15.2 Alarm Displays
15.2.2 Troubleshooting Alarms
15-24
860 hex:
Encoder Over-
heated
(Detected at the
encoder, but only
when an abso-
lute encoder is
used.)
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.
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.
–
861 hex:
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.
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.
–
890 hex:
Encoder Scale
Error
A failure occurred in
the linear encoder.
–
The linear encoder may
be faulty. Replace the lin-
ear encoder.
–
891 hex:
Encoder Module
Error
A failure occurred in
the linear encoder.
–
Turn the power supply to
the SERVOPACK OFF and
ON again. If an alarm still
occurs, the linear encoder
may be faulty. Replace the
linear encoder.
–
8A0 hex:
External Encoder
Error
Setting the origin of
the absolute linear
encoder failed
because the motor
moved.
Before you set the ori-
gin, use the fully-closed
feedback pulse counter
to confirm that the
motor is not moving.
The motor must be
stopped while setting the
origin position.
A failure occurred in
the external encoder.
–
Replace the external
encoder.
–
Continued on next page.
Continued from previous page.
Alarm Code:
Alarm Name
Possible Cause
Confirmation
Correction
Reference