YASKAWA SGD7S Product Manual page 467

14.2 Alarm Displays
14.2.2 Troubleshooting Alarms
Alarm Number:
Alarm Name
A.860:
Encoder Over-
heated
(Detected when a
Rotary Servomo-
tor, Absolute Lin-
ear Encoder, or
Direct Drive Ser-
vomotor is con-
nected. However
this alarm is not
detected for
SGMCS
Servomotors with
Incremental
Encoders.)
(Detected at the
encoder.)
A.861:
Motor Over-
heated
14-26
Possible Cause
The surrounding air
Measure the surround-
temperature around
ing air temperature
the Servomotor is too
around the Servomotor.
high.
The Servomotor load Use the accumulated
is greater than the load ratio to check the
rated load. load.
A failure occurred in
–
the encoder.
A failure occurred in
–
the SERVOPACK.
The surrounding tem-
Measure the surround-
perature around the
ing temperature around
Servomotor is too
the Servomotor.
high.
Check the load with the
The motor load is accumulated load ratio
greater than the rated on the Motion Monitor
load. Tab Page on the Sig-
maWin+.
A failure occurred in
the Serial Converter
–
Unit.
A failure occurred in
–
the SERVOPACK.
Confirmation
Reduce the surrounding
air temperature of the
Servomotor to 40°C or
less.
Operate the Servo Drive
so that the motor load
remains within the speci-
fied range.
Turn the power supply to
the SERVOPACK OFF and
ON again. If an alarm still
occurs, the Servomotor or
absolute linear encoder
may be faulty. Replace the
Servomotor or absolute
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.
Reduce the surrounding
air temperature of the
Servomotor to 40° or less.
Operate the Servo Drive
so that the motor load
remains within the speci-
fied range.
Turn the power supply to
the SERVOPACK OFF and
ON again. If an alarm still
occurs, the Serial Con-
verter Unit may be faulty.
Replace the Serial Con-
verter Unit.
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 9-3
–
–
–
page 9-3
–
–
Continued on next page.