Yaskawa MP940 - Manual (Page 382)

10.2 Troubleshooting
10-15
10
„ A.81
A.81: Absolute Encoder Backup Error
Display and Outputs
Note: OFF: Output transistor is OFF (alarm state).
Status and Remedy for Alarm
„ A.82
A.82: Encoder Checksum Error
Display and Outputs
Note: OFF: Output transistor is OFF (alarm state).
Alarm Outputs
Alarm Code Outputs
ALM Output
ALO1 ALO2 ALO3
OFF OFF OFF OFF
Cause Remedy
A The following power supplies to the abso-
lute encoder all failed:
• +5 V supply
• Battery power
Follow absolute encoder set-up
procedure.
B Absolute encoder malfunctioned. Replace servomotor.
C Circuit board (1PWB) defective. Replace SERVOPACK.
Alarm Outputs
Alarm Code Outputs
ALM Output
ALO1 ALO2 ALO3
OFF OFF OFF OFF
Pn002.2 = 1
A,B,C
C
At power ON
Pn002.2 = 0 or 2