Yaskawa MP940 Reference Manual - Manual (Page 379)

Troubleshooting MotionSuite™ MP940 Machine Controller Reference Manual
10-26
A.b2
A.b2 is the alarm display for the torque reference input read error alarm. 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 Part malfunctioned in reference
read-in unit (A/D converter, etc.). Reset alarm and restart operation.
B Part defective in reference read-in
unit (A/D converter, etc.). Replace servo amplifier.
C Circuit board (1PWB) defective. Replace servo amplifier.
Alarm occurs at power ON C
Alarm occurs during motor
operation
A,B