YASKAWA E-S Series Product Manual page 233

Alarm Number:
Possible Cause
Alarm Name
The Servomotor Power
Cable is not wired cor-
rectly or there is faulty
contact.
There is a short-circuit
in the Servomotor
Power Cable or a Ser-
vomotor power wire (U,
V, or W) is in contact
with the FG.
There is a short-circuit
inside the Servomotor
or contact with the FG.
There is a short-circuit
A.100:
inside the SERVO-
Overcurrent
PACK or contact with
Detected
the FG.
(An overcurrent
flowed through
A heavy load was
the power
applied while the Ser-
transistor.)
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.
Check for short-circuits
across Servomotor
phases U, V, and W, or
between the FG and Ser-
vomotor phases U, V, and
W.
Check for short-circuits
across Servomotor
phases U, V, and W, or
between the FG and Ser-
vomotor phases U, V, or
W.
Check for short-circuits
across the Servomotor
connection terminals U, V,
and W on the SERVO-
PACK, or between the FG
and terminals U, V, or W.
Check to see if the oper-
ating conditions exceed
Servo Drive specifica-
tions.
Improve the noise envi-
ronment, e.g. by improv-
ing the wiring or
installation conditions,
and check to see if the
alarm still occurs.
−
10.1 Alarm and Warning Displays
10.1.3 Troubleshooting Alarms
Continued from previous page.
Reference
Correction
Correction
Correct the wiring.
The cable may be short-
circuited. Replace the
Servomotor Power
Cable.
page 4-11
The Servomotor may be
faulty. Replace the Ser-
vomotor.
The SERVOPACK may
be faulty. Replace the
SERVOPACK.
Reduce the load applied
to the Servomotor. Or,
−
increase the operating
speed.
Implement countermea-
sures against noise,
such as correct wiring
of the FG. Or, replace
−
the FG wire with a wire
of a size that is suitable
for product specifica-
tions.
Turn the power supply
to the SERVOPACK
OFF and ON again. If an
−
alarm still occurs, the
SERVOPACK may be
faulty. Replace the SER-
VOPACK.
for
10
10-7