Emerson unidrive sp - Page 5

Unidrive SP Advanced User Guide 5
Issue Number: 10 www.controltechniques.com
7.2 CT Modbus RTU specification ...........................................................................................................403
7.2.1 MODBUS RTU ........................................................................................................................................................ 404
7.2.2 Slave address .......................................................................................................................................................... 404
7.2.3 MODBUS registers .................................................................................................................................................. 404
7.2.4 Data consistency ..................................................................................................................................................... 405
7.2.5 Data encoding ......................................................................................................................................................... 405
7.2.6 Function codes ........................................................................................................................................................ 405
7.2.7 Extended data types ................................................................................................................................................ 406
7.2.8 Exceptions ............................................................................................................................................................... 407
7.2.9 CRC ......................................................................................................................................................................... 407
7.2.10 Device compatibility parameters .............................................................................................................................. 407
8 Electronic nameplate.................................................................................................408
8.1 Motor object .......................................................................................................................................409
8.2 Performance objects ..........................................................................................................................410
9 Performance...............................................................................................................412
9.1 Digital speed reference ......................................................................................................................412
9.2 Analog reference ...............................................................................................................................412
9.3 Analog outputs ...................................................................................................................................412
9.4 Digital inputs and outputs ..................................................................................................................412
9.5 Current feedback ...............................................................................................................................413
9.6 Bandwidth ..........................................................................................................................................413
9.6.1 Speed loop .............................................................................................................................................................. 413
9.6.2 Current loop ............................................................................................................................................................. 413
10 Rotor Flux Control (RFC) mode................................................................................414
10.1 Introduction ........................................................................................................................................414
10.2 Setting up the RFC mode ..................................................................................................................414
10.3 Further Tuning ...................................................................................................................................414
10.4 Other Considerations .........................................................................................................................414