[Servo board XX] AC external power supply abnormality detected. (Servo FPGA) (for E0x series controllers)

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

Content: This error occurs when there is an abnormality in the external AC power supply to the slave controller (multi-axis controller).

Main causes:

1. An AC external power supply abnormality has occurred in the slave controller (multi-axis controller).

2. A problem with the AVR of the slave controller (multi-axis controller).

3. A problem with the servo board.

4. An open circuit in the signal harness between the motherboard and servo board of the slave controller (multi-axis controller).

Countermeasures:

1. Turn the slave controller (multi-axis controller) power OFF and then ON again.

2. Replace the AVR of the slave controller (multi-axis controller).

3. Replace the servo board.

4. Check whether the signal harness between the motherboard and servo board of the slave controller (multi-axis controller) is connected.