Rockwell Automation 1770-SC A-B Data Highway/Data Highway+ Installation Date - Manual

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(Cat. No. 1770-SC)
T To o tth he e IIn nsstta alllle err 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.
P Pu ub blliic ca attiio on n 1 17 77 70 0C C--IIN N0 00 02 2A A--E EN N--P P — — O Oc ctto ob be err 2 20 00 06 6
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.
1 1.. Cut the dropline cable to your required length.
2 2. 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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