YASKAWA Sigma-7 SGD7S Series - Page 625

Alarm Code Alarm Name Possible Cause Confirmation Correction Reference
A.CF2
(1CF2h)
Timer Stopped
Error in Feed-
back Option
Module Com-
munications
Noise entered the
cable between the
Serial Converter Unit
and SERVOPACK.
– Correct the wiring
around the Serial
Converter Unit, e.g.,
separate I/O signal
lines from the Main
Circuit Cables or
ground.
–
A failure occurred in
the Serial Converter
Unit.
– Replace the Serial
Converter Unit.
–
A failure occurred in
the SERVOPACK.
– Replace the SERVO-
PACK.
–
A.d00
(1d00h)
Position Devia-
tion Overflow
(The setting of
Pn520 (Exces-
sive Position
Error Alarm
Level) was
exceeded by
the position
deviation while
the servo was
ON.)
The Servomotor U, V,
and W wiring is not
correct.
Check the wiring of
the Servomotor’s
Main Circuit Cables.
Make sure that there
are no faulty con-
tacts in the wiring for
the Servomotor and
encoder.
–
The position com-
mand speed is too
fast.
Reduce the position
command speed and
try operating the
SERVOPACK.
Reduce the position
reference speed or
the reference accel-
eration rate, or
reconsider the elec-
tronic gear ratio.
Ä Chap. 6.15.2
‘Setting the
Position Refer-
ence Unit’
page 178
The acceleration of
the position reference
is too high.
Reduce the refer-
ence acceleration
and try operating the
SERVOPACK.
Reduce the acceler-
ation of the position
reference using a
PROFINET com-
mand.
−
The setting of Pn520
(Excessive Position
Deviation Alarm
Level) is too low for
the operating condi-
tions.
Check the setting of
Pn520 to see if it is
appropriate.
Optimize the setting
of Pn520.
Ä Chap. 9.4
‘Precautions to
Ensure Safe
Tuning’
page 299
A failure occurred in
the SERVOPACK.
– Turn the power
supply to the SER-
VOPACK OFF and
ON again. If an
alarm still occurs, the
SERVOPACK may
be faulty. Replace
the SERVOPACK.
–
A.d01
(1d01h)
Position Devia-
tion Overflow
Alarm at Servo
ON
The servo was turned
ON after the position
deviation exceeded
the setting of Pn526
(Excessive Position
Deviation Alarm Level
at Servo ON) while
the servo was OFF.
Check the position
deviation while the
servo is OFF.
Optimize the setting
of Pn526.
Ä Chap. 9.4
‘Precautions to
Ensure Safe
Tuning’
page 299
Sigma-7 Series SERVOPACKs
Maintenance
Alarm Displays > Troubleshooting Alarms
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