Inverter overload

What does 9 mean?

The frequency converter is operating with an excessively high current for too long, nearing its thermal protection limit. The electronic thermal inverter protection counter issues a warning at 98% and an alarm trip at 100%. The unit cannot be reset until the counter drops below 90%, indicating a significant risk of damage to the inverter if prolonged.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   Display and continuously monitor the 'Thermal Drive Load' on the LCP, ensuring operation remains below the frequency converter's continuous current rating.