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KUKA Robot Controller
Overheat/Thermal · Intermediate
KUKA Robot KRC0353 - ACKN. CABINET OVER TEMPERATURE **
The KRC control cabinet has exceeded its maximum allowable internal temperature threshold, triggering a thermal overtemperature alarm. This safety alarm indicates that the internal temperature sensor has detected a condition that could damage electronic components, power supplies, or servo drives if operation continues. The controller will typically halt robot motion and require manual acknowledgment before the alarm can be cleared.
KRC0353
KUKA Robot KRC0353 - ACKN. CABINET OVER TEMPERATURE **
ACKN. CABINET OVER TEMPERATURE **
The KRC control cabinet has exceeded its maximum allowable internal temperature threshold, triggering a thermal overtemperature alarm. This safety alarm indicates that the internal temperature sensor has detected a condition that could damage electronic components, power supplies, or servo drives if operation continues. The controller will typically halt robot motion and require manual acknowledgment before the alarm can be cleared.
Common Causes
- Blocked or restricted ventilation openings in the control cabinet enclosure
- Failure or degradation of the cabinet cooling fan or ventilation system
- Ambient room temperature exceeding the specified operating range for the controller
- Excessive continuous operation without adequate thermal load cycling or rest periods
- Dust accumulation on heat sinks, fan filters, or internal cabinet components
Troubleshooting Steps
- 1Stop robot operation immediately and allow the control cabinet to cool naturally for 30-60 minutes before attempting to restart
- 2Verify that all ventilation openings on the KRC cabinet are unobstructed and that ambient room temperature is within specified limits (typically 5-45°C)
- 3Inspect the cabinet cooling fan for proper operation, noise, vibration, and ensure the fan power connector is securely seated
- 4Clean all air intake filters, heat sink fins, and internal dust accumulation using compressed air or appropriate cleaning methods
- 5Check cabinet door seals and gaskets for integrity, and confirm that all access panels are properly closed to maintain proper airflow paths
- 6If alarm persists after cooling and environmental corrections, contact KUKA service as internal temperature sensor or thermal control circuit may require calibration or replacement
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