Hi we are having an issue with an old VDF flat bed lathe throwing a 423 alarm while moving the Z axis. The error was originally only happening in rapid moves. We have checked the machine mechanically for any issues, checked all of the wiring, swapped the master PCB all to no avail. The only thing that we done that has shown any improvement is changing the rapid acceleration parameter from 100 to 400. This seemed to have stopped the error, but it is back and sometimes happens at 50% of rapid. We sent the servo motor out for service as well with no success.

We are struggling to figure this one out as the description of the alarm in the manual doesn't really help us much.

A few details on the system:

6T Control
A06B-6050-H104 Drives
Motors are red cap Fanuc, but have no legible labels on them
DGN 801 never exceeds 2700 and the deviation parameter is set to 10000

Any help would be appreciated!