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SEL-749M Relay Instruction Manual Date Code 20080918
Table of Contents
Section 5: Metering and Monitoring
Overview ......................................................................................................................................................... 5.1
Metering .......................................................................................................................................................... 5.1
Power Measurement Conventions ................................................................................................................... 5.4
Motor Operating Statistics............................................................................................................................... 5.5
Motor Start Report........................................................................................................................................... 5.6
Motor Start Trending ....................................................................................................................................... 5.7
Section 6: Settings
Overview ......................................................................................................................................................... 6.1
View/Change Settings Using the Front Panel.................................................................................................. 6.2
View/Change Settings With Serial Port........................................................................................................... 6.4
Setting Entry Error Messages.......................................................................................................................... 6.5
SEL-749M Settings Sheets
Section 7: Communications
Overview ......................................................................................................................................................... 7.1
Communications Interfaces ............................................................................................................................. 7.1
Communications Protocol ............................................................................................................................... 7.5
SEL ASCII Protocol Details............................................................................................................................ 7.6
Section 8: Front-Panel Operations
Overview ......................................................................................................................................................... 8.1
Front-Panel Layout.......................................................................................................................................... 8.1
Human-Machine Interface............................................................................................................................... 8.2
Operation and Target LEDs............................................................................................................................. 8.9
Section 9: Analyzing Events
Overview ......................................................................................................................................................... 9.1
Event Reporting............................................................................................................................................... 9.2
Sequential Events Recorder (SER) Report.................................................................................................... 9.14
Section 10: Testing and Troubleshooting
Overview ....................................................................................................................................................... 10.1
Testing Tools.................................................................................................................................................. 10.1
Commissioning Tests..................................................................................................................................... 10.3
Periodic Tests (Routine Maintenance)......................................................................................................... 10.10
Self-Test....................................................................................................................................................... 10.11
Troubleshooting........................................................................................................................................... 10.13
Factory Assistance....................................................................................................................................... 10.13
Appendix A: Firmware and Manual Versions
Firmware......................................................................................................................................................... A.1
Instruction Manual.......................................................................................................................................... A.3
Appendix B: Firmware Upgrade Instructions
Overview .........................................................................................................................................................B.1
Upgrade Instructions .......................................................................................................................................B.1
Appendix C: SEL Communications Processors
SEL Communications Protocols......................................................................................................................C.1
SEL Communications Processor .....................................................................................................................C.3
SEL Communications Processor and Relay Architecture ...............................................................................C.5
SEL Communications Processor Example ......................................................................................................C.7
Courtesy of NationalSwitchgear.com
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