Inverter overload

What does ALARM 9 mean?

The frequency converter has been operating with more than 100% overload for too long, triggering a warning at 98% and an alarm at 100%. The unit will trip, and cannot be reset until the internal thermal counter falls below 90%. Prolonged overload can severely damage the inverter's power components.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   Monitor the thermal frequency converter load value on the LCP; ensure it decreases when running below the continuous current rating.