YASKAWA SGDA series

INSPECTION, MAINTENANCE AND TROUBLESHOOTING
6.2.1 Troubleshooting Problems with Alarm Displaycont.
356
Display and Outputs
Digital Operator
Di l
d
Alarm Output
g
p
Display and
Alarm
Name
Alarm Code Output
Alarm Output
Al
arm
N
ame
ALO1 ALO2 ALO3
p
A.82
Absolute encoder
sum-check error
(only if absolute
encoder is used)
OFF OFF OFF OFF
OFF: Output transistor is OFF
ON: Output transistor is ON
Status When Alarm Occurred
B
At power ON
Speed control
Cn-01 Bit 1 = 0
Speed control
Cn-01 Bit 1 = 1
When SEN signal turned
ON, Cn-01 Bit 1 = 0
A
,B
A
Position control
A
,B
During operation
(see note)
A
Cause Remedy
A Abnormality during absolute encoder
memory check
• Follow absolute encoder set-up proce-
dures.
• Replace servomotor if error occurs fre-
quently.
B Circuit board (1PWB) defective Replace Servopack.
Note An absolute encoder error (A.80) is given initially if a sum-check error (A.82) is generated
during operation.
The sum-check error (A.82) occurs after turning the SEN signal (or Servopack power supply)
OFF and back ON.
However, the sum-check error (
A.82
) does occur during operation if the host controller is re-
ceiving the S-phase signal (serial data).
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