Motor power interrupting device of injection molding machine
AssigneeFanuc Corporation
InventorsYuichi HOSOYA, Hideki KOYAMA
Life of this patent
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Abstract
A controller of an injection molding machine stores used/unused information in relation to each of the maximum number of controllable servo amplifiers, outputs an interruption request signal requesting power interruption in a lump to apart of or all of these plurality of servo amplifiers, and receives a power interruption confirmation signal confirming that the motor power of the servo amplifiers is interrupted. Further, the controller determines, on the basis of the interruption request signal, the power interruption confirmation signal and the used/unused information, whether or not interruption driving the servo motor is normally operated.
Claims1
A motor power interrupting device of an injection molding machine, the injection molding machine comprising:
- n (n≧2) number of servo motors which actuate movable portions;
- m (m≧n) number of servo amplifiers which drive the n number of servo motors;
- and
- a controller which controls the m number of servo amplifiers,
- wherein the controller comprises:
- an interruption request signal output unit which outputs an interruption request signal requesting power interruption in a lump to a part of or all of the n number of servo amplifiers;
- a power interruption confirmation signal receiving unit which receives a power interruption confirmation signal confirming that the power of the servo amplifiers corresponding to the maximum number of servo amplifiers controllable by the controller is interrupted;
- a unit which stores used/unused information corresponding to the information indicating that each of the maximum number of servo amplifiers controllable by the controller is used or unused;
- and
- a determining unit which determines, on the basis of the interruption request signal, the interruption confirmation signal and the used/unused information, whether or not the power interruption is normally operated, and
- wherein the controller is structured such as to interrupt the power of the servo motors by requesting the power interruption to the servo amplifier.
Dependencies are inferred from the claim text.