InverterFR-A800Verification pending — cross-check with the official manual
FR-A800 E.P24 — 24 VDC power fault
Trip — immediate stop
CAUSE
Why does it occur?
- • When the 24 VDC power output from the PC terminal is shorted, this function shuts off the power output
- At this time, all external contact inputs switch OFF
- The inverter cannot be reset by entering the RES signal
- To reset it, use the operation panel, or switch power OFF, then ON again. • Check f
REMEDY · Step by step
How to fix it?
- • Repair the short-circuited portion. • Supply the power at 24 V. (If the power with insufficient voltage is supplied to the 24 V input circuit for a long time, the inverter internal circuit may heat up
- Although it will not damage the inverter, supply power at the correct voltage.)
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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