[MCXX] Abnormal DC20V power supply. (Servo board XX) (for E0x series controllers)

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

Description: The 20V IPM (intelligent power module) voltage generated by the power supply unit power board is outside its rated value.

Main causes:

1. An open circuit or poor connection in the AC power harness of the power supply unit.

2. R or S phase loss.

3. A problem with the power supply unit power board.

4. An open circuit or poor connection in the harness inside the power supply unit.

5. The power supply unit control board is faulty.

6. A problem with the power block board.

7. The power regeneration unit is faulty. (E03)

Countermeasures:

1. Check the AC power harness wiring of the power supply unit.

2. Check for R or S phase loss.

3. Replace the power supply unit.

4. Replace the servo amplifier unit.

5. Replace the power regeneration unit. (E03)