[bherr]

Over the past several months I've been having the problem with the spindle shutting down during cycle run. I have the Contraves motor controller and the Heidenhain TNC 155b controller. Here's what I've done so far:

1. rebuilt the spindle motor
2. upgraded to a 15 HP rotary phase converter as I had a 5 HP
3. upgraded my electrical service to 200 amp
4. installed #8-3 w/ ground from phase converter to CNC

When I upgraded the electrical service the electric line man said that the power fluctuation in my area was pretty bad and I'm thinking this maybe my problem as I understand the Contraves is very sensitive to power changes. anyone out there had this problem in the past and how did you correct it? I'm planning on calling the electric company after Labor day to see what they can do.

thanks
ben