Rockwell-automation 1770-SC A-B Data Highway/Data Highway+ Installatio User Manual download pdf

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(Cat. No. 1770-SC)

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This publication describes the Data Highway Station Connector and the installation

procedures for connecting the station connector to a Data Highway or Data Highway

Plus trunkline cable.

The station connector simplifies Data Highway connections made between the

trunkline and individual droplines, and protects the connections from the industrial

environment. One station connector is required for each dropline. The Station

connector replaces the 1770-XG Data Highway Cable Connector Kit.

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Each station connector includes the following:

• Junction box with removable cover, and terminal block wired with the following:

- 0.05 mfd 500V DC capacitor (terminals 4 and 5)

- Jumper (terminals 7 and 9)

- Ground wire (terminal 10) and earth ground wire with lug

• Packet containing:

-D-shell cable connector hood

- 15-pin female connector

- Packet of assembly hardware for the cable connector

- Terminator resistor (150ohm, 1/4 watt)

- Shrink tubing

- Cable plug

• A copy of this publication

Be sure each station connector you receive has these parts.

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Supersedes Publication 1770-2.20C — February, 1990

To make reliable connections, you should observe the following wiring

recommendations:

• Use Twinaxial Cable (cat. no. 1770-CD, Belden 9463 or equivalent) for the trunkline

and droplines.

• Be sure to connect the ground wire from the station connector to the earth ground.

• Route the twinaxial cable away from sources of electrical interference.

• Make trunkline connections to the upper side of the station connector; dropline

and earth ground connections to the lower side.

By observing these recommendations and those in the Data Highway Cable Assembly

and Installation Manual (publication 1770-6.2.1), you will reduce electrical noise

interference which can be induced into the trunkline and droplines.

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Use the following procedures to properly install each station connector. Read the

entire section before performing the procedures.

11..

Cut the dropline cable to your required length.

. Prepare the dropline cable for assembly. First carefully remove about one inch of

insulation, foil, braided shield, and filler cord from one end of the cable, freeing

the shield drain wire, clear, and blue insulated wires. Strip about 1/8 inch of

insulation from the ends of the insulated wires.

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Summary of Contents

Page 1 - (Cat. No. 1770-SC)

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Rockwell-automation 1770-SC A-B Data Highway/Data Highway+ Installatio User Manual

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