Troubleshooting Of Alarms - YASKAWA JUSP-MD D01A Series User Manual

9 Troubleshooting

9.1.2 Troubleshooting of Alarms

9.1.2

Troubleshooting of Alarms

If an error occurs in servo drives, an alarm display such as A.
play.
Refer to the following table to identify the cause of an alarm and the action to be taken.
Contact your Yaskawa representative if the problem cannot be solved by the described corrective action.
Alarm Number:
Alarm Name
(Alarm Description)
A.020:
Parameter Checksum
Error 1
(The data of the internal
parameter is incorrect.)
A.021:
Parameter Format
Error 1
(The data type of the
internal parameter is
incorrect.)
A.022:
System Checksum
Error 1
(The data of the internal
parameter is incorrect.)
A.030:
Main Circuit Detector
Error
9-6
Cause
The power supply voltage sud-
denly dropped.
The power supply went OFF
while changing a parameter set-
ting.
The number of times that parame-
ters were written exceeded the
limit.
Malfunction caused by noise
from the AC power supply or
grounding line, static electricity
noise, etc.
Gas, water drops, or cutting oil
entered the multi-winding drive
unit and caused internal compo-
nents to fail.
A fault occurred in the multi-
winding drive unit.
The software version of the
multi-winding drive unit that
caused the alarm is older than that
of the written parameters.
A fault occurred in the multi-
winding drive unit.
The power supply voltage sud-
denly dropped.
The power supply went OFF
while setting an utility function.
A fault occurred in the multi-
winding drive unit.
A fault occurred in the SERVO-
PACK or converter.
and CPF

Investigative Actions
Measure the power supply voltage.
Check the circumstances when the
power supply went OFF.
Check to see if the parameters were
frequently changed through the host
controller.
Turn the power supply ON and OFF
several times. If the alarm still
occurs, there may be noise interfer-
ence.
Check the installation conditions.
Turn the power supply ON and OFF
several times. If the alarm still
occurs, the multi-winding drive unit
may be faulty.
Check Fn012 to see if the set soft-
ware version agrees with that of the
multi-winding drive unit. If not, an
alarm may occur.
−
Measure the power supply voltage.
Check the circumstances when the
power supply went OFF.
Turn the power supply ON and OFF
again. If the alarm still occurs, the
multi-winding drive unit may be
faulty.
−
will appear on the panel dis-

Corrective Actions
Set the power supply voltage within
the specified range, and set Fn005
to initialize the parameter.
Set Fn005 to initialize the parameter
and then set the parameter again.
The multi-winding drive unit may
be faulty. Replace the multi-wind-
ing drive unit. Correct the proce-
dure for writing parameters.
Take countermeasures against
noise.
The multi-winding drive unit may
be faulty. Replace the multi-wind-
ing drive unit.
The multi-winding drive unit may
be faulty. Replace the multi-wind-
ing drive unit.
Write the parameters of another
multi-winding drive unit of the
same model with the same software
version. Then turn the control
power OFF and ON again.
The multi-winding drive unit may
be faulty. Replace the multi-wind-
ing drive unit.
The multi-winding drive unit may
be faulty. Replace the multi-wind-
ing drive unit.
The multi-winding drive unit may
be faulty. Replace the multi-wind-
ing drive unit.
The multi-winding drive unit may
be faulty. Replace the multi-wind-
ing drive unit.
The SERVOPACK or converter
may be faulty. Replace the SERVO-
PACK or converter.