Allen-Bradley · PowerFlex 4 Adjustable Frequency
This fault indicates an issue with the auxiliary input signal. This input is typically configured via parameter A051 or A052 (Digital In1 Sel/Digital In2 Sel) with option 3 ('Aux Fault'). It signals an abnormal condition detected by the auxiliary input circuit.
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Verify all conductors connected to the digital input terminal(s) configured for 'Aux Fault' (P-A051 or P-A052, option 3) are securely terminated and free from damage.
Check the state of the external device connected to the auxiliary input terminal to ensure it is functioning correctly and providing the expected signal.