Rockwell-automation 1770-SC A-B Data Highway/Data Highway+ Installatio Manual de usuario descargar pdf (Pagina 4)

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This part of the procedure applies only to the first and last station connectors on the

trunkline.

11..

Install the 150 ohm terminator resistor by inserting it into a one inch length of

shrink tubing and connecting the leads to terminals 1 and 3. The trunkline must be

terminated properly with a terminator resistor located in the station connector at

each end of the trunkline.

22..

To maintain the station connector’s NEMA type 13 rating, plug the unused

trunkline cable clamp on the first and last station connectors. Use the cable plug

provided in the packet. Tighten the cable clamp to hold the cable plug in place.

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The first and last station connectors refer to the physical location along

the trunkline and not to station addresses. Station addresses are independent of

physical locations.

11..

Attach the station connector ground wire to earth ground. The lug accepts a

number of 10 screws.

22..

Mount the terminal block in the enclosure and attach the cover plate. Be sure that

none of the wires are pinched between the cover plate and enclosure.

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Be careful not to damage the gasket of the cover plate. Gasket damage

could nullify the NEMA type 13 rating of the station connector.

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For more information on installing a Data Highway or Data Highway Plus cable

installation, refer to the Data Highway Cable Assembly and Installation Manual

(publication 1770-6.2.1).

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• Terminals for trunkline and dropline

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• NEMA type 13 enclosure • 14.0 x 13.5 x 8.1 cm

• 5.5 x 53 x 3.2 inches

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Supersedes Publication 1770-2.20C-February 1990

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Rockwell-automation 1770-SC A-B Data Highway/Data Highway+ Installatio Manual de usuario Pagina 4