YASKAWA SGM-A3 - Page 412

INSPECTION, MAINTENANCE, AND TROUBLESHOOTING
6.2.1 Troubleshooting Problems with Alarm Display cont.
400
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).
D 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.83
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
C
At control power ON
Cn-01 Bit 1 = 0
Cn-01 Bit 1 = 1
When SEN signal turned
ON, Cn-01 Bit 1 = 0
A
,
B
A
,
B
During operation
(see note)
A,
B
Cause Remedy
A
• Battery not connected
• Battery connection defective
Check and correct battery connection.
B Battery voltage below specified value.
Specified value: 2.8 V.
Install new battery and turn SEN signal (or
Servopack control power) ON.
C Circuit board (1PWB) defective Replace Servopack.
Note
No alarm occurs at the Servopack when a battery error (
A.83
) is generated. The battery error
(A.83) occurs the next time the SEN signal (or Servopack) turns ON.
However, the battery error (
A.83
) can be read during operation if the host controller is receiv-
ing the S-phase signal (serial data).
6