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SEL-551 Relay Instruction Manual Date Code 20110408
Table of Contents
Section 5: Serial Port Communications and Commands
Overview..........................................................................................................................................................5.1
Port Connector and Communications Cables ..................................................................................................5.1
Communications Protocol................................................................................................................................5.4
Serial Port Automatic Messages......................................................................................................................5.7
Serial Port Access Levels.................................................................................................................................5.8
Command Summary ........................................................................................................................................5.9
Command Explanations.................................................................................................................................5.11
SEL-551 Command Summary
Section 6: Front-Panel Interface
Overview..........................................................................................................................................................6.1
Front-Panel Pushbutton Operation...................................................................................................................6.1
Functions Unique to the Front-Panel Interface ................................................................................................6.4
Rotating Default Display ...............................................................................................................................6.11
Section 7: Standard Event Reports and SER
Overview..........................................................................................................................................................7.1
Standard 15-Cycle Event Reports....................................................................................................................7.1
Sequential Events Recorder (SER) Event Report ............................................................................................7.8
Example Standard 15-Cycle Event Report ....................................................................................................7.11
Example Sequential Events Recorder (SER) Event Report...........................................................................7.17
Section 8: Testing and Troubleshooting
Overview..........................................................................................................................................................8.1
Testing Methods and Tools ..............................................................................................................................8.1
Acceptance Testing ..........................................................................................................................................8.4
Commissioning Testing .................................................................................................................................8.14
Maintenance Testing ......................................................................................................................................8.15
Relay Self-Tests .............................................................................................................................................8.16
Relay Troubleshooting...................................................................................................................................8.17
Relay Calibration ...........................................................................................................................................8.18
Factory Assistance .........................................................................................................................................8.18
Appendix A: Firmware and Manual Versions
Firmware......................................................................................................................................................... A.1
Instruction Manual.......................................................................................................................................... A.3
Appendix B: Firmware Upgrade Instructions
EPROM Firmware Upgrades.......................................................................................................................... B.1
Flash Firmware Upgrades............................................................................................................................... B.5
Appendix C: SEL Distributed Port Switch Protocol
Overview......................................................................................................................................................... C.1
Settings............................................................................................................................................................ C.1
Operation ........................................................................................................................................................ C.1
Appendix D: Configuration, Fast Meter, and Fast Operate Commands
Overview.........................................................................................................................................................D.1
Message Lists..................................................................................................................................................D.1
Message Definitions........................................................................................................................................D.2
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