Allen-Bradley 20G11FB015JA0NNNNN

Common Fault Codes

Fault Code 12

HW OverCurrent – The drive output current has exceeded the hardware overcurrent trip level.
Check for a short circuit or ground fault on the output wiring. Verify motor insulation resistance. Inspect for mechanical overload on the driven equipment. Reduce acceleration rate if the fault occurs during ramp-up.

Fault Code 13

Ground Fault – A current path to earth ground has been detected at the drive output.
Disconnect the motor and output wiring and perform an insulation resistance test. Inspect motor windings and output cables for damage. Verify that cable shielding is properly terminated.

Fault Code 3

Power Loss – DC bus voltage dropped below the minimum threshold during operation.
Check input supply voltage for sags or interruptions. Verify input fuses and contactor operation. Inspect input power connections for loose terminals. Adjust the Power Loss Fault Time parameter if brief supply interruptions are expected.

Fault Code 4

UnderVoltage – DC bus voltage has fallen below the undervoltage trip level.
Measure incoming AC supply voltage and verify it is within specification. Check for voltage drops caused by large loads on the same supply. Inspect input line reactors or transformers for faults.

Fault Code 5

OverVoltage – DC bus voltage has exceeded the overvoltage trip level, typically caused by regenerative energy during deceleration.
Increase the deceleration time to reduce regenerative energy. Verify that a dynamic braking resistor is installed and functioning if rapid deceleration is required. Check supply voltage for overvoltage conditions.

Fault Code 7

Motor Overload – The drive's electronic thermal overload model has detected that the motor has been operating above its rated current for an extended period.
Check for mechanical overload on the driven equipment. Verify motor nameplate data entered in drive parameters matches the actual motor. Reduce load or increase motor size if the application consistently exceeds motor rating.

Fault Code 33

Auto Restart Tries – The drive has exceeded the configured number of automatic restart attempts following a fault.
Identify and resolve the root cause fault that triggered the restart attempts. Review the fault queue log in the drive to determine the original fault. Clear the fault manually after corrective action has been taken.

Fault Code 81

Drive Overtemperature – The drive heatsink or internal temperature has exceeded the allowable limit.
Check that enclosure ventilation and cooling fans are operating correctly. Verify ambient temperature is within specification. Inspect heatsink fins for dust or debris blockage. Check that the drive is not operating above its continuous current rating.