YASKAWA E-7-Series SGD7S - Page 456

12.2 Alarm Displays
12.2.2 Troubleshooting Alarms
12-33
12
Maintenance
A.C92:
Encoder Commu-
nications Timer
Error
Noise entered on the
signal line from the
encoder.
–
Implement countermea-
sures against noise for the
encoder wiring.
page 4-5
Excessive vibration or
shock was applied to
the encoder.
Check the operating
conditions.
Reduce machine vibra-
tion. Correctly install the
Servomotor or linear
encoder.
–
A failure occurred in
the 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 Servomotor
or linear encoder.
–
A failure occurred in
the SERVOPACK.
–
Turn the power supply to
the SERVOPACK OFF and
ON again.
If an alarm still occurs, the
SERVOPACK may be
faulty.
Replace the SERVO-
PACK.
–
A.CA0:
Encoder Parame-
ter Error
A failure occurred in
the 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 Servomotor
or linear encoder.
–
A failure occurred in
the SERVOPACK.
–
Turn the power supply to
the SERVOPACK OFF and
ON again.
If an alarm still occurs, the
SERVOPACK may be
faulty.
Replace the SERVO-
PACK.
–
Continued from previous page.
Alarm Number:
Alarm Name
Possible Cause Confirmation Correction
Reference
for Correc-
tion