9 Inspection, Maintenance, and Troubleshooting
9.1.3 Troubleshooting of Alarm and Warning
9-10
A.730
Dynamic Brake
Overload
(For
SERVOPACKs
500 W to 1.0
kW)
Occurred when the
control power sup-
ply was turned
ON.
A SERVOPACK board fault occurred. Replace the SERVOPACK.
Occurred when the
servomotor was
running and in the
status other than
servo OFF.
A SERVOPACK board fault occurred. Replace the SERVOPACK.
Occurred when the
servomotor was
running in servo
OFF status.
The rotating energy at DB stop exceeds the DB
resistance capacity.
cReduce the motor speed.
dReduce the load moment of inertia.
eReduce the number of times of DB stop
operation.
A SERVOPACK fault occurred. Replace the SERVOPACK.
A.740
Overload of
Surge Current
Limit Resistor
(Detected when
the number of
times of the main
circuit power
ON/OFF ope-
ration exceeds
10 times/2
seconds.)
Occurred when the
control power sup-
ply was turned
ON.
A SERVOPACK board fault occurred. Replace the SERVOPACK.
Occurred during
operations other
than the main cir-
cuit ON/OFF.
A SERVOPACK board fault occurred. Replace the SERVOPACK.
Occurred at the
main circuit power
supply is ON/OFF
operation.
The inrush current limit resistor operation fre-
quency at the main circuit power supply ON/
OFF operation exceeds the allowable range.
Reduce the main circuit power supply ON/
OFF operation frequency to five times/min. or
less.
A SERVOPACK fault occurred. Replace the SERVOPACK.
A.7A0
Heat Sink
Overheated
(Detected when
the heat sink
temperature
exceeds 100 °C.)
Occurred when the
control power sup-
ply was turned ON
A SERVOPACK fault occurred. Replace the SERVOPACK.
The overload alarm has been reset by turning
OFF the power too many times.
Change the alarm resetting method.
Occurred when the
main circuit power
supply was turned
ON or while the
servomotor was
running.
The load exceeds the rated load. Reconsider the load and operation conditions,
or reconsider the servomotor capacity.
The SERVOPACK ambient temperature exceeds
55°C.
The ambient temperature must be 55°C or less.
A SERVOPACK fault occurred. Replace the SERVOPACK.
The overload alarm has been reset by turning
OFF the power too many times.
Change the alarm resetting method.
Faulty connection of SERVOPACK board and
thermostat switch
Replace the SERVOPACK.
The overload or the regenerative energy exceeds
the resistor capacity.
Reconsider the load and operation conditions.
Incorrect mounting of SERVOPACK (direction
and distance to the peripheral devices)
Heat radiation from the panel or heat around the
SERVOPACK.)
The ambient temperature for SERVOPACK
must be 55 °C or less.
A SERVOPACK fan fault occurred. Replace the SERVOPACK.
Table 9.3 Alarm Display and Troubleshooting (Cont’d)
Alarm
Display
Alarm Name
Situation at Alarm
Occurrence
Cause Corrective Actions
SIEPS80000025.book 10 ページ ２００４年１０月２５日 月曜日 午前１１時５７分
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