YASKAWA DX100 Maintenance Manual page 521

Alarm Alarm Name Sub
Number Code
4307 SERVO ON
DEFECTIVE
SPEED
Meaning Cause
EAXA board failure
Sub Code: Signifies the axis in Movement of axis
which the alarm occurred when the SERVO
ON process
Connection failure
EAXA board failure
Mechanical failure
Module
failure(motor)
YBK board failure
Remedy
(1)Reset the alarm.(In case of major alarm, turn the power OFF then back
ON.)
(2)If the alarm occurs again, replace the EAXA board. Save the CMOS.BIN
before replacing the board to be safe.
Turn ON the servo power after 5 or more seconds from the alarm
occurrence.
(1)Reset the alarm.(In case of major alarm, turn the power OFF then back
ON.)
(2)If the alarm occurs again, check the connection and inserting state of the
following cables and connectors.
·The SERVOPACK motor power line connector
·The power cable connection of the manipulator cable.
(1)Reset the alarm.(In case of major alarm, turn the power OFF then back
ON.)
(2)If the alarm occurs again, replace the EAXA board. Save the CMOS.BIN
before replacing the board to be safe.
Check that the manipulator is not moving when the servo turned ON.
(1)Reset the alarm.(In case of major alarm, turn the power OFF then back
ON.)
(2)If the alarm occurs again, replace the motor.
Check that the brake has not been released because the brake relay is
broken.