3
TROUBLESHOOTING
3.1
SELF-DIAGNOSTIC SOFTWARE
The device includes several self-monitoring functions to check the operation of its hardware and software
while in service. If there is a problem with the hardware or software, it should be able to detect and report the
problem, and attempt to resolve the problem by performing a reboot. In this case, the device would be out of
service for a short time, during which the ‘Healthy’ LED on the front of the device is switched OFF and the
watchdog contact at the rear is ON. If the restart fails to resolve the problem, the unit takes itself permanently
out of service; the ‘Healthy’ LED stays OFF and watchdog contact stays ON.
If a problem is detected by the self-monitoring functions, the device attempts to store a maintenance record
to allow the nature of the problem to be communicated to the user.
The self-monitoring is implemented in two stages: firstly a thorough diagnostic check which is performed on
boot-up, and secondly a continuous self-checking operation, which checks the operation of the critical
functions whilst it is in service.
3.2
POWER-UP ERRORS
If the IED does not appear to power up, use the following to determine whether the fault is in the external
wiring, auxiliary fuse, IED power supply module or IED front panel.
Test
Check
Action
1
Measure the auxiliary voltage on terminals 1 and 2.
Verify the voltage level and polarity against the rating
label on the front.
Terminal 1 is –dc, 2 is +dc
If the auxiliary voltage is correct, go to test 2. Otherwise check the wiring and
fuses in the auxiliary supply.
2
Check the LEDs and LCD backlight switch on at
power-up. Also check the N/O (normally open)
watchdog contact for closing.
If the LEDs and LCD backlight switch on, or the contact closes and no error
code is displayed, the error is probably on the main processor board in the
front panel.
If the LEDs and LCD backlight do not switch on and the contact does not
close, go to test 3.
3
Check the field voltage output (nominally 48 V DC)
If there is no field voltage, the fault is probably in the IED power supply
module.
3.3
ERROR MESSAGE OR CODE ON POWER-UP
The IED performs a self-test during power-up. If it detects an error, a message appears on the LCD and the
power-up sequence stops. If the error occurs when the IED application software is running, a maintenance
record is created and the device reboots.
Test
Check
Action
1
Is an error message or code permanently displayed during
power up?
If the IED locks up and displays an error code permanently, go to test 2.
If the IED prompts for user input, go to test 4.
If the IED reboots automatically, go to test 5.
2
Record displayed error, and then remove and re-apply IED
auxiliary supply.
Record whether the same error code is displayed when the IED is
rebooted. If no error code is displayed, contact the local service centre
stating the error code and IED information. If the same code is displayed,
go to test 3.
Chapter 15 - Maintenance and Troubleshooting
MiCOM P747
378
P747-TM-EN-1
P747-TM-EN-1.1
Содержание MiCOM P747 Agile
Страница 2: ......
Страница 16: ...Contents MiCOM P747 xiv P747 TM EN 1 P747 TM EN 1 1...
Страница 20: ...Table of Figures MiCOM P747 xviii P747 TM EN 1 P747 TM EN 1 1...
Страница 21: ...INTRODUCTION CHAPTER 1...
Страница 22: ...Chapter 1 Introduction MiCOM P747 2 P747 TM EN 1 P747 TM EN 1 1...
Страница 31: ...SAFETY INFORMATION CHAPTER 2...
Страница 32: ...Chapter 2 Safety Information MiCOM P747 12 P747 TM EN 1 P747 TM EN 1 1...
Страница 42: ...Chapter 2 Safety Information MiCOM P747 22 P747 TM EN 1 P747 TM EN 1 1...
Страница 43: ...HARDWARE DESIGN CHAPTER 3...
Страница 44: ...Chapter 3 Hardware Design MiCOM P747 24 P747 TM EN 1 P747 TM EN 1 1...
Страница 74: ...Chapter 3 Hardware Design MiCOM P747 54 P747 TM EN 1 P747 TM EN 1 1...
Страница 75: ...CONFIGURATION CHAPTER 4...
Страница 76: ...Chapter 4 Configuration MiCOM P747 56 P747 TM EN 1 P747 TM EN 1 1...
Страница 117: ...PROTECTION FUNCTIONS CHAPTER 5...
Страница 118: ...Chapter 5 Protection Functions MiCOM P747 98 P747 TM EN 1 P747 TM EN 1 1...
Страница 160: ...Chapter 5 Protection Functions MiCOM P747 140 P747 TM EN 1 P747 TM EN 1 1...
Страница 161: ...MONITORING AND CONTROL CHAPTER 6...
Страница 162: ...Chapter 6 Monitoring and Control MiCOM P747 142 P747 TM EN 1 P747 TM EN 1 1...
Страница 211: ...SCADA COMMUNICATIONS CHAPTER 7...
Страница 212: ...Chapter 7 SCADA Communications MiCOM P747 192 P747 TM EN 1 P747 TM EN 1 1...
Страница 259: ...REDUNDANT ETHERNET CHAPTER 8...
Страница 260: ...Chapter 8 Redundant Ethernet MiCOM P747 240 P747 TM EN 1 P747 TM EN 1 1...
Страница 293: ...CYBER SECURITY CHAPTER 9...
Страница 294: ...Chapter 9 Cyber Security MiCOM P747 274 P747 TM EN 1 P747 TM EN 1 1...
Страница 313: ...SETTINGS APPLICATION SOFTWARE CHAPTER 10...
Страница 314: ...Chapter 10 Settings Application Software MiCOM P747 294 P747 TM EN 1 P747 TM EN 1 1...
Страница 322: ...Chapter 10 Settings Application Software MiCOM P747 302 P747 TM EN 1 P747 TM EN 1 1...
Страница 323: ...BUSBAR COMMISSIONING TOOL CHAPTER 11...
Страница 324: ...Chapter 11 Busbar Commissioning Tool MiCOM P747 304 P747 TM EN 1 P747 TM EN 1 1...
Страница 330: ...Chapter 11 Busbar Commissioning Tool MiCOM P747 310 P747 TM EN 1 P747 TM EN 1 1...
Страница 331: ...SCHEME LOGIC CHAPTER 12...
Страница 332: ...Chapter 12 Scheme Logic MiCOM P747 312 P747 TM EN 1 P747 TM EN 1 1...
Страница 348: ...Chapter 12 Scheme Logic MiCOM P747 328 P747 TM EN 1 P747 TM EN 1 1...
Страница 349: ...INSTALLATION CHAPTER 13...
Страница 350: ...Chapter 13 Installation MiCOM P747 330 P747 TM EN 1 P747 TM EN 1 1...
Страница 361: ...COMMISSIONING INSTRUCTIONS CHAPTER 14...
Страница 362: ...Chapter 14 Commissioning Instructions MiCOM P747 342 P747 TM EN 1 P747 TM EN 1 1...
Страница 387: ...MAINTENANCE AND TROUBLESHOOTING CHAPTER 15...
Страница 388: ...Chapter 15 Maintenance and Troubleshooting MiCOM P747 368 P747 TM EN 1 P747 TM EN 1 1...
Страница 403: ...TECHNICAL SPECIFICATIONS CHAPTER 16...
Страница 404: ...Chapter 16 Technical Specifications MiCOM P747 384 P747 TM EN 1 P747 TM EN 1 1...
Страница 425: ...SYMBOLS AND GLOSSARY APPENDIX A...
Страница 426: ...Appendix A Symbols and Glossary MiCOM P747 406 P747 TM EN 1 P747 TM EN 1 1...
Страница 443: ...COMMISSIONING RECORD APPENDIX B...
Страница 444: ...Appendix B Commissioning Record MiCOM P747 424 P747 TM EN 1 P747 TM EN 1 1...
Страница 448: ...Final Checks Result LEDs reset Yes No Appendix B Commissioning Record MiCOM P747 428 P747 TM EN 1 P747 TM EN 1 1...
Страница 449: ...WIRING DIAGRAMS APPENDIX C...
Страница 450: ...Appendix C Wiring Diagrams MiCOM P747 430 P747 TM EN 1 P747 TM EN 1 1...
Страница 456: ...Appendix C Wiring Diagrams MiCOM P747 436 P747 TM EN 1 P747 TM EN 1 1...
Страница 457: ......