Mitsubishi FR-A Series- FR-A800, FR-A770/A701, FR-A700, FR-A800-E, FR-A741 Drive
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Mar 30, 2024 4:47 am
Cause : Brake transistor alarm detection comes when the inverter trips if a fault due to damage of the brake transistor and such occurs in the brake circuit. In such a case, the power supply to the inverter must be shut off immediately.
- Appears when an internal circuit fault occurred for IP55 compatible models.
- Reduce the load inertia.
- Check that the brake duty is proper.
- Replace the inverter.
