
IPE300 series engineering VFD Contents
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7 Troubleshooting......................................................................................................................246
7.1 What this chapter contains..............................................................................................246
7.2 Indications of alarms and faults .......................................................................................246
7.3 Fault reset.......................................................................................................................246
7.4 Fault history....................................................................................................................246
7.5 Faults and solutions........................................................................................................246
7.5.1 Faults and solutions ..............................................................................................246
7.5.2 Other status ..........................................................................................................255
7.6 Analysis on common faults..............................................................................................256
7.6.1 Motor fails to work.................................................................................................256
7.6.2 Motor vibrates.......................................................................................................257
7.6.3 Overvoltage...........................................................................................................258
7.6.4 Undervoltage.........................................................................................................258
7.6.5 Motor overheating.................................................................................................259
7.6.6 VFD overheating...................................................................................................260
7.6.7 Motor stalls during ACC.........................................................................................260
7.6.8 Overcurrent...........................................................................................................261
7.7 Countermeasures on common interference.....................................................................261
7.7.1 Interference on meter switches and sensors..........................................................261
7.7.2 Interference on RS485 communication..................................................................263
7.7.3 Failure to stop and indicator shimmering due to motor cable coupling....................264
7.7.4 Leakage current and interference on RCD.............................................................264
7.7.5 Live device chassis...............................................................................................265
8 Maintenance............................................................................................................................266
8.1 What this chapter contains..............................................................................................266
8.2 Periodical maintenance...................................................................................................266
8.3 Cooling fan......................................................................................................................269
8.4 Capacitor........................................................................................................................269
8.4.1 Capacitor reforming...............................................................................................269
8.4.2 Electrolytic capacitor replacement.........................................................................271
8.5 Power cable....................................................................................................................271
9 Communication protocol........................................................................................................272
9.1 What this chapter contains..............................................................................................272
9.2 Modbus protocol introduction ..........................................................................................272
9.3 Application of Modbus.....................................................................................................272
9.3.1 RS485...................................................................................................................272
9.3.2 RTU mode.............................................................................................................275
9.4 RTU command codes and communication data...............................................................278
9.4.1 Command code 03H, reading N words (continuously up to 16 words)....................278
9.4.2 Command code 06H, writing a word......................................................................280