KUKA Robot codes
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KUKA Robot Controller

Servo/Axis · Basic

Alarm KRC0328

KUKA Robot KRC0328 - ACKN. SYNCHRONIZATION ERROR WITH DSE <axis number>

The DSE unit responsible for controlling the specified axis has failed to receive a feed command value within the expected interpolation cycle time while servo control remains active. This indicates a breakdown in real-time communication between the KRC4 controller and the drive electronics.

KUKA RobotServo/AxisBasic

KRC0328

KUKA Robot KRC0328 - ACKN. SYNCHRONIZATION ERROR WITH DSE <axis number>

ACKN. SYNCHRONIZATION ERROR WITH DSE <axis number>

The DSE unit responsible for controlling the specified axis has failed to receive a feed command value within the expected interpolation cycle time while servo control remains active. This indicates a breakdown in real-time communication between the KRC4 controller and the drive electronics.

Common Causes

  • Intermittent connection loss on the high-speed serial interface connecting KRC4 to DSE
  • Corrupted or missing feed command packets due to EMI in the control cabinet
  • Real-time operating system priority conflict preventing timely command transmission
  • DSE unit in an undefined state requiring a controller power cycle and re-initialization
  • Defective servo amplifier module within the DSE causing command rejection or timeout

Troubleshooting Steps

  1. 1Immediately stop the robot motion and switch to teach mode using the KUKA smartPAD
  2. 2Check all DSE communication cables for bent pins, corrosion, or loose connectors and reseat connections firmly
  3. 3Power cycle the KRC4 controller completely by switching off the main circuit breaker for 30 seconds
  4. 4Review the system diagnostics log in the controller memory to identify patterns in DSE communication failures
  5. 5Verify axis servo parameters are correctly loaded in the KRC4 configuration using WorkVisual parameter editor
  6. 6If the fault recurs on the same axis, the DSE servo amplifier module must be replaced and the axis must be re-tuned

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