YASKAWA SGD7S series Product Manual page 184

Alarm Number:
Possible Cause
Alarm Name
The encoder is wired
incorrectly or there is
faulty contact.
The specifications of
the Encoder Cable are
not correct and noise
entered on it.
The Encoder Cable is
too long and noise
entered on it.
There is variation in
the FG potential
A.Cb0:
because of the influ-
Encoder Echo- ence of machines on
back Error the Servomotor side,
such as a welder.
Excessive vibration or
shock was applied to
the encoder.
A failure occurred in
the encoder.
A failure occurred in
the SERVOPACK.
When using a Direct
Drive Servomotor, the
setting of Pn205 (Mul-
titurn Limit) does not
agree with the
encoder.
The multiturn limit of
the encoder is differ-
A.CC0: ent from that of the
SERVOPACK. Or, the
Multiturn Limit
multiturn limit of the
Disagreement
SERVOPACK has
been changed.
A failure occurred in
the SERVOPACK.
Confirmation
Make sure that the
Check the wiring of the
encoder is correctly
encoder.
wired.
Use a shielded twisted-
pair wire cable or a
screened twisted-pair
–
cable with conductors of
at least 0.12 mm
• Rotary Servomotors:
The Encoder Cable wir-
ing distance must be 50
m max.
–
• Linear Servomotors:
The Encoder Cable wir-
ing distance must be 20
m max.
Properly ground the
Check the condition of
machine to separate it
the Encoder Cable and
from the FG of the
connectors.
encoder.
Reduce machine vibra-
Check the operating tion.
conditions. Correctly install the Ser-
vomotor or linear encoder.
Turn the power supply to
the SERVOPACK OFF and
ON again. If an alarm still
– occurs, the Servomotor or
linear encoder may be
faulty. Replace the Servo-
motor or linear encoder.
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 Correct the setting of
Pn205. Pn205 (0 to 65,535).
Check the setting of
Change the setting if the
Pn205 in the SERVO-
alarm occurs.
PACK.
Turn the power supply to
the SERVOPACK OFF and
ON again. If an alarm still
–
occurs, the SERVOPACK
may be faulty. Replace the
SERVOPACK.
9.1 Alarm Displays
9.1.2 Troubleshooting Alarms
Continued from previous page.
Correction Reference
*1
–
2
.
–
–
–
–
–
*1
*1
–
Continued on next page.
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