Allen-Bradley 20G1ANE063AN0NNNNN

Common Fault Codes

Fault Code 12

HW OverCurrent – Hardware overcurrent trip. The output current has exceeded the drive's hardware current limit.
Check for motor winding short circuits, verify motor cable insulation, ensure load is not mechanically jammed, and confirm correct motor nameplate data is programmed.

Fault Code 13

Ground Fault – Excessive current detected flowing to ground on the output side of the drive.
Inspect motor cables and motor windings for insulation breakdown to ground. Disconnect motor and test insulation resistance. Replace damaged cables or motor as required.

Fault Code 25

Decel Inhibit – The drive is unable to decelerate at the programmed rate due to excessive bus voltage.
Increase deceleration time, enable the bus voltage regulation feature, or install a dynamic braking resistor to absorb regenerative energy.

Fault Code 29

Analog Input Loss – An analog input signal has fallen below the configured loss threshold (e.g., 4 mA signal lost on a 4-20 mA input).
Check analog signal wiring and source device. Verify signal levels at the drive terminals. Configure the analog input loss action parameter as appropriate for the application.

Fault Code 33

Auto Restart Tries – The drive has exceeded the maximum number of automatic restart attempts after a fault.
Identify and resolve the underlying fault that triggered repeated restarts. Review fault queue history, correct the root cause, then manually clear the fault and reset the auto-restart counter.

Fault Code 71

Power Loss – Input power loss has been detected. The DC bus voltage has dropped below the minimum threshold.
Check incoming AC supply voltage and connections. Verify fuses and circuit breakers on the input side. Inspect for loose terminal connections at the drive input terminals.

Fault Code 81

Drive Overload – The drive thermal model has detected that the drive is operating beyond its rated capacity over time.
Reduce load on the motor, increase acceleration/deceleration times, verify ambient temperature is within specification, and check that the drive is correctly sized for the application.

Fault Code 100

Parameter Checksum – A checksum error has been detected in the drive parameter memory, indicating possible data corruption.
Reload parameters from a saved backup file using Connected Components Workbench or DriveExplorer. If the issue persists, perform a factory reset and reprogram the drive.