Back to results
US 6,686,712 B2Granted
Motor network control system
AssigneeMitsubishi Denki Kabushiki Kaisha
InventorsMitsuyasu Numaguchi, Hiroaki Watano, Daisuke Matsuo
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeMitsubishi Denki Kabushiki Kaisha
InventorsMitsuyasu Numaguchi, Hiroaki Watano, Daisuke Matsuo
Estimating the term…
A motor network control system is provided which is capable of reducing the wiring length of a power cable and in which upon replacement of a motor or an inverter of a specific motor unit, no adverse influence is exerted on the other motor units. A power cable 7 and a communication cable 8 connecting between a plurality of motor units 30a-30c, each of which includes a motor 4, an inverter 5 and a communication part 6, extend successively from a power supply 1 and a network control computer 2, respectively, to the respective motor units 30a-30c in such a manner that the motor units are connected with each other in a cascade manner from a preceding one to a following one. In addition, each of the motor units includes a connection board 11 on which an inverter 5 and a communication part 6 are installed. The power cable 7 and the communication cable 8 are connected with the respective inverters and the respective communication parts through connection terminal blocks, respectively, each of which includes a cable connector for connecting the cables from a preceding motor unit and the cables to a following motor with each other, and a terminal block fixture for detachably fixing the associated connection terminal block to the associated inverter or the associated communication part.
A motor network control system comprising:
A motor network control system comprising:
Dependencies are inferred from the claim text.
Drawings are temporarily unavailable. Open the PDF at USPTO
From the US filing history. Foreign family members aren’t listed.
Bases, e.g. strip, block, panel: terminal blocks
For starting dynamo-electric motors or dynamo-electric converters: for starting two or more dynamo-electric motors
Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors: for speed regulation of two or…
Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors: controlling two or more AC…
Term ended 15 Apr 2022 (estimated)
This application is based on Application No. 2001-343143, filed in Japan on Nov. 8, 2001, the contents of which are hereby incorporated by reference.
1. Field of the Invention
This invention relates to a motor network control system for controlling a plurality of inverter built-in motors through network communications.
FIG. 1 is a view illustrating the schematic construction of a motor network control system according to one embodiment of this invention.
FIG. 2 is a view illustrating the construction of each motor unit of the motor network control system according to the present invention.
FIG. 3 is a view illustrating one example of a connection terminal block used in the present invention.
Now, preferred embodiments of the present invention will be described in detail while referring to the accompanying drawings.
Embodiment 1
FIG. 1 shows the schematic construction of a motor network control system according to one embodiment of the present invention. In this figure, the motor network control system illustrated includes a power supply 1, a network control computer 2, a plurality of motor units 30a-30c, a power cable 7 and a communication cable 8. Each of the motor units 30a-30c has a motor 4, a control inverter 5 and a communication part 6. A reactor 9 is associated with a second embodiment of the present invention and hence its description is omitted here, but will be given later with reference to the second embodiment. Here, note that three motor units 30a-30c are shown as an example, but two or four or more motor units may instead be employed.