OH4 Heatsink temperature > C0122

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The heatsink temperature has exceeded the specific threshold value set in parameter C0122. This is an advance warning for heatsink overheating, which can be caused by high ambient temperatures (Tu > +40°C or +50°C), a dirty heatsink, or an incorrect mounting position. This monitoring can be switched off via C0582.

• Control cabinet ambient temperature (Tu) is high, pushing the drive's heatsink temperature close to the warning threshold set in C0122.
• Partial blockage of heatsink fins with dust or debris, slightly reducing cooling efficiency without completely stopping airflow.
• Drive cooling fan operating at reduced speed or intermittently, not providing optimal airflow.
• Drive operating continuously near its maximum rated current, generating more heat than usual.
• Parameter C0122 (Heatsink temperature warning threshold) is set too aggressively (too low) for the application's operating conditions.

Klikk på steg for å spore fremgangen.

1. 1

   Measure the control cabinet ambient temperature (e.g., with a thermometer) and compare it to the drive's specification.

2. 2

   Clean the drive's heatsink fins with compressed air to ensure maximum surface area for heat dissipation.

3. 3

   Monitor the drive's internal cooling fan operation, checking for consistent rotation and lack of obstruction.

4. 4

   Review parameter C0122 (Heatsink temperature warning threshold) and consider raising it slightly if current operating conditions are normal.

5. 5

   Ensure adequate ventilation in the control cabinet, checking fan filters and ensuring sufficient clearance around the drive for airflow.