9 Troubleshooting
9-12
A.C7
A.C7: Fully Closed Encoder Phase-C Disconnection Alarm
Display and Outputs
Note: OFF: Output transistor is OFF (alarm state). ON: Output transistor is
ON.
Status and Remedy for Alarm
Alarm Outputs
Alarm Code Outputs ALM Output
ALO1 ALO2 ALO3
ON OFF ON OFF
Cause Remedy
A Circuit board (1PWB) is defective. Replace the SERVOPACK.
B Encoder wiring error or faulty contact. Check the wiring and check that the con-
nector is fully inserted on the encoder
side.
C There is noise in the encoder wiring. Separate the encoder wiring from the
main circuit.
D Encoder is defective. Replace the servomotor.
At power ON
A
1 to 3 seconds after power
ON
A, B,
C, D
During servomotor
operation
A, B,
C, D
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