Yaskawa MP940 Reference Manual - Manual (Page 388)

MotionSuite™ MP940 Machine Controller Reference Manual Troubleshooting
10-35
A.E2
A.E2 is the alarm display for an option WDC error. The alarm output
appears below.
Note: The indicates the output transistor is ON; 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 Option unit defect. Replace option unit.
Alarm occurs at power ON A