If the device does not correctly read the opto-input state, test the applied signal. Verify the connections to the
opto-input using the wiring diagram and the nominal voltage settings in the
OPTO CONFIG
column. To do
this:
1.
Select the nominal voltage for all opto-inputs by selecting one of the five standard ratings in the
Global Nominal V
cell.
2.
Select
Custom
to set each opto-input individually to a nominal voltage.
3.
Using a voltmeter, check that the voltage on its input terminals is greater than the minimum pick-up
level (See the Technical Specifications chapter for opto pick-up levels).
If the signal is correctly applied, this indicates failure of an opto-input, which may be situated on standalone
opto-input board, or on an opto-input board that is part of the input module. Separate opto-input boards can
simply be replaced. If, however, the faulty opto-input board is part of the input module, the complete input
module should be replaced. This is because the analogue input module cannot be individually replaced
without dismantling the module and recalibration of the IED.
3.6.3
INCORRECT ANALOGUE SIGNALS
If the measured analogue quantities do not seem correct, use the measurement function to determine the
type of problem. The measurements can be configured in primary or secondary terms.
1.
Compare the displayed measured values with the actual magnitudes at the terminals.
2.
Check the correct terminals are used.
3.
Check the CT and VT ratios set are correct.
4.
Check the phase displacement to confirm the inputs are correctly connected.
3.7
PSL EDITOR TROUBLESHOOTING
A failure to open a connection could be due to one or more of the following:
●
The IED address is not valid (this address is always 1 for the front port)
●
Password in not valid
●
Communication set-up (COM port, Baud rate, or Framing) is not correct
●
Transaction values are not suitable for the IED or the type of connection
●
The connection cable is not wired correctly or broken
●
The option switches on any protocol converter used may be incorrectly set
3.7.1
DIAGRAM RECONSTRUCTION
Although a scheme can be extracted from an IED, a facility is provided to recover a scheme if the original file
is unobtainable.
A recovered scheme is logically correct but much of the original graphical information is lost. Many signals
are drawn in a vertical line down the left side of the canvas. Links are drawn orthogonally using the shortest
path from A to B. Any annotation added to the original diagram such as titles and notes are lost.
Sometimes a gate type does not appear as expected. For example, a single-input AND gate in the original
scheme appears as an OR gate when uploaded. Programmable gates with an inputs-to-trigger value of 1
also appear as OR gates
3.7.2
PSL VERSION CHECK
The PSL is saved with a version reference, time stamp and CRC check (Cyclic Redundancy Check). This
gives a visual check whether the default PSL is in place or whether a new application has been downloaded.
MiCOM P747
Chapter 15 - Maintenance and Troubleshooting
P747-TM-EN-1
381
P747-TM-EN-1.1
Summary of Contents for MiCOM P747 Agile
Page 2: ......
Page 16: ...Contents MiCOM P747 xiv P747 TM EN 1 P747 TM EN 1 1...
Page 20: ...Table of Figures MiCOM P747 xviii P747 TM EN 1 P747 TM EN 1 1...
Page 21: ...INTRODUCTION CHAPTER 1...
Page 22: ...Chapter 1 Introduction MiCOM P747 2 P747 TM EN 1 P747 TM EN 1 1...
Page 31: ...SAFETY INFORMATION CHAPTER 2...
Page 32: ...Chapter 2 Safety Information MiCOM P747 12 P747 TM EN 1 P747 TM EN 1 1...
Page 42: ...Chapter 2 Safety Information MiCOM P747 22 P747 TM EN 1 P747 TM EN 1 1...
Page 43: ...HARDWARE DESIGN CHAPTER 3...
Page 44: ...Chapter 3 Hardware Design MiCOM P747 24 P747 TM EN 1 P747 TM EN 1 1...
Page 74: ...Chapter 3 Hardware Design MiCOM P747 54 P747 TM EN 1 P747 TM EN 1 1...
Page 75: ...CONFIGURATION CHAPTER 4...
Page 76: ...Chapter 4 Configuration MiCOM P747 56 P747 TM EN 1 P747 TM EN 1 1...
Page 117: ...PROTECTION FUNCTIONS CHAPTER 5...
Page 118: ...Chapter 5 Protection Functions MiCOM P747 98 P747 TM EN 1 P747 TM EN 1 1...
Page 160: ...Chapter 5 Protection Functions MiCOM P747 140 P747 TM EN 1 P747 TM EN 1 1...
Page 161: ...MONITORING AND CONTROL CHAPTER 6...
Page 162: ...Chapter 6 Monitoring and Control MiCOM P747 142 P747 TM EN 1 P747 TM EN 1 1...
Page 211: ...SCADA COMMUNICATIONS CHAPTER 7...
Page 212: ...Chapter 7 SCADA Communications MiCOM P747 192 P747 TM EN 1 P747 TM EN 1 1...
Page 259: ...REDUNDANT ETHERNET CHAPTER 8...
Page 260: ...Chapter 8 Redundant Ethernet MiCOM P747 240 P747 TM EN 1 P747 TM EN 1 1...
Page 293: ...CYBER SECURITY CHAPTER 9...
Page 294: ...Chapter 9 Cyber Security MiCOM P747 274 P747 TM EN 1 P747 TM EN 1 1...
Page 313: ...SETTINGS APPLICATION SOFTWARE CHAPTER 10...
Page 314: ...Chapter 10 Settings Application Software MiCOM P747 294 P747 TM EN 1 P747 TM EN 1 1...
Page 322: ...Chapter 10 Settings Application Software MiCOM P747 302 P747 TM EN 1 P747 TM EN 1 1...
Page 323: ...BUSBAR COMMISSIONING TOOL CHAPTER 11...
Page 324: ...Chapter 11 Busbar Commissioning Tool MiCOM P747 304 P747 TM EN 1 P747 TM EN 1 1...
Page 330: ...Chapter 11 Busbar Commissioning Tool MiCOM P747 310 P747 TM EN 1 P747 TM EN 1 1...
Page 331: ...SCHEME LOGIC CHAPTER 12...
Page 332: ...Chapter 12 Scheme Logic MiCOM P747 312 P747 TM EN 1 P747 TM EN 1 1...
Page 348: ...Chapter 12 Scheme Logic MiCOM P747 328 P747 TM EN 1 P747 TM EN 1 1...
Page 349: ...INSTALLATION CHAPTER 13...
Page 350: ...Chapter 13 Installation MiCOM P747 330 P747 TM EN 1 P747 TM EN 1 1...
Page 361: ...COMMISSIONING INSTRUCTIONS CHAPTER 14...
Page 362: ...Chapter 14 Commissioning Instructions MiCOM P747 342 P747 TM EN 1 P747 TM EN 1 1...
Page 387: ...MAINTENANCE AND TROUBLESHOOTING CHAPTER 15...
Page 388: ...Chapter 15 Maintenance and Troubleshooting MiCOM P747 368 P747 TM EN 1 P747 TM EN 1 1...
Page 403: ...TECHNICAL SPECIFICATIONS CHAPTER 16...
Page 404: ...Chapter 16 Technical Specifications MiCOM P747 384 P747 TM EN 1 P747 TM EN 1 1...
Page 425: ...SYMBOLS AND GLOSSARY APPENDIX A...
Page 426: ...Appendix A Symbols and Glossary MiCOM P747 406 P747 TM EN 1 P747 TM EN 1 1...
Page 443: ...COMMISSIONING RECORD APPENDIX B...
Page 444: ...Appendix B Commissioning Record MiCOM P747 424 P747 TM EN 1 P747 TM EN 1 1...
Page 449: ...WIRING DIAGRAMS APPENDIX C...
Page 450: ...Appendix C Wiring Diagrams MiCOM P747 430 P747 TM EN 1 P747 TM EN 1 1...
Page 456: ...Appendix C Wiring Diagrams MiCOM P747 436 P747 TM EN 1 P747 TM EN 1 1...
Page 457: ......