Method and apparatus for supplying data and power to panel-supported components

• US 6,487,091 B2
• Filed: 09/28/1999
• Issued: 11/26/2002
• Est. Priority Date: 09/28/1999
• Status: Expired due to Term

• Current Assignee: Allen-Bradley Company LLC (Rockwell Automation, Inc.)
• Original Assignee: Rockwell Automation Technologies Incorporated (Allen-Bradley Co., Inc.)
• Inventors: Malkowski, Chester Jr., Heberlein, G. Erich Jr., Litzau, Steven J.
• Primary Examiner(s): Gibson, Randy W.
• Assistant Examiner(s): BUI, HUNG S
• Application Number:
  US09/406,506
• Publication Number:
  US 20020048161A1
• Time in Patent Office: 1,155 Days
• Field of Search: 361/826, 361/827, 361/752, 361/753, 361/799, 361/816, 361/818, 361/800, 361/801, 361/802, 361/803, 361/789, 174/35.R, 174/35.GC, 174/51, 174/72.A, 174/72.R, 174/71.R, 174/72.B, 174/71.B, 174/70.C, 174/49, 439/502, 439/505, 439/404, 439/405, 439/658, 439/73, 439/76.1, 439/76.2, 439/79, 439/82, 439/249
• US Class Current: 361/826
• CPC Class Codes: H02B 1/202 Cable lay-outs
• CPC Class Codes: H02B 1/36 with withdrawable units

Abstract

A technique for supplying power and data signals to panel-mounted components includes distribution of power and data conductors in a trunk wireway and further distribution to component locations via drop cable assemblies disposed in drop wireways. The drop cable assemblies and trunk cable assemblies may include identical cable. The cables have a plurality of parallel conductors in an insulated jacket. Connectors are mounted on the drop cable assemblies for receiving plug-in component cable assemblies routed to individual components mounted within component panels or bays. The components are thus electrically coupled in parallel with one another and may receive both power and data signals via the drop and trunk cable assemblies coupled to a network. Individual components may be independent installed and removed for servicing with interrupting service to upstream or downstream components in the system.

Claims

1. An electrically wired device enclosure comprising:

a first enclosed cable routing path extending along at least one enclosed device mounting area;

a trunk cable assembly disposed and enclosed in the first routing path and including a trunk cable having a plurality of conductors electrically coupled to a tap connector;

a second enclosed cable routing path extending generally transverse to the first routing path; and

a drop cable assembly disposed and enclosed in the second routing path and including a drop cable having a plurality of conductors electrically coupled to at least one device connector, the conductors of the drop cable being electrically coupled to the conductors of the trunk cable via the tap connector, the device connector being configured to mate with a device cable from a device disposed and enclosed in the device area, the device connector including insulation piercing elements for contacting the conductors of the drop cable through an insulation layer of the drop cable.

2. The enclosure of claim 1, wherein the first and second routing paths include first and second wireways, respectively, and wherein the trunk and drop cable assemblies are disposed within the respective first and second wireways.

3. The enclosure of claim 1, wherein the trunk cable, the drop cable, the tap connector and the device connector are configured to transmit both electrical power and data signals between the a device disposed in the device area and a remote location.

4. The enclosure of claim 1, wherein the trunk cable is substantially identical to the drop cable.

5. The enclosure of claim 1, wherein the device connector includes a receptacle accessible for mating with a device cable.

6. The enclosure of claim 2, further comprising power conductors routed within the second wireway for supplying electrical power to at least one device disposed within the device mounting area, and wherein the power conductors and the drop cable have the same electrical class rating.

7. The enclosure of claim 6, wherein the electrical class rating is an NEC Class 1 rating.

8. A support for electrical components, the support comprising:

an enclosed component mounting area;

a first enclosed wiring path extending to a location adjacent to the component mounting area;

a first supply cable disposed and enclosed in the first wiring path, the first supply cable having first pairs of power conductors and data conductors disposed in an insulative jacket;

a second enclosed wiring path extending from the location in a direction along the mounting area;

a second supply cable disposed and enclosed in the second wiring path, the second supply cable having second pairs of power conductors and data conductors disposed in an insulative jacket, power and data conductors of the second supply cable being electrically coupled to respective power and data conductors of the first supply cable; and

a plurality of connectors coupled to the second supply cable, each connector including an interface having conductive members electrically coupled to the power and data conductors of the second supply cable, each interface being configured for receiving a mating device cable assembly for transmitting power and data signals to a device disposed and enclosed in the component mounting area, the connectors being disposed to couple devices electrically in parallel with one another, wherein the power and data conductors of the second supply cable are disposed in generally parallel orientation with respect to one another, and wherein the conductive members of the connectors are configured to pierce the insulative jacket of the second supply cable to contact the power and data conductors.

9. The support of claim 8, wherein the first and second wiring paths include first and second wireways, respectively, and wherein the first and second cables are disposed with the respective first and second wireways.

10. The support of claim 8, wherein the interface of each connector includes a receptacle for receiving a mating connector element of a device cable assembly.

11. The support of claim 8, wherein the connectors are supported on a panel, and wherein the interface of each connector is accessible from a first side of the panel and the second supply cable extends along a second side of the panel opposite from the first side.

12. The support of claim 11, wherein each connector includes an integral retaining element for removably supporting the connector within an aperture of the panel.

13. The support of claim 12, wherein each retaining element of each connector is disposed adjacent to the respective connector interface, and when a device is electrically coupled to the interface the connector is prevented from being removed from the panel by contact between the device cable assembly and the retaining element.

14. The support of claim 8, wherein the first and second supply cables are substantially identical to one another.

15. An electrical component system comprising:

an enclosed component mounting area;

a plurality of electrical components disposed and enclosed in the mounting area;

a first enclosed wiring path extending to a location adjacent to the component mounting area;

a first supply cable disposed and enclosed in the first wiring path, the first supply cable having first pairs of power conductors and data conductors disposed in an insulative jacket;

a second enclosed wiring path extending from the location in a direction along the mounting area;

a second supply cable disposed and enclosed in the second wiring path, the second supply cable having second pairs of power conductors and data conductors disposed in an insulative jacket, power and data conductors of the second supply cable being electrically coupled to respective power and data conductors of the first supply cable;

a plurality of connectors coupled to the second supply cable, each connector including an interface having conductive members electrically coupled to the power and data conductors of the second supply cable, wherein the power and data conductors of the second supply cable are disposed in generally parallel orientation with respect to one another, and wherein the conductive members of the connectors are configured to pierce the insulative jacket of the second supply cable to contact the power and data conductors; and

a plurality of device cable assemblies, a device cable assembly being coupled between respective interfaces and components for transmitting power and data signals to the respective components electrically in parallel with one another.

16. The system of claim 15, wherein the first and second wiring paths include first and second wireways, respectively, and wherein the first and second supply cables are disposed within the respective first and second wireways.

17. The system of claim 15, wherein the interface of each connector includes a receptacle for receiving a mating connector element of a respective device cable assembly.

18. The system of claim 15, wherein the connectors are supported on a panel extending along the second wiring path, and wherein the interface of each connector is accessible from a first side of the panel and the second supply cable extends along a second side of the panel opposite from the first side.

19. The system of claim 15, wherein each connector includes an integral retaining element for removably supporting the connector within an aperture of the panel.

20. The system of claim 19, wherein each the retaining element of each connector is disposed adjacent to the respective connector interface, and the connector is prevented from being removed from the panel by contact between the respective device cable assembly and the retaining element.

21. The system of claim 15, wherein the first and second supply cables are substantially identical to one another.

22. The system of claim 15, further comprising power conductors routed within the second wiring path for supplying electrical power to at least one component, and wherein the power conductors and the second supply cable have the same electrical class rating.

23. The system of claim 22, wherein the electrical class rating is an NEC Class 1 rating.

25. The method of claim 21, the drop cable is disposed in the second wiring path on a planar panel supporting the connectors, and wherein the receptacle of each connector is accessible via an aperture in the planar panel.

26. The method of claim 21, wherein a plurality of drop cables are coupled to the trunk cable, each drop cable being disposed in a respective second wiring path for supplying power and data to electrical components disposed in mounting areas adjacent to each second wiring path.

24. A method for supplying data and power to panel-mounted electrical components, the method comprising the steps of:

disposing and enclosing a trunk cable in a first enclosed wiring path adjacent to an enclosed component mounting area, the trunk cable including first pairs of power and data conductors in an insulative jacket;

disposing and enclosing a drop cable in a second enclosed wiring path, the drop cable including second pairs of power and data conductors in an insulative jacket, the power and data conductors of the drop cable being electrically coupled to the power and data conductors of the trunk cable;

coupling a plurality of connectors to the drop cable, each connector including a receptacle routing power and data signals from the drop cable conductors, the connectors being coupled to the drop cable by forcing insulation piercing conductive elements of each connector through an insulative cover of the drop cable; and

coupling a plurality of electrical components disposed and enclosed in the mounting area electrically in parallel with one another via respective device cable assemblies coupled to the receptacles.