YASKAWA SGM-A3 - Page 413

6.2 Troubleshooting
401
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.84
Absolute encoder
data 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 control power ON
Cn-01 Bit 1 = 0
Cn-01 Bit 1 = 1
When SEN signal turned
ON, Cn-01 Bit 1 = 0
A
A
During operation
(see note)
A
Cause Remedy
A Absolute encoder malfunctioned
• When Cn-01 Bit 1 = 0, turn SEN signal OFF
and back ON.
• When Cn-01 Bit 1 = 1, turn Servopack con-
trol power OFF and back ON.
• Replace servomotor if error occurs fre-
quently.
B Circuit board (1PWB) defective Replace Servopack.
Note No alarm occurs at the Servopack when a data error (A.84) is generated. The data error
(A.84) occurs the next time the SEN signal (or Servopack) turns ON.
However, the data error (
A.84
) can be read during operation if the host controller is receiving
the S-phase signal (serial data).
6