YASKAWA SGD7S series Product Manual page 166

Alarm Number:
Possible Cause
Alarm Name
The Main Circuit
Cable is not wired
correctly or there is
faulty contact.
There is a short-circuit
or ground fault in a
Main Circuit Cable.
There is a short-circuit
or ground fault inside
the Servomotor.
A.101:
Motor Overcur- There is a short-circuit
or ground fault inside
rent Detected
the SERVOPACK.
(The current to
the motor
exceeded the
allowable cur-
A heavy load was
rent.)
applied while the Ser-
vomotor was stopped
or running at a low
speed.
A malfunction was
caused by noise.
A failure occurred in
the SERVOPACK.
Confirmation
Check the wiring. Correct the wiring.
Check for short-circuits
across cable phases U, The cable may be short-
V, and W, or between circuited. Replace the
the ground and cable cable.
phases U, V, and W.
Check for short-circuits
across Servomotor
The Servomotor may be
phases U, V, and W, or
faulty. Replace the Servo-
between the ground
motor.
and Servomotor phases
U, V, or W.
Check for short-circuits
across the Servomotor
connection terminals U, The SERVOPACK may be
V, and W on the SER- faulty. Replace the SER-
VOPACK, or between VOPACK.
the ground and termi-
nals U, V, or W.
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.
9.1 Alarm Displays
9.1.2 Troubleshooting Alarms
Continued from previous page.
Correction Reference
*1
*1
*1
*1
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Continued on next page.
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