What causes KUKA Robot alarm KRC0055?

Encoder or feedback sensor malfunction or loss of signal on the affected axis. Servo drive fault or insufficient drive output voltage/current capacity. Mechanical friction, binding, or load jamming on the axis. Loose or damaged coupling, gear wear, or transmission slippage between motor and axis. Incorrect axis configuration parameters, tuning values, or control loop gains in the KRC system data.

How do I fix KUKA Robot alarm KRC0055?

1. Identify which axis @P1@ is affected and verify the alarm details in the KRC diagnostic display or teach pendant error log 2. Check the encoder connector and signal cable for the affected axis for loose connections, corrosion, or physical damage 3. Perform a manual jog test on the axis to assess mechanical movement smoothness and listen for grinding or unusual sounds indicating mechanical issues 4. Verify the servo drive status indicators and input/output signals using the KUKA control system diagnostics; check for drive enable signals and power supply voltage 5. Review the axis-specific PID tuning parameters and control loop configuration in the robot's system data files; reset to factory defaults if parameters appear corrupted 6. If available, perform a servo drive parameter reset or firmware update; if the fault persists, the servo drive or encoder module may require replacement

KUKA Robot codes

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KUKA Robot Controller

System · Basic

Alarm KRC0055

KUKA Robot KRC0055 - MONITORING OF THE ACTUAL VELOCITY @P1@

This alarm indicates a fault detected in the velocity monitoring feedback control loop for axis @P1@, where the actual measured velocity deviates significantly from the commanded velocity setpoint. The controller has detected that the axis is unable to achieve or maintain the commanded velocity within acceptable tolerance limits, suggesting a problem with the servo drive response, encoder feedback, or mechanical coupling.

KUKA RobotSystemBasic

KRC0055

KUKA Robot KRC0055 - MONITORING OF THE ACTUAL VELOCITY @P1@

MONITORING OF THE ACTUAL VELOCITY @P1@

Common Causes

Encoder or feedback sensor malfunction or loss of signal on the affected axis
Servo drive fault or insufficient drive output voltage/current capacity
Mechanical friction, binding, or load jamming on the axis
Loose or damaged coupling, gear wear, or transmission slippage between motor and axis
Incorrect axis configuration parameters, tuning values, or control loop gains in the KRC system data

Troubleshooting Steps

1Identify which axis @P1@ is affected and verify the alarm details in the KRC diagnostic display or teach pendant error log
2Check the encoder connector and signal cable for the affected axis for loose connections, corrosion, or physical damage
3Perform a manual jog test on the axis to assess mechanical movement smoothness and listen for grinding or unusual sounds indicating mechanical issues
4Verify the servo drive status indicators and input/output signals using the KUKA control system diagnostics; check for drive enable signals and power supply voltage
5Review the axis-specific PID tuning parameters and control loop configuration in the robot's system data files; reset to factory defaults if parameters appear corrupted
6If available, perform a servo drive parameter reset or firmware update; if the fault persists, the servo drive or encoder module may require replacement

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