The frequency converter is sensitive to heat. Overheating causes trips and shortens component life, so cooling and cleanliness are essential.
Common Causes
- Blocked cooling fans or filters
- Dust buildup on heatsinks
- High ambient temperature
- Overload or incorrect drive sizing
How to Fix
- Clean fans and heatsinks on schedule
- Improve cabinet ventilation
- Verify the load is within drive rating
- Check the temperature alarm setting
Prevention
Keep the electrical cabinet cool and dust-free, and monitor the converter temperature trend.