E.PAn Error Troubleshooting
An E.PAn Error on a drive Keypad typically indicates a communication failure between the Keypad and Control Board.
- If this error is being displayed permanently, check the cable connection between the Keypad and Control Board.
- If this error is being displayed momentarily, this could be due to the DC Bus Voltage dropping below 100V – this could typically happen when using a Solar Drive where the Dormancy Voltage (Sleep) is set very low, creating a scenario where the drive is still busy decelerating before reaching the Dormancy Voltage (which would trigger Error Ar.01) while the DC Bus Voltage already dropped below 100V, which would then cause the communication error being displayed on the keypad. This could also be caused by a poor connection within the PV Array supplying the drive with power (sudden voltage drop occurs when a load is added).
