I turned on the mill last night and got the following messages on the screen.

Spindle Inverter Fault Detected
Emergency Stop Released
Z Limit #6 Excceeded Limit
Spindle Inverter Fault Detected

When I released the emergency stop the CT1 Relay did not close.

When you hit the cylce start button the nothing happens. The lube pumps don't even run.

After some searching I have determined that the errors detected do not really exist. For instance all the limit switches are closed as they should be.

The emergency stop button is functioning properly.

I also found that if I put all of the limit switch dip switches on the servo board in the up position (bypass) then the emergency stop relay will pull in and I can jog the axis, however nothing else that requires an input will operate such as the spindle will not run.

I am not sure what else to check to determine narrow down and isolate the problem.

Any help would be appreciated. Gary