We have a  Simovert VC  6SE7021-1UB61-Z tripping frequently on F015, P100-1, motor takes jerks at the time of starting, but same motor runs normal with another drive,we have already changed thr CUVC card.

Application-Paper Roll in Paper Mill (motor is directly coupled  with roll)

5.5 kw-motor,500 Volts,

Drive rating

11 amps-VT

10 amps-CT

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Split from Simovert VC F015.