Mitsubishi error - interesting (to me)
S01 Servo Error being reported as an error 10 (0010) and in X.
This is an undervoltage error.
Oddly, all incoming voltages are good. Checked numerous times and points.
This would seem to point to an error on the servo drive, but noone seems to know WHAT.
I've seen some talk of it possibly being an opto isolator issue, but not which OI.
Also, I cannot seem to find anything that list what the voltages at the terminals of the servo card should be so that I can test at that point.
An undervoltage error could also be translated as an overamperage error. If something is dragging (like a seal plate, etc.), the servo needs to draw more amperage to move the axis, which in turn lowers the voltage to the servo.
You are checking voltages when the machine is sitting still, correct? Try checking it while moving.
.... annnnnnnnnnnnnd.....we're done.
It was indeed, a lowly little 46¢ opto isolator.
So, for the record (and anyone searching in the future) -
If you are getting a S01 Servo Alarm :PR with an actual error code of 0010 (error 10 - undervoltage) and you have verified that all your incoming voltages are good, fuses are good, and wiring is good, start with checking OI1 on the RG221 board of the servo drive. It costs 46¢ to replace with current part number PS2501 (A) and can possibly get you back in business quickly.