Troubleshooting Alarms - YASKAWA SGM7D-30F Product Manual

3.5 FT83 SERVOPACKs with Analog Voltage/Pulse Train References

3.5.3 Troubleshooting Alarms

Note: The A.Eb0, A.Eb2 to A.Eb9, and A.EC0 to A.EC2 alarms can occur when a Safety Module is connected.
Refer to the following manual for details.
3.5.3 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.)
3-210
AC Servo Drive Σ-V-Series/Σ-V-Series for Large-Capacity Models/Σ-7-Series User's Manual Safety Module
(Manual No.: SIEP C720829 06)
Possible Cause
The power supply
voltage suddenly
dropped.
The power supply
was shut OFF while
writing parameter set-
tings.
The number of times
that parameters were
written exceeded the
limit.
A malfunction was
caused by noise from
the AC power supply,
ground, static elec-
tricity, or other source.
Gas, water drops, or
cutting oil entered the
SERVOPACK and
caused failure of the
internal components.
A failure occurred 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.
A failure occurred in
the SERVOPACK.
Confirmation
Set the power supply volt-
Measure the power age within the specified
supply voltage. range, and initialize the
parameter settings.
Check the timing of Initialize the parameter
shutting OFF the power settings and then set the
supply. parameters again.
The SERVOPACK may be
Check to see if the faulty. Replace the SER-
parameters were fre- VOPACK.
quently changed from Reconsider the method
the host controller. for writing the parame-
ters.
Turn the power supply
to the SERVOPACK
OFF and ON again. If Implement countermea-
the alarm still occurs, sures against noise.
noise may be the
cause.
The SERVOPACK may be
Check the installation
faulty. Replace the SER-
conditions.
VOPACK.
Turn the power supply
to the SERVOPACK
The SERVOPACK may be
OFF and ON again. If
faulty. Replace the SER-
the alarm still occurs,
VOPACK.
the SERVOPACK may
have failed.
Read the product infor- Write the parameters from
mation to see if the soft- another SERVOPACK with
ware versions are the the same model and the
same. If they are differ- same software version,
ent, it could be the and then turn the power
cause of the alarm. OFF and ON again.
The SERVOPACK may be
– faulty. Replace the SER-
VOPACK.
Correction Reference
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