Single motor power and communication cable
First Claim
1. A combined power and communications cable for use with a motor and a drive unit in an industrial control system comprising:
- first, second and third insulated conductors for delivering three phase electric power, the first, second and third insulated conductors twisted together around a common center and covered by a cable jacket forming a first group;
fourth and fifth insulated conductors for data communication, the fourth and fifth insulated conductors twisted together around a common center and covered by an electrical shield forming a second group; and
a sixth insulated conductor for delivering a protective ground, forming a third group;
wherein the first, second and third groups are twisted together, covered by an electrical shield and covered by a cable jacket.
1 Assignment
0 Petitions
Accused Products
Abstract
A combined power and communications cable for use with a motor and drive unit in an industrial control system is provided. The cable may comprise first, second and third insulated conductors twisted together and covered by a cable jacket (first group); fourth and fifth insulated conductors twisted together and covered by an electrical shield (second group); and a sixth insulated conductor for delivering a protective ground (third group). The first, second and third groups are twisted together, covered by an electrical shield and covered by a cable jacket. Filler may be formed around the fourth and fifth insulated conductors, and may be formed around the first, second and third groups, to substantially maintain round geometric shapes.
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Citations
20 Claims
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1. A combined power and communications cable for use with a motor and a drive unit in an industrial control system comprising:
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first, second and third insulated conductors for delivering three phase electric power, the first, second and third insulated conductors twisted together around a common center and covered by a cable jacket forming a first group; fourth and fifth insulated conductors for data communication, the fourth and fifth insulated conductors twisted together around a common center and covered by an electrical shield forming a second group; and a sixth insulated conductor for delivering a protective ground, forming a third group; wherein the first, second and third groups are twisted together, covered by an electrical shield and covered by a cable jacket. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method for combining power and communications in a cable for use with a motor and a drive unit in an industrial control system comprising:
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twisting together first, second and third insulated conductors for delivering three phase electric power around a common center and covering the first, second and third insulated conductors in a cable jacket forming a first group; twisting together fourth and fifth insulated conductors for data communication around a common center and covering the fourth and fifth insulated conductors in an electrical shield forming a second group; providing a sixth insulated conductor for delivering a protective ground, forming a third group; and twisting together the first, second and third groups and covering the first, second and third groups in an electrical shield and in a cable jacket. - View Dependent Claims (14, 15, 16, 17)
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18. An industrial control system comprising:
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a motor powered by three phase electric power and having an encoder; a drive unit for delivering three phase electric power to the motor and for communicating with the encoder; a combined power and communications cable coupling the motor and the drive unit, the combined power and communications cable comprising; first, second and third insulated conductors for delivering the three phase electric power to the motor, the first, second and third insulated conductors twisted together around a common center and covered by a cable jacket forming a first group; fourth and fifth insulated conductors for communicating between with the encoder, the fourth and fifth insulated conductors twisted together around a common center and covered by an electrical shield forming a second group; and a sixth insulated conductor for delivering a protective ground, forming a third group; wherein the first, second and third groups are twisted together, covered by an electrical shield and covered by a cable jacket. - View Dependent Claims (19, 20)
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Specification