YASKAWA SGDS Sigma III Series User Manual page 302

Alarm Situation at Alarm
Alarm Name
Display
A.410
Undervoltage Occurred when the
control power
supply was turned
ON.
Occurred when the
main circuit power
supply was turned
ON.
Occurred during
normal operation.
A.510
Overspeed Occurred when the
control power
supply was turned
ON.
Occurred when
servo was ON.
Occurred when the
servomotor started
running or in a high
speed run.
A.511
Dividing Pulse Occurred while the
servomotor was
Output
running.
Overspeed
A.520
Vibration Alarm Occurred while the
servomotor was
running.
A.710
Overload: Occurred when the
Momentary control power
supply was turned
Overload
ON.
Occurred when the
servo was turned
ON.
Table 10.3 Alarm Display and Troubleshooting (Cont'd)
Occurrence
A SERVOPACK board fault occurred.
The AC power supply voltage is 120 V or less.
The fuse of the SERVOPACK is blown out.
The inrush current limit resistor is disconnected, and
result in an abnormal power supply voltage or in an
overload of the inrush current limit resistor.
A SERVOPACK fault occurred.
The AC power supply voltage was lowered, and
large voltage drop occurred.
A temporary power failure occurred.
The servomotor cable shorts to ground.
The servomotor shorts to ground.
A SERVOPACK fault occurred.
A SERVOPACK board fault occurred.
The order of phases U, V, and W in the servomotor
wiring is incorrect.
The encoder wiring is incorrect.
Malfunction occurred due to noise interference in
the encoder wiring.
A SERVOPACK fault occurred.
The order of phases U, V, and W in the servomotor
wiring is incorrect.
The encoder wiring is incorrect.
Malfunction occurred due to noise interference in
the encoder wiring.
The position or speed reference input is too large.
The setting of the reference input gain is incorrect.
A SERVOPACK board fault occurred.
The output frequency of the dividing pulse exceeds
1.6 MHz.
Abnormal vibration was detected.
A SERVOPACK board fault occurred.
The servomotor wiring is incorrect or the connection
is faulty.
Cause
Replace the SERVOPACK.
The AC power supply voltage must be within the
specified range.
Replace the SERVOPACK.
Replace the SERVOPACK. Check the power
supply voltage, and reduce the number of times
that the main circuit is turned ON or OFF.)
Replace the SERVOPACK.
The AC power supply voltage must be within the
specified range.
Clear and reset the alarm, and restart the
operation.
Repair or replace the servomotor cable.
Replace the servomotor.
Replace the SERVOPACK.
Replace the SERVOPACK.
Correct the servomotor wiring.
Correct the encoder wiring.
Take measures against noise for the encoder
wiring.
Replace the SERVOPACK.
Correct the servomotor wiring.
Correct the encoder wiring.
Take measures against noise for the encoder
wiring.
Reduce the reference value.
Correct the reference input gain setting.
Replace the SERVOPACK.
Lower the setting of the PG dividing pulse
(Pn212).
Reduce the servomotor speed.
Reduce the servomotor speed.
Reduce the speed loop gain (Pn100).
Replace the SERVOPACK.
Correct the servomotor wiring.
10.1 Troubleshooting
Corrective Actions
10-11