YASKAWA SGM7D-30F Product Manual page 233

3.4 Command Option Attachable-type FT82 SERVOPACKs with INDEXER Modules
3.4.3 Troubleshooting Alarms
Alarm Number:
Alarm Name
A.861:
Motor Over-
heated
A.862:
Overheat Alarm
A.8A0:
External Encoder
Error
A.8A1:
External Encoder
Module Error
3-164
Possible Cause
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.
Check the surrounding
The surrounding tem-
temperature using a
perature is too high.
thermostat.
Check the input voltage
The overheat protec- with the overheat pro-
tion input signal line is tection input information
disconnected or on the Motion Monitor
short-circuited. Tab Page on the Sig-
maWin+.
An overload alarm
Check the alarm display
was reset by turning
to see if there is an
OFF the power sup-
overload alarm.
ply too many times.
Operation was per- Use the accumulated
formed under an load ratio to check the
excessive load. load during operation.
A failure occurred in
–
the SERVOPACK.
The sensor attached
to the machine is –
faulty.
Setting the origin of Before you set the ori-
the absolute linear gin, use the fully-closed
encoder failed feedback pulse counter
because the motor to confirm that the
moved. motor is not moving.
A failure occurred in
–
the external encoder.
A failure occurred in
–
the external encoder.
A failure occurred in
the Serial Converter –
Unit.
Confirmation
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.
Lower the surrounding
temperature by improving
the installation conditions
of the machine.
Repair the line for the
overheat protection input
signal.
Change the method for
resetting the alarm.
Reconsider the load and
operating conditions.
The SERVOPACK may be
faulty. Replace the
SERVOPACK.
The sensor attached to
the machine may be
faulty. Repair the sensor
attached to the machine.
The motor must be
stopped while setting the
origin position.
Replace the external
encoder.
Replace the external
encoder.
Replace the Serial Con-
verter Unit.
Continued from previous page.
Correction Reference
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*1
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*1
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Continued on next page.