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IPE300 series engineering VFD Contents

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

INVT IPE300 Series User Manual

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