12.2 Alarm Displays
12.2.2 Troubleshooting Alarms
12-17
A.101:
Motor Overcurrent
Detected (The
current to the
motor exceeded
the allowable cur-
rent.)
A malfunction was
caused by noise.
Improve the noise envi-
ronment, e.g. by
improving the wiring or
installation conditions,
and check to see if the
alarm still occurs.
Implement countermea-
sures against noise, such
as correct wiring of the
FG. Use an FG wire size
equivalent to the SERVO-
PACK’s main circuit wire
size.
–
A failure occurred in
the SERVOPACK.
–
Turn the power supply to
the SERVOPACK OFF and
ON again. If an alarm still
occurs, the SERVOPACK
may be faulty. Replace the
SERVOPACK.
–
A.300:
Regeneration
Error
Pn600 (Regenerative
Resistor Capacity) is
not set to 0 and an
External Regenerative
Resistor is not con-
nected to one of the
following SERVO-
PACKs: SGD7S-
R70A, SGD7S-R90A,
SGD7S-1R6A, or
SGD7S-2R8A.
Check it see if an Exter-
nal Regenerative Resis-
tor is connected and
check the setting of
Pn600.
Connect an External
Regenerative Resistor, or
set Pn600 (Regenerative
Resistor Capacity) to 0
(setting unit: ×10 W) if no
Regenerative Resistor is
required.
page 5-57
The jumper between
the regenerative resis-
tor terminals (B2 and
B3) was removed
from one of the fol-
lowing SERVO-
PACKs: SGD7S-
3R8A, SGD7S-5R5A,
SGD7S-7R6A,
SGD7S-120A,
SGD7S-180A, or
SGD7S-200A.
Check to see if the
jumper is connected
between power supply
terminals B2 and B3.
Correctly connect a
jumper.
page 4-16
The External Regener-
ative Resistor is not
wired correctly, or was
removed or discon-
nected.
Check the wiring of the
External Regenerative
Resistor.
Correct the wiring of the
External Regenerative
Resistor.
A failure occurred in
the SERVOPACK.
–
While the main circuit
power supply is OFF, turn
the control power supply
to the SERVOPACK OFF
and ON again.
If an alarm still occurs, the
SERVOPACK may be
faulty.
Replace the SERVO-
PACK.
–
Continued from previous page.
Alarm Number:
Alarm Name
Possible Cause Confirmation Correction
Reference
for Correc-
tion
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