YASKAWA NX100 - Page 168

8.3 Alarm Message List
8-64
4305 CONVERTER
CIRCUIT
CHARGE
ERROR
--- • No response (READY 2 signal) of
charge completion was sent from
the converter when the servo
turned ON.
• The READY 2 signal turned OFF
while the servo was ON.
• The READY 2 signal remains ON
when the servo turned OFF at
emergency stop.
• The READY 2 signal turned ON
while the servo was OFF for
emergency stop.
• Incorrect wiring and/or voltage
drop of primary power supply
• Defective servo control circuit
board, converter, and/or amplifier
• Check the wiring for the primary power sup-
ply of the SERVOPACK.
• Confirm that the power supply voltage is
170V or more.
If the error occurs again, replace the servo
control circuit board and/or converter.
4306 AMPLIFIER
READY SIGNAL
ERROR
--- • No response "Power ON" was
sent from the amplifier when the
servo turned ON.
• The amplifier READY signal
turned OFF while the servo was
ON.
• The amplifier READY signal
remains ON when the servo
turned OFF at emergency stop.
• The amplifier READY signal
turned ON while the servo was
OFF for emergency stop.
• Defective servo control circuit
board, converter, and/or amplifier
• Check the wiring for the primary power sup-
ply of the SERVOPACK.
• Confirm that the power supply voltage is
170V or more.
If the error occurs again, replace the
WRCA01 circuit board, servo control circuit
board, converter, and/or amplifier.
4307 SERVO ON
SPEED ERROR
--- The motion speed of the encoder
before the dynamic brake turns
OFF in servo ON sequence
exceeded the threshold for a cer-
tain period.
• The servo power supply turned
ON while the manipulator (motor
and encoder) was moving.
The control power supply cannot be turned
ON while the manipulator is moving.
Stop the manipulator motion, and then turn
ON the servo power supply.
4308 VOLTAGE DROP
(CONVERTER)
--- The DC power voltage supplied to
the SERVOPACK amplifier dropped
below 143V due to:
- Low voltage of the primary
power supply
- Open phase
- Defective converter
- Defective servo control
circuit board
• Check the wiring for the primary power sup-
ply of the SERVOPACK.
• Confirm that the power supply voltage is
170V or more.
If the error occurs again, replace the servo
control circuit board, servo control circuit
board, and/or converter.
4309 DEFECTIVE
ENCODER
INTERNAL DATA
--- Serial encoder internal parameter
error occurred.
• Reset the alarm, and then perform the
home positioning again. Turn the power
OFF then back ON.
If the error occurs again, replace the motor of
the corresponding axis.
4310 ENCODER
OVERHEAT
--- The temperature of the encoder
exceeded 100 °C.
• Encoder thermistor failure
• Review the load condition and ambient
operating temperature.
• Confirm that the primary power supply volt-
age is 200V + 10%.
If the error occurs again, replace the servo
control circuit board or the motor.
Alarm Message List
Alarm
Number
Message
Sub
Code
Cause Remedy