INVT Goodrive350 Series Operation Manual page 6

Goodrive350 series high-performance multifunction VFD
P91--Customized function group 2 .......................................................................... 237
P92 --Customized function group 3 ......................................................................... 237
P93--Customized function group 4 .......................................................................... 237
7 Troubleshooting ........................................................................................................................ 238
7.1 What this chapter contains ........................................................................................... 238
7.2 Indications of alarms and faults .................................................................................... 238
7.3 Fault reset .................................................................................................................... 238
7.4 Fault history ................................................................................................................. 238
7.5 VFD faults and solutions ............................................................................................... 238
7.5.1 Details of faults and solutions........................................................................... 238
7.5.2 Other state ...................................................................................................... 246
7.6 Analysis on common faults ........................................................................................... 247
7.6.1 Motor fails to work ........................................................................................... 247
7.6.2 Motor vibrates .................................................................................................. 248
7.6.3 Overvoltage ..................................................................................................... 249
7.6.4 Undervoltage ................................................................................................... 249
7.6.5 Unusual heating of motor ................................................................................. 250
7.6.6 VFD overheating .............................................................................................. 251
7.6.7 Motor stalls during ACC ................................................................................... 252
7.6.8 Overcurrent ..................................................................................................... 253
7.7 Countermeasures on common interference .................................................................. 254
7.7.1 Interference on meter switches and sensors .................................................... 254
7.7.2 Interference on communication ........................................................................ 255
7.7.3 Failure to stop and indicator shimmering due to motor cable coupling .............. 256
7.7.4 Leakage current and interference on RCD ....................................................... 256
7.7.5 Live device chassis .......................................................................................... 257
8 Maintenance and hardware fault diagnosis ................................................................................ 258
8.1 What this chapter contains ........................................................................................... 258
8.2 Periodical inspection .................................................................................................... 258
8.3 Cooling fan ................................................................................................................... 260
8.4 Capacitor ..................................................................................................................... 261
8.4.1 Capacitor reforming ......................................................................................... 261
8.4.2 Electrolytic capacitor replacement .................................................................... 262
8.5 Power cable ................................................................................................................. 263
9 Communication ......................................................................................................................... 264
9.1 What this chapter contains ........................................................................................... 264
9.2 Modbus protocol introduction ........................................................................................ 264
9.3 Application of Modbus .................................................................................................. 264
9.3.1 RS485 ............................................................................................................. 264
9.3.2 RTU mode ....................................................................................................... 267
9.4 RTU command code and communication data .............................................................. 270
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