Heat sink temperature too high, KPP/KSP (axis) Overtemperature

What does 26112 mean?

Overtemperature detected specifically on the heat sink of the KPP/KSP device or associated axis in the KUKA KR C4/KR C4 CK controller. This indicates inadequate heat dissipation from critical power components, which can lead to component damage if not addressed.

• High ambient temperature around the KR C4/KR C4 CK cabinet.
• Excessive load in the robot program leading to sustained high power dissipation.
• Accumulation of dirt or dust in the cooling circuit, directly affecting heat sink efficiency.
• Malfunction of the cabinet cooling fan.
• Improper installation site with blocked ventilation slits or insufficient clearance around the controller.
• Internal issue within the KSP (KUKA Servo Pack) module.
• Internal issue within the KPP (KUKA Power Pack) module.

Click steps to track your progress.

1. 1

   Verify the cabinet cooling fan is operational, free from obstructions, and providing adequate airflow.

2. 2

   Measure and ensure the ambient temperature around the KR C4/KR C4 CK controller cabinet is within the manufacturer's specified operating limits.

3. 3

   Evaluate the robot program for excessive load or duty cycle and reduce if possible.

4. 4

   Inspect the cooling circuit (especially heat sinks and ventilation slits) for dirt, dust, or blockages and clean thoroughly.

5. 5

   Check the installation site for proper ventilation, ensuring all ventilation slits are clear and adequate clearance is maintained around the cabinet.

6. 6

   Perform a power cycle (Power Off / Power On) of the KR C4/KR C4 CK controller to reinitialize the drive bus.