ServoL7NHFVerified · sol.ls-electric.com
L7NHF W-02 — W-02 LOW_BATT
Warning — monitor· AUTO-RESET
CAUSE
Why does it occur?
Low encoder backup battery voltage (absolute encoder).
REMEDY · Step by step
How to fix it?
Check the battery connection; replace the battery if below 3.3V.
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
Verified · sol.ls-electric.com
Open PDF ↗L7NHF Series AC Servo Drive User Manual (EN, 2017-10-13)
p.375