Still fighting a Persistant Y-axis OverVoltage error. The machine will run fine for hours at a time, then suddenly alarm the Y-axis and shuts down.
But here is a consistent symptom. Yet completely random. It ONLY happens during the first programmed Z-axis rapid/plunge move when the spindle is running HIGH RPM. Never at low RPM. And never consitently. Only 1 out of 20 times or so....Vibration? Current drop?
Mori first suggests the Y-axis motor harness is chafing somewhere. So far no evidence of this. More inspection required. Second suggestion, (by everyone) Bad brushes/armature. Inspected & cleaned (D.C. Servos) Next step, get the motors armature re-surfaced., if only we could finish the current job, first.
Will swap x & y cables to see if the problem moves, next. (cable or motor?)
Any more ideas?
ca