KUKA Robot codes
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KUKA Robot Controller

Servo/Axis · Basic

Alarm KRC0361

KUKA Robot KRC0361 - ACKN. SYNCHRONISATION ERROR DRIVE <axis>

This alarm indicates that the acknowledgment signal from a specific drive axis has not been received by the KRC controller within the expected synchronization window during motion execution. The controller detected a communication timeout or signal mismatch between the axis drive unit and the main controller, preventing proper coordinated motion of the affected axis.

KUKA RobotServo/AxisBasic

KRC0361

KUKA Robot KRC0361 - ACKN. SYNCHRONISATION ERROR DRIVE <axis>

ACKN. SYNCHRONISATION ERROR DRIVE <axis>

This alarm indicates that the acknowledgment signal from a specific drive axis has not been received by the KRC controller within the expected synchronization window during motion execution. The controller detected a communication timeout or signal mismatch between the axis drive unit and the main controller, preventing proper coordinated motion of the affected axis.

Common Causes

  • Faulty encoder or encoder cable connection on the specified axis
  • Damaged or loose motor power cable or connector on the drive axis
  • Drive unit firmware mismatch or corrupted axis parameter set
  • Communication interface failure between axis drive and controller (serial/CAN bus)
  • Overloaded axis causing delayed or missing acknowledgment response during rapid motion commands

Troubleshooting Steps

  1. 1Identify the specific axis mentioned in the alarm by checking the full alarm message on the teach pendant
  2. 2Power down the robot controller completely and visually inspect all motor cables, encoders, and connectors on the affected axis for damage or looseness
  3. 3Reseat all connector plugs on the axis drive unit and verify secure connections at both the motor and controller interfaces
  4. 4Check the axis parameter configuration in the KRC software using the appropriate diagnostic tools or parameter editor to ensure settings match the physical drive hardware
  5. 5Perform an axis-specific encoder reference run if available in the maintenance menu to re-synchronize the drive with the controller
  6. 6If the alarm persists, contact KUKA service to verify drive unit firmware compatibility or replace the faulty drive module

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