YASKAWA SGD7S Product Manual page 475

14.2 Alarm Displays
14.2.2 Troubleshooting Alarms
Alarm Number:
Alarm Name
A.C92:
Encoder Commu-
nications Timer
Error
A.CA0:
Encoder Parame-
ter Error
14-34
Possible Cause
Noise entered on the
signal line from the –
encoder.
Excessive vibration or
Check the operating
shock was applied to
conditions.
the encoder.
A failure occurred in
–
the encoder.
A failure occurred in
–
the SERVOPACK.
A failure occurred in
–
the encoder.
A failure occurred in
–
the SERVOPACK.
Confirmation
Implement countermea-
sures against noise for the
encoder wiring.
Reduce machine vibra-
tion.
Correctly install the Ser-
vomotor or linear encoder.
Turn the power supply to
the SERVOPACK OFF and
ON again. If an alarm still
occurs, the Servomotor or
linear encoder may be
faulty. Replace the Servo-
motor or linear encoder.
Turn the power supply to
the SERVOPACK OFF and
ON again. If an alarm still
occurs, the SERVOPACK
may be faulty. Replace the
SERVOPACK.
Turn the power supply to
the SERVOPACK OFF and
ON again. If an alarm still
occurs, the Servomotor or
linear encoder may be
faulty. Replace the Servo-
motor or linear encoder.
Turn the power supply to
the SERVOPACK OFF and
ON again. If an alarm still
occurs, the SERVOPACK
may be faulty. Replace the
SERVOPACK.
Continued from previous page.
Correction Reference
page 4-6
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Continued on next page.