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12.2 Alarm Displays
12.2.2 Troubleshooting Alarms
Alarm Number:
Alarm Name
A.860:
Encoder Over-
heated (Detected
at the encoder,
but only when an
absolute encoder
is used.)
A.861:
Motor Over-
heated
A.890:
Encoder Scale
Error
A.891:
Encoder Module
Error
12-26
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.
A failure occurred in
–
the linear encoder.
A failure occurred in
–
the linear encoder.
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 SERVO-
PACK.
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 Converter 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 SERVO-
PACK.
The linear encoder may
be faulty.
Replace 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.
Continued from previous page.
Reference
Correction
for Correc-
tion
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Table of Contents
Troubleshooting
