Hi,
I have a GN 6Mb with Fanuc Black Cap Servos.
I had run a series of programs all morning with no problems.
I shut the machine down for a couple hours while I did some
programming in Gibbs.
When I powered the machine back up it booted fine.
but when I started to bring the spindle down to check my origins
the Z started jittering and then the control threw a **Y** axis
resolver error (notice I said Y, not Z).
After first getting all axis off the limits I cleared the alarm by
powering back up with the 'reset/delete' combo.
Now there is no Y axis issue at all but the jittery Z persists.
Basically if I move the Z in 1/10000 increments it is OK.
But as I try to move it faster by say, using the 10 thou increment
it will get progressively more jittery the faster I try to move it,
until a 401 alarm is finally thown.
Is there something to clean on Black Cap serrvos (Model 5)?
Commuters and such?
Or does this sound like a voltage or board problem.
As I said it came on very suddenly.
All parameters have been verified so it is not a BMU problem.
Help! I'm in the middle of a job.