10 Inspection, Maintenance, and Troubleshooting
10.1.5 Troubleshooting of Alarm and Warning
10-10
A.71
A.72
Overload
A.71:
Instantaneous
Peak Load
A.72:
Continuous Peak
Load
Occurred when the
control power sup-
ply was turned ON.
A SERVOPACK fault occurred. Replace the SERVOPACK.
Occurred when the
servo was ON.
The servomotor wiring is incorrect or the connection
is faulty.
Correct the servomotor wiring.
The encoder wiring is incorrect or the connection is
faulty.
Correct the encoder wiring, or check if the con-
nector is inserted securely.
A SERVOPACK fault occurred. Replace the SERVOPACK.
Occurred when the
servomotor did not
run by the refer-
ence input.
The servomotor wiring is incorrect or the connection
is faulty.
Correct the servomotor wiring.
The encoder wiring is incorrect or the connection is
faulty.
Correct the encoder wiring, or check if the con-
nector is inserted securely.
The starting torque exceeds the maximum torque. Reconsider the load and operation conditions, or
reconsider the servomotor capacity.
A SERVOPACK fault occurred. Replace the SERVOPACK.
Occurred during
normal operation.
The actual torque exceeds the rated torque. Reconsider the load and operation conditions, or
reconsider the servomotor capacity.
A SERVOPACK fault occurred. Replace the SERVOPACK.
A.73
Dynamic Brake
Overload
Occurred when the
control power sup-
ply was turned ON.
A SERVOPACK fault occurred. Replace the SERVOPACK.
Occurred when the
servomotor was
running and in a sta-
tus other than servo
OFF.
A SERVOPACK fault occurred. Replace the SERVOPACK.
Occurred when the
servomotor was
running in servo
OFF status.
The rotating energy at a DB stop exceeds the DB
resistance capacity.
cReduce the motor speed,
dReduce the load moment of inertia, or
eReduce the number of times of the DB stop
operation.
A SERVOPACK fault occurred. Replace the SERVOPACK.
A.74
Overload of
Inrush Current
Limit Resistor
Occurred when the
control power sup-
ply was turned ON.
A SERVOPACK fault occurred. Replace the SERVOPACK.
Occurred during
operations other
than the turning
ON/OFF of the
main circuit.
A SERVOPACK fault occurred. Replace the SERVOPACK.
Occurred at the
main circuit power
supply ON/OFF
operation.
The main circuit power supply ON/OFF operation is
repeated frequently.
Reduce the number of times that main circuit’s
power supply ON/OFF operation .
A SERVOPACK fault occurred. Replace the SERVOPACK.
A.7A
Heat Sink
Overheated
Occurred when the
control power sup-
ply was turned ON.
A SERVOPACK fault occurred. Replace the SERVOPACK.
Occurred during
normal operation.
The load exceeds the rated load. Reconsider the load and operation conditions, or
reconsider the servomotor capacity.
The SERVOPACK surrounding air temperature
exceeds 55°C.
The surrounding air temperature must be 55°C or
less.
A SERVOPACK fault occurred. Replace the SERVOPACK.
Cooling is not sufficient by natural convection or
fun.
Reconsider the installation according to the SER-
VOPACK mounting instructions.
Table 10.5 Alarm Display and Troubleshooting (cont’d)
Alarm
Display
Alarm Name
Situation at Alarm
Occurrence
Cause Corrective Actions
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