ServoMR-J4Verification pending — cross-check with the official manual
MR-J4 AL.72 — Load-side encoder normal communication error 2
Trip — immediate stop
CAUSE
Why does it occur?
- - The load-side encoder detected an error signal. Detail No. Detail name Cause Check method Check result Action Target 72.1 Load-side encoder data error 1 (
- The encoder detected a high speed/acceleration rate due to an oscillation or other factors. Decrease the loop gain, and then check the repeatability. It is not repeatable. Use the encoder with low loop gain. [A] [B] [WB] [GF] It is repeatabl
REMEDY · Step by step
How to fix it?
Replace the load-side encoder
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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