Rockwell Automation 1786-TPST2T User Manual

Installation Instructions

ControlNet IP67 Tap and Cable Assembly Kit
Installation Instructions

Cat. No.1786-TCT2BD1, -TPST2T, -TPRT2T

What’s in This Document

This document describes how to install the ControlNet IP67 Tap and Cable Assembly Kit.
The kit is available in three versions, as shown in the table below. All kits are identical, except

for the 1-meter drop cable.

for this version of the drop able order this kit

TNC to Straight BNC (TNC at tap body; BNC at node
end)

TNC to Straight TNC (TNC at tap body; TNC at node
end)

TNC to Right-angle TNC (TNC at tap body; TNC at node
end)

1786-TCT2BD1

1786-TPST2T

1786-TPRT2T

The kit is made up of a tap body and a 1-meter drop cable with overmolded connectors. The
drop cable has a TNC connector at the tap body end and either a BNC or TNC connector at
the ControlNet node end (depending on the version of the kit you order). The tap and cable
are rated to IP67 when mated to a sealed connector, which means they are water-tight.

Publication 1786-IN017B-EN-P - May 2004

2 ControlNet IP67 Tap and Cable Assembly Kit Installation Instructions

Topic Page

Why Use Sealed Media Components? 5

Select a Location to Install Sealed Components 7

Install the Components 8

Terminate the Cable 9

Apply Heat-shrink Tubing 12

Connect ControlNet Segments in a Network Topology 14

Specifications 15

The modular design of the kit lets you disconnect the devices at either the end of the drop
cable, or at the tap port located on the tap body, without disrupting communications to the
rest of the network. You can permanently disconnect a tap from a device by installing a tap
dummy load (1786-TCAP) at the tap end of the drop cable.

TIP

IMPORTANT

The 1786-TCAP is compatible only with the 1786-TCT2BD1 drop
cable. You can use the 1786-TCT2BD1 drop cable with the
1786-TPRT2T tap body.

No more than one tap should be disconnected at the body at a time and
no more than 10% of the taps in a network may be terminated with tap
dummy loads (1786-TCAP). Failure to adhere to these rules may cause
excessive network errors and/or loss of network communications.

Publication 1786-IN017B-EN-P - May 2004

ControlNet IP67 Tap and Cable Assembly Kit Installation Instructions 3

The kit also includes other items, such as a DIN rail mounting bracket and screws. See Table
1 below for a complete listing of the kit’s contents.

Table 1 ControlNet IP67 Tap and Cable Assembly Kit Contents

Catalog/
Publication
Number

1786-TPIP67 IP67 Tap Body (not sold separately) 1

1786-TPSDT2B TNC to Straight BNC Drop Cable

1786-TPRDT2T TNC to Right-angle TNC Drop Cable

1786-TPSDT2T TNC to Straight TNC Drop Cable

1786-TNCL10 TNC Plugs (bagged) 2

1799-BRKD DIN Rail Mounting Bracket 1

1786-IN017B-EN-P ControlNet IP67 Tap and Cable Assembly Kit Installation Instructions 1

Important User Information

Solid state equipment has operational characteristics differing from those of electromechanical equipment.
Safety Guidelines for the Application, Installation and Maintenance of Solid State Controls (Publication
SGI-1.1 available from your local Rockwell Automation sales office or online at
http://www.ab.com/manuals/gi) describes some important differences between solid state equipment and
hard-wired electromechanical devices. Because of this difference, and also because of the wide variety of
uses for solid state equipment, all persons responsible for applying this equipment must satisfy themselves
that each intended application of this equipment is acceptable.

In no event will Rockwell Automation, Inc. be responsible or liable for indirect or consequential damages
resulting from the use or application of this equipment.

The examples and diagrams in this manual are included solely for illustrative purposes. Because of the many
variables and requirements associated with any particular installation, Rockwell Automation, Inc. cannot
assume responsibility or liability for actual use based on the examples and diagrams.

No patent liability is assumed by Rockwell Automation, Inc. with respect to use of information, circuits,
equipment, or software described in this manual.

Reproduction of the contents of this manual, in whole or in part, without written permission of Rockwell
Automation, Inc. is prohibited.

Throughout this manual we use notes to make you aware of safety considerations.

Description Qty.

One of the following 1-meter drop cables, depending on the version of
the kit you order (not sold separately):

DIN Rail Mounting Screws, #4-40 x .375
Pan Head, Cross Recess, Stainless Steel

Gray dust cap (for the drop cable) 1

1

2

Publication 1786-IN017B-EN-P - May 2004

4 ControlNet IP67 Tap and Cable Assembly Kit Installation Instructions

Important User Information

WARNING

Identifies information about practices or circumstances that can cause an explosion in a
hazardous environment, which may lead to personal injury or death, property damage,
or economic loss.

IMPORTANT

ATTENTION

SHOCK HAZARD

BURN HAZARD

Identifies information that is critical for successful application and understanding of the
product.

Identifies information about practices or circumstances that can lead to personal injury
or death, property damage, or economic loss. Attentions help you:

• identify a hazard

• avoid a hazard

• recognize the consequence

Labels may be located on or inside the equipment to alert people that dangerous
voltage may be present.

Labels may be located on or inside the equipment to alert people that surfaces may be
dangerous temperatures.

Publication 1786-IN017B-EN-P - May 2004

ControlNet IP67 Tap and Cable Assembly Kit Installation Instructions 5

Why Use Sealed Media Components?

Sealed media components are ControlNet taps and TNC connectors, rated to IP67, that are
suitable for use in harsh environments. IP67 is an industry-standard protection rating that
describes the degree of protection provided to the components within the IP67-rated device.
The IP67 rating means that the components are dust- and water-tight and water-immersible.
While the tap bodies and TNC connectors in all three versions of the kit are water-tight, the
BNC connector in the 1786-TCT2BD1 kit is not. Use the BNC version of the kit
(1786-TCT2BD1) in applications in which you can mount the BNC connector inside a
cabinet, or in another non-harsh environment. The sealed tap body contained in all versions
of the kit can be mounted in any environment requiring an IP67 rating.

ATTENTION

Be sure to mate or terminate all connections. The taps and drop
cables are rated to IP67 only when properly mated. Unterminated
connections could be a source of contamination. Use the gray dust
caps supplied in this kit to terminate unused connections. Never
install extra taps in IP67 environments because there is no way to seal
and protect the tap connections.

The IP67 rating is guaranteed only when you use Rockwell
Automation-supplied connectors and heat-shrink tubing.

Publication 1786-IN017B-EN-P - May 2004