YASKAWA E-S Series User Manual

10.1 Alarm and Warning Displays
10.1.3 Troubleshooting Alarms
10-5
10
Maintenance
10.1.3 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
Possible Cause Confirmation Correction
Reference
for
Correction
A.020:
Parameter
Checksum Error
(There is an
error in the
parameter data
in the
SERVOPACK.)
The power supply volt-
age suddenly dropped.
Measure the power sup-
ply voltage.
Set the power supply
voltage within the speci-
fied range, and initialize
the parameter settings.
page 5-6
The power supply was
shut OFF while writing
parameter settings.
Check the timing of shut-
ting OFF the power sup-
ply.
Initialize the parameter
settings and then set
the parameters again.
The number of times
that parameters were
written exceeded the
limit.
Check to see if the
parameters were fre-
quently changed from the
host controller.
The SERVOPACK may
be faulty. Replace the
SERVOPACK. Recon-
sider the method for
writing the parameters.
−
A malfunction was
caused by noise from
the power supply,
ground, static electric-
ity, or other source
Turn the power supply to
the SERVOPACK OFF and
ON again. If the alarm still
occurs, noise may be the
cause.
Implement countermea-
sures against noise.
page 4-4
Gas, water drops, or
cutting oil entered the
SERVOPACK and
caused failure of SER-
VOPACK components.
Confirm the installation
conditions.
The SERVOPACK may
be faulty. Replace the
SERVOPACK.
−
A failure occurred in
the SERVOPACK.
Turn the power supply to
the SERVOPACK OFF and
ON again. If the alarm still
occurs, the SERVOPACK
may have failed.
The SERVOPACK may
be faulty. Replace the
SERVOPACK.
−
A.021:
Parameter
Format Error
(There is an
error in the
parameter data
format in the
SERVOPACK.)
The software version of
the SERVOPACK that
caused the alarm is
older than the soft-
ware version of the
parameters specified
to write.
−
Write the parameters
from another SERVO-
PACK with the same
model and the same
software version, and
then turn the power
OFF and ON again.
page 9-2
A failure occurred in
the SERVOPACK.
−
The SERVOPACK may
be faulty. Replace the
SERVOPACK.
−
A.022:
System
Checksum Error
1
(There is an
error in the
parameter data
in the
SERVOPACK.)
The power supply volt-
age suddenly dropped.
Measure the power sup-
ply voltage.
The SERVOPACK may
be faulty. Replace the
SERVOPACK.
−
The power supply was
shut OFF during a Sig-
maWin+ operation.
Check the timing of shut-
ting OFF the power sup-
ply.
The SERVOPACK may
be faulty. Replace the
SERVOPACK.
−
A failure occurred in
the SERVOPACK.
Turn the power supply to
the SERVOPACK OFF and
ON again. If the alarm still
occurs, the SERVOPACK
may have failed.
The SERVOPACK may
be faulty. Replace the
SERVOPACK.
−
Continued on next page.

YASKAWA E-S Series Specifications

General

Brand	YASKAWA
Model	E-S Series
Category	Servo Drives
Language	English