Quote Originally Posted by suesi34e View Post
As for an update on what happened I was stood right in front of the mill it started to go south and before I got to hit the E Stop the electric supply tripped and I was in the dark.
That's pretty big detail you left out there Suesi sue.!! If you don't give all the details then it makes helping very difficult.!

When the Machine went wrong did the Spindle jam.? Being a DC motor this is about the only thing that would possibly hit the breaker hard as the converter ramps up the amps to try and maintain speed. Steppers would just stall and trip the drive rather than mains elecy.

Still doesn't explain why it went Awol but would explain the trip.!