Yaskawa Σ-V Series AC Servo Drives Rotational Motor MECHATROLINK-III - Manual (Page 268)

8.1 Alarm Displays
8-13
8
Trou
blesh
ooting
A.d00:
Position Error
Overflow
(Position error exceeded
the value set in the
excessive position error
alarm level (Pn520).)
The servomotor U, V, and W wir-
ings is faulty.
Check the servomotor main circuit
cable connection.
Confirm that there is no contact
fault in the motor wiring or encoder
wiring.
The position reference speed is
too high.
Reduce the reference speed, and
operate the SERVOPACK.
Reduce the position reference speed
or acceleration of position refer-
ence. Or, reconsider the electronic
gear ratio.
The acceleration of the position
reference is too high.
Reduce the reference acceleration,
and operate the SERVOPACK.
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.
Setting of the excessive position
error alarm level (Pn520) is low
against the operating condition.
Check the alarm level (Pn520) to
see if it is set to an appropriate
value.
Set the Pn520 to proper value.
A SERVOPACK fault occurred. −
Restart the SERVOPACK. If the
alarm still occurs, the SERVO-
PACK may be faulty. Replace the
SERVOPACK.
A.d01:
Position Error
Overflow Alarm at
Servo ON
This alarm occurs if the servomo-
tor power is turned ON when the
position error is greater than the
set value of Pn526 while the ser-
vomotor power is OFF.
Check the position error amount
(Un008) while the servomotor
power is OFF.
Correct the excessive position error
alarm level at servo ON (Pn526).
A.d02:
Position Error
Overflow Alarm by
Speed Limit at Servo
ON
When the position errors remain
in the error counter, Pn529 limits
the speed if the servomotor power
is ON. If Pn529 limits the speed
in such a state, this alarm occurs
when position references are
input and the number of position
errors exceeds the value set for
the excessive position error alarm
level (Pn520).
−
Correct the excessive position error
alarm level (Pn520).
Or, adjust the speed limit level at
servo ON (Pn529).
A.E02:
MECHATROLINK
Internal
Synchronization
Error 1
MECHATROLINK transmission
cycle fluctuated.
−
Remove the cause of transmission
cycle fluctuation at host controller.
A SERVOPACK fault occurred. −
Restart the SERVOPACK. If the
alarm still occurs, the SERVO-
PACK may be faulty. Replace the
SERVOPACK.
A.E40:
MECHATROLINK
Transmission Cycle
Setting Error
Setting of MECHATROLINK
transmission cycle is out of speci-
fications range.
Check the MECHATROLINK
transmission cycle setting. Set the transmission cycle to the
proper value.
A.E41:
MECHATROLINK
Communications Data
Size Setting Error
The number of transmission bytes
set by the DIP switch S2 is incor-
rect.
Check the MECHATROLINK com-
munications data size of the host
controller.
Reset the setting of the DIP switch
S2 to change the number of trans-
mission bytes to the proper value.
(cont’d)
Alarm Number:
Alarm Name
(Alarm Description)
Cause Investigative Actions Corrective Actions