YASKAWA Sigma-7 SGD7S Series - Page 601

Alarm Code Alarm Name Possible Cause Confirmation Correction Reference
The regenerative pro-
cessing capacity was
exceeded.
Check the regenera-
tive load ratio in the
SigmaWin+ Motion
Monitor Tab Page to
see how frequently
the Regenerative
Resistor is being
used.
Recheck the oper-
ating conditions and
load.
*2
The SERVOPACK
regenerative resist-
ance is too small.
Check the regenera-
tive load ratio in the
SigmaWin+ Motion
Monitor Tab Page to
see how frequently
the Regenerative
Resistor is being
used.
Change the regener-
ative resistance to a
value larger than the
SERVOPACK min-
imum allowable
resistance.
–
A heavy load was
applied while the Ser-
vomotor was stopped
or running at a low
speed.
Check to see if the
operating conditions
exceed Servo Drive
specifications.
Reduce the load
applied to the Servo-
motor. Or, increase
the operating speed.
–
A malfunction was
caused by noise.
Improve the noise
environment, e.g. by
improving the wiring
or installation condi-
tions, and check to
see if the alarm still
occurs.
Implement counter-
measures against
noise, such as cor-
rect wiring of the FG.
Use an FG wire size
equivalent to the
SERVOPACK’s main
circuit wire size.
–
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.101
(1101h)
Motor Overcur-
rent Detected
(The current to
the motor
exceeded the
allowable cur-
rent.)
The Main Circuit
Cable is not wired cor-
rectly or there is faulty
contact.
Check the wiring. Correct the wiring.
Ä Chap. 5.5
‘Wiring Servo-
motors’
page 107
There is a short-circuit
or ground fault in a
Main Circuit Cable.
Check for short-cir-
cuits across cable
phases U, V, and W,
or between the
ground and cable
phases U, V, and W.
The cable may be
shortcircuited.
Replace the cable.
There is a short-circuit
or ground fault inside
the Servomotor.
Check for short-cir-
cuits across Servo-
motor phases U, V,
and W, or between
the ground and Ser-
vomotor phases U,
V, or W.
The Servomotor may
be faulty. Replace
the Servomotor.
Sigma-7 Series SERVOPACKs
Maintenance
Alarm Displays > Troubleshooting Alarms
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