The safety circuit between the power sequence board and servo board XX is open. (for E0x series controllers)

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

Content: Poor safety circuit wiring connection between the power sequence board and servo board.

Main causes:

1. An open circuit or poor connection in the harness between the motherboard and servo board.

2. A problem with the power sequence board.

3. A problem with the servo board.

4. The motherboard is faulty.

Countermeasures:

1. Check the harness between the motherboard and the servo board.

2. Replace the power sequence board.

3. Replace the servo board.

4. Replace the motherboard.

Reference: Select <Display 1> → → <Safety Circuit Monitor 2> on the teach pendant screen to check the safety circuit status. For details of safety circuit input monitoring, refer to the Operation Manual.