Need Help!- Enshu Yuasa AccuMill 1547 with Fanuc 3M

[fixer2]

I keep getting a Z overtravel alarm. While attempting a reference return it will go above zero and trip out on a servo reading before hitting the overtravel limit switch..
How do you calibrate this axis?

[Chrliev]

Please check the limit switch, its resistance should change as the dog moves its arm past the contact point...

[fixer2]

Which limit switch? I have a upper a lower and a slowdown on the left side.

[Chrliev]

Well, since the Z axis is probably over travelling going in the up (Z+) direction, I would check all of the limit swithces that it is hitting going up (in direction of the alarm) first.