14.2 Alarm Displays
14.2.2 Troubleshooting Alarms
14-26
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.)
The surrounding air
temperature around
the Servomotor is too
high.
Measure the surround-
ing air temperature
around the Servomotor.
Reduce the surrounding
air temperature of the
Servomotor to 40°C or
less.
–
The Servomotor load
is greater than the
rated load.
Use the accumulated
load ratio to check the
load.
Operate the Servo Drive
so that the motor load
remains within the speci-
fied range.
page 9-3
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
absolute linear encoder
may be faulty. Replace the
Servomotor or absolute
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
SERVOPACK.
–
A.861:
Motor Over-
heated
The surrounding tem-
perature around the
Servomotor is too
high.
Measure the surround-
ing temperature around
the Servomotor.
Reduce the surrounding
air temperature of the
Servomotor to 40° or less.
–
The motor load is
greater than the rated
load.
Check the load with the
accumulated load ratio
on the Motion Monitor
Tab Page on the Sig-
maWin+.
Operate the Servo Drive
so that the motor load
remains within the speci-
fied range.
page 9-3
A failure occurred in
the Serial Converter
Unit.
–
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.
–
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
SERVOPACK.
–
Continued on next page.
Continued from previous page.
Alarm Number:
Alarm Name
Possible Cause Confirmation Correction Reference
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