Good day all. I have a 2006 VM1 Ultimax with Yaskawa VS626 spindle drive. When I try and run the spindle it will only turn very slow and then will fault out with a OL1, which is a Current Over Load. Even if I try to increase the speed manually, I get the same. The control read out shows the input increase but I get nothing at the spindle. Yesterday I put the Spindle drive in digital operation so I could jog the spindle from the drive and received a PGO - Pulse Gen Open Circuit alarm after about 5 secs of turning slow. That one threw me for a loop and must say I didn't expect to see the PGO. I'm not sure if that came from me trying to jog from the panel or is that a legit fault.

Guys, I know its dang near impossible to diagnose stuff like this without being there, but any help would greatly be appreciated. Other then the spindle issues, this is a very nice machine that I want to keep. I don't want to walk away from this machine.