YASKAWA SGD7S Product Manual page 457

Alarm Number:
Possible Cause
Alarm Name
The servo was turned
ON under the follow-
ing circumstances.
A.C52:
• When an absolute
Polarity Detec-
linear encoder was
tion Not Com-
being used
pleted
• When polarity
detection was not
completed
The travel distance
A.C53:
exceeded the setting
Out of Range of of Pn48E (Polarity
Motion for Polar- Detection Range) in
the middle of detec-
ity Detection
tion.
A.C54:
An external force was
applied to the Servo-
Polarity Detec-
motor.
tion Failure 2
A failure occurred in
the encoder.
A.C80:
Encoder Clear
Error or Multiturn
Limit Setting Error
A failure occurred in
the SERVOPACK.
Confirmation
Perform polarity detec-
–
tion.
Increase the setting of
Pn48E (Polarity Detection
Range). Or, increase the
–
setting of Pn481 (Polarity
Detection Speed Loop
Gain).
Increase the setting of
Pn495 (Polarity Detection
Confirmation Force Refer-
ence). Increase the setting
of Pn498 (Polarity Detec-
–
tion Allowable Error
Range). Increasing the
allowable error will also
increase the motor tem-
perature.
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.
14.2 Alarm Displays
14.2.2 Troubleshooting Alarms
Continued from previous page.
Correction Reference
page 5-26
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–
–
–
Continued on next page.
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