I just bought an AMC B30A40 drive off ebay.
Servo Drives by ADVANCED Motion Controls

I connected DC+ to the hi voltage power and ground to ground. No other connections. When powered, the amp comes up in servo fault (red light)

How do i clear the fault? Is the drive bad?

I do this step all the time with the brushed amps and a good drive comes up green. Then I put a dc servo on (no encoder) and go to test offset to see if it will run the motor. I read you can set this amp to run a brush motor by changing the phase dip switch. So, I plan to use this on a brush servo and do my normal check out.

Karl