Astraada DRV-28A inverters
iii
5.5 What this chapter contains ..............................................................................................144
5.6 Function parameter list....................................................................................................144
7 Troubleshooting......................................................................................................................258
7.1 What this chapter contains ..............................................................................................258
7.2 Indications of alarms and faults .......................................................................................258
7.3 Fault reset.......................................................................................................................258
7.4 Fault history ....................................................................................................................258
7.5 VFD faults and solutions .................................................................................................258
7.6 Analysis on common faults..............................................................................................267
7.7 Countermeasures on common interference .....................................................................273
8 Maintenance............................................................................................................................278
8.1 What this chapter contains ..............................................................................................278
8.2 Periodical inspection .......................................................................................................278
8.3 Cooling fan......................................................................................................................280
8.4 Capacitor ........................................................................................................................281
8.5 Power cable....................................................................................................................283
9 Communication.......................................................................................................................284
9.1 What this chapter contains ..............................................................................................284
9.2 Modbus protocol introduction ..........................................................................................284
9.3 Application ......................................................................................................................284
9.4 RTU command code and communication data.................................................................290
9.5 Common communication faults .......................................................................................308
Appendix A Expansion cards....................................................................................................309
A.1 Model definition ..............................................................................................................309
A.2 Dimensions and installation ............................................................................................316
A.3 Wiring.............................................................................................................................319
A.4 IO expansion card—— AS28INU0001 ............................................................................319
A.5 Programmable expansion card—— AS28ENC0003........................................................321
A.6 Communication card function description........................................................................324
A.7 PG expansion card function description ..........................................................................333
Appendix B Technical data........................................................................................................349
B.1 What this chapter contains..............................................................................................349
B.2 Derated application.........................................................................................................349
B.3 Grid specifications ..........................................................................................................350
B.4 Motor connection data ....................................................................................................350
5.7 See 3.8 Type designation key..........................................................................................350
B.5 Application standards......................................................................................................352
B.6 EMC regulations.............................................................................................................352
Appendix C Dimension drawings..............................................................................................354
C.1 What this chapter contains..............................................................................................354