ServoMR-J4Verified · sol.ls-electric.com
MR-J4 AL.21 — Encoder normal communication error 2
Trip — immediate stop
CAUSE
Why does it occur?
- - The encoder detected an error signal. Detail No. Detail name Cause Check method Check result Action Target 21.1 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] [RJ010] [GF] It is repeatable. Check (2
REMEDY · Step by step
How to fix it?
Check the cable for breaks and noise, and replace the 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.
Open official manual ↗