Yaskawa DR2 Sigma Servo - Manual (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
Alarm Name
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).
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