ServoMR-J4Verification pending — cross-check with the official manual
MR-J4 AL.27 — Initial magnetic pole detection error
Trip — immediate stop
CAUSE
Why does it occur?
- - The initial magnetic pole detection was not completed properly. Detail No. Detail name Cause Check method Check result Action Target 27.1 Initial magnetic pole detection - Abnormal termination (
- A moving part collided against the machine. Check if it collided. It collided. Move the start position of the magnetic pole detection. [A] [B] [WB] [GF] It did not collided. Check (2). (
- The wiring o
REMEDY · Step by step
How to fix it?
Check the motor wiring and the magnetic pole detection conditions
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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