Troubleshooting Of Alarms - YASKAWA E-V-MD Series User Manual

10 Maintenance, Inspections, and Troubleshooting

10.2.2 Troubleshooting of Alarms

10.2.2 Troubleshooting of Alarms

When a problem occurs in the servo drive, you can detect it by reading the alarm with the MECHATROLINK
ALM_RD command. You can check the alarm that occurs in the Alarm Display dialog box of the Sig-
maWin+.
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 error 1
A.021:
Parameter error 2
A.022:
Parameter error 3
A.023:
Parameter error 4
A.030:
Main Circuit Detector
Error
A.040:
Parameter Setting
Error 1
(The parameter setting
was out of the setting
range.)
10-6
Cause
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 went OFF
while setting a utility function.
A SERVOPACK fault occurred.
The power board is not con-
nected.
A SERVOPACK fault occurred.
A SERVOPACK fault occurred.
The SERVOPACK and servomo-
tor capacities do not match each
other.
A SERVOPACK fault occurred.
The parameter setting is out of
the setting range.
The electronic gear ratio is out of
the setting range.
Investigative Actions
Check the circumstances when the
power supply went OFF.
Check to see if the parameters were
frequently changed through the host
controller.
Restart the SERVOPACK several
times. If the alarm still occurs, there
may be noise interference.
Check the installation conditions.
Restart the SERVOPACK several
times. If the alarm still occurs, the
SERVOPACK may be faulty.
Check if the set software version
agrees with that of the SERVO-
PACK. If not, an alarm may occur.
−
Check the circumstances when the
power supply went OFF.
Restart the SERVOPACK several
times. If the alarm still occurs, the
SERVOPACK may be faulty.
−
−
−
Check the combination of SERVO-
PACK and servomotor capacities.
−
Check the setting ranges of the
parameters that have been changed.
Make sure the gear ratio satisfies
the following conditions: 0.001 <
(PnA42/PnA44) < 4,000.
Corrective Actions
Set Fn005 to initialize the parameter
and then set the parameter again.
The SERVOPACK may be faulty.
Replace the SERVOPACK.
Reconsider the method of writing
parameters.
Take countermeasures against
noise.
The SERVOPACK may be faulty.
Replace the SERVOPACK.
The SERVOPACK may be faulty.
Replace the SERVOPACK.
Write the parameter of another
SERVOPACK of the same model
with the same software version.
Restart the SERVOPACK.
The SERVOPACK may be faulty.
Replace the SERVOPACK.
The SERVOPACK may be faulty.
Replace the SERVOPACK.
The SERVOPACK may be faulty.
Replace the SERVOPACK.
Make sure the control board and
power board are mounted properly.
Replace the SERVOPACK.
The SERVOPACK may be faulty.
Replace the SERVOPACK.
Select the proper combination of
SERVOPACK and servomotor
capacities.
The SERVOPACK may be faulty.
Replace the SERVOPACK.
Set the parameter to a value within
the setting range.
Set the gear ratio so that it satisfies
the following conditions: 0.001 <
(PnA42/PnA44) < 4,000.