Mitsubishi FR-A Series- FR-A800, FR-A770/A701, FR-A700, FR-A800-E, FR-A741 Drive
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Mar 30, 2024 7:33 am
Cause : Input phase loss comes when Pr.872 Input phase loss protection selection is enabled ("1") and one of the three-phase power input is lost, the inverter output is shut off. This protective function is not available when Pr.872 is set to the initial value (Pr.872 = "0").
- Check for a break in the cable for the three-phase power supply input.
- Wire the cables properly.
- Repair a break portion in the cable.
