How to fix Zero Return after crash

[burroughs]

Hi, I've got a problem with my Y axis on my Excel 810 after I crashed on the Y axis. I cannot do a zero return without getting an overtravel alarm. When it stops on the limit switch it the machine position shows it to be +.040.

It was kind of a hard crash that "tripped" the Y axis (unfortunately, nothing on the table gave way). While searching I found some information about servo couplings slipping in crash.

Any thoughts about how to diagnose and repair? Any help would be greatly appreciated. Thanks.

[Jarwalcot]

Try moving all the axes to the center of the strokes, power down the machine (source power as well) turn source power on and while holding the "P" & "Can" buttons turn on the control... Hold the buttons until the machine completely powers up... Now try to zero the machine..

[burroughs]

Fantastic! That worked fine. Thanks for the help and the fast reply!

Is that method the kind of catch-all (or at least the starting point) for addressing machine reference issues? I seem to have used that in the past , or something similar, but it's been a long time and not something I retained.
Anyway, thanks again!