Cause : Out of frequency range comes when the output frequency has reached its Output frequency low limit (parameter 201) or Output frequency high limit (parameter 202).

1. If the frequency converter is in Process control, closed loop (parameter 100), the warning will be active in the display.
2. If the frequency converter is in another mode than Process control, closed loop, bit 008000 Out of frequency range in extended status word will be active, while there will be no warning in the display.