[Power sequence board] External AC voltage too low. (for E0x series controllers)

Error handling: Controller power OFF;
Error reset: Possible

Description: The AC external power supply dropped to or below the rated value -20% for 1 to 2 seconds.

External power supply
AC200V
Control power supply AVR
NFB
Remote
AC error signal
AVR
Output cutoff
Main CPU board
CPLD
Power sequence board

Main causes:

1. A problem with the external AC power supply.

2. A problem with wiring or connector connections inside the controller.

3. The AVR is faulty.

4. A problem with the power sequence board.

Countermeasures:

1. Check the external power supply voltage.

2. Check the internal controller wiring and connector connections for problems.

3. Replace the AVR.

4. Replace the power sequence board.