YASKAWA SGM series User Manual page 368

INSPECTION, MAINTENANCE AND TROUBLESHOOTING
6.2.1 Troubleshooting Problems with Alarm Display cont.
6
Note
358
Display and Outputs
Digital Operator g p
Di Display and l d
Alarm Name Alarm Name
ALO1
A.84
OFF
Absolute encoder
data error (only if
absolute encoder
is used)
Status When Alarm Occurred
At power ON
Speed control
Cn-01 Bit 1 = 0
Speed control
Cn-01 Bit 1 = 1
Position control
A Absolute encoder malfunctioned
B Circuit board (1PWB) defective
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).
Alarm Output
Alarm Code Output
ALO2
OFF
When SEN signal turned
ON, Cn-01 Bit 1 = 0
During operation
B
(see note)
A
A
Cause
• For speed control (Cn-01 Bit 1 = 0), turn
• For speed control (Cn-01 Bit 1 = 1) or posi-
• Replace servomotor if error occurs fre-
Replace Servopack.
Alarm Output
ALO3
OFF OFF
OFF: Output transistor is OFF
ON: Output transistor is ON
A
A
Remedy
SEN signal OFF and back ON.
tion control, turn Servopack power OFF
and back ON.
quently.
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