YASKAWA SGD7S series Product Manual page 186

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 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
exceeded
Position Data
±1,879,048,192.
Overflow
The difference
between the clear-
ance offset reference
and gap exceeded
Pn6FC (Clearance
Position Deviation
A.d40: Error Level).
Clearance
Wiring of the gap sen-
Position Deviation
sor is incorrect.
Error
A failure occurred in
the gap sensor.
A failure occurred in
the SERVOPACK.
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).
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.
Operate the system so
that deviation does not
Check the amount of exceed the setting of
deviation during clear- Pn6FC. Or, set the clear-
ance control. ance position deviation
error level to the optimum
level.
Check the wiring of the Correctly wire the gap
gap sensor. sensor.
Check the output volt-
Replace the gap sensor if
age from the gap sen-
the output is not correct.
sor.
The SERVOPACK may be
– faulty. Replace the SER-
VOPACK.
9.1 Alarm Displays
9.1.2 Troubleshooting Alarms
Continued from previous page.
Correction Reference
page 5-7
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