InverterFR-F800Verification pending — cross-check with the official manual
FR-F800 E.LF — Output phase loss
Trip — immediate stop
CAUSE
Why does it occur?
The inverter trips if one of the three phases (U, V, W) on the inverter's output side (load side) is lost. Check the wiring. (Check that the motor is normally operating.) Check that the capacity of the motor used is not smaller than that of the inverter. Check if a start command is given to the inverter while the motor is coasting. (PM motor control)
REMEDY · Step by step
How to fix it?
- Wire the cables properly. Input a start command after the motor stops
- Alternatively, use the automatic restart after instantaneous power failure/flying start function (page 5-417). (PM motor control)
Do not reset repeatedly before identifying the cause. Repeated resets while ignoring a trip/alarm can cause secondary damage (IGBT failure, motor winding damage, etc.).
SOURCE
Related manual page
Summary based on the official Mitsubishi Electric manual. For accurate and complete information, always consult the official manual.
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