– 223 –
13.Error E306
13-1)Needle thread clamp pulse
1-A) There is a certain obstacle in
Check the mechanical block to see if there is any
Needle thread clamp position error
motor fails to properly work.
the mechanical block.
position with a heavy load or any section caught
by something.
1-B) The driver circuit is out of order.
Replace the MAIN board.
1-C) Motor defective
Measure the resistance of the motor winding by means
of a circuit tester.
13-2)The sensor is not turned ON.
2-A) Sensor defective
Check the sensor with the check program I_03.
2-B) Disconnection of connector
Check CN66 of INT board.
2-C) Sensor mounting inadequate
Check the operation with the check program I_08.
14. Error E730
14-1)Main shaft motor: No signal
1-A) The motor is out of order.
Confirm whether each signal is delivered to CN14 of
Main shaft motor encoder error A
entry in Phase A and Phase B.
the SDC board.
LED3 on SDC board: Flashing
CN14_6: Phase A
3 times
CN14_7: Phase B
CN14_2: GND
Replace the motor if there is no signal change as a
result of manual turning.
1-B) The signal input circuit is out
Replace the SDC board.
of order.
15. Error E731
15-1)Main shaft motor: No signal
1-A) The motor is out of order.
Confirm whether each signal is delivered to CN14 of
Main shaft motor encoder error B
entry in Phase U, Phase V,
the SDC board.
LED3 on SDC board: Flashing
and Phase W.
CN14_3: Phase U
4 times
CN14_4: Phase V
CN14_5: Phase W
CN14_2: GND
Replace the motor if there is no signal change as a
result of manual turning.
1-B) The signal input circuit is out
Replace the SDC board.
of order.
16. Error E733
16-1)The main shaft motor is
1-A) Motor revolutions are unstable.
Check whether coupling for connection of main shaft
Main shaft motor reverse turn
reversing.
and motor is loose.
error
LED3 on SDC board: Flashing
7 times
Replace the motor.
17. Error E811
17-1)Power source voltage is
1-A) There are variations or unusual
Check the AC input power line.
Overvoltage error
beyond 280 V AC.
rise in the AC input power line.
LED3 on SDC board: Flashing
8 times
Trouble
Cause (1)
Cause (2)
Check and corrective measures