Frequency converter over temperature

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The frequency converter's heat sink is overheated, signifying insufficient cooling. Potential causes include blocked cooling airflow, high ambient temperature, accumulation of dust on the heatsink, or a switching frequency that is set too high in relation to the ambient conditions and motor load.

• Overheating of the converter heatsink.
• Ambient temperature too high.
• Cooling fan failure or malfunction.
• Blocked ventilation grilles or dust accumulation.
• Excessive switching frequency or high load operation (P1-06).

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1. 1

   Verify that the cooling air flow around the frequency converter is not obstructed.

2. 2

   Check the ambient temperature around the drive and ensure it is within the specified operating limits.

3. 3

   Clean any dust and debris from the heatsink fins to improve heat dissipation.

4. 4

   Review the switching frequency setting and consider reducing it if it is excessively high for the current ambient temperature and motor load conditions.