YASKAWA SGD7S-R70A20A023F40B Product Manual page 121

Alarm Number:
Possible Cause
Alarm Name
The servo was turned
ON after the position
A.d01:
deviation exceeded
Position Devia-
the setting of Pn526
tion Overflow
(Position Deviation
Alarm at Servo
Overflow Alarm Level
ON
at Servo ON) while the
servo was OFF.
If position deviation
remains in the devia-
tion counter, the set-
ting of Pn529 or
Pn584 (Speed Limit
A.d02: Level at Servo ON)
limits the speed when
Position Devia-
the servo is turned
tion Overflow
ON. This alarm occurs
Alarm for Speed
if a position reference
Limit at Servo ON
is input and the set-
ting of Pn520 (Posi-
tion Deviation
Overflow Alarm Level)
is exceeded.
The difference
between the pressure
feedback reference
A.d0A:
and the pressure
Pressure
feedback detection
Feedback Loop
value exceeded the
Deviation
level set in Pn447
Overflow
(Pressure Feedback
Loop Deviation Over-
flow Level).
The motor direction
and external encoder
installation orientation
A.d10:
are backward.
Motor-Load Posi-
tion Deviation
Overflow
There is an error in the
connection between
the load (e.g., stage)
and external encoder
coupling.
A.d30:
The position data
Position Data exceeded
±1,879,048,192.
Overflow
The MECHATROLINK
transmission cycle
fluctuated.
A.E02:
MECHATROLINK
Internal Synchro-
nization Error 1
A failure occurred in
the SERVOPACK.
A.E40: The setting of
MECHATROLINK
MECHATROLINK
transmission cycle is
Transmission
outside of the speci-
Cycle Setting
fied range.
Error
Confirmation
Optimize the setting of
Check the position
Pn526 (Position Deviation
deviation while the
Overflow Alarm Level at
servo is OFF.
Servo ON).
Optimize the setting of
Pn520 (Position Deviation
Overflow Alarm Level). Or,
–
adjust the setting of
Pn529 or Pn584 (Speed
Limit Level at Servo ON).
• Change the value of
Pn447 (Pressure Feed-
back Loop Deviation
Check the pressure
Overflow Level).
feedback detection
• Adjust the values of
monitor or pressure
Pn442 (Pressure Feed-
feedback loop devia-
back Loop Integral
tion monitor.
Time) and other pres-
sure feedback control
parameters.
Install the external
encoder in the opposite
Check the motor direc-
direction, or change the
tion and the external
setting of Pn002 =
encoder installation ori-
n.X (External
entation.
Encoder Usage) to
reverse the direction.
Check the coupling of Check the mechanical
the external encoder. coupling.
Check the input refer- Reconsider the operating
ence pulse counter. specifications.
Remove the cause of
transmission cycle fluctu-
–
ation at the host control-
ler.
Turn the power supply to
the SERVOPACK OFF and
ON again. If an alarm still
–
occurs, the SERVOPACK
may be faulty. Replace the
SERVOPACK.
Check the setting of the Set the MECHATROLINK
MECHATROLINK trans- transmission cycle to an
mission cycle. appropriate value.
5.1 FT40 Specification
5.1.3 Troubleshooting Alarms
Continued from previous page.
Correction Reference
*1
*1
3-20
*1
–
–
–
–
–
Continued on next page.
5
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