Rockwell Automation 1557 MEDIUM VOLTAGE AC DRIVE - Manual (Page 17)

DESCRIPTION OF OPERATION CHAPTER 5
1557-UM050F-EN-P –June 2013
Introduction ......................................................................................................................... 1
Speed Command ................................................................................................................ 3
Skip Speeds ........................................................................................................................ 5
Speed Ramp ....................................................................................................................... 7
Speed Control ..................................................................................................................... 9
Flux Control ....................................................................................................................... 11
Flux Control for Synchronous Motor .................................................................... 13
Current Control .................................................................................................................. 14
Line Converter Feedback .................................................................................................. 16
Machine Converter Feedback ........................................................................................... 18
Motor Model ...................................................................................................................... 20
Line Converter Protection ................................................................................................. 22
Machine Converter Protection .......................................................................................... 24
Analog Outputs ................................................................................................................. 26
Test Modes ....................................................................................................................... 28
Synchronous Transfer ....................................................................................................... 29
Transfer To Bypass ........................................................................................................... 30
Transfer To Drive .............................................................................................................. 31
Thyristor Diagnostics
Bulletin 1557 Drive ............................................................................................... 33
Bulletin 1557M Mini Drive .................................................................................... 35
Flying Start ................................................................................................................ 36
Tachometer/Encoder Option ............................................................................................. 37