YASKAWA SGMJV User Manual page 318

Alarm Number:
Alarm Name
The servomotor U, V, and W wir-
ings is faulty.
The position reference speed is
too high.
A.d00:
Position Error
Overflow The acceleration of the position
reference is too high.
(Position error exceeded
the value set in the
excessive position error
alarm level (Pn520).)
Setting of the excessive position
error alarm level (Pn520) is low
against the operating condition.
A SERVOPACK fault occurred.
This alarm occurs if the servomo-
A.d01:
tor power is turned ON when the
Position Error
position error is greater than the
Overflow Alarm at
set value of Pn526 while the ser-
Servo ON
vomotor power is OFF.
When the position errors remain
in the error counter, Pn529 limits
the speed if the servomotor power
A.d02:
is ON. If Pn529 limits the speed
Position Error
in such a state, this alarm occurs
Overflow Alarm by
when position references are
Speed Limit at Servo
input and the number of position
ON
errors exceeds the value set for
the excessive position error alarm
level (Pn520).
Motor rotation direction and
external encoder installation
A.d10:
direction are opposite.
Motor-load Position
Error Overflow
Mounting of the load (e.g., stage)
and external encoder joint instal-
lation are incorrect.
MECHATROLINK transmission
cycle fluctuated.
A.E02:
MECHATROLINK
Internal
Synchronization
A SERVOPACK fault occurred.
Error 1
A.E40:
Setting of MECHATROLINK
MECHATROLINK
transmission cycle is out of speci-
Transmission Cycle
fications range.
Setting Error
Cause Investigative Actions
Check the servomotor main circuit
cable connection.
Reduce the reference speed, and
operate the SERVOPACK.
Reduce the reference acceleration,
and operate the SERVOPACK.
Check the alarm level (Pn520) to
see if it is set to an appropriate
value.
−
Check the position error amount
(Un008) while the servomotor
power is OFF.
−
Check the servomotor rotation
direction and the external encoder
installation direction.
Check the external encoder
mechanical connection.
−
−
Check the MECHATROLINK
transmission cycle setting.
9.1 Alarm Displays
(cont'd)
Corrective Actions
Confirm that there is no contact
fault in the motor wiring or encoder
wiring.
Reduce the position reference speed
or acceleration of position refer-
ence. Or, reconsider the electronic
gear ratio.
Reduce the reference acceleration
of the position reference using a
MECHATROLINK command, or
smooth the acceleration of the posi-
tion reference by selecting the posi-
tion reference filter (ACCFIL)
using a MECHATROLINK com-
mand.
Set the Pn520 to proper value.
Turn the power supply to the SER-
VOPACK OFF and ON again. If the
alarm still occurs, the SERVO-
PACK may be faulty. Replace the
SERVOPACK.
Correct the excessive position error
alarm level at servo ON (Pn526).
Correct the excessive position error
alarm level (Pn520).
Or, adjust the speed limit level at
servo ON (Pn529).
Install the external encoder in the
opposite direction, or change the
setting of the external encoder
usage method (Pn002.3) to reverse
the direction.
Check the mechanical joints.
Remove the cause of transmission
cycle fluctuation at host controller.
Turn the power supply to the SER-
VOPACK OFF and ON again. If the
alarm still occurs, the SERVO-
PACK may be faulty. Replace the
SERVOPACK.
Set the transmission cycle to the
proper value.
9
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