ServoMR-J4Verified · sol.ls-electric.com
MR-J4 AL.24 — Main circuit error (ground fault)
Trip — immediate stop
CAUSE
Why does it occur?
Ground fault at the U/V/W output or motor winding
REMEDY · Step by step
How to fix it?
Measure the motor insulation and check the output cable insulation
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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