YASKAWA UAK series User Manual page 266

11 Inspection, Maintenance, and Troubleshooting
11.2.3 Troubleshooting of the Servo Drive Alarms
Alarm:
Alarm Name
A.029:
Motor Parameter
Checksum Error
(The motor parameter
data in the SERVO-
PACK is corrupted.)
A.02C:
Converter Parameter
Checksum Error
(The parameter data in
the power regeneration
converter is incorrect.)
A.02D:
Converter Parameter
Format Error
(The parameter format in
the power regeneration
converter is incorrect.)
A.02E:
Converter System
Checksum Error
(The parameter data in
the power regeneration
converter is incorrect.)
A.030:
Main Circuit Detector
Error
A.040:
Parameter Setting
Error
(The parameter setting
was out of the allowable
setting range.)
A.042:
Parameter
Combination Error
11-12
Cause
Writing the motor parameters
failed.
Motor Parameter Error
The power supply voltage sud-
denly dropped.
The power supply went OFF
while changing a motor parame-
ter setting.
The number of times that motor
parameters 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.
SERVOPACK failure
Power regeneration converter
failure
Power regeneration converter
failure
Power regeneration converter
failure
SERVOPACK failure
The SERVOPACK and servomo-
tor capacities do not match each
other.
SERVOPACK failure
The parameter setting is out of
the specified range.
The speed of program JOG oper-
ation is lower than the setting
range after having changed the
setting of Pn533 "Program JOG
Movement Speed."
Investigative Actions
Check to see if write processing
ended before the write was com-
pleted.
Check to see if suitable motor
parameters were written.
Measure the power supply voltage.
Note the circumstances when the
power supply went OFF.
Check to see if the parameters were
frequently changed.
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 the combination of SERVO-
PACK and servomotor capacities.
−
Check the setting ranges of the
parameters that have been changed.
Check that the detection conditions
is satisfied.
Corrective Actions
Write the motor parameters again.
Write suitable motor parameters.
Set the power supply voltage within
the specified range.
Write the motor parameters again.
The SERVOPACK may be faulty.
Repair or replace the SERVO-
PACK.
Take countermeasures against
noise.
The SERVOPACK may be faulty.
Replace the SERVOPACK.
The SERVOPACK may be faulty.
Replace the SERVOPACK.
The power regeneration converter
may be faulty. Replace the power
regeneration converter.
The power regeneration converter
may be faulty. Replace the power
regeneration converter.
The power regeneration converter
may be faulty. Replace the power
regeneration converter.
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 specified range.
*
Increase the setting for Pn533 "Pro-
gram JOG Movement Speed."
(cont'd)