YASKAWA SGD7S Product Manual page 421

Alarm Number:
Possible Cause
Alarm Name
The regenerative pro-
cessing capacity was
exceeded.
The SERVOPACK
regenerative resis-
tance is too small.
A.100:
Overcurrent
A heavy load was
Detected
applied while the Ser-
(An overcurrent
vomotor was stopped
flowed through
or running at a low
the power tran-
speed.
sistor or the heat
sink overheated.)
A malfunction was
caused by noise.
A failure occurred in
the SERVOPACK.
Confirmation
Check the regenerative
load ratio in the Sig-
maWin+ Motion Monitor
Recheck the operating
Tab Page to see how
conditions and load.
frequently the regenera-
tive resistor is being
used.
Check the regenerative
load ratio in the Sig- Change the regenerative
maWin+ Motion Monitor resistance to a value
Tab Page to see how larger than the SERVO-
frequently the regenera- PACK minimum allowable
tive resistor is being resistance.
used.
Check to see if the Reduce the load applied
operating conditions to the Servomotor. Or,
exceed Servo Drive increase the operating
specifications. speed.
Implement countermea-
Improve the noise envi-
sures against noise, such
ronment, e.g. by
as correct wiring of the
improving the wiring or
FG. Use an FG wire size
installation conditions,
equivalent to the SERVO-
and check to see if the
PACK's main circuit wire
alarm still occurs.
size.
Turn the power supply to
the SERVOPACK OFF and
ON again. If an alarm still
–
occurs, the SERVOPACK
may be faulty. Replace the
SERVOPACK.
12.2 Alarm Displays
12.2.2 Troubleshooting Alarms
Continued from previous page.
Correction Reference
*3
–
–
–
Continued on next page.
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