CHAPTER 7
TROUBLESHOOTING
7-1. Self-diagnostic Function .....................................................202
1. Operation Monitor LEDs When an Error Occurs...........202
2. Operation Status When an Error Occurs ........................203
1) Duplicated Output Error (Total-check Error) ......203
2) Battery Error (Self-diagnostic Error)...................203
3) Operation Error (Self-diagnostic Error)...............203
7-2. Troubleshooting...................................................................204
1. Points to be Checked When an Error Occurs .................204
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When an ERR. LED is ON ..................................205
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When an ALARM LED is ON.............................209
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When all LEDs are OFF ......................................210
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Diagnosing output malfunction............................211
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When “PLC=COMM. ERR” is displayed
on the NPST-GR screen .......................................214
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When “PROTECT ERROR” is displayed ...........215
7-3. Maintenance ........................................................................216
1. Preventive Maintenance .................................................216
2. Replacement of Backup Battery .....................................216
1) Battery Life..........................................................216
2) How to Replace Backup Battery..........................217
3. Removable Terminal ......................................................217
Содержание FP1
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