Allen-Bradley 20G1ANE289AA0NNNNN

Common Fault Codes

Fault Code 12

HW OverCurrent – The drive output current has exceeded the hardware overcurrent trip threshold.
Check for motor winding short circuits, verify motor cable insulation integrity, ensure the motor is correctly sized for the drive, and check for mechanical overload on the driven equipment.

Fault Code 13

Ground Fault – A current path to earth ground has been detected at the drive output.
Disconnect the motor and cables and perform insulation resistance testing. Inspect motor windings and output cables for insulation breakdown. Replace damaged cables or motor as required.

Fault Code 25

Decel Inhibit – The drive is unable to decelerate at the programmed rate, typically due to excessive bus voltage during regenerative braking.
Increase the deceleration time parameter, install or verify operation of a dynamic braking resistor, or enable the bus voltage regulation feature in the drive parameters.

Fault Code 29

Analog Input Loss – An analog input signal has fallen below the configured loss threshold, indicating a broken or disconnected signal wire.
Check the analog input wiring and signal source. Verify the signal is within the configured range. Configure the analog input loss action parameter to suit the application requirements.

Fault Code 33

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

Fault Code 71

Power Loss – An input power loss or significant voltage sag has been detected on the drive input.
Check incoming AC supply voltage and connections. Verify that all three input phases are present and within specification. Inspect input fuses, contactors, and supply cabling.

Fault Code 81

Communication Loss – The drive has lost communication with the controlling device over the configured network (e.g., EtherNet/IP).
Check EtherNet/IP cable connections and network switch status. Verify the controller is in Run mode and the communication scanner configuration is correct. Check for IP address conflicts on the network.

Fault Code 122

Motor Overtemperature – The motor thermal model or a connected PTC/thermistor has indicated the motor has exceeded its thermal limit.
Allow the motor to cool before restarting. Check motor ventilation and ambient temperature. Verify the motor thermal model parameters are correctly configured for the connected motor.