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Alarm Number:
Possible Cause
Alarm Name
Setting the origin of
the absolute linear
encoder failed
A.8A0:
because the motor
External Encoder
moved.
Error
A failure occurred in
the external encoder.
A failure occurred in
the external encoder.
A.8A1:
External Encoder
A failure occurred in
Module Error
the Serial Converter
Unit.
A.8A2:
External Incre-
A failure occurred in
mental Encoder
the external encoder.
Sensor Error
A.8A3:
A failure occurred in
External Abso-
the external absolute
lute Encoder
encoder.
Position Error
A.8A5:
An overspeed error
was detected in the
External Encoder
external encoder.
Overspeed
A.8A6:
An overheating error
was detected in the
External Encoder
external encoder.
Overheated
A malfunction
occurred in the speed
reference input sec-
tion.
A.b10:
Speed Reference
A/D Error
(Detected when
the servo is
A failure occurred in
turned ON.)
the SERVOPACK.
A malfunction
occurred in the speed
reference input sec-
tion.
A.b11:
Speed Reference
A/D Data Error
A failure occurred in
the SERVOPACK.
Confirmation
Before you set the ori-
gin, use the fully-closed
The motor must be
feedback pulse counter
stopped while setting the
to confirm that the
origin position.
motor is not moving.
Replace the external
–
encoder.
Replace the external
–
encoder.
Replace the Serial Con-
–
verter Unit.
Replace the external
–
encoder.
The external absolute
encoder may be faulty.
Refer to the encoder
–
manufacturer's instruc-
tion manual for correc-
tions.
Check the maximum
Keep the external
speed of the external
encoder below its maxi-
encoder.
mum speed.
Replace the external
–
encoder.
Reset the alarm and
–
restart operation.
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.
Reset the alarm and
–
restart operation.
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.
12.2 Alarm Displays
12.2.2 Troubleshooting Alarms
Continued from previous page.
Reference
Correction
for Correc-
tion
page 5-54
–
–
–
–
–
–
–
page 12-40
–
page 12-40
–
12
12-27
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Table of Contents
Troubleshooting
