YASKAWA SGLFW User Manual page 386

Alarm Alarm Name Situation at Alarm
Display
A.71
Overload Occurred when the
A.71: High Load control power sup-
A.72
A.72: Low Load ply was turned ON.
Occurred when the
servo was ON.
Occurred when the
servomotor did not
run by the refer-
ence input.
Occurred during
normal operation.
A.73
Dynamic Brake Occurred when the
Overload control power sup-
ply was turned ON.
Occurred when the
servomotor was
running and in a sta-
tus other than servo
OFF.
Occurred when the
servomotor was
running in servo
OFF status.
A.74
Overload of Occurred when the
Surge Current control power sup-
Limit Resistor ply was turned ON.
(Detected when
Occurred during
the number of
operations other
times that the
than the turning
main circuit's
ON/OFF of the
power is turned
main circuit.
ON or OFF more
Occurred at the
than 10 times/2
main circuit power
seconds.)
supply ON/OFF
operation.
A.7A
Heat Sink Occurred when the
Overheated control power sup-
(Detected when ply was turned ON.
the heat sink tem-
Occurred when the
perature exceeds
main circuit power
× °
100 C.)
supply was turned
ON or while the ser-
vomotor was run-
ning.
Table 11.5 Alarm Display and Troubleshooting (Cont'd)
Occurrence
A SERVOPACK board fault occurred.
The servomotor wiring is incorrect or the connection
is faulty.
The encoder wiring is incorrect or the connection is
faulty.
A SERVOPACK fault occurred.
The servomotor wiring is incorrect or the connection
is faulty.
The encoder wiring is incorrect or the connection is
faulty.
The starting force exceeds the maximum force.
The polarity detection is not performed properly
(when Pn080.0 = 1 is set.)
A SERVOPACK fault occurred.
The actual force exceeds the rated force or the start-
ing force largely exceeds the rated force.
Temperature in the SERVOPACK panel is high.
A SERVOPACK fault occurred.
A SERVOPACK board fault occurred.
A SERVOPACK board fault occurred.
The kinetic energy at a DB stop exceeds the DB
resistance capacity.
A SERVOPACK fault occurred.
A SERVOPACK board fault occurred.
A SERVOPACK board fault occurred.
The surge current limit resistor operation frequency
at the main circuit power supply ON/OF operation
exceeds the allowable range.
A SERVOPACK fault occurred.
A SERVOPACK fault occurred.
The overload alarm has been reset by turning OFF
the power too many times.
The load exceeds the rated load.
The SERVOPACK ambient temperature exceeds
°C
55 .
A SERVOPACK fault occurred.
Cause
Replace the SERVOPACK.
Correct the servomotor wiring.
Correct the encoder wiring.
Replace the SERVOPACK.
Correct the servomotor wiring.
Correct the encoder wiring.
Reconsider the load and operation conditions, or
reconsider the servomotor capacity.
Correct the settings for the polarity detection
related parameter.
Replace the SERVOPACK.
Reconsider the load and operation conditions, or
reconsider the linear servomotor capacity.
Reduce the in-panel temperature to 55
Replace the SERVOPACK.
Replace the SERVOPACK.
Replace the SERVOPACK.
Reduce the motor speed,
Reduce the load mass, or
Reduce the number of times of the DB stop
operation.
Replace the SERVOPACK.
Replace the SERVOPACK.
Replace the SERVOPACK.
Reduce the number of times that main circuit's
power supply can be turned ON/OFF to 5 times/
min. or less.
Replace the SERVOPACK.
Replace the SERVOPACK.
Change the method to reset the alarm.
Reconsider the load and operation conditions, or
reconsider the servomotor capacity.
The ambient temperature must be 55°C or less.
Replace the SERVOPACK.
11.1 Troubleshooting
Corrective Actions
°
or less.
11-11
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