Originally Posted by
maver1ck
You need to get a set of electrical prints for your machine....there were differences based on vintage/drive package. The VMCs and I believe at least some of the TCs used a 90VDC brake not 24VDC. Regardless of the voltage, with no power the brake is engaged so the axis is held in position. With power the brake releases so the servo motor can move the axis.
There were also variations of the machines with no aecondart feedback, scales, or a 2ndary rotary encoder for position feedback. You really need to figure out which setup your machine uses to troubleshoot properly.