Allen-Bradley 20F11FD011AA0NNNNN

Common Fault Codes

Fault Code 12

HW OverCurrent – The drive output current has exceeded the hardware overcurrent trip threshold.
Check for a short circuit or ground fault on the motor cables. Verify motor insulation resistance. Inspect the drive output transistors for damage. Reduce acceleration rate or load inertia.

Fault Code 13

Ground Fault – A ground fault has been detected on the drive output or motor winding.
Disconnect the motor and measure insulation resistance between each phase and ground. Replace motor or cable if insulation is compromised. Check for damaged wiring at the drive output terminals.

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 at all three phases. Inspect fuses, contactors, and supply wiring. Verify that input voltage is within the 380–480V AC specification.

Fault Code 4

UnderVoltage – DC bus voltage has fallen below the minimum operating level.
Measure input line voltage and verify it is within specification. Check for voltage sags or supply interruptions. Inspect the drive's input rectifier and DC bus capacitors.

Fault Code 5

OverVoltage – DC bus voltage has exceeded the maximum allowable level, typically caused by regenerative energy during deceleration.
Increase deceleration time to reduce regenerative energy. Verify that the dynamic braking resistor (if fitted) is correctly sized and connected. Check supply voltage for overvoltage conditions.

Fault Code 7

Motor Overload – The drive's electronic overload protection has tripped due to sustained overcurrent to the motor.
Check motor nameplate data and verify that motor FLA parameter is correctly programmed. Reduce load or duty cycle. Inspect mechanical load for binding or excessive friction.

Fault Code 29

Analog Input Loss – An analog input signal configured for process feedback or speed reference has been lost or fallen below the minimum threshold.
Check wiring and signal source at the analog input terminals. Verify that the signal source is powered and operating correctly. Review the analog input loss action parameter configuration.

Fault Code 33

Auto Restart Tries – The drive has exceeded the maximum number of automatic restart attempts following a fault.
Identify and resolve the underlying fault that triggered the restart attempts. Review the fault queue log for the root cause fault code. Reset the drive manually after correcting the fault condition.