hello,
check following things
1. main drive motor encoder
2. encoder cable and plugs
3. armature and field supply
4. D.C drive input supply
5. brake is releasing?
I need more details about the trouble you are having with the machine. You may have other errors from UWR/RTR or the machine control system.
Yes this is a new installationIs this a new installation or did the machine stop during operation?