YASKAWA NX100 - Page 167

8.3 Alarm Message List
8-63
4230 REDUCER MON-
ITOR OVER
--- Failed to stop the operation under
the HOLD STOP command.
• Reset the alarm, and then turn ON the
servo again.
• Check the HOLD STOP.
If the error occurs again, replace the servo
control circuit board.
4300 SERVO PARAM-
ETER ERROR
--- The parameter input value is out of
the allowable range.
Reset the value within the allowable range.
4301 CONTACTOR
ERROR
--- An error occurred in the contactor
due to a defective contactor unit or
circuit board.
• The contactor of contactor unit did
not turn ON at servo ON.
• The signal from the contactor
turned OFF while the servo was
ON.
• The signal from the contactor
remains ON when the servo
turned OFF at emergency stop.
• The contactor turned ON while the
servo was OFF for emergency
stop.
• Reset the alarm, and then turn ON the
servo again.
• Check the 24-V power supply for I/O.
If the error occurs again, replace the contac-
tor unit or servo control circuit board or both.
4302 BRAKE CIRCUIT
ERROR
--- • The brake relay signal did not turn
ON when the servo turned ON.
• The brake relay signal turned OFF
while the servo was ON.
• The brake signal remains ON
when the servo turned OFF at
emergency stop.
• The brake signal turned ON while
the servo was OFF for emergency
stop.
• Reset the alarm, and then turn ON the
servo again.
If the error occurs again, replace the contac-
tor unit and/or servo control circuit board.
4303 CONVERTER
READY SIGNAL
ERROR
--- • No response of charge completion
was sent from the converter when
the servo turned ON.
• The SERVO READY signal turned
OFF while the servo was ON.
• The SERVO READY signal
remains ON when the servo
turned OFF at emergency stop.
• The SERVO READY signal turned
ON while the servo was OFF for
emergency stop.
• The primary power supply voltage
is too low.
• The voltage dropped.
• Defective servo control and/or
converter
• Reset the alarm, and then turn ON the
servo again.
• Check the primary power supply voltage.
If the error occurs again, replace the servo
control circuit board and/or converter.
4304 CONVERTER
INPUT POWER
ERROR
--- • No response of primary power
supply input was sent from the
converter when the servo turned
ON.
• The READY 1 signal remains ON
when the servo turned OFF at
emergency stop.
• The READY 1 signal turned ON
while the servo was OFF for
emergency stop.
• Incorrect wiring or voltage drop of
primary power supply
• Defective servo control and/or
converter
• 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.
Alarm Message List
Alarm
Number
Message
Sub
Code
Cause Remedy