Yaskawa MP940 Reference Manual - Manual (Page 372)

MotionSuite™ MP940 Machine Controller Reference Manual Troubleshooting
10-19
A.82
A.82 is the alarm display for an encoder checksum error. 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 x x
Cause Remedy
A Abnormality during encoder memory
check.
² Initialize (setup) the absolute encoder.
² Replace servo amplifier if error occurs frequently.
B Circuit board (1PWB) defective. Replace servo amplifier.
Alarm occurs at power ON A,B
Alarm occurs when SEN
signal is ON
Pn002.2 = 0 or 2
A
Alarm occurs during
operation
A, B