Cause : Keypad has been removed when the drive is receiving the speed reference from the keypad comes when the Keypad Mode trip indicates that the drive is in keypad mode [Reference Selector (01.014) = 4 or 6 or M2 reference selector (21.003 = 4 or 6 if motor map 2 is selected] and the keypad has been removed or disconnected from the drive.

1. Re-install keypad and reset.
2. Change Reference Selector (01.014) to select the reference from another source.