Frequency converter over-temperature

What does 14 mean?

The heatsink temperature of the frequency converter has exceeded 90°C (or 77°C for FR6 690V drives), indicating overheating. An overtemperature warning is issued at 85°C (or 72°C). Prolonged operation at high temperatures significantly reduces the lifespan of power components and can lead to immediate drive shutdown.

Complete Troubleshooting Guide

1. 1

   Verify the correct amount and flow of cooling air to the frequency converter.

2. 2

   Inspect the heatsink for any accumulation of dust or debris and clean it thoroughly.

3. 3

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

4. 4

   Reduce the switching frequency if it is set too high for the current ambient temperature and motor load conditions.