HD2 Series Inverter Contents
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7.7 Countermeasures on common interference .................................................................. 295
7.7.1 Interference on meter switches and sensors .................................................... 295
7.7.2 Interference on communication ........................................................................ 296
7.7.3 Failure to stop and indicator shimmering due to motor cable coupling .............. 297
7.7.4 Leakage current and interference on RCD ....................................................... 297
7.7.5 Live device chassis .......................................................................................... 298
8 Maintenance and Hardware Fault Diagnosis ............................................................................. 299
8.1 What this chapter contains ........................................................................................... 299
8.2 Periodical inspection .................................................................................................... 299
8.3 Cooling fan ................................................................................................................... 301
8.4 Capacitor ..................................................................................................................... 302
8.4.1 Capacitor reforming ......................................................................................... 302
8.4.2 Electrolytic capacitor replacement .................................................................... 303
8.5 Power cable ................................................................................................................. 304
9 Communication ......................................................................................................................... 305
9.1 What this chapter contains ........................................................................................... 305
9.2 Modbus protocol introduction ........................................................................................ 305
9.3 Application of Modbus .................................................................................................. 305
9.3.1 RS485 ............................................................................................................. 305
9.3.2 RTU mode ....................................................................................................... 308
9.4 RTU command code and communication data .............................................................. 311
9.4.1 Command code 03H, reading N words (continuously up to 16 words) .............. 311
9.4.2 Command code 06H, writing a word................................................................. 313
9.4.3 Command code 08H, diagnosis ....................................................................... 313
9.4.4 Command code 10H, continuous writing .......................................................... 314
9.4.5 Data address definition .................................................................................... 315
9.4.6 Fieldbus scale ................................................................................................. 319
9.4.7 Error message response .................................................................................. 320
9.4.8 Read/Write operation example ......................................................................... 322
9.5 Common communication faults ..................................................................................... 326
Appendix A Expansion Cards ....................................................................................................... 328
A.1 Model definition ............................................................................................................ 328
A.2 Dimensions and installation .......................................................................................... 332
A.3 Wiring .......................................................................................................................... 334
A.4 IO expansion card (HD2-E-IO) ..................................................................................... 335
A.5 IO expansion card 2 (HD2-E-IO2) ................................................................................ 337
A.6 Programmable expansion card (HD2-E-PLC) ............................................................... 339
A.7 Communication cards .................................................................................................. 342
A.7.1 Bluetooth communication card (HD2-E-BTP) and WIFI communication card
(HD2-E-WFP) ........................................................................................................... 342
A.7.2 PROFIBUS-DP communication card (HD2-E-PDP) .......................................... 344
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