Yaskawa MP940 Reference Manual - Manual (Page 381)

Troubleshooting MotionSuite™ MP940 Machine Controller Reference Manual
10-28
A.C8
A.C8 is the alarm display for absolute encoder clear errors and multi-turn
limit setting errors. The alarm output appears below.
Note: The x indicates the output transistor is OFF (alarm state).
Status when Alarm Occurred
Alarm Output
Alarm Code Output ALM Output
ALO1 ALO2 ALO3
>_ x › _ x
Cause Remedy
A Encoder defective. Replace servo motor.
B Servo amplifier defective. Replace servo amplifier.
Alarm occurs at power ON A, B
Multi-turn clear encoder
alarm occurs at reset
A, B