output that have not been explicitly specified by the
manufacturer are not permitted and may render the radio non-compliant with
applicable regulatory authorities. The radio equipment described in this manual emits
radio frequency energy. Professional installation is required. The antenna(s) for this
transmitter must not be colocated or operated in conjunction with any other antenna or
transmitter.
CAUTION
Although the power level is low, concentrated energy from a directional
antenna may pose a health hazard. Do not allow users to come closer than
23 cm (9 in) to the antenna when the transmitter is operating in indoor or
outdoor environments in the 900-MHz band.
FCC Part 15 Notice
NOTE: Operation is subject to the following two conditions:
(1) this device may not cause interference, and (2) this
device must accept any interference, including
interference that may cause undesired operation of the
device.
This equipment has been tested and found to comply with the limits for Class A digital
devices, pursuant to FCC Part 15 Rules. These limits are designed to provide
reasonable protection against harmful interference when the equipment is operated in a
commercial environment. This equipment generates, uses, and radiates radio frequency
energy, and if not installed and used in accordance with the instruction manual, may
cause harmful interference to radio communications. Operation of this equipment in a
residential environment is likely to cause harmful interference, in which case the user
will be required to correct the interference at his/her own expense.
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SEL-3031 Instruction Manual
2.2
Installation
Overview
Radio Path
Spread-spectrum radios operating in the 900-MHz ISM band are limited by line-ofsight. Radio line-of-sight is longer than optical line-of-sight, due to the bending of the
radio wave toward the surface of the earth. This radio horizon is typically 30% longer
than the visual horizon. The longer the communications path, the taller the antennas
must be in order to maintain the line-of-sight.
Obstructions in the line-of-sight will impact the performance of the radio, as the
strongest radio signal is communicated directly along the radio line-of-sight.
The line-of-sight between two antennas is shaped like an ellipse (called the Fresnel
zone). The point exactly halfway between the two antennas is the widest part of the
ellipse, as shown in Figure 2.1. At 900 MHz and 1000 feet apart, the Fresnel zone is
16 feet in diameter. At 20 miles apart, it is 170 feet in diameter. Anything within the
Fresnel zone will obstruct and reduce signal strength and availability (the ground,
buildings, vegetation, etc.). Table 2.1 depicts the maximum Fresnel zone diameter and
path loss for some typical path distances.
Figure 2.1
Fresnel Zone
The formula used to calculate the widest distance of the Fresnel zone is as follows:
b = 17.32 d   4f 
where:
b = radius of the Fresnel zone in meters
d = distance between transmitter and receiver in kilometers
f = frequency transmitted in GHz
SEL-3031 Instruction Manual
Date Code 20091009
Installation
Overview
Table 2.1
2.3
Fresnel Zone Diameter
900 MHz
Distance Between Antennas
Fresnel Zone Diameter
Freespace Loss (dB)
300 m (1000 ft)
5 m (16 ft)
81
1.6 km (1 mi)
11.6 m (38 ft)
96
8 km (5 mi)
26 m (85 ft)
110
16 km (10 mi)
36.6 m (120 ft)
116
24 km (15 mi)
44.8 m (147 ft)
119
32 km (20 mi)
51.8 m (170 ft)
122
40 km (25 mi)
60 m (190 ft)
124
Obstructions in the Fresnel zone may also cause multipath interference due to
reflective or refractive signals that may arrive at the receiver out-of-phase with the
desired signal. The Fresnel zone should be 60% clear of obstructions for reliable radio
communications. Large objects outside the Fresnel zone can cause reflections that may
also affect reliable radio operation.
Transmitted Signal
According to FCC and IC, the maximum transmitted power allowed out of an antenna
is 36 dBm EIRP (Equivalent/Effective Isotropically Radiated Power). This is the
amount of equivalent power transmitted equally in all directions using a theoretical
isotropic antenna. EIRP takes into account the power output of the radio, line feed
losses, and the gain of the antenna.
EIRP = SEL-3031 Power Output (dBm) – line-feed loss (dB) + antenna gain (dBi)
Calculate the EIRP so you can set the proper output power on the SEL-3031 to stay in
compliance with FCC and IC regulations; maximum power output from the antenna
must not exceed 36 dBm. The SEL-3031 can transmit up to 1 W or 30 dBm from the
antenna port. If the calculated EIRP exceeds 36 dBm then you must reduce the power
transmitted by the radio by reducing the transmit power setting TXPWR (see the TXPWR
description in Radio Settings on page 4.12 for more information). The radio is shipped with
30 dBm default and can be reduced to 20 dBm. Look up feedline loss in Table 2.3.
Antenna/feedline configurations with net gains (antenna gain minus cable loss) greater than
8.0 dBi must have their output power limited to 341 mW. After setting the transmit power,
measure the actual power.
NOTE: This device has been designed to operate with the
antennas listed in Table 1.1, and having a maximum gain of
11.1 dBi. Antennas not included in this list or having a gain
greater than 11.1 dBi are strictly prohibited for use with
this device. The required antenna impedance is 50 ohms.
Antennas having a gain of greater than 6 dB must use a
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SEL-3031 Instruction Manual
2.4
Installation
Overview
feed line with enough loss to remain compliant with the
maximum 36 dBm EIRP or reduce the radio transmitted
power accordingly.
For example, if you wanted to design a radio system to achieve a 32-km (20-mile) radio
path and run at the highest allowed transmitted power, one way would be to use the
SEL-3031 with 15 meters (50 feet) of LMR 400, lightning arrestor, and the 5-Element
Yagi with 11.1 dBi of gain. The radio would transmit 30 dBm, the feedline loss is 1.95
dB, lightning arrestor loss is 0.15 dB, and the antenna gain is 11.1 dBi. The result
would be 39 dBm, which is 3 dBm higher than allowed by the FCC. You must reduce
the radio’s transmit power setting TXPWR to 27 dBm. This would make your EIRP
equal to 36 dBm. After setting the transmit power, measure the actual power.
NOTE: To reduce potential radio interference to other
users, the antenna type and its gain should be so chosen
that the equivalent isotropically radiated power (EIRP) is
not more than that permitted for successful
communication.
Fade Margin
The fade margin determines the allowable signal loss between the transmitter and
receiver. The fade margin is a function of system gains (transmitter power, receiver
sensitivity, and antenna gain) and system losses (free space loss, losses due to Earth’s
curvature, and coaxial cable loss). Variations in temperature and humidity of the
atmosphere with elevation causes the signals to bend more or bend less, resulting in
fading at the receiver. The longer the path, the more likely deep fades will occur,
requiring a greater fade margin. The formula to calculate free-space loss is shown
below.
Free Space Loss = 92.4 + 20log(f) + 20log(d) dB
where:
f = frequency in GHz
d = distance in km
Regional conditions also impact the probability of signal fade. Generally, mountainous
terrain is more favorable, while tropical areas and those near large bodies of water are
less favorable. One of the results from a site survey is the fade margin. A fade margin
of 20 dB will yield good radio performance.
Site Survey
A line-of-sight path provides the most reliable transmission in all cases. As the distance
increases the need for a clear path becomes more critical in creating a reliable,
available radio link. If the radio path is short then a path study may not be needed. If
you have a clear line-of-site to the other location without obstructions to the Fresnel
zone (see Radio Path) then a path study is generally not needed. Longer distances may
SEL-3031 Instruction Manual
Date Code 20091009
Installation
Overview
2.5
require a path study, a visual path inspection, and a spectrum analysis of the area to
give a good indication of how high the antenna needs to be and how good the radio link
will be.
Radio Interference
The SEL-3031 shares a frequency spectrum with other services and FCC Part 15
(unlicensed) devices in ITU Region 2 (North, Central, and South America). This radio
should not be used in Brazil or Chile due to the regulations defining frequency
allocation. Error-free communications may not be achievable in a given location, and
some level of interference should be expected.
Consider the following points when setting up your system:
➤
Using directional Yagi antennas helps to narrow the radio path and
provide the best path to prevent adjacent interference.
➤
If you suspect interference from a nearby, licensed system (such as a
paging transmitter), it may be helpful to use horizontal polarization
for all of the antennas in the network. Horizontal polarization can
help improve signal availability but will likely increase the path loss.
Horizontal polarization can provide an additional 20 dB of
attenuation to interference because most other services use vertical
polarization in these bands. Figure 2.2 demonstrates antenna
mounting for both vertical and horizontal polarization.
Vertical Polarization
Figure 2.2
Horizontal Polarization
Antenna Polarization
➤
Date Code 20091009
Multiple SEL-3031 systems can coexist in close proximity with
minimal interference as long as each SEL-3031 is assigned a unique
network address. Each network identification uses a specific hop
pattern and number of frequency zones.
SEL-3031 Instruction Manual
2.6
Installation
Overview
Table 2.2
➤
When constant interference is present in a particular frequency zone,
it may be necessary to “lock out” that zone from the SEL-3031
hopping pattern. The SEL-3031 includes a SKIP setting that removes
interfered frequency zones from its hopping pattern. See Table 4.5 for
more information on the skip zones and information on how to set the
SKIP setting. In the USA and Canada, a maximum of six zones may
be skipped, per FCC and IC rules. Check the regulatory requirements
for your country.
➤
The RF power output for all SEL-3031 radios in your system should
be set to the lowest level necessary for reliable communications. This
decreases the likelihood of causing unnecessary interference to
nearby systems. See Table 2.2 for more information on the different
frequency zones.
900-MHz Frequency Skip Zones
Zone 1
Zone 2
Zone 3
Zone 4
Zone 5
Zone 6
Zone 7
Zone 8
902.6–
903.8
904.1–
905.3
905.6–
906.8
907.1–
908.3
909.2–
910.4
910.7–
911.9
912.2–
913.4
913.7–
914.9
Zone 9
Zone 10
Zone 11
Zone 12
Zone 13
Zone 14
Zone 15
Zone 16
915.2–
916.4
916.7–
917.9
918.2–
919.4
919.7–
920.9
921.2–
923.0
923.3–
924.5
924.8926.0
926.3927.5
Feedlines
The feedline used with the antenna is as important as the antenna. Coaxial cables
should have low attenuation and rated for outdoor use. Keep the feedline as short as
possible to minimize signal loss between the radio and antenna. Times Microwave
LMR 400® or RG-8 A/U coax cables are preferred. If longer lengths or less loss is
desired for the radio link then larger cable such as Andrew HELIAX® can be used.
Table 2.3 lists the signal losses (in dB) for the indicated lengths of each cable type at
900 MHz.
Table 2.3
Length vs. Loss in Coaxial Cables at 900 MHz (Sheet 1 of 2)
3.05 Meters
(10 Feet)
12.24 Meters
(50 Feet)
30.48 Meters
(100 Feet)
91.44 Meters
(300 Feet)
RG-8 A/U
(C964)
0.70 dB
3.50 dB
7.0 dB
Unacceptable
Loss
LMR 400
(C966)
Do not use
1.95 dB
3.90 dB
Unacceptable
Loss
1/2-inch
HELIAX
Do not use
1.15 dB
2.29 dB
6.87 dB
Cable Type
SEL-3031 Instruction Manual
Date Code 20091009
Installation
Connections
Table 2.3
2.7
Length vs. Loss in Coaxial Cables at 900 MHz (Sheet 2 of 2)
3.05 Meters
(10 Feet)
12.24 Meters
(50 Feet)
30.48 Meters
(100 Feet)
91.44 Meters
(300 Feet)
7/8-inch
HELIAX
Do not use
0.64 dB
1.28 dB
3.84 dB
1-1/4-inch
HELIAX
Do not use
Do not use
0.95 dB
2.85 dB
1-5/8-inch
HELIAX
Do not use
Do not use
0.80 dB
2.4 dB
Cable Type
Antenna System Ground
Antenna system grounding is not included in the scope of this manual. Please consult a
radio systems engineer or other professional for advice on ground-system design. A
well-designed system will minimize equipment damage and risk of electric shock to
personnel.
Chassis Ground
Connect the grounding terminal labeled GND on the rear panel to a rack frame
ground or main station ground for proper safety and performance. Use 4 mm2
(12 AWG) or heavier wire less than 2 meters (6.6 feet) in length for this
connection. The ground connection should be made before the power connections.
Connections
Rear-Panel Connections
The physical layout of the SEL-3031 connections is shown in Figure 2.3.
Figure 2.3
Wall-Mount and Rack-Mount Rear Connections
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SEL-3031 Instruction Manual
2.8
Installation
Connections
Power Connections
The POWER terminals on the rear panel (labeled +/H and -/N) must connect to the
correct supply voltage. The supply voltage range is located on the serial label. The
wall-mount configuration accepts only 9–30 Vdc. The rack-mount configuration
accepts 24–48 Vdc or 125/250 Vac or Vdc. Check the serial label for power supply
information.
Do not apply power to the SEL-3031 without having a proper 50- load on the antenna
port. If you do not have the proper 50- load connected, the radio antenna port will
shut off, the alarm contact will pulse, and the ALARM LED will illuminate. This
functionality protects the radio circuitry and indicates an antenna or cable failure. The
POWER terminals on the rack-mount version are isolated from chassis ground. The
POWER terminals on the wall-mount version are not isolated from chassis ground. Use
2.5 mm2 (14 AWG) size wire to connect to the POWER terminals on the rack mount.
Place an external circuit breaker or switch no more than 3 meters (9.8 feet) from the
equipment. The circuit breaker (or equivalent approved disconnect device appropriate
for the country of installation) must comply with IEC 60947-1 and IEC 60947-3, be
identified as the disconnect device for the equipment, and be located near the
equipment. This disconnect device must interrupt both the hot (+/H) and the neutral
(–/N) power leads. The maximum current rating for the power disconnect circuit
breaker or overcurrent device (fuse) must be 20 A. An internal power supply fuse
protects the operational power supply. Be sure to use fuses that comply with
IEC 60127-2.
Lightning Protection
WARNING
Atmospheric electrical charge accumulation can cause potential between the
conductor and shield of the feedline, or cause lightning to strike an antenna.
A lightning protector should be installed to prevent damage to equipment or
injury to personnel.
Mounting the antenna on an equipment building roof or tower is safest because the
potential rise on the outside of either of these structures will approximately equal the
potential on the inside. A lightning protector (Gas Tube Coaxial Surge Protector, SEL
part number 915900139) should be used to equalize the difference in potential that can
occur between the center conductor and the shield of the coaxial cable between the
antenna and the radio. The higher the antenna is mounted on a support structure, the
greater the probability of equipment damage resulting from a lightning strike.
In all surge-protector applications, you should mount the surge protector at the building
or enclosure entrance, and ground the surge-protector body. Ground the radio to the
same point as the surge-protector ground to avoid ground-rise-potential damage.
When using the surge protector, order an additional C965 or C961 cable and place this
cable between the SEL-3031 and the surge protector. Because the distance varies from
the SEL-3031 to the surge protector, be sure to specify this cable at approximately the
correct length (plus 10 to 20 percent for installation variability).
SEL-3031 Instruction Manual
Date Code 20091009
Installation
Connections
2.9
Grounding (Earthing) Connections
You must connect the ground terminal labeled GND to a rack frame or
switchgear ground for proper safety and performance. Use 2.5 mm2 (14 AWG)
wire less than 2 meters (6.6 feet) in length for the ground connection.
Serial Ports
Because all ports (1, 2, and 3) are independent, you can communicate to any
combination simultaneously. All EIA-232 ports accept DB-9 male connectors. The
serial port EIA-485 option for Port 1 is also a DB-9 male connector. If Port 1 is ordered
with the EIA-485 option the product will ship with a DB-9-to-terminal adapter to
easily wire to EIA-485 systems. Port 2 includes the IRIG-B time-code signal input (see
Table 2.6). SEL offers fiber-optic transceivers or fiber-optic port options on Port 1
(SEL-2812 compatible optic) for connecting devices at distances over 15 meters (50
feet) where copper cable is not appropriate. The SEL-2800 family of transceivers
provides fiber-optic links between devices for electrical isolation and longer distances,
overcoming the limitations of electrical EIA-232 interfaces. Contact SEL for further
information on these products.
Front-Panel Jumpers
The front panels of the rack- and wall-mount configurations contain two jumpers.
Access to the jumpers is different for each configuration. Note that jumper number 1
(JMP1) is for factory use only and should not be installed.
CAUTION
The radio contains devices sensitive to Electrostatic Discharge (ESD).
Undetectable permanent damage can result if you do not use proper ESD
procedures. Ground yourself, your work surface, and this equipment before
removing any cover from this equipment. If your facility is not equipped to
work with these components, contact SEL about returning this device and
related SEL equipment for service.
Wall-Mount Chassis Jumper Access
From the front of the wall-mount configuration, remove the four screws located on the
sides of each corner. Use a Torx® T15 size screwdriver to remove the four screws.
Slide the back cover up and to the back of the unit to reveal the front jumpers. You do
not need to remove the ribbon cable to change jumpers. The jumpers are located to the
left of the USB connector.
Rack-Mount Chassis Jumper Access
From the front of the rack-mount configuration, remove the front panel by loosening
the six screws and removing the front panel. You will find the jumpers to the left of the
USB connection.
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SEL-3031 Instruction Manual
2.10
Installation
Connections
Password Jumper
The SEL-3031 contains two levels of passwords to access and set the radio. The
Level 1 password is for read access and the Level 2 password is for write access. The
default passwords that are shipped with the SEL-3031 are shown in Table 2.4. Do not
leave factory default passwords in the product. See PASSWORD Command on
page 4.19 for more information on setting passwords.
Table 2.4
Default Passwords
Access Level
Password
OTTER
TAIL
If necessary, you can disable passwords by installing a jumper. Refer to PASSWORD
Command on page 4.19 for information on properly disabling and changing
passwords.
Password Jumper Position
Jumper Installed (Password Disabled)
The jumper installed disables the passwords.
Jumper Removed (Default)
The SEL-3031 ships by default with passwords enabled.
SEL-3031 Instruction Manual
Jumper Position
JMP2
Password Enable/Disable
JMP2
Table 2.5
Date Code 20091009
Installation
Front-Panel Indicators
2.11
IRIG-B Time-Code Input
The SEL-3031 accepts a demodulated IRIG-B time signal to synchronize the internal
clock with an external time source. IRIG-B is available on Port 2 utilizing Pins 4 and 6
for time communications. The SEL-3031 supports the IRIG-B002 standardized time
format.
Table 2.6
Communications Cables for Time and Communications Connections
EIA-232 Serial Port
Connect to Device
SEL Cable No.
Port 2
IRIG-B BNC with time only
C256
SEL communications processors and computing platform data with IRIG-Ba
C387
IRIG-B only from DB-9 on SEL-2407®
C388
a. If connecting to an SEL communications processor you must turn the 5V_EN Global setting in
the SEL-3031 to OFF.
Front-Panel Indicators
The SEL-3031 has ten front-panel LED indicators. Table 2.7 further describes these
indicators that display the current status of the radio. The LINK LED indicates when the
SEL-3031 has properly connected to another SEL-3031. The SEC LED deals with the
SEL-3044 Encryption Card. See Appendix B: SEL-3044 Encryption Card for more
information on using this card.
Table 2.7
Front-Panel Status Indicator LEDs
Label
Color
Description
ENABLE
Green
All self tests are passing and unit is operational
ALARM
Red
ON: Self test failure detected
Flashing: Antenna failure
SEC
Green
ON: Encryption card detected and wireless data secured
Flashing: Encryption card detected and in RESET
OFF: No encryption card present or card failed
LINK
Green
Communications link established between master and remote radio
TX 1, 2, 3
Green
Serial data received by the port and transmitted out of the radio
RX 1, 2, 3
Green
Radio data received and transmitting out of serial port
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SEL-3031 Instruction Manual
2.12
Installation
Communications
Communications
Serial Ports
Table 2.8 shows the physical interfaces of the SEL-3031. Several options are provided
for Port 1 physical interfaces, including EIA-232, EIA-485, and fiber.
Table 2.8
SEL-3031 Port Description
Port
Communications Interface
Location
Port 1
EIA-232, EIA-485, or fiber
Rear (Port 1 has three ordering options)
Port 2
EIA-232
Rear
Port 3
EIA-232
Rear
USB
USB 1.1
Front (management port)
Serial (EIA-232 and EIA-485)
Use the EIA-232 port for communications distances of 15 meters (50 feet) in
low-noise environments. Use the optional EIA-485 Port 1 for communications of
1200 meters (4000 feet) maximum distance (to achieve this performance, ensure
proper line termination at the receiver).
If Port 1 is an EIA-485 connection, there are two types of connections that will work on
multidrop systems. Table 2.9 shows the standard pinout of a recommended four-wire
EIA-485 connection. If your system only works on a two-wire EIA-485 connection,
then you will need to connect Pins 1 and 3 together and Pins 2 and 4 together.
Figure 2.4 shows how to wire this configuration.
Port 1 EIA-485
9-Pin Male
D Subconnector
2-Wire EIA-485
Pin #
TX+
RX+
TX–
RX–
GND
Figure 2.4
2-Wire EIA-485
Tinned Wires
Pin #
Two-Wire EIA-485 Connections
SEL-3031 Instruction Manual
Date Code 20091009
Installation
Communications
2.13
Fiber-Optic Serial Port
Order the fiber-optic option for Port 1 for safety and long-distance communications up
to 4 kilometers (2.5 miles). The fiber-optic port is an SEL-2812-compatible device that
can connect directly to any SEL-2812-compatible device or SEL-2812 fiber optic
transceiver, using multimode fiber-optic cable with a core diameter of 50 to 200
micrometers. When working with this device, observe the following safety
precautions:
WARNING
➤
Do not look into the fiber (laser) ports/connectors.
➤
Do not look into the end of an optical cable connected to an optical
output.
➤
Do not perform any procedures or adjustments that this instruction
manual does not describe.
➤
During installation, maintenance, or testing of the optical ports, use
only test equipment qualified for Class 1 laser products.
➤
Incorporated components, such as transceivers and laser emitters, are
not user serviceable. Return units to SEL for repair or replacement.
Port Connector and Communications Cables
Figure 2.5 shows the EIA-232 and EIA-485 DB-9 connector pin numbering for the
SEL-3031.
Figure 2.5
EIA-232 and EIA-485 DB-9 Connector Pin Numbers
Table 2.9 shows the pin function of the serial ports.
Table 2.9
SEL-3031 Port Description (Sheet 1 of 2)
Pin
Port 1, Port 3
EIA-232
Port 2
EIA-232
Port 1
EIA-485
+5 Vdc
+5 Vdc
TX+
RXD
RXD
TX-
TXD
TXD
N/C
N/C
IRIG+
N/C
GND
GND
GND
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SEL-3031 Instruction Manual
2.14
Installation
Communications
Table 2.9
SEL-3031 Port Description (Sheet 2 of 2)
Pin
Port 1, Port 3
EIA-232
Port 2
EIA-232
Port 1
EIA-485
N/C
IRIG–
N/C
RTS
RTS
RX+
CTS
CTS
RX–
GND
GND
GND
Cleaning
Use care when cleaning the SEL-3031. Perform the following steps:
Step 1.
Use a mild soap or detergent solution and a damp cloth to clean the
chassis.
Step 2.
Be careful cleaning the front and rear panels because a permanent
plastic sheet covers each panel.
Do not use abrasive materials, polishing compounds, or harsh chemical solvents (such
as xylene or acetone) on any surface.
Cables
SEL-3031
9-Pin Male
Subminiature "D" Connector
PC Device
9-Pin Female
Subminiature "D" Connector
Pin
Func.
RXD
TXD
GND
RTS
CTS
Pin #
Pin #
ORANGE
RED
BLUE/SHIELD
GREEN
WHITE
Pin
Func.
RXD (OUT)
TXD (IN)
GND
RTS (IN)
CTS (OUT)
NOTE: For best results, limit the cable length to 15 meters (50 ft)
Figure 2.6
SEL Cable C245A: SEL-3031 to Computer
SEL-3031 Instruction Manual
Date Code 20091009
Installation
Communications
SEL-3031
9-Pin Male
Subminiature "D" Connector
Pin
Func.
RXD
TXD
GND
RTS
CTS
Pin #
ORANGE
RED
BLUE/SHIELD
GREEN
WHITE
2.15
DTE Device
No IRIG
9-Pin Male
Subminiature "D" Connector
Pin #
NOTE: For best results, limit the cable length to 15 meters (50 ft)
Figure 2.7
SEL Cable C285: SEL-3031 to DTE Device (SEL Relays)
SEL-3031
9-Pin Male
Subminiature "D" Connector
Pin #
SEL Communications Processor
With IRIG
9-Pin Male
Subminiature "D" Connector
Pin #
NOTE: For best results, limit the cable length to 15 meters (50 ft)
CAUTION: You must turn off the +5 V on Pin 1 of the SEL-3031 when
connecting to a communications processor.
Figure 2.8
Processor
SEL Cable C782/C387: SEL-3031 to SEL Communications
USB Interface
The SEL-3031 uses a standard USB Type-B interface for the management port. The
USB interface is used for settings management, initial radio installation, and reporting
data from long-term radio statistics. The management port may be used while the
SEL-3031 is in service without disrupting the radio communications. To use this
interface, plug a USB Type-B cable into the radio and plug the other end into your PC.
This will automatically prompt your PC to install a USB-to-serial driver that creates a
virtual serial port. The virtual serial port needs to be set to 9600 bps, 8 data bits, 1 stop
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SEL-3031 Instruction Manual
2.16
Installation
Communications
bit, and no parity to properly communicate with the SEL-3031. This virtual serial port
can now be used with ACSELERATOR QuickSet® SEL-5030 Software to help set and
view settings and obtain report information.
SEL-3031
Figure 2.9
USB Interface
SEL-3031 Instruction Manual
Date Code 20091009
Section 3
Job Done Examples
Overview
This section describes how to set up a serial port for two popular types of protocols:
MIRRORED BITS® and SEL Fast Messaging. This section assumes you have established
a radio link. If you are having problems setting up the radio link, refer to Section 2:
Installation and Section 5: Performance Monitoring, Testing, and Troubleshooting for
more information.
Each of the sections below describes how to set up the SEL-3031 serial port and the
end devices to make a proper connection.
High-Speed Teleprotection or Control With
MIRRORED BITS Communications
SEL-3031
SEL-3031
SEL-351
SEL-2100
SE L-250
Figure 3.1
SEL MIRRORED BITS Connection Example
The SEL-3031 can handle up to three connections of MIRRORED BITS simultaneously
over one radio link. For this example there are three MIRRORED BITS channels over the
SEL-3031. This example shows you how to set the radio and set different end devices
to properly use the radio as MIRRORED BITS links.
Date Code 20091009
SEL-3031 Instruction Manual
3.2
Job Done Examples
High-Speed Teleprotection or Control With MIRRORED BITS Communications
SEL-3031 MIRRORED BITS Settings
For Figure 3.2 we set Port 1 on both SEL-3031 devices as a MIRRORED BITS
connections.
On each radio set the following settings on the Port 1 settings.
Figure 3.2
SEL-3031 Port Settings for MIRRORED BITS Connection
The SEL-3031 makes it very simple to set a MIRRORED BITS connection. Only the
PROTO setting is needed to set the MIRRORED BITS port. The SEL-3031 without an
encryption card has fixed data rate of 19200 bps (8, N, 1) so no other setting changes
are needed.
On Port 1 on each radio install a C285 cable to the IED device. As an alternative, the
SEL-3031 can be ordered with a fiber-optic serial port that works with SEL-2812
transceivers. If you use the fiber-optic port on the SEL-3031 then the IED connection
needs to be an SEL-2812MR Fiber-Optic Transceiver.
SEL-3031 Instruction Manual
Date Code 20091009
Job Done Examples
High-Speed Teleprotection or Control With MIRRORED BITS Communications
3.3
SEL-351, SEL-311, and SEL-700 Series MIRRORED BITS Settings
The required settings for the SEL-351 are shown below. These settings are similar to
all of the SEL-351, SEL-311, and SEL-700 series of relays. To establish a
communication link via the radio, the most critical settings are PROTO, SPEED,
RTSCTS, RXID, and TXID.
=>SHO P 2 
Port 2
PROTO =
SPEED =
RXID =
RMB1PU=
RMB3PU=
RMB5PU=
RMB7PU=
Figure 3.3
MB8A
19200
RTSCTS=
TXID =
RMB1DO=
RMB3DO=
RMB5DO=
RMB7DO=
RBADPU= 60
RXDFLT=XXXXXXXX
RMB2PU- 1
RMB4PU- 1
RMB6PU- 1
RMB8PU- 1
CBADPU= 1000
RMB2DO=
RMB4DO=
RMB6DO=
RMB8DO=
SEL-351 Port Settings for MIRRORED BITS Connection
The SEL-3031 locks all three serial ports to 19200 bps (8, N, 1). You cannot change the
port speed. If the SEL-3044 Encryption Card is used then the data rate changes to 9600
bps (8, N, 1).
NOTE: If you are using the SEL-3044 Encryption Card, you
must change the connected devices’ RMBxPU and
RMBxDO settings = 2 to maintain the same level of
channel security as the standard MB8 protocol. This will
delay operation by one processing interval but will give
you a higher level of channel security.
Set PROTO equal to MB8x, where x equals A or B depending on which MIRRORED
BITS channel is used.
NOTE: This setting is slightly different in the SEL-2100 Logic
Processor, SEL-3530 Real-Time Automation Controller
(RTAC), and SEL-321 Relay.
Set SPEED equal to 19200 (or 9600 if the encryption card is installed).
Set RTSCTS (hardware handshaking) to N to disable that option.
Set the RXID equal to one and TXID equal to two at the master end. At the remote end,
set the RXID equal to two and the TXID equal to one. The relays use these addresses to
prevent a relay from receiving messages from a secondary MIRRORED BITS device if
the paths are accidentally connected wrong. The relay only receives messages sent by a
relay with the matching transmit address and vice versa.
To connect the relay to the radio, use an SEL-C285 cable (DB-9 male-to-DB-9 male
straight-through). If complete electrical isolation is desired between the radio and a
relay’s EIA-232 communications port, use the SEL-2812MR Fiber-Optic Transceiver
and fiber-optic cable to connect the relay to the radio.
Date Code 20091009
SEL-3031 Instruction Manual
3.4
Job Done Examples
High-Speed Teleprotection or Control With MIRRORED BITS Communications
SEL-400 Series MIRRORED BITS Settings
The required port settings for SEL-400 series relays are shown below. To establish
communication via the radio, the most critical settings are PROTO, MBT, SPEED,
STOPBIT, TXID, RXID, and TXMODE. All other settings are per the application
requirements.
Protocol Selection
PROTO
:= MBA
Communications Settings
MBT
:= N
SPEED
:=19200
STOPBIT := 2
Mirrored Bits Protocol Setting
TX_ID
TXMODE
RMB1DO
RMB3FL
RMB4PU
RMB5DO
RMB7FL
RMB8PU
Figure 3.4
:=
:=
:=
:=
:=
:=
:=
:=
RX_ID
MBNUM
RMB2FL
RMB3PU
RMB4DO
RMB6FL
RMB7PU
RMB8DO
:=
:=
:=
:=
:=
:=
:=
:=
RBADPU
RMB1FL
RMB2PU
RMB3DO
RMB5FL
RMB6PU
RMB7DO
:=
:=
:=
:=
:=
:=
:=
10
CBADPU
RMB1PU
RMB2DO
RMB4FL
RMB5PU
RMB6DO
RMB8FL
:=
:=
:=
:=
:=
:=
:=
20000
SEL-451 Port Settings for MIRRORED BITS Connection
Set PROTO equal to MBx, where x equals A or B depending on which MIRRORED BITS
channel is being used. Set MBT equal to N to disable that option.
Set SPEED equal to 19200 (or 9600 if the encryption card is installed).
Set STOPBIT equal to 2.
NOTE: If you are using the SEL-3044 Encryption Card, you
must change the connected devices’ RMBxPU and
RMBxDO settings = 2 to maintain the same level of
channel security as the standard MB8 protocol. This will
delay operation by one processing interval but will give
you a higher level of channel security.
Set the RXID equal to one and TXID equal to two at the master end. At the remote end,
set the RXID equal to two and the TXID equal to one. The relays use these addresses
so that the master relay only receives messages sent by a relay with the matching
transmit address and vice versa.
Set TXMODE equal to P (Paced).
To connect the relay to the radio, use an SEL-C285 cable (DB-9 male-to-DB-9 male
straight-through). If complete electrical isolation is desired between the radio and
antenna and the relay’s EIA-232 communications port, use the SEL-2812MR FiberOptic Transceiver and fiber-optic cable to connect the relay to the radio.
SEL-3031 Instruction Manual
Date Code 20091009
Job Done Examples
High-Speed Teleprotection or Control With MIRRORED BITS Communications
3.5
SEL-2505 and SEL-2506 Settings
The SEL-2505 and SEL-2506 use control (DIP) switches to set the MIRRORED BITS
connection. For easy installation order the SEL-2505 with the SEL-2812 fiber-optic
option (SEL-2505x6xXX). Use multimode C807 ST terminated fiber-optic cable to
directly connect the SEL-2505 to an SEL-3031 equipped with a fiber-optic option for
Port 1. Other transceiver models can be used as long as the corresponding SEL-2800
family transceiver is used on both ends.
Figure 3.5
SEL-2505 DIP Switch Settings for MIRRORED BITS Connection
Set the TX_ADD equal to one and set RX_ADD equal to two at the local end. At the
remote end, set the RXID equal to two and the TXID equal to one. The devices use
these addresses so that the master relay only receives messages sent by a relay with the
matching transmit address and vice versa.
Set Switch 9 and 10 equal to MB8/19200 for the Protocol/Baud setting. If the
SEL-3031 contains the SEL-3044 Encryption Card then the Protocol/Baud setting
must be MB8/9600.
NOTE: If you are using the SEL-3044 Encryption Card, you
must change the settings of the SEL-2505 output contact
mode dip switches to “SECURE” to maintain the same
level of channel security as the standard MB8 protocol.
This will delay operation by one processing interval but
will give you a higher level of channel security.
To connect the SEL-2505 to the radio, use a 62.5 µm multimode SEL-C807 fiber cable.
The SEL-C807 fiber cable comes with ST® connectors and your choice of zipcord or
waterproof heavy-duty jacketed fibers.
Date Code 20091009
SEL-3031 Instruction Manual
3.6
Job Done Examples
Using an SEL Information Processor to Collect Relay Status and Measurements
Initial Checkout
The easiest way to verify that the relays are communicating is to use the TARget
command, as shown below.
=>TAR ROKA 
LBOKB
CBADB
RBADB
Figure 3.6
ROKB
LBOKA
CBADA
RBADA
ROKA
TAR ROKA Command From an SEL-351
The results shown here is from an SEL-351 Relay. ROKA is asserted, meaning that the
two relays have established MIRRORED BITS communication. For longer-term channel
tests, use the COM report command available in the relay and suggestions described in
Monitoring Radio Performance on page 5.1.
Using an SEL Information Processor to
Collect Relay Status and Measurements
SEL information processors and computing platforms easily collect relay status and
measurement information. SEL information processors include the SEL-3530 RealTime Automation Processor, SEL-2032, SEL-2030, and SEL-2020 Communications
Processors, and ruggedized SEL computers configured as intelligent servers or
gateways. An SEL information processor can be used as data collection point, port
switch, and control operations all through one serial port. The SEL-3031 serial
interface allows you to obtain all of this relay information from remote IEDs using the
wireless connection. The example below will show you how to set the radio, relays,
and communications processors to allow the Fast Messaging protocol to operate over a
wireless connection.
SEL-3031
SEL-3031
SEL-351
SEL-2032
SEL-451
Figure 3.7
SEL-3031 Linking Information Processors to Relays
SEL-3031 Instruction Manual
Date Code 20091009
Job Done Examples
Using an SEL Information Processor to Collect Relay Status and Measurements
3.7
SEL-3031 Settings
The SEL-3031 requires very few inputs for setting up the serial port to the correct
protocol. Figure 3.8 shows the settings needed for Port 1.
Figure 3.8
SEL-3031 Port 1 Settings for Fast Messaging
The PROTO setting must be set to Standard. The Standard setting is the default for
use on any byte-oriented protocol. The Standard setting is used with connections such
as DNP3, SEL ASCII, Compressed ASCII, Fast Operate, Fast SER, and SEL Fast
Meter with Configuration.
The CTS1 setting should be set to Deasserted. This will deassert the control lines on
the SEL-3031. Some protocols in devices require the control line to be in a high or low
state to permit proper communication. For example, with DNP, some remote devices
will not reply back to the master until the control line is deasserted. If the control line is
asserted the DNP device is told to wait. Again, this setting is based upon how the
vendor implemented flow control in the devices. For most all SEL products this setting
should always be set to Deasserted.
On Port 1 on each radio install an SEL-C285 cable to the IED device. As an alternative,
the SEL-3031 can be ordered with a fiber-optic serial port that works with the
SEL-2812 transceivers. If you use the fiber port on the SEL-3031 connection at the
IED needs to be an SEL-2812MR transceiver or compatible built-in port.
Date Code 20091009
SEL-3031 Instruction Manual
3.8
Job Done Examples
Using an SEL Information Processor to Collect Relay Status and Measurements
SEL-300 Series Settings
The required settings for the SEL-351 are shown below. These settings are similar to
all of the SEL-351, SEL-311, and SEL-700 family of relays. To establish a
communication link via the radio, the most critical settings are PROTO, SPEED, BITS,
PARITY, STOP, and RTSCTS.
=>>SHO P 2 
Port 2
PROTO = SEL
SPEED = 19200
T_OUT = 10
BITS
AUTO
= 8
= Y
PARITY= N
RTSCTS= N
STOP = 1
FASTOP= Y
=>>
Figure 3.9
SEL-351 Port Settings for Fast Messaging
Set AUTO = Y if you want the relay to send automatic messages to indicate specific
conditions.
Set FASTOP = Y if you want the communication processor to issue control commands
to the relay.
SEL-2032/SEL-2030 Settings
The following steps demonstrate on how to set SEL-2032 to initially connect and
configure an SEL-351 relay.
Step 1.
Use the SEL-C285 cable to connect one of the SEL-2032 ports; this
example uses Port 2 to Port 1 of the SEL-3031.
Step 2.
Enter Access Level 2 on the SEL-2032 and issue the SET P 2
command to configure Port 2. The SEL-2032 prompts for the type of
device connected to the port.
Step 3.
a.
b.
Enter S for the SEL IED.
Enter Y to autoconfigure the port.
c.
Press the  key to confirm the configuration prompts.
The SEL-2032 establishes communication with the relay;
determines the type of relay, relay ID, and communication
data rate; and determines if the relay is capable of Fast Meter.
d.
Enter Y to save port configuration changes at the final
prompt.
Issue the AUTO 2 command to see what Fast Message features are
supported by the SEL-351S. Figure 3.10 shows an example output for
the AUTO command.
SEL-3031 Instruction Manual
Date Code 20091009
Job Done Examples
Using an SEL Information Processor to Collect Relay Status and Measurements
3.9
*>>AUTO 2 
FID: FID=SEL-351S-7-R106-V0-Z003003-D20010110
DEVICE ID: FEEDER 1
BAUD RATE: 19200
OPERATE SUPPORT: Binary (1 Breakers, 16 Remote Bits S-C-P)
LEVEL 1 PASSWORD: OTTER
COMMANDS SUPPORTED:
B 20METER
B 20DEMAND
B 20TARGET
A 20HISTORY
A 20STATUS
A 20EVENT
A 20EVENTS
A 20EVENTL
*>>
Figure 3.10
Example AUTO Command Output
The AUTO command verifies initial configuration is set up. Refer to the SEL-2032
Instruction Manual for more information on setting up Fast Messaging.
Date Code 20091009
SEL-3031 Instruction Manual
This page intentionally left blank
Section 4
Settings and Commands
PC Software
QuickSet® SEL-5030 Software is a powerful settings and HMI tool
that aids in setting, applying, and using the SEL-3031 and other SEL devices. This
section describes how to get started with your SEL-3031 and ACSELERATOR QuickSet.
ACSELERATOR
Table 4.1
ACSELERATOR
QuickSet SEL-5030 Software
Terminal
Provides a direct connection to the SEL device. Use this communications method to interface directly with the device.
Rules-Based Settings
Editor
Provides online or offline device settings that include
interdependency checks. Use this feature to create and
manage settings for multiple devices in a database.
Settings Database
Management
Provides a database to manage multiple device settings.
Help
Provides general ACSELERATOR QuickSet and device-specific ACSELERATOR QuickSet context help.
Setup
Follow the steps outlined in Section 2: Installation to prepare the SEL-3031 for use.
Perform the following steps to initiate communications:
Step 1.
Apply power to the SEL-3031.
Step 2.
Connect a USB Type-B cable (SEL-C664) between the management
port of the SEL-3031 and the PC.
Step 3.
Follow the on screen instructions and install the USB driver if not
already installed.
Step 4.
Start ACSELERATOR QuickSet software.
Date Code 20091009
SEL-3031 Instruction Manual
4.2
Settings and Commands
PC Software
Communications
ACSELERATOR
QuickSet uses the device USB management port to communicate with
the SEL-3031. Perform the following steps to configure ACSELERATOR QuickSet to
communicate effectively with the device.
Step 1.
Figure 4.1
Click Communications from the ACSELERATOR QuickSet main
menu bar, as shown in Figure 4.1.
Communications Menu
Step 2.
Select Parameters to display the screen shown in Figure 4.2.
SEL-3031 Instruction Manual
Date Code 20091009
Settings and Commands
PC Software
Figure 4.2
4.3
Serial Port Communications Parameters
Step 3.
Configure the PC port to Data Speed 9600, Data Bits 8, Stop Bits 1,
and Parity None.
Step 4.
Configure ACSELERATOR QuickSet to match the SEL-3031 default
settings by entering the Access Level 1 and Access Level 2 passwords
in their respective text boxes.
Step 5.
Exit the menus by clicking OK when finished.
Terminal Window
Select Communications > Terminal on the ACSELERATOR QuickSet main menu bar
to open the terminal window (shown in Figure 4.3).
Date Code 20091009
SEL-3031 Instruction Manual
4.4
Settings and Commands
PC Software
Figure 4.3
Terminal Window Menu
The terminal window is an ASCII interface for the device that supports a basic terminal
emulation. Open the terminal window by clicking Communications > Terminal or by
typing . Verify proper communications with the device by opening a
terminal window, pressing  a few times, and verifying that a prompt is
received. If a prompt is not received, verify proper setup.
Drivers and Part Number
After clicking Communications > Terminal, access the device at Access Level 1.
Issue the ID command to receive an identification report, as shown in Figure 4.4.
=>>ID 
"FID=SEL-3031-R100-V0-Z001001-D20091009","08DC"
"BFID=SLBT-3031-R100-V0-Z001000-D20091009","0965"
"CID=25DC8978","034B"
"DEVID=STATION_A","04DB"
"DEVCODE=72","0310"
"PARTNO=30310W01XXX","0538"
"CONFIG=00000000","03E3"
"SPECIAL=0”,”02DE”
=>>
Figure 4.4
Device Response to ID Command
Locate and record the Z-number (Z001001) in the FID string. The first portion of the
Z-number (Z001...) determines the ACSELERATOR QuickSet device settings driver
version when you are creating or editing device settings files. The Device Editor driver
will be discussed in more detail in Device Editor (Editor Mode). Compare the part
number (PARTNO = 3031XXXXXXX) with the Model Option Table (MOT) to ensure
correct device configuration.
SEL-3031 Instruction Manual
Date Code 20091009
Settings and Commands
Settings
4.5
Settings
Settings Database Management and Drivers
ACSELERATOR
ACSELERATOR
QuickSet uses a database on the PC to save device settings.
QuickSet contains sets of all settings files for each device specified in
the Database Manager. Choose appropriate storage backup methods and a secure
location for storing database files.
Active Database
Change the active database to the one requiring modification by selecting File > Active
Database on the main menu bar.
Database Manager
Select File > Database Manager on the main menu bar to create new databases and
manage records within existing databases.
Settings Database
Step 1.
Open the Database Manager to access the database. Click File >
Database Manager. A dialog box will appear. The default file
already configured in ACSELERATOR QuickSet is Relay.rdb. This
database contains example settings files for the SEL products with
which you can use ACSELERATOR QuickSet.
Step 2.
Enter descriptions of the database for each device in the Database
Description and Settings Description dialog boxes.
Step 3.
Enter special operating characteristics that describe the device
settings in the Settings Description dialog box. These can include
radio location and communications settings.
Step 4.
Highlight one of the devices listed in Settings in Database and click
Copy to create a new collection of settings. ACSELERATOR QuickSet
will prompt for a new name. Be sure to enter a new description in the
Settings Description.
Copy/Move Settings Between Databases
Step 1.
Select Copy/Move Settings Between Databases to create multiple
databases with the Database Manager.
These databases are useful for grouping similar protection schemes or
geographic areas.
Step 2.
Date Code 20091009
Click Open B to open a device database.
SEL-3031 Instruction Manual
4.6
Settings and Commands
Settings
Step 3.
Type the filename and click Open.
a.
Highlight the device or setting in the A database.
b.
Step 4.
Select Copy or Move, and click the > button to create a new
device or setting in the B database.
Reverse this process to take devices from the B database to the A
database. Copy creates an identical device that appears in both
databases. Move removes the device from one database and places
the device in another database.
Create a New Database/Copy an Existing Database
To create a new database, perform the following:
Step 1.
Open File > Database Manager and click Create New Database.
QuickSet will prompt you for a file name.
ACSELERATOR
Step 2.
Type the new database name (and location if it differs from the
previous database location), and click Save. ACSELERATOR QuickSet
displays the message Settings [path and file name] was
successfully created.
Step 3.
Click OK.
To copy an existing database of devices to a new database, perform the following:
Step 1.
Open File > Database Manager and click Copy/Move Settings
Between Databases in the Database Manager dialog box.
ACSELERATOR QuickSet will open the last active database and assign
it as Database A.
Step 2.
Click Open B. ACSELERATOR QuickSet will prompt you for a file
location. Type the new database name, click Open, and click Yes.
The program will then create an empty database. Load devices into
the new database as shown in Copy/Move Settings Between
Databases.
Settings
ACSELERATOR
QuickSet allows you to create settings for one or more SEL-3031
devices. Store existing device settings downloaded from the SEL-3031 by creating a
library of settings, then modify and upload these settings from the library to an
SEL-3031. ACSELERATOR QuickSet makes setting the device easy and efficient and
provides rules-based settings checks, commissioning, and help.
Settings Editor
The Settings Editor shows device settings in easy-to-understand categories. and makes
setting the device simple and efficient. Settings are grouped logically, and settings that
are not used in the selected group are dimmed (grayed) in the ACSELERATOR QuickSet
SEL-3031 Instruction Manual
Date Code 20091009
Settings and Commands
Settings
4.7
menus. ACSELERATOR QuickSet shows all of the settings categories in the settings tree
view. The settings tree view remains constant whether settings categories are enabled
or disabled. However, any disabled settings are dimmed when accessed by clicking an
item in the tree view.
File Menu
ACSELERATOR
QuickSet uses a database to store and manage SEL device settings.
Each unique device has its own record of settings. Use the File menu to open an
existing record, create and open a new record, read device settings, create an open a
new record, or convert and open an existing record. This record can be opened in the
Settings Editor as a Setting Form (template) or in Editor Mode.
File > New
Select File > New to command new settings files. ACSELERATOR QuickSet will create
the new settings files from a driver that you specify in the Settings Editor Selection
dialog box. ACSELERATOR QuickSet uses the Z-number in the FID string to create a
particular version of settings. To get started, select File > New from the main menu bar,
then select SEL-3031 and 001 from the Settings Editor Selection window as shown in
Figure 4.5.
Figure 4.5
Selection of Drivers
After you select the device model and settings driver, ACSELERATOR QuickSet will
present the Device Part Number dialog box. Use this dialog box to configure the
Device Editor to produce settings for your device with options determined by the part
number, as shown in Figure 4.6. Click OK when finished.
Date Code 20091009
SEL-3031 Instruction Manual
4.8
Settings and Commands
Settings
Figure 4.6
Update Part Number
Figure 4.6 shows the Settings Editor screen. View the bottom of the Device Editor
window to verify the Settings Driver number. Compare the ACSELERATOR QuickSet
Settings Driver number and the first portion of the Z-number in the FID string (this can
be found by selecting Tools > HMI > HMI > Status). These numbers must match.
ACSELERATOR QuickSet uses the first portion of the Z-number to determine which
Device Editor to display.
Figure 4.7
New Setting Screen
File > Open
Select File > Open to open an existing device from the active database folder.
ACSELERATOR QuickSet prompts for a device to load into the Device Editor.
SEL-3031 Instruction Manual
Date Code 20091009
Settings and Commands
Settings
4.9
File > Read
Select File > Read to cause ACSELERATOR QuickSet to read the device settings from a
connected device. As ACSELERATOR QuickSet reads the device, a Transfer Status
window will appear. ACSELERATOR QuickSet uses serial protocols to read settings
from SEL devices.
Device Editor (Editor Mode)
Use the Device Editor (Editor Mode) to enter and display settings. Make sure that the
firmware in your radio matches the ACSELERATOR QuickSet settings driver; the driver
version number in the lower left corner of the Device Editor should be equal to the first
three digits following “Z” in the radio Firmware Identification (FID) string. Use the ID
or STA command to easily view the FID string.
Entering Settings
Step 1.
Click + in the Settings Tree View to expand and select the settings
you want to change.
Step 2.
Click Tab to navigate through the settings, or click on a setting.
Step 3.
Right-click your mouse in the setting dialog box and select Previous
Value to restore the previous value for a setting.
Step 4.
Right-click your mouse in the setting dialog box and select Default
Value to restore the factory default setting value.
If you enter a setting that is out of range or has an error, ACSELERATOR QuickSet will
show the error at the bottom of the Settings Editor. Double-click the error listing to go
to the setting and enter a valid input.
Table 4.2
Device Editor Menus
Menus
Description
<< >>
Moves from one category to the next.
Merge
Merges the open record with another record.
Compare
Compares the open record with another record.
Search
Searches for a particular setting.
Part Number
Displays part number.
Sending Settings
Select Save, Send, or Print Device Settings from the File menu of the Device Editor
once settings are entered into ACSELERATOR QuickSet. This will ensure that your
settings are not lost.
Date Code 20091009
SEL-3031 Instruction Manual
4.10
Settings and Commands
Settings
Options—Part Number
Select Edit > Part Number to change the part number if it was entered incorrectly
during an earlier step.
Text Files
Select Tools > Settings > Import or Tools > Settings > Export on the Device Editor
(Editor Mode) menu bar to import or export settings to or from a text file. Use this
feature to create a small file that can be easily stored or sent electronically.
Meter and Control
Human Machine Interface (HMI)
Select Tools > HMI > HMI to bring up the screen shown in Figure 4.8. The HMI tree
view shows the functions that are available from the HMI. The Meter & Control
window is an easily-organized view of real-time data and information stored in the
SEL-3031.
Figure 4.8
Status Screen
The Status screen provides a real-time view of the radio to which it is connected. A
user can see the current status of the SEL-3031 and verify any alarm conditions.
Select the Radio Status screen to view the radio statistics. Included is the RSSI value
that displays the current strength of the receive signal. This will aid in properly aiming
the antenna for maximum signal strength. The “Availability” displays the overall
SEL-3031 Instruction Manual
Date Code 20091009
Settings and Commands
Settings
4.11
channel availability of the link. The “Zone Availability” gives the availability of each
of the 10 zones. See Monitoring Radio Performance on page 5.1 for more information
on optimizing the radio link.
Figure 4.9
Radio Strength and Channel Availability
The SER window displays the same information as the ASCII SER commands. The
Control Window allows you to clear the SER, synchronize with IRIG, and set the time
and date.
Global Settings
Under the Global group settings category, set the device and host identifiers settings.
The SEL-3031 displays the Device and Host Identifier strings at the top of the serial
port commands responses, identifying messages from individual devices. Enter up to
30 characters, including capital letters A–Z, numbers 0–9, periods, and dashes.
Table 4.3 shows the device and host identifier settings.
Table 4.3
Global Settings
Setting Prompt
Setting Range
Setting Name := Factory Default
Device Identifier
30 characters
DID
Host Identifier
12 characters (no spaces) HID
Date Format
MDY, YMD, DMY
DATE_F := MDY
Port Power
ON, OFF
5V_EN := OFF
Date Code 20091009
SEL-3031 Instruction Manual
4.12
Settings and Commands
Settings
Date_F allows you to change the device date presentation format to either North
American standard (Month/Day/Year), Engineering standard (Year/Month/Day), or
European standard (Day/Month/Year).
5V_EN enables the +5 V on Pin 1 on every EIA-232 DB-9 serial port. When this
setting is on, all three ports will have +5 Vdc on Pin 1. The entire load on the +5 V
must not exceed 500 mA.
Radio Settings
Table 4.4
Radio Settings
Settings Prompt
Settings Range
Setting Name := Factory Default
Operation Mode
MASTER, REMOTE
MODE := REMOTE
Network Identification
1–10
NID := 1
Skip Zones
1–16, NONE
SKIP := NONE
Transmit Power
20–30 dB
TXPWR := 30
Encryption Passphrase
8–80 Characters
KEY := NONE
MODE sets the operating mode of the radio. The radio is set to REMOTE by default.
One radio must be set to REMOTE and the other set to MASTER.
NID sets the network address of the radio network. Both radios must be set to the same
network address in order for them to link and communicate. If more than one radio
network is used in the same proximity then make sure that the NID is set to a different
value and SKIP the first six zones on one of the radio networks. To avoid certain radio
frequencies, see setting SKIP.
SKIP determines which of the 16 frequency zones to skip in the SEL-3031 hopping
sequence. The SEL-3031 will only operate on 10 of the 16 zones. The default setting is
set to NONE. The SEL-3031 must use a minimum of 10 zones, so a setting of NONE
will force the radio automatically SKIP zones 11–16. The SKIP setting can contain up
to six comma-delimited zones from Table 4.5. Each zone entered into this setting will
set the SEL-3031 to skip that particular zone in the hopping table. This setting can help
increase the availability of the radio and avoid areas of interference.
Table 4.5
SKIP Zone Frequencies
Zone 1
Zone 2
Zone 3
Zone 4
Zone 5
Zone 6
Zone 7
Zone 8
902.6–
903.8
904.1–
905.3
905.6–
906.8
907.1–
908.3
909.2–
910.4
910.7–
911.9
912.2–
913.4
913.7–
914.9
Zone 9
Zone 10
Zone 11
Zone 12
Zone 13
Zone 14
Zone 15
Zone 16
915.2–
916.4
916.7–
917.9
918.2–
919.4
919.7–
920.9
921.2–
923.0
923.3–
924.5
924.8–
926.0
926.3–
927.5
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Date Code 20091009
Settings and Commands
Settings
4.13
The SEL-3031 has radio statistics to help set the SKIP setting if the availability of the
radio is less than desired. In order to determine which frequency zones to skip, issue a
RADio C command and operate the radios over a period of time. You will get better
availability results the longer you let the radio run linked. Issue the RADio command
to view the availability of each frequency zone. In the radio report identify the
frequency zones with the lowest availability and enter these zones via the SKIP setting.
Issue another RADio C command and let the SEL-3031 run for another day and verify
that the availability has increased. See Section 5: Performance Monitoring, Testing,
and Troubleshooting for more information on how to use the SKIP setting.
TXPWR sets the transmitted power out of the SEL-3031. The available range is
20–30 dBm (1 W). The radio transmit power is set in 1 dBm increments. The radio is
shipped with a factory default setting of 30 dBm. This setting must be used to reduce
the power output of the antenna if the total EIRP exceeds 36 dBm. See Transmitted
Signal on page 2.3 for more information on how to calculate and configure the
maximum power output.
In the USA and Canada, the FCC and IC regulate the amount of power a radio can
radiate with EIRP (Effective Isotropically Radiated Power output). The EIRP limit of
radiation is 36 dBm. This value includes the power of the transmitter, cable losses, and
antenna gain. If you exceed the allowed 36 dBm you must lower the transmitted power
of the radio using the TXPWR setting, and then measure the actual power.
See Transmitted Signal on page 2.3 for more information on determining and properly
setting the TXPWR setting.
The KEY setting is only available if the product contains an SEL-3044 Encryption
Card. The KEY setting is a passphrase that is used to generate an encryption key. The
acceptable range is from 8 to 80 characters. All printable characters are accepted. If
you have an encryption card, this value must be set in order to enable the secure
wireless connection. When the SEL-3031 is shipped with the encryption card, or added
in the field, it is by default shipped in reset mode. The SEC LED on the front panel will
flash green to show this state. The KEY setting must be set in order to activate the
encryption card. The SEL-3031 radios will not transmit data until the SEL-3044 is set
properly. The SEC LED will illuminate green when the KEY setting is correctly set. The
green SEC LED indicates data being set through the radio link is secured. Once the KEY
setting is configured the setting can never be read back, viewed, or saved with
ACSELERATOR QuickSet software.
To encrypt a radio link, both radios must contain an SEL-3044 and the KEY settings
must be set to the same value. See Appendix B: SEL-3044 Encryption Card for more
information on the SEL-3044 Encryption Card.
Port Settings
The SEL-3031 settings allow you to configure the parameters for each of the three
communications ports. The SEL-3031 comes standard with three EIA-232 ports. Port 1
can be ordered as an EIA-232, EIA-485, or serial fiber-optic port. Table 4.6 shows the
port settings ranges and default settings for Port 1, Port 2, and Port 3.
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4.14
Settings and Commands
Settings
The protocol setting defines the type of data that will be passing through the serial port.
This setting automatically sets parameters in the radio to optimize best performance.
Any of the three serial ports may be set to any of the protocols. Ports 2 and 3 are always
EIA-232 ports. For example, you have three ports of MIRRORED BITS® (MB8), or any
combination or MB8, MODBUS, and STANDARD.
Table 4.6
Port Xa Settings
Settings Prompt
Settings Range
Setting Name := Factory Default
Protocol
STANDARD, MB8, MODBUS
PROTO := STANDARD
CTS State
Asserted, Deasserted
CTS := DEASSERTED
Echo
ON, OFF
ECHO := OFF
a. X = 1, 2, or 3.
PROTO sets the intended protocol used to communicate through the radio ports. Set to
STANDARD for all byte-oriented protocols such as DNP3, ASCII, Synchrophasors, or
file transfer. This is the default setting for PROTO and should be used unless you are
using MIRRORED BITS or MODBUS. Set PROTO to MB8 to work with SEL
MIRRORED BITS devices. The SEL-3031 only supports MB8 MIRRORED BITS protocol.
See Section 3: Job Done Examples for more information on setting up MIRRORED
BITS. Set PROTO to MODBUS when used with Modbus protocol. When PROTO is set
to either STANDARD or MODBUS the radio will not perform the 32-bit CRC check
on the received data. If you do not have a good link with high availability you will see
noise on the channel. These errors are better handled by the communications protocols
to ignore this data rather than have conflicting retry messages between the radio and
communications protocols. If PROTO is set to MB8, the 32-bit CRC will remove any
data that does not pass the CRC. The data rate on all three ports is fixed at 19200 bps. If
the unit has an SEL-3044 Encryption Card then the data rate is fixed at 9600 bps.
NOTE: If you are using the SEL-3044 Encryption Card and
PROTO is equal to MB8 you must change the connected
devices’ RMBxPU and RMBxDO settings = 2 to maintain
the same level of channel security as standard MB8
protocol. This will delay operation by one processing
interval but will give you a higher level of channel
security.
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Settings and Commands
Commands
Table 4.7
4.15
Fixed Port Settings
Port Setting
Fixed Port Settings
Fixed Port Settings With
SEL-3044 Card
Data Rate
19200 bps
9600 bps
Data Bits
Parity
None
None
Stop Bit
RTS/CTS Flow Control
Off
Off
The CTS setting is used to set the state of the CTS (Pin 7) line on each of the ports. In
most cases this setting should be set to deasserted. Most SEL devices require CTS
deasserted in order for them to respond to DNP requests. The SEL-3031 does not
support hardware flow control. It will only assert or deassert the CTS line to signal
connected equipment to continue communication.
The ECHO setting is only enabled when Port 1 is ordered as an EIA-485 device. This
setting is used to set up a two-wire versus four-wire EIA-485 connection. The default
ECHO setting is set to ON which works with four-wire EIA-485 applications. For twowire operation, the ECHO setting must be set to OFF, and Pins 1 and 7 and Pins 2 and
8 must be connected together (see Table 2.9).
Commands
Access Levels
Issue commands to an SEL-3031 serial port to view or change device settings or
retrieve information. For security, these commands are available on different passwordprotected access levels. Throughout this section each command description indicates
the access level at which the command is available. There are three access levels in the
device, offering varying levels of control.
➤
Access Level 0 commands are the lowest security level. Access
Level 0 commands support minimum identification.
➤
Access Level 1 commands are for reviewing information only (e.g.,
status) and not for making any changes.
➤
Access Level 2 commands are for changing device settings.
Go to Communications on page 4.2 for instructions on connecting to the SEL-3031
through the USB interface.
The virtual serial interface created from the USB port must be set to 9600 bps, 8 data
bits, 1 stop bit, and no parity to communicate to the SEL-3031.
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4.16
Settings and Commands
Commands
Access Level 0
Once serial port communication is established with the SEL-3031, press  and
you should see the following prompt:
NOTE: If you don't get the = prompt, then refer back to
Communications on page 4.2 to properly connect to the
SEL-3031.
This is referred to as Access Level 0. Only a few commands are available at this level.
One is the ACC command.
Enter ACC at the Access Level 0 prompt:
=ACC 
The ACC command takes the SEL-3031 to Access Level 1.
Access Level 1
When the SEL-3031 is in Access Level 1, the device sends the following prompt:
=>
From Access Level 1, use the 2AC command to go to Access Level 2.
Enter 2AC at the Access Level 2 prompt:
=>2AC 
Access Level 2
When the device is in Access Level 2, the SEL-3031 sends the following prompt:
=>>
All of the Access Level 1 commands are available in Access Level 2. The SEL-3031
responds with Invalid Access Level when a command is entered from an access
level lower than the required level for the command. The device responds with
Invalid Command to commands that are not available or are entered incorrectly.
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Settings and Commands
Commands
4.17
ASCII Commands
The SEL-3031 includes ASCII commands and settings to properly set the SEL-3031.
ACSELERATOR QuickSet software provides a user-friendly interface to set the
SEL-3031, but either interface can be used to set the product.
DATE Command
Use the DATE command to view and set the date, as shown in Table 4.8.
Table 4.8
DATE Command
Command
Description
Access Level
DAT
Displays the internal clock date.
DAT date
Sets the internal clock date (DATE_F set to MDY,
YMD, or DMY).
The device can overwrite the date entered with other time sources, such as IRIG. Enter
DATE to set the internal clock date. Separate the month, day, and year parameters with
slashes. Set the year in four-digit format (for dates 2000–2099).
IDENTIFICATION Command
The ID command extracts device identification codes, as shown in Table 4.9. The ID
command is only available as a compressed (comma-delimited) command.
Table 4.9
ID Command
Command
Description
Access Level
ID
Returns a list of device identification codes, as shown
below:
=ID 
"FID=SEL-3031-R100-V0-Z001001-D20091009","08D2"
"BFID=SLBT-3031-X307-V0-Z000000-D20091009","0974"
"CID=2B957901","0330"
"DEVID=RADIO 1","03D9"
"DEVCODE=72","0310"
"PARTNO=30310W01XXX","0538"
"CONFIG=00000000","03E3"
"SPECIAL=0","02DE"
IRIG Command
Use the IRI command to read the demodulated IRIG-B time code at the management
port or IRIG-B input, and to force immediate synchronization of the internal clock with
the IRIG-B signal (see Table 4.10). If an IRIG-B signal is present at serial Port 2, the
device will automatically synchronize the internal clock with the IRIG-B signal in a
time period not exceeding one minute. It is not necessary to issue the IRI command for
this automatic synchronization. If you are testing the device and do not want to wait for
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4.18
Settings and Commands
Commands
the one-minute synchronization, issue the IRI command to force the device to
synchronize immediately with the IRIG-B signal. You can also use the IRI command
to determine whether the device is properly reading the IRIG-B signal.
Table 4.10
IRIG Command
Command
Description
Access Level
IRI
Forces synchronization of internal control clock to
IRIG-B time-code input.
To force the device to synchronize to IRIG-B, enter the following command:
=>IRI 
If the device successfully synchronizes to IRIG-B, it will send the following header
and access level prompt:
SEL-3031
DEVICE
=>
Date: 04/12/2005
Time: 15:41:29
If no IRIG-B code is present at the serial port input, or if the code cannot be read
successfully, the device will respond as follows:
IRIG-B DATA ERROR
=>
L_D Command
Use L_D to load firmware, as shown in Table 4.11. See Appendix A: Firmware and
Manual Versions for information on firmware and instruction manual changes.
Table 4.11
L_D Command
Command
Description
Access Level
L_D
Downloads firmware to the device.
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Settings and Commands
Commands
4.19
PASSWORD Command
Use PAS to view or change existing passwords, as shown in Table 4.12 and Table 4.13.
Table 4.12
PAS Command
Command
Description
Access Level
PAS level new passwords
Sets a password for new password for
Access Level level.a
a. Parameter level represents the device Access Levels 1 or 2.
WARNING
This device is shipped with default passwords. Default passwords should be
changed to private passwords at installation. Failure to change each default
password to a private password may allow unauthorized access. SEL shall not
be responsible for any damage resulting from unauthorized access.
Table 4.13
Factory Default Passwords
Access Level
Password
OTTER
TAIL
To change the password for Access Level 2 from the default password TAIL to new
password Ot3579, enter the following:
=>>PAS 2 
Old PW:? ****  (Enter TAIL)
New PW:? *******  (Enter Ot3579)
Confirm PW:? *******  (Enter Ot3579)
Password Changed
CAUTION: This password can be strengthened. Strong passwords do not include a name, date,
acronym, or word. They consist of the maximum allowable characters, with at least one special
character, number, lower-case letter, and upper-case letter. A change in password is
recommended.
=>>
Similarly, use PAS 1 to change Access Level 1 passwords. Passwords can contain as
many as 12 characters. Uppercase and lowercase letters are considered different
characters. Strong passwords have 12 characters with at least one special character or
digit and mixed-case sensitivity, and do not form a name, date, acronym, or word.
Passwords formed in this manner are less susceptible to password guessing and
automated attacks. Examples of valid, distinct, strong passwords are shown below.
➤
#Ot3579!ljd7
➤
$A24.68&,mvj
➤
(Ih2dcs)36dn
➤
*4u-Iwg+?lf-
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4.20
Settings and Commands
Commands
Table 4.14
Valid Password Characters
Alpha
ABCDEFGHIJKLMNOPQRSTUVWXYZ
abcdefghijklmnopqrstuvwxyz
Numeric
0123456789
Special
!“#$%&‘()*+,-./:;,=.?@[\]^_‘{|}~
If you forget your password, you can reissue a new password by following these steps:
Step 1.
In accordance with the appropriate safety regulations, turn off the
device, and see Front-Panel Jumpers on page 2.9 for instructions on
accessing the jumpers.
Step 2.
Go to Table 2.5 to locate Jumper 2 and short the jumper as shown.
Step 3.
Go to the appropriate access level and issue PAS x (x = 1 or 2) to
enter a new password.
Step 4.
In accordance with the appropriate safety regulations, turn off the
device and remove Jumper 2 to activate the password function.
Step 5.
Replace the front-panel cover and turn on the device.
QUIT Command
Use QUIT to revert to Access Level 0 from either Access Level 1 or
Access Level 2, as shown in Table 4.15.
Table 4.15
QUIT Command
Command
Description
Access Level
QUI
Sends you to Access Level 0.
Access Level 0 is the lowest access level; your SEL-3031 does not require a password
check to descend to this level (or to remain at this level).
RADIO Command
The RAD command is for viewing statistics and data on the radio link, as shown in
Table 4.16. The RAD command provides two important types of information.
➤
RSSI = Receive Signal Strength Indicator. The RSSI shows the
current strength of the receive signal from the radio. This command
helps you to refine antenna positioning. The RSSI is reported in dBm
and updates every time the RAD command is issued. The RSSI is
calculated from the latest 50 frequency hops averaged over time.
RSSI is very useful for optimizing performance on directional
antennas and monitoring signal strength.
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Settings and Commands
Commands
➤
Table 4.16
4.21
AVAILABILITY. The radio automatically calculates the availability
of the overall radio link and the availability of each hopping
frequency. The availability is calculated by measuring the number of
good radio frames received per the number of radio frames expected.
The Overall is the tallied availability of each of the frequency zones
used in the current hopping table. This number is valuable for
measuring overall radio availability. The SEL-3031 also calculates
the availability of each zone used in the current hopping table. The
radio zones displayed in the RAD command are based on the SKIP
setting. See Table 4.5 for more information on Skip Zones. See
Section 5: Performance Monitoring, Testing, and Troubleshooting for
more information on using the availability to set the SKIP setting for
improved radio performance.
RAD Command
Command
Description
Access Level
RAD
View radio statistics
RAD C
Clear radio statistics
12345678901234567890123456789012345678901234567890123456789012345678901234567890
[Common Header]
RSSI
-69 dBm
AVAILABILITY:
From 10/02/2009 17:33:21
Overall
100.00 %
Zone 1
100.00 %
Zone 2
100.00 %
Zone 3
100.00 %
Zone 4
100.00 %
Zone 5
100.00 %
Zone 6
100.00 %
Zone 7
100.00 %
Zone 8
100.00 %
Zone 9
100.00 %
Zone 10
100.00 %
Figure 4.10
RAD Command Response
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4.22
Settings and Commands
Commands
SER Command
Use SER to view and manage the Sequential Events Recorder report, as shown in
Table 4.17.
Table 4.17
SER Command
Command
Description
Access Level
SER
Displays a chronological progression of all available SER rows (up to 1024 rows); row 1 is the
most recent and row 1024 is the oldest.
SER row 1
Displays a chronological or reverse chronological
SER row 1 row 2 subset of the SER rows.
SER date 1
SER date 1 date 2
SER C
Clears/resets all SER records.
If the requested SER report rows do not exist, the device will respond with the
following:
NO SER data
SET Command
The SET command is for viewing or changing device settings, as shown in Table 4.18.
Append TERSE to skip the settings display after the last setting. Use this parameter to
speed up the SET command. If you want to review the settings before saving, do not
use the TERSE option.
Table 4.18
SET Command (Change Settings)
Command
Description
Access Level
Set Global settings
SET R s
Set Radio settings
SET P s
Set serial Port settings
SET G
sa
a. s = specific setting name.
Append the specific setting name you want to change in the SET command to
immediately jump to the setting. If s is not entered, the device starts at the first setting.
For example, to directly jump to the TXPWR setting in the Radio setting category,
enter SET R TXPWR . This will take you directly to the TXPWR setting.
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Settings and Commands
Commands
4.23
If you want to set all of the Radio settings, issue the SET R command and it will start
at the beginning of the settings list. Enter the desired setting value or press  to
accept the existing setting, as shown in Table 4.19.
Table 4.19
SET Command Editing Keystrokes
Press Key
Results

Retains the setting and moves to the next setting.
^
Returns to the previous setting.
< 
Returns to the previous setting category.
> 
Moves to the next setting category.
END 
Exits the editing session, then prompts you to save the settings.

Aborts the editing session without saving changes.
The device checks each setting to ensure that it is within the allowed range. If the
setting is not within the allowed range, the device generates an Out of Range
message and prompts you for the setting again. When all the settings are entered, the
device displays the new settings and prompts you for approval to enable them. Answer
Y  to enable the new settings. The device is disabled for no longer than one
second while saving the new settings. The ALARM LED illuminates momentarily and the
ENABLED LED extinguishes while the device is disabled.
SHOW Command
When showing settings, the radio displays the settings label and the present value from
nonvolatile memory for each setting class as shown in Table 4.20.
Table 4.20
SHO Command (Show/View Settings)
Command
Description
Access Level
SHO G s
Show Global settings
SHO R s
Show Radio settings
SHO P s
Show serial Port settings
Append s and the specific settings name you want to view in the SHOW command to
immediately jump to the setting. If s (and the settings name) is not included, the device
presents settings beginning with the first in the group.
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4.24
Settings and Commands
Commands
STATUS Command
Use STA to display the status report, as shown in Table 4.21.
Table 4.21
STA Command (Device Self-Test Status)
Command
Description
Access Level
STA n
Displays the device self-test information n times
(n = 1–32767). Defaults to 1 if n is not specified.
STA C
Reboots the device and clears self-test warning and
failure status results.
Refer to Section 5: Performance Monitoring, Testing, and Troubleshooting for self-test
thresholds and corrective actions, as well as information on hardware configuration
conflict resolution. Figure 4.11 shows the device response to the STA command.
=>>STA 
RADIO 1
STATION_A
Date: 10/10/2009
Time: 16:44:00
Time Source: Internal
Serial Number: 2009275250
FID=SEL-3031-R100-V0-Z001001-D20091009 CID=25D052CF
RFID=SEL-3031-R100-V0-D20091009
BFID=SLBT-3031-R100-V0-Z000000-D20091009
Part number 30310W01XXX
PROTOCOLS
PORT 1
STANDARD
PORT 2
MODBUS
PORT 3
MB8
SELF TEST RESULTS
FLASH
OK
SDRAM
OK
RADIO
OK
RTC
OK
SEC
ABSENT
Device Enabled
Figure 4.11
Device Response to the STATUS Command
Table 4.22 shows the status report definitions and message formats for each test.
Table 4.22
STA Command Report (Sheet 1 of 2)
Status Report
Designator
Definition
Message Format
FID
Firmware identifier string
Text Data
RFID
FPGA Firmware identifier string
Text Data
BFID
SELBOOT Firmware identifier string
Text Data
Part Number
Part Number of the SEL-3031
Text Data
PORT 1, 2, 3
Protocol setting for port 1, 2, and 3
STANDARD, MB8, MODBUS
SEL-3031 Instruction Manual
Date Code 20091009
Settings and Commands
Commands
Table 4.22
4.25
STA Command Report (Sheet 2 of 2)
Status Report
Designator
Definition
Message Format
FLASH
Nonvolatile memory integrity
OK/FAIL
SDRAM
Integrity of code that runs in RAM
OK/FAIL
RADIO
Radio module status
OK/FAIL
RTC
Real-Time Clock status
OK/FAIL
SEC
SEL-3044 Encryption Card status
OK/ABSENT/RESET/FAIL
TIME Command
Use TIME to return information about the SEL-3031 internal clock, as shown in
Table 4.23. You can specify hours and minutes (seconds data are optional). Separate
the hours, minutes, and seconds with colons, semicolons, spaces, commas, or slashes.
Table 4.23
Command Definitions
Command
Description
Access Level
TIME
Displays the present internal clock time.
TIME hh:mm
Sets the internal clock to hh:mm.
TIME hh:mm:ss
Sets the internal clock to hh:mm:ss.
Enter TIME hh:mm and TIME hh:mm:ss to set the internal clock time. The value hh
is for hours 0–23; the value mm is for minutes 0–59; the value ss is for seconds 0–59. If
you enter a valid time, the device will update, save the time in nonvolatile memory, and
display the time entered. If you enter an invalid time, the SEL-3031 will respond with
Invalid Time.
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Section 5
Performance Monitoring, Testing,
and Troubleshooting
Overview
This section provides information on monitoring radio performance, testing, and
troubleshooting. Because the SEL-3031 is equipped with extensive self-tests,
traditional periodic test procedures may be eliminated or greatly reduced.
Monitoring Radio Performance
This section describes the tools you can use to monitor and improve the radio
performance. This section assumes that the radio link is up and running in service.
There are several items that you can use to optimize the radio link. The first section
explains how to optimize standard radio links using DNP3, Modbus®, or other byteoriented protocols. The second section addresses monitoring the radio performance
when using MIRRORED BITS®.
Monitoring and Improving Radio Link Performance
This section assumes the radio link is up and running with sufficient link availability. If
the radio link is either not working or has very low availability view Section 2:
Installation for information on properly installed and operating the radio.
Obtain access through the front USB port either with a terminal program or
ACSELERATOR QuickSet® SEL-5030 Software. Access Level 1 and issue the RAD
command (see Figure 5.1). The first value from the report is the RSSI receive signal
strength indication. This is the level of received level strength of the radio given in
dBm. A good radio link should have 20 dBm of margin to account for environmental
conditions and signal fade. The SEL-3031 receiver is rated at –97 dBm. If you observe
a value of –77 dBm or greater then you are receiving a strong signal. If the value is less
than –77 dBm that does not mean the radio link will not work; it means that the
performance and channel availability needs to be monitored. To increase the signal or
availability numbers the radio antenna may need to be adjusted, output power
increased, antenna replaced with a with a higher gain antenna, (not to exceed transmit
power of 36 dBm EIRP), or the SKIP setting used to avoid zones with low availability.
A path study should always be done before the radio is installed. The RSSI value
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5.2
Performance Monitoring, Testing, and Troubleshooting
Monitoring Radio Performance
should match to the results of the path study. If the path study numbers do not match
the actual results then either the data entered is incorrect or information about the
locations was omitted. Contact SEL if you cannot get the calculated values to match
the measured values.
RADIO 1
STATION_A
Date: 09/11/2009
Time: 10:54:26
Time Source: Internal
RSSI
-46 dBm
AVAILABILITY:
From 09/11/2009 10:53:50
Overall
100.00 %
Zone 1
100.00 %
Zone 2
100.00 %
Zone 3
100.00 %
Zone 4
100.00 %
Zone 5
100.00 %
Zone 6
100.00 %
Zone 7
100.00 %
Zone 8
100.00 %
Zone 9
100.00 %
Zone 10
100.00 %
Figure 5.1
Example RAD Command
If you are using directional antennas, verify they have identical orientation—both sides
must be either polarized horizontally or vertically. Typically, a vertically polarized
antenna will give better results than a horizontally polarized antenna. If the location of
the radio antenna is shared with other antennas operating at the same frequency, then
proper spacing and opposite polarization should be used on one set of the antennas,
along with using the SKIP setting. See Section 2: Installation for more information on
antenna installation. Check the aiming of the antenna while updating the RAD
command until you get the strongest signal. This will require two people, where one
person is moving the position of the antenna in small increments, while the other is
monitoring the RSSI. The antenna position must be rotated on both sides to obtain the
highest signal strength. The RSSI must also be reviewed on each radio. The receive
strength on the remote radio will likely be different than the received strength on the
master radio.
The last step to check is the availability of the radio link. The RAD command will give
the overall availability of the radio link. For protection systems the desire is to have a
radio link with 99.99% availability. This overall availability number is a great way of
directly obtaining this number. If you are running MIRRORED BITS then you can also
use the end devices for the availability number.
To get a good availability reading, issue a RAD C command from Access Level 2. This
will reset all of the availability numbers. Let the radio link run for a couple of days or
longer. The longer period of time, the more accurate the numbers. After a few days
have passed issue the RAD command and view the availability numbers. If the overall
availability number is less than desired then look at the availability numbers per zone.
If all of the zones are down in availability then more adjustment is needed on the
antennas. If a few of the zones are down and the rest are acceptable then go back to the
radio settings and change the SKIP zone setting. Enter the zones, up to six, that you
want to skip with the lowest availability. Issue a RAD C command and let the radio run
for a couple of days.
SEL-3031 Instruction Manual
Date Code 20091009
Performance Monitoring, Testing, and Troubleshooting
Monitoring Radio Performance
5.3
You may need to repeat these steps before the availability reaches the desired level.
Note: There are 16 zones available in the SEL-3031 where a radio link only uses a
maximum of 10 zones. Skipping zones will turn on zones not previously used and may
give worse performance. The default SKIP setting of NONE will make the SEL-3031
SKIP zones 11–16.
If the availability of most of the zones is bad (low) and positioning the antenna did not
help then the radio link has a large amount of interference or there is an obstruction to
the Fresnel zone that is causing reflection issues. The interference can be caused by a
number of items. A path study is critical to determine how good the line-of-sight is and
how high the antennas need to be. If the path study results do not match your actual
results you will need to make sure all of the parameters used to make the path study
were correct. If the results still do not match then there is an unaccounted obstruction
in the path (either buildings or trees) that is causing the decrease in availability. View
Section 2: Installation for more information on properly installing the antenna. If the
availability numbers are less than desired then the problem is within the location,
interference, or multipath radio issues. If the antenna tower is not located high enough
and proper steps are not done to detect noise floors or obstructions to the fresnel zone
then the availability numbers may not reach those used in the path study.
Monitoring MIRRORED BITS Performance
When using one, two, or three ports of the SEL-3031 for MIRRORED BITS
communications it is important to monitor the availability of the channel. The
SEL-3031 provides channel availability information and the MIRRORED BITS devices
each contain communications data for each MIRRORED BITS channel. This section
describes how these work and how to optimize the MIRRORED BITS channel to achieve
a high level of availability.
The end of the previous section describes how to measure the availability of the radio
link. All SEL relays that have MIRRORED BITS give a full channel monitoring report
that will give the unavailability and a report on all of the data drops. The SEL-3031
displays the availability and SEL MIRRORED BITS devices display the unavailability.
The relationship of the two is represented below.
Availability = 1 – Unavailability
The SEL-3031 will show a lower availability than shown by the SEL relays with
MIRRORED BITS. The difference lies in how the radio monitors each packet of
MIRRORED BITS. Upon detecting bad packets the SEL-3031 removes the packets
before they reach the relay. The relay will only declare a dropped channel if it receives
bad data or after a period of time expires without seeing a new data packet. This gives
the SEL-3031 a chance to ride through several bad hops, remove corrupted data, keep
the channel up and operating, and minimize the amount of total unavailability as seen
by the MIRRORED BITS devices.
Before you use an SEL device’s MIRRORED BITS communications report, make sure
you go through Monitoring and Improving Radio Link Performance to verify the radio
is optimized and the SKIP setting is set to avoid noisy zones.
Date Code 20091009
SEL-3031 Instruction Manual
5.4
Performance Monitoring, Testing, and Troubleshooting
Monitoring Radio Performance
Monitoring MIRRORED BITS performance over a radio link is critical to ensure proper
operation when called upon to operate. The RBAD and CBAD bits provided in every
SEL device with MIRRORED BITS can be used to alarm when the radio link is degraded
below levels needed for proper operation.
➤
RBADPU: Setting for the amount of time the channel is in a failed
state before setting the RBAD alarm Relay Word bit.
➤
CBADPU: Setting for the threshold of the CBAD channel availability
alarm.
When a MIRRORED BITS channel is operating correctly, Relay Word bit ROK is set to
1. When the channel is disturbed, ROK drops out. The ROK bit is not recommended
for use as an alarm point. ROK is a good indication of the channel’s health. If the ROK
bit is toggling, this is an indication of an intermittent channel problem.
Serial Data
MIRRORED BITS
Decoder and Integrity
Checks
Figure 5.2
ROK
RBAD
Timer
RBAD
RBAD Generation
The RBAD bit is generated by the output of the RBAD timer. The RBAD timer is
driven by the ROK signal. RBAD is the recommended bit to indicate communications
alarms. Typically, a communications outage of two seconds or greater is considered an
alarm condition. RBAD should be set on both MIRRORED BITS device to the maximum
length of outage before declaring an alarm.
The CBADPU setting is generated from the unavailability of the MIRRORED BITS
channel. For example, if RBADPU is set to 2 seconds and the longest channel
disruption was 1 second out of every second and this occurred every 2 seconds, RBAD
would not assert. RBAD would not assert because MIRRORED BITS is not disrupted for
longer than 2 seconds at any time. Relay Word bit CBAD and the CBADPU setting
solves this problem. To set CBADPU there are two good options. The first option is to
set it to 2000. This is a common value used based upon spread spectrum radio use in
the field. The CBAD Relay Word bit will assert when the unavailability of the channel
exceeds 0.02.
The other method in setting CBAD is to let the radio link run for a period of time and
monitor the performance. After reviewing a month of unavailability you will be able to
set CBADPU above the unavailability value.
The proper setting and use of CBAD and RBAD is important to report when the
communications link has failed or has become intermittent enough to cripple proper
communication. Over time, many issues can occur to cause a bad or intermittent radio
link. Items such as tree growth, new building construction, or another radio added at
SEL-3031 Instruction Manual
Date Code 20091009
Performance Monitoring, Testing, and Troubleshooting
Self-Test
5.5
the site or in the path of the current radio link. It is important to take CBAD and RBAD
and use them in the relay to trigger an alarm condition through an output contact or
have the SCADA system detect the alarm. Line-of-site radio paths can experience
adverse conditions over time and it is critical to constantly monitor the radio
performance to keep the availability numbers as high as possible.
Self-Test
All self-tests are described in Table 5.1. If all diagnostic tests are passed, the ENABLED
LED is on, the ALARM LED is off, and the contact output is open. If the device is
disabled, the ENABLED LED is off, the ALARM LED is illuminated, and the contact output
is closed.
Table 5.1
Device Self-Tests
SER
Message
Alarm
LED
Alarm
Contact
Fails if FPGA registers do not match
expected.
Yes
On
Closed
Data RAM
Performs read/write tests on each
section of Data RAM.
Yes
On
Closed
Code RAM
Performs a comparison test against
code flash.
Yes
On
Closed
Code Flash
Checksum is continually computed
on code base.
No
On
Closed
Flash (Settings) Performs a validity test every hour
on the settings.
Yes
On
Closed
Processor
Exception
Indicates processor failure.
Yes
On
Closed
RTC
Indicates clock chip static RAM fail- Yes
ures.
On
Closed
Self-Test
Description
FPGA Version
Mismatch
Date Code 20091009
SEL-3031 Instruction Manual
5.6
Performance Monitoring, Testing, and Troubleshooting
Troubleshooting
Troubleshooting
Table 5.2
Troubleshooting Tips (Sheet 1 of 2)
Symptom
Probable Cause
Corrective Action
ALARM LED is ON
Radio recognized a status
failure.
Cycle power, issue STATUS command. If alarm
signal returns, return unit to
the factory for repair.
ALARM LED flashes ON
every half second.
Radio detected a VSWR
Verify all connections from
error where there is an open the antenna to the radio are
or short on the antenna port. secure. Verify the antenna,
feedlines, or lightning arrestor is not damaged.
The SEC LED is flashing.
The SEL-3031 properly
detects the encryption card
but the card is in reset and
doesn't have the key set.
Use ACSELERATOR QuickSet and set the KEY setting.
This must be set the same
on both radios.
Cannot connect to the radio
through the USB port.
USB driver not installed
properly.
Check for active SEL to
USB drivers from your PC
in Device Manager Ports
section. If that does not
work, uninstall and reinstall the driver and restart
your PC.
Cannot change radio settings.
Invalid password.
Install password disable
jumper and change passwords using the PAS command. See Password
Jumper on page 2.10 for
information on how to disable passwords.
Wall-mount radio will not
turn on.
The polarity of the power
supply wires is reversed.
Check the correct polarity
and reverse if incorrect.
SEL-3031 Instruction Manual
Date Code 20091009
Performance Monitoring, Testing, and Troubleshooting
Troubleshooting
Table 5.2
5.7
Troubleshooting Tips (Sheet 2 of 2)
Symptom
Probable Cause
Corrective Action
The Remote radio will not
link up to the Master.
Radio address or mode is
not set correctly.
The Master and Remote
radios must be set to the
same address and have the
same SKIP settings. Check
that the Master radio LINK
light is ON and that the NID
address and SKIP setting is
set correctly on both units.
Antennas are not pointed
correctly, or there is a bad
antenna cable.
Use ACSELERATOR QuickSet on the radio to issue the
RAD command to check for
signal strength. If the signal
is low, try to re-aim both
antennas to gain signal
strength and check for bad
antenna cables. See
Section 2: Installation for
more information on proper
radio installation.
Date Code 20091009
SEL-3031 Instruction Manual
This page intentionally left blank
Appendix A
U.Instruction Manual
Firmware and Manual Versions
Firmware
Determining the Firmware Version in Your Device
To find the version number of the firmware in your SEL-3031, use the STA command
(see STATUS Command on page 4.24 for more information). The firmware revision
number is after the R, and the release date is after the D. For example, the following
string shows firmware version number 100 with a release date of October 9, 2009:
FID=SEL-3031-R100-V0-Z001001-D20091009
Table A.1 lists the firmware versions, a description of any modifications, and the
instruction manual date code that corresponds to firmware versions. The most recent
firmware version is listed first.
Table A.1
Firmware Revision History
Firmware Identification (FID) Number
Summary of Revisions
Manual
Date Code
SEL-3031-R100-V0-Z001001-D20091009
➤ Initial version.
20091009
Instruction Manual
The date code at the bottom of each page of this manual reflects the creation or revision
date.
Table A.2 lists the instruction manual release dates and a description of modifications.
The most recent instruction manual revisions are listed at the top.
Table A.2
Instruction Manual Revision History
Revision Date
20091009
Date Code 20091009
Summary of Revisions
➤ Initial version.
SEL-3031 Instruction Manual
This page intentionally left blank
Appendix B
SEL-3044 Encryption Card
Overview
The SEL-3044 Encryption Card is a standalone card that can be added to the SEL-3031
to encrypt the radio data being sent between SEL-3031 radio links. The SEL-3044 can
be ordered at time of purchase or added as an upgrade. The SEL-3044 requires one
setting to provide a very strong level of encryption over the radio link. Anytime the
SEL-3031 is used with critical data it is strongly advised to use the SEL-3044. If you
do not use the SEL-3044, the data between the radios can be compromised. If you want
to encrypt the radio link an SEL-3044 is required in both radios.
NOTE: The SEL-3044 is NOT a PCMCIA card. Do not install
in a laptop.
Figure B.1
SEL-3044 Encryption Card
NIST FIPS 140-2 Level 2 Security
Requirements
The National Institute of Standards and Technology (NIST) developed the Federal
Information Processing Standards (FIPS) 140-2 standard that defines the security
requirements for a cryptographic module utilized within a security system protecting
sensitive information in computer and telecommunications systems.
Date Code 20091009
SEL-3031 Instruction Manual
B.2
SEL-3044 Encryption Card
Theory of Operation—SEL Protocol
Protection of a cryptographic module within a security system is necessary to maintain
the confidentiality and integrity of the information protected by the module.
FIPS 140-2 Level 2 covers areas related to the secure design and implementation of
a cryptographic module.
These areas include the following:
➤
Cryptographic module specification
➤
Cryptographic module ports and interfaces
➤
Roles, services, and authentication
➤
Finite state model
➤
Physical security
➤
Operational environment
➤
Cryptographic key management
➤
Electromagnetic interference/electromagnetic compatibility
(EMI/EMC)
➤
Self-tests
➤
Design assurance
➤
Mitigation of other attacks
The SEL-3044 meets FIPS 140-2 Level 2 requirements and has been submitted for
FIPS 140-2 Level 2 security validation. The status is currently pending NIST approval.
This level of data security provides assurance that best practices have been applied to
the design, testing, and manufacturing of the SEL-3044.
Theory of Operation—SEL Protocol
Encryption Components
A cryptographic device consists of three components: encryption algorithm, key
management, and device security functions.
Encryption Algorithm
The Advanced Encryption Standard (AES) algorithm with a key length of 256 bits is
implemented in the SEL-3044. This algorithm is a secure means of encrypting data.
The AES algorithm and key length provide proven resistance to modern cryptanalysis.
SEL-3031 Instruction Manual
Date Code 20091009
SEL-3044 Encryption Card
B.3
Theory of Operation—SEL Protocol
Key Management
System key (256 bits): The system key is set by a passphrase of 8 to 80 characters. The
passphrase is used to generate a system key. The system key is used to encrypt and
securely transmit unique session keys (see below). It also provides a cryptographic
authentication mechanism for rejecting session requests by unauthorized SEL-3044
devices.
Session key (256 bits): Session keys are used to encrypt all protected user data prior to
transmission. They are produced at system startup and periodically during sessions.
Session keys are generated using the process outlined by FIPS 186-2. They are
produced using an integrated physical random number generator (RNG) and a
statistical data whitening algorithm. Session keys are purely random and are not linked
to the system key. The use of unique session keys limits the amount of data that is
encrypted with a single key value, thus strengthening the system against
cryptanalytical attack. The session keys are encrypted using the system key prior to
being exchanged between SEL-3044.
Device Security
The SEL-3044 incorporates a hardware RNG and FIPS-approved data whitener to
guarantee that all session keys contain 256 bits of entropy (i.e., completely random).
This guarantees that encoded messages are protected by a true cryptographic strength
of 256 bits.
Multilevel password authentication defines user security roles.
Changing the system key can only be performed by authorized users that have Access
Level 2 passwords.
If required, the user can reset the entire device. This allows the user to reinitialize the
system key should the security parameters need to change due to IT security
procedures or if the programmed system key value is lost.
NOTE: This process requires physical access to the
SEL-3031 and cannot be done remotely.
Security of the Transferred Data
The SEL-3044 provides data encryption with a cryptographic key strength of 256 bits.
The SEL-3044 RNG is designed so that all possible key values are equally likely. It is
widely accepted throughout the cryptographic community that it is not realistically
possible to mount a successful brute force (key guessing) attack on a 256-bit key space
with technology available today.
Date Code 20091009
SEL-3031 Instruction Manual
B.4
SEL-3044 Encryption Card
Theory of Operation—SEL Protocol
Application Consideration
Two messaging structures exist to establish and maintain a secure, coherent
communications link between two SEL-3044 devices: In-Band (IB) frames and Out-ofBand (OOB) frames. IB frames transmit encrypted user data (i.e., data received on the
trusted data interface) between the two protected devices (computer, IED, RTU, etc.).
OOB frames transmit connection control data between the two SEL-3044 devices in
the communications link. Control frames are required to implement key exchanges,
status checks, and other functions necessary to maintain the communications link.
In-Band Message Format
IB messages consist of the encrypted data plus the frame overhead necessary to
maintain synchronization and channel security. Figure B.2 shows the format of an IB
frame. The shaded area is the encrypted data portion of the message.
Maximum of 7 Bytes
User-Defined Frame Length
IB Header
Protected Data
Figure B.2
In-Band Data Packet Format
Out-of-Band Message
Out-of-Band (OOB) messages are used to exchange control information between
SEL-3044 cards. These exchanges include loss of synchronization, request for rekey,
and rekey information.
IMPORTANT: During OOB message communication, data
exchange between the devices connected to the
SEL-3044 cannot occur. Communication will be
temporarily halted during a rekey.
System Settings
The system key provides encryption and secure transmission of unique session keys
between SEL-3044 devices. It also provides a cryptographic authentication mechanism
for rejecting session requests by unauthorized devices. Session keys provide encryption
of all protected user data prior to transmission. An SEL-3044 produces session keys at
system startup, and periodically during sessions, using the process outlined by FIPS
186-2. An integrated physical RNG and statistical data-whitening algorithm generate
purely random session keys. Through the use of these unique session keys, the
SEL-3044 limits the amount of data encrypted by any single key value, thus
strengthening the system against attack.
SEL-3031 Instruction Manual
Date Code 20091009
SEL-3044 Encryption Card
B.5
Theory of Operation—SEL Protocol
NOTE: Both SEL-3044 transceivers that communicate with
each other must share the same system key.
AES Overview
The AES encryption function uses a 256-bit-long secret key and scrambles the contents
of each frame prior to transmission to provide cryptographically strong data
confidentiality.
Encryption is the process of transforming a digital message from its original form into
a form that an unauthorized individual cannot interpret. The output of the encryption
process is a function of the message and an encryption key (see Figure B.3).
Encryption Key
AES
Encrypt
Hi Bob!
Figure B.3
Decryption Key
*4gu>g
aIL8}2=h
AES
Decrypt
Hi Bob!
Operation of the AES Encryption Function
This encryption process must be completely reversible by an authorized individual
with access to the secret decryption key. Authority to read a message is only granted by
sharing knowledge of the secret decryption key. Ideally, only individuals with
knowledge of the decryption key can reverse the encryption operation and interpret the
protected message. There are two main classes of encryption functions. Symmetric key
encryption relies on the same secret key value, K, to perform both the encryption and
decryption transformations. Asymmetric key encryption, on the other hand, uses a
different key for encryption and decryption for example, asymmetric encryption might
use K1 for encryption and K2 for decryption. The AES encryption algorithm the
SEL-3044 uses is a symmetric block cipher with an encryption/decryption key size of
256 bits.
The AES is the latest encryption standard adopted by NIST. In 1997, NIST challenged
the cryptographic community to develop the next generation encryption algorithm to
replace the aging DES and 3DES encryption standards. In 2000, NIST chose the
Rijndael encryption algorithm as the AES encryption standard. During the evaluation
of candidates for the AES standard, some of the world’s best cryptanalysts analyzed
and approved Rijndael. Since its adoption in 2001, AES has proven to be very effective
against known attacks, very efficient, and simple to implement.
Date Code 20091009
SEL-3031 Instruction Manual
B.6
SEL-3044 Encryption Card
Theory of Operation—SEL Protocol
Frame Replay Protection
Every frame in a given session contains a sequence number field. The value in this field
increments every time a frame is transmitted. The SEL-3044 will not accept any frame
that contains a sequence number value that is less than, or equal to, the sequence
number value received in the last frame. It is exceedingly difficult to maliciously alter
the sequence number in any given frame to bypass this functionality because the
sequence number field is protected by the strong cryptographic authentication
mechanisms. Because of the protection these mechanisms provide, an attacker cannot
capture a previously transmitted frame and resend the frame to the SEL-3044 to cause
harmful actions.
Resetting the SEL-3044
At some point it may be necessary to reset the SEL-3044. You must have access to the
front USB port on the SEL-3031. The SEL-3044 must be installed in the SEL-3031 to
reset. Use either ACSELERATOR QuickSet® SEL-5030 Software or a terminal interface
to access the Radio settings. In the Radio settings, set the KEY setting to None, save
the setting, then set a new passphrase and save.
If you have lost your passwords to access the SEL-3031 then you must disable
passwords by temporarily installing a jumper. Refer to Password Jumper on page 2.10
and Table 2.5 for information and instructions on disabling passwords.
Installing SEL-3044 in the SEL-3031
The SEL-3044 can be ordered at time of purchase of the radio or it may be added later
as a field upgrade. The process involves powering down the radio, removing hardware,
installing the card, and setting the radio.
CAUTION
The radio contains devices sensitive to Electrostatic Discharge (ESD). When
working on the radio with the front or top cover removed, work surfaces and
personnel must be properly grounded or equipment damage may result.
Step 1.
Remove the power from the radio and remove all connections from
the device.
Step 2.
Rack-mount SEL-3031: Loosen the six front-panel screws and
remove the front panel.
Wall-mount model: Use a Torx® T15 screwdriver and remove the
four screws located on the sides of each corner. Slide the cover up and
back to reveal the front of the unit.
Step 3.
Between the main board and radio board there is a PCMCIA card
slot. Gently slide the SEL-3044 straight into the card slot. Push firmly
until it is fully seated.
SEL-3031 Instruction Manual
Date Code 20091009
SEL-3044 Encryption Card
B.7
Theory of Operation—SEL Protocol
Figure B.4
Encryption Card Location
Step 4.
Reassemble the unit in reverse order of Step 2.
Step 5.
Apply power to the unit and verify the SEC light is flashing. The
flashing LED shows the SEL-3044 is functioning properly and is
currently in Reset.
If the SEC LED is not flashing, then you must turn off the unit and
verify the card is properly seated in the pins.
If the SEC LED does not flash on power up after checking the card is
seated properly, then you will need to send the radio and encryption
card back for repair.
Step 6.
Use ACSELERATOR QuickSet to connect to the device and set the
KEY setting to enable the SEL-3044.
Step 7.
The KEY setting must be set the same on both SEL-3031 transceivers
for proper operation.
Date Code 20091009
SEL-3031 Instruction Manual
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