Allen-Bradley 20F11ND096JA0NNNNN

Common Fault Codes

Fault Code 12

HW OverCurrent – The drive output current has exceeded the hardware overcurrent trip threshold, indicating a sudden high-current condition.
Check motor and output wiring for short circuits or ground faults. Verify motor nameplate data matches drive parameter settings. Inspect load for mechanical jams or sudden load spikes.

Fault Code 13

Ground Fault – A current path to earth ground has been detected at the drive output, typically in the motor cable or motor windings.
Disconnect motor cables and test insulation resistance of motor and cables to ground. Replace damaged cables or motor if insulation has failed. Ensure cable shielding is properly terminated.

Fault Code 25

Decel Inhibit – The drive is unable to decelerate at the programmed rate because the DC bus voltage has exceeded the overvoltage threshold during braking.
Increase the deceleration time in the drive parameters. If fast deceleration is required, install a dynamic braking resistor kit. Verify that the bus voltage regulation parameter is enabled.

Fault Code 29

Analog Input Loss – The analog input signal (typically 4-20 mA or 0-10V) has been lost or fallen below the minimum threshold.
Check the analog signal source and wiring continuity to the drive analog input terminals. Verify the signal source is powered and outputting within the expected range. Review the analog input loss fault action parameter settings.

Fault Code 33

Auto Rstrt Tries – The drive has attempted to automatically restart after a fault the maximum number of times without successfully clearing the fault condition.
Identify and resolve the underlying fault that is causing repeated trips before re-enabling auto restart. Review the fault queue log on the HIM for the root cause fault code. Correct the process or mechanical issue before resetting.

Fault Code 63

SW OverCurrent – A software-level overcurrent condition has been detected, where output current exceeded the programmed software overcurrent limit.
Verify motor load is within rated capacity. Check for mechanical overload conditions on the driven equipment. Review and adjust the software overcurrent trip level parameter if the default setting is not appropriate for the application.

Fault Code 70

Power Unit – An internal power structure fault has been detected, which may indicate a failed IGBT, gate driver issue, or internal hardware fault within the drive power section.
Cycle power to the drive and monitor for recurrence. If the fault persists, the drive power section requires inspection and likely replacement of the power module. Contact a qualified repair facility for internal component-level diagnosis.

Fault Code 100

Parameter Checksum – The drive has detected a checksum error in stored parameter data, indicating possible data corruption in non-volatile memory.
Restore parameters from a previously saved backup using the HIM or DriveExecutive/Studio 5000 software. If no backup is available, reset parameters to factory defaults and re-enter all application-specific settings. Replace the control board if the fault recurs after parameter restore.