Cause : Inverter overload comes when the frequency converter is about to cut out because of an overload (too high current for too long). The counter for electronic, thermal inverter protection gives a warning at 98% and trips at 100%, while giving an alarm.

1. The frequency converter cannot be reset until the counter is below 90%.
2. The fault is that the frequency converter is overloaded by more than 100% for too long.
3. Compare the output current shown on the LCP with the frequency converter rated current.
4. Compare the output current shown on the LCP with measured motor current.
5. Display the Thermal Drive Load on the LCP and monitor the value.
6. When running above the frequency converter continuous current rating, the counter should increase.
7. When running below the frequency converter continuous current rating, the counter should decrease.