Does anyone have any experience with Fanuc drive errors? I was getting a high current alarm Al-12 and sent the drive in for repair, now the drive is giving AL20 high current on one phase - checked on startup. The dive has a not ready signal so the control is booting with an alarm state an estop signal.
Even with the motor disconnected the drive reports an AL-20 which makes me think it is the drive and not the install. I have checked the phase voltages and have 208V between phases at the drive.
Can AL-20 be caused by incorrect phase connection order?
have I been duped by the repairer? This error should have been evident when they tested the drive and powered it up. They claimed they power it up but couldn't machine test as there are too many control inputs to simulate.