Troubleshooting Alarms - YASKAWA SGD7S series Product Manual
Servopack with
ft/ex specification
for tracking application
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Also See for SGD7S series:
- Product manual (629 pages) ,
- Selection manual (337 pages) ,
- Product manual (549 pages)
Table of Contents
4.1.3
Troubleshooting Alarms
The causes of and corrections for the alarms are given in the following table. Contact your
Yaskawa representative if you cannot solve a problem with the correction given in the table.
Alarm Number:
Alarm Name
A.020:
Parameter
Checksum Error
(There is an error
in the parameter
data in the SER-
VOPACK.)
A.021:
Parameter For-
mat Error
(There is an error
in the parameter
data format in the
SERVOPACK.)
A.022:
System Check-
sum Error
(There is an error
in the parameter
data in the SER-
VOPACK.)
Possible Cause
The power supply
Measure the power
voltage suddenly
supply voltage.
dropped.
The power supply
Check the timing of
was shut OFF while
shutting OFF the power
writing parameter set-
supply.
tings.
The number of times
Check to see if the
that parameters were
parameters were fre-
written exceeded the
quently changed from
limit.
the host controller.
Turn the power supply
A malfunction was
to the SERVOPACK
caused by noise from
OFF and ON again. If
the AC power supply,
the alarm still occurs,
ground, static elec-
noise may be the
tricity, or other source.
cause.
Gas, water drops, or
cutting oil entered the
Check the installation
SERVOPACK and
conditions.
caused failure of the
internal components.
Turn the power supply
to the SERVOPACK
A failure occurred in
OFF and ON again. If
the SERVOPACK.
the alarm still occurs,
the SERVOPACK may
have failed.
The software version
Read the product infor-
of the SERVOPACK
mation to see if the soft-
that caused the alarm
ware versions are the
is older than the soft-
same. If they are differ-
ware version of the
ent, it could be the
parameters specified
cause of the alarm.
to write.
A failure occurred in
–
the SERVOPACK.
The power supply
Measure the power
voltage suddenly
supply voltage.
dropped.
The power supply
Check the timing of
was shut OFF while
shutting OFF the power
setting a utility func-
supply.
tion.
Turn the power supply
to the SERVOPACK
A failure occurred in
OFF and ON again. If
the SERVOPACK.
the alarm still occurs,
the SERVOPACK may
have failed.
4.1 SERVOPACKs with Analog Voltage/Pulse Train References
Confirmation
Set the power supply volt-
age within the specified
range, and initialize the
parameter settings.
Initialize the parameter
settings and then set the
parameters again.
The SERVOPACK may be
faulty. Replace the SER-
VOPACK.
Reconsider the method
for writing the parame-
ters.
Implement countermea-
sures against noise.
The SERVOPACK may be
faulty. Replace the SER-
VOPACK.
The SERVOPACK may be
faulty. Replace the SER-
VOPACK.
Write the parameters from
another SERVOPACK with
the same model and the
same software version,
and then turn the power
OFF and ON again.
The SERVOPACK may be
faulty. Replace the SER-
VOPACK.
The SERVOPACK may be
faulty. Replace the SER-
VOPACK.
The SERVOPACK may be
faulty. Replace the SER-
VOPACK.
The SERVOPACK may be
faulty. Replace the SER-
VOPACK.
4.1.3 Troubleshooting Alarms
Correction
Reference
*1
*1
–
*1
–
–
*1
–
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Continued on next page.
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