YASKAWA SGD7S series Product Manual page 514

12.2 Alarm Displays
12.2.2 Troubleshooting Alarms
Alarm Number:
Alarm Name
A.d01:
Position Devia-
tion Overflow
Alarm at Servo
ON
A.d02:
Position Devia-
tion Overflow
Alarm for Speed
Limit at Servo ON
A.d10:
Motor-Load Posi-
tion Deviation
Overflow
A.d30:
Position Data
Overflow
A.E71:
Safety Option
Module Detec-
tion Failure
12-38
Possible Cause
The servo was turned
ON after the position
deviation exceeded
Check the position
the setting of Pn526
deviation while the
(Position Deviation
servo is OFF.
Overflow Alarm Level
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
Level at Servo ON)
limits the speed when
the servo is turned –
ON. This alarm occurs
if reference pulses are
input and the setting
of Pn520 (Position
Deviation Overflow
Alarm Level) is
exceeded.
The motor direction Check the motor direc-
and external encoder tion and the external
installation orientation encoder installation ori-
are backward. entation.
There is an error in the
connection between
Check the coupling of
the load (e.g., stage)
the external encoder.
and external encoder
coupling.
The position data
Check the input refer-
exceeded
ence pulse counter.
±1,879,048,192.
There is a faulty con- Check the connection
nection between the between the SERVO-
SERVOPACK and the PACK and the Safety
Safety Option Module. Option Module.
The Safety Option
Module was discon- –
nected.
A failure occurred in
the Safety Option –
Module.
A failure occurred in
–
the SERVOPACK.
Confirmation
Set the position deviation
to be cleared while the
servo is OFF.
Optimize the setting of
Pn526 (Position Deviation
Overflow Alarm Level at
Servo ON).
Set the position deviation
to be cleared while the
servo is OFF.
Optimize the setting of
Pn520 (Position Deviation
Overflow Alarm Level). Or,
adjust the setting of
Pn529 or Pn584 (Speed
Limit Level at Servo ON).
Install the external
encoder in the opposite
direction, or change the
setting of Pn002 =
n.X (External
Encoder Usage) to
reverse the direction.
Check the mechanical
coupling.
Reconsider the operating
specifications.
Correctly connect the
Safety Option Module.
Execute Fn014 (Reset
Option Module Configura-
tion Error) from the Digital
Operator or SigmaWin+
and then turn the power
supply to the SERVO-
PACK OFF and ON again.
Replace the Safety Option
Module.
Replace the SERVO-
PACK.
Continued from previous page.
Correction Reference
page 8-8
page 10-6
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page 12-45
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Continued on next page.