Mitsubishi FR-A Series- FR-A800, FR-A770/A701, FR-A700, FR-A800-E, FR-A741 Drive
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Apr 01, 2024 4:58 am
Cause : Parameter write error comes when parameter setting was attempted while Pr.77 Parameter write selection is set to disable parameter write. Overlapping range has been set for the frequency jump.
Overlapping range has been set for the adjustable 5 points V/F. The PU and inverter cannot make normal communication. IPM parameter initialization was attempted while Pr.72 = "25".
- Check the Pr.77 Parameter write selection setting.
- Check the settings of Pr.31 to Pr.36 (frequency jump). (
- Check the settings of Pr.100 to Pr.109 (adjustable 5 points V/F).
- Check the connection of PU and the inverter.
- Check the Pr.72 PWM frequency selection setting. A sine wave filter cannot be used under PM sensorless vector control.
