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
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