Heatsink Overheat

What does Heatsink Overheat mean?

The temperature of the drive's heatsink has exceeded its safe operating threshold. This usually points to inadequate cooling caused by high ambient temperatures, a malfunctioning or stopped cooling fan, a dirty heatsink, or restricted airflow around the drive. This condition can lead to thermal derating, drive shutdown, and reduced equipment lifespan.

• Cooling fan failure (e.g., seized bearing, broken blades, power supply issue) preventing adequate airflow over the heatsink.
• Blocked heatsink fins due to accumulation of dust, dirt, or debris, restricting airflow.
• Ambient temperature in the drive enclosure exceeds the drive's maximum specified operating temperature (e.g., > 50°C).
• Inadequate ventilation in the control cabinet, leading to heat buildup from the drive and other components.
• Drive operating continuously at or above its rated output current (e.g., Parameter E2-01 and E2-02 not correctly set for motor), generating excessive heat.

Click steps to track your progress.

1. 1

   1. Verify the operational status of the drive's internal cooling fan(s); check for rotation and listen for unusual noises.

2. 2

   2. De-energize the drive and clean any dust or debris from the heatsink fins using compressed air.

3. 3

   3. Measure the ambient temperature inside the control cabinet where the drive is installed and compare it to the drive's specified maximum operating temperature.

4. 4

   4. Check for proper air circulation paths within the cabinet, ensuring intake and exhaust vents are clear and fan filters are clean.

5. 5

   5. Review drive load conditions (e.g., output current, motor speed) via display to confirm it is not continuously operating above its rated capacity.

6. 6

   6. Ensure mounting clearances around the drive (as per installation manual) are maintained for proper airflow.