Allen-Bradley 20G11NE011AA0NNNNN

Common Fault Codes

Fault Code 12

HW OverCurrent – The drive output current has exceeded the hardware overcurrent trip threshold.
Check motor and output wiring for short circuits or ground faults. Verify motor nameplate data matches drive configuration. Inspect load for mechanical jams or excessive inertia.

Fault Code 13

Ground Fault – A current path to earth ground has been detected in the output wiring or motor.
Disconnect motor and test insulation resistance with a megohmmeter. Inspect output cables for damaged insulation. Replace motor or cabling if insulation breakdown is confirmed.

Fault Code 3

Power Loss – Input power to the drive was lost or dropped below the acceptable threshold during operation.
Check incoming AC supply voltage and connections. Verify upstream fuses, circuit breakers, and contactor operation. Ensure supply voltage is within the rated input range.

Fault Code 4

UnderVoltage – DC bus voltage has dropped below the minimum operating level.
Measure incoming line voltage under load conditions. Check for voltage sags or supply instability. Inspect input fuses and connections for high resistance joints.

Fault Code 5

OverVoltage – DC bus voltage has exceeded the maximum allowable level, typically caused by regenerative energy during deceleration.
Increase deceleration time in drive parameters. Install or verify operation of a dynamic braking resistor. Check for overhauling load conditions.

Fault Code 7

Motor Overload – The drive's electronic overload protection has tripped due to sustained overcurrent condition in the motor.
Verify motor FLA setting in drive parameters matches motor nameplate. Check for mechanical overload on the driven equipment. Allow motor to cool before resetting.

Fault Code 29

Analog Input Loss – An analog input signal configured for a 4-20 mA reference has dropped below 2 mA, indicating a broken wire or signal loss.
Check wiring and connections at the analog input terminals. Verify the signal source device is powered and functioning. Confirm the input signal type configuration matches the connected signal.

Fault Code 71

Adapter Communication Loss – The drive has lost communication with an installed option card or network adapter.
Reseat the option card in its slot and inspect connector pins for damage. Verify network cabling and termination. Check that the network scanner or controller is active and configured correctly.