Cause: Keypad communications error comes when communications error occurred between the standard keypad or the multi-function keypad and the inverter.

er2 fault in fuji FRENIC MEGA drive indicates a Keypad Communications Error. This means he drive has lost communication with the keypad (operator panel).

• Check continuity of the cable, contacts and connections.
• Re-insert the connector firmly.
• Check the mounting condition of the front cover.
• Replace the keypad with another one and check whether a keypad communications error ( er2 ) occurs.