JUKI LK-1900A, Руководство инженера, Страница: 109 / 124

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8. Error E306 8-1) Irregular motor rotations 1-A) There are irregularities in Check the mechanism and look for the section that
Needle thread clamp sensor error the mechanism, such as is particularly overloaded or whether screws are
overloading, etc. loose.
1-B) Motor leads are broken. Disconnect CN45 (yellow) of the MAIN board and
The motor is out of order. check the motor resistance. [See the Pulse Motor/
Solenoid Circuit Diagram.] Replace the motor.
8-2) No sensor signal entry 2-A) The sensor is out of order or Check whether the sensor lamp is turned ON/OFF
Use of Test Mode CP-1 or CP-2 broken. when a metallic plate is moved closer to or separated
from the sensor plane. In the case of no lamp ON/
OFF, the sensor is broken or the connector block is
disconnected.
2-B) The INT board connector is Check the connection of CN65 (yellow) of the INT
disconnected. board
2-C) Sensor mounting position is Check and correct the sensor mounting position.
inadequate.
9. Error E730 9-1) Phase A and Phase B signals 1-A) The encoder cord is broken Confirm whether each signal is delivered to CN14 of
Main shaft motor encoder error A (main shaft motor) do not enter. or out of order. the SDC board. In the case of encoder error,
LED3 on SDC board: Flashing 3 times replace the motor as a whole. [See the Servo Motor
Circuit Diagram.]
1-C) There is internal disconnection Replace the SDC board.
in the SDC board.
10. Error E731 10-1)Position signals U, V, W 1-A) The encoder cord is broken Confirm whether each signal is delivered to CN14
Main shaft motor encoder error B (main shaft motor) do not enter. or out of order. of the SDC board. In the case of encoder error,
LED3 on SDC board: Flashing replace the motor as a whole. [See the Servo Motor
4 times Circuit Diagram.]
1-B) There is internal disconnection Replace the SDC board.
in the SDC board.
11. Error E733 11-1)Irregular motor rotations 1-A) Motor connections are Check whether the connections are correct or broken
Reverse rotation of the main inadequate or broken. around CN16 of the SDC board. [See the Servo Mo-
shaft motor tor Circuit Diagram.]
LED 3 on SDC Board:
Flashing 7 times
11-2)Incorrect encoder signal 2-A) The encoder cord is broken Confirm whether each signal is delivered to CN14 of
transmission or out of order. the SDC board. In the case of encoder error, replace
the motor as a whole. [See the Servo Motor Circuit
Diagram.]
2-B) The driver circuit is out of Replace the SDC board.
order.
Trouble Cause (1) Cause (2) Check and corrective measures