INVT Goodrive350-19 Series Operation Manual page 9

Goodrive350-19 Series VFD for Crane
8.2 Indications of alarms and faults .......................................................................................... 348
8.3 Fault reset .......................................................................................................................... 348
8.4 Fault history ........................................................................................................................ 348
8.5 Faults and solutions ........................................................................................................... 348
8.5.1 Faults and solutions ................................................................................................. 348
8.5.2 Alarms and solutions ................................................................................................ 359
8.5.3 Other status .............................................................................................................. 361
8.6 Analysis on common faults ................................................................................................. 362
8.6.1 Motor fails to work .................................................................................................... 362
8.6.2 Motor vibrates .......................................................................................................... 363
8.6.3 Overvoltage .............................................................................................................. 364
8.6.4 Undervoltage ............................................................................................................ 364
8.6.5 Motor overheating .................................................................................................... 365
8.6.6 VFD overheating ...................................................................................................... 366
8.6.7 Motor stalls during ACC ............................................................................................ 367
8.6.8 Overcurrent .............................................................................................................. 368
8.7 Countermeasures on common interference ....................................................................... 369
8.7.1 Interference on meter switches and sensors ............................................................ 369
8.7.2 Interference on RS485 communication .................................................................... 370
8.7.3 Failure to stop and indicator shimmering due to motor cable coupling ..................... 371
8.7.4 Leakage current and interference on RCD ............................................................... 371
8.7.5 Live device housing .................................................................................................. 372
9 Maintenance ................................................................................................................................ 374
9.1 What this chapter contains ................................................................................................. 374
9.2 Periodical inspection .......................................................................................................... 374
9.3 Cooling fan ......................................................................................................................... 376
9.4 Capacitor ............................................................................................................................ 377
9.4.1 Capacitor reforming .................................................................................................. 377
9.4.2 Electrolytic capacitor replacement ............................................................................ 378
9.5 Power cable........................................................................................................................ 379
10 Communication protocol ......................................................................................................... 380
10.1 What this chapter contains ............................................................................................... 380
10.2 Modbus protocol introduction ........................................................................................... 380
10.3 Application of Modbus ...................................................................................................... 380
10.3.1 RS485 .................................................................................................................... 380
10.3.2 RTU mode .............................................................................................................. 383
10.4 RTU command code and communication data ................................................................. 386
10.4.1 Command code 03H, reading N words (continuously up to 16 words) ................... 386
10.4.2 Command code 06H, writing a word ...................................................................... 388
10.4.3 Command code 10H, continuous writing ................................................................ 389
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