i have a 480v 3 phase system with an ac motor used on a hoist application. it has SEW brand VFDs with a regenerative drive. it keeps getting a brake chopper error. we have replaced the brake itself, the encoder for the motor (its only function is to show motor direction. it isnt counting). and we have replaced the VFD and the REGEN drive. have checked continuity to encoder cable.
You will probably get responses from people with “hands-on” experience with both VFDs on hoists and SEW VFDs.
