Troubleshooting Of Alarms - YASKAWA E-V Series User Manual

9 Troubleshooting

9.1.2 Troubleshooting of Alarms

9.1.2 Troubleshooting of Alarms

When an error occurs in SERVOPACKs, an alarm display such as A.
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:
Alarm Name
A.020:
Parameter Checksum
Error 1
(The parameter data in
the SERVOPACK is
incorrect.)
A.021:
Parameter Format
Error 1
(The parameter data in
the SERVOPACK is
incorrect.)
A.022:
System Checksum
Error 1
(The parameter data in
the SERVOPACK is
incorrect.)
A.023:
Parameter Password
Error 1
(The parameter data in
the SERVOPACK 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 SERVOPACK and
caused failure of the internal
components.
A SERVOPACK fault occurred.
The software version of SERVO-
PACK that caused the alarm is
older than that of the written
parameter.
A SERVOPACK fault occurred.
The power supply voltage sud-
denly dropped.
The power supply went OFF
while setting an utility function.
A SERVOPACK fault occurred.
A SERVOPACK fault occurred.
A SERVOPACK fault occurred.
Investigative Actions
Measure the power supply voltage.
Note the circumstances when the
power supply went OFF.
Were the parameters frequently
changed through the host control-
ler?
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 SERVOPACK is faulty.
Check Fn012 to see if the set soft-
ware version agrees with that of the
SERVOPACK. If not, an alarm may
occur.
−
Measure the power supply voltage.
Note the circumstances when the
power supply went OFF.
Turn the power supply ON and OFF
several times. If the alarm still
occurs, the SERVOPACK is faulty.
−
−
and CPF on the panel operator.
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 SERVOPACK may be faulty.
Repair or replace the SERVO-
PACK.
Reconsider the method of writing
parameters.
Take countermeasures against
noise.
The SERVOPACK may be faulty.
Repair or replace the SERVO-
PACK.
The SERVOPACK may be faulty.
Repair or replace the SERVO-
PACK.
Write the parameter of another
SERVOPACK of the same model
with the same software version.
Then turn the power OFF and then
ON again.
The SERVOPACK may be faulty.
Repair or replace the SERVO-
PACK.
The SERVOPACK may be faulty.
Repair or replace the SERVO-
PACK.
The SERVOPACK may be faulty.
Repair or replace the SERVO-
PACK.
The SERVOPACK may be faulty.
Repair or replace the SERVO-
PACK.
The SERVOPACK may be faulty.
Repair or replace the SERVO-
PACK.
The SERVOPACK may be faulty.
Repair or replace the SERVO-
PACK.