Yaskawa SGDB - Manual (Page 525)

INSPECTION, MAINTENANCE, AND TROUBLESHOOTING
6.2.1 Troubleshooting Problems with Alarm Display cont.
516
J A.84
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
when 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
Cn-01 Bit 1 = 0
Cn-01 Bit 1 = 1
When SEN signal turned
ON, Cn-01 Bit 1 = 0
A
B
During operation
(see note)
B
Cause Remedy
A Absolute encoder malfunctioned • At Cn-01 Bit 1 = 0, turn SEN signal OFF
then back ON.
• At Cn-01 Bit 1 = 1, turn SERVOPACK pow-
er OFF then 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