[Servo board XX](Regenerative amplifier (No.XX)) Overcurrent detected. (for E0x series controllers)

Error handling: Motor power OFF.
Error reset: Possible.

Description: While the servo is ON, the feedback current from the current detection circuit of the power module for the power regeneration axis (JT6 on the E03 controller) exceeded approximately 140A.

Servo FPGA
Current feedback
Servo board
PWM
Current detection
Circuit
IPM
Reactor unit
External power supply
Power block for power regeneration axis
Controller

Main causes:

1. A problem with the power block for the power regeneration axis.

2. A problem with the servo board.

3. A short circuit between the U, V, or W phase and ground in the wiring between the power block reactor unit for the power regeneration axis, the power regeneration unit, and the external power supply. Or faulty wiring in this circuit.

4. A problem with the reactor in the reactor unit (phase-to-phase short circuit or ground fault).

5. The power regeneration unit is faulty.

Countermeasures:

1. Replace the servo amplifier unit.

2. Check the wiring between the power module for the power regeneration axis, reactor unit, power regeneration unit, and external power supply for short circuits, ground faults, open circuits, or poor wiring. Replace the reactor unit or harness if necessary.

3. Replace the power regeneration unit.