YASKAWA E-V Series User Manual page 268

Alarm Number:
Alarm Name
(Alarm Description)
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
(Position error exceeded
reference is too high.
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).
MECHATROLINK transmission
A.E02:
cycle fluctuated.
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
WDT data of host controller was
not updated correctly.
A.E50:
MECHATROLINK
Synchronization Error
A SERVOPACK fault occurred.
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 MECHATROLINK
transmission cycle setting.
Check the WDT data updating for
the host controller.
−
8.1 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.
Restart the SERVOPACK. 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).
Remove the cause of transmission
cycle fluctuation at host controller.
Restart the SERVOPACK. If the
alarm still occurs, the SERVO-
PACK may be faulty. Replace the
SERVOPACK.
Set the transmission cycle to the
proper value.
Update the WDT data at the host
controller correctly.
Restart the SERVOPACK. If the
alarm still occurs, the SERVO-
PACK may be faulty. Replace the
SERVOPACK.
8
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