Troubleshooting Alarms - YASKAWA SGD7S-***A20****F62 Series Product Manual

5.3 Troubleshooting Alarms

5.3

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.)
A.024:
System Alarm
(An internal pro-
gram error
occurred in the
SERVOPACK.)
5-8
Possible Cause
The power supply
Measure the power sup-
voltage suddenly
ply voltage.
dropped.
The power supply
Check the timing of shut-
was shut OFF while
ting OFF the power sup-
writing parameter set-
ply.
tings.
The number of times Check to see if the
that parameters were parameters were fre-
written exceeded the quently changed from the
limit. host controller.
A malfunction was Turn the power supply to
caused by noise from the SERVOPACK OFF and
the AC power supply, ON again. If the alarm still
ground, static elec- occurs, 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 OFF and
A failure occurred in
ON again. If the alarm still
the SERVOPACK.
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 different,
ware version of the
it could be the cause of
parameters specified
the alarm.
to write.
A failure occurred in
–
the SERVOPACK.
The power supply
Measure the power sup-
voltage suddenly
ply voltage.
dropped.
The power supply
Check the timing of shut-
was shut OFF while
ting OFF the power sup-
setting a utility func-
ply.
tion.
Turn the power supply to
the SERVOPACK OFF and
A failure occurred in
ON again. If the alarm still
the SERVOPACK.
occurs, the SERVOPACK
may have failed.
A failure occurred in
–
the SERVOPACK.
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.
The SERVOPACK may be
faulty. Replace the SER-
VOPACK.
Refer-
Correction
ence
*1
*1
–
*1
–
–
*1
–
–
–
–
–
Continued on next page.