YASKAWA SGM series User Manual page 365

Display and Outputs
Digital Operator g p
Di Display and l d
Alarm Name Alarm Name
ALO1
A.81
OFF
Absolute encoder
back-up error
(only if absolute
encoder is used)
Status When Alarm Occurred
At power ON
Speed control
Cn-01 Bit 1 = 0
Speed control
Cn-01 Bit 1 = 1
Position control
Cause
A The following power supplied to the
absolute encoder all failed:
• +5 V supply
• Battery (ER6V C3)
• Internal capacitor
B Circuit board (1PWB) defective
C Absolute encoder malfunctioned
Alarm Output
Alarm Code Output
ALO2
OFF OFF
When SEN signal turned
ON Cn-01 Bit 1 = 0
B
A
, C
A
, C
Follow absolute encoder set-up
procedures.
Replace Servopack.
Replace servomotor.
6.2 Troubleshooting
Alarm Output p
ALO3
OFF
OFF: Output transistor is OFF
ON: Output transistor is ON
A
, C
Remedy
355
6