Installation Instructions
ControlNet Coax Taps
Catalog Numbers 1786-TPR, 1786-TPS, 1786-TPYR, 1786-TPYS
Topic
Page
About This Publication
1
About T-taps and Y-taps
3
Parts (included)
4
Additional Parts (not included)
5
Required Tools
6
Install the Coax Tap
6
Connect the Taps
12
Specifications
14
Additional Resources
15
About This Publication
This publication contains procedures and specifications for the installation of
ControlNet coaxial taps.
2 ControlNet Coax Taps
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.rockwellautomation.com/literature/) 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, when necessary, we use notes to make you aware of safety considerations.
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.
ATTENTION: 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 and recognize the consequences.
SHOCK HAZARD: Labels may be on or inside the equipment, for example, drive or
motor, to alert people that dangerous voltage may be present.
BURN HAZARD: Labels may be on or inside the equipment, for example, drive or
motor, to alert people that surfaces may reach dangerous temperatures.
IMPORTANT
Identifies information that is critical for successful application and understanding
of the product.
Rockwell Automation Publication 1786-IN007C-EN-P - October 2010
ControlNet Coax Taps 3
Environment and Enclosure
ATTENTION: This equipment is intended for use in a Pollution
Degree 2 industrial environment, in overvoltage Category II
applications (as defined in IEC publication 60664-1), at altitudes up
to 2000 m (1.24 mi) without derating.
Besides this publication, see:
• Industrial Automation Wiring and Grounding Guidelines, Rockwell
Automation publication 1770-4.1.
• NEMA Standard 250 and IEC 60529, as applicable, for
explanations of the degrees of protection provided by different
types of enclosures.
About T-taps and Y-taps
The ControlNet taps are available in two body types to accommodate the
connections that you need to make for your installation.
T-tap
Y-tap
For examples of how these two tap bodies can be connected, refer to Connect
the Taps on page 12.
Rockwell Automation Publication 1786-IN007C-EN-P - October 2010
4 ControlNet Coax Taps
Parts (included)
Before you discard the packaging of the tap kit, verify that you have all of the
parts.
Item
Description
Tap, cat. no. 1786-TPR, 1786-TPS, 1786-TPYR, or 1786-TPYS
Channel A and channel B cable labels
Threaded screws
Self-tapping screws
BNC connector kits
Universal mounting bracket
Transition plate
Dust cap
If you are missing any part, contact your Rockwell Automation Sales
Representative.
Rockwell Automation Publication 1786-IN007C-EN-P - October 2010
ControlNet Coax Taps 5
Additional Parts (not included)
Depending on the type of tap mount and installation you choose, you may
require additional parts not included with this tap kit. This list describes
additional parts that may be required for your tap installation.
• DIN rail, 35 x 7.5 mm (1.38 x .30 in.), EN 50022-35 x 7.5
• DIN rail, 35 x 15 mm (1.38 x .59 in.), EN 50022-35 x 15
IMPORTANT
The ControlNet taps do not require the use of DIN rails made of specific
materials. However, many of other products available from Rockwell
Automation do require the use of a zinc-plated yellow-chromate steel DIN
rail to assure proper grounding. The use of other DIN rail materials (such
as aluminum or plastic) that can corrode, oxidize, or are poor conductors,
can result in improper or intermittent grounding.
For compatibility with other Rockwell Automation products, we
recommend that you use the zinc-plated yellow-chromate steel DIN rail.
• Screws of various lengths
• Tie wrap (for mounting the tap)
• 12.7 mm (0.50 in.) diameter max hook-and-loop
wire strap for securing coax cable (including tap
cable)
Rockwell Automation Publication 1786-IN007C-EN-P - October 2010
6 ControlNet Coax Taps
IMPORTANT
For securing coax cables (including the tap cable), use
hook-and-loop wire straps (not included; local purchase). We do
not recommend wire ties because excessively tightened ties may
degrade cable transmission quality.
Hook-and-loop
wire strap
Required Tools
You will need a #1 Phillips-head screwdriver for most types of installation.
Install the Coax Tap
Because the coax taps are designed to be versatile, several types of installation
are available. Choose to install the coax tap by using one of these mounting
methods:
• Mount to DIN Rail, see page 7
• Mount to Surface or Fixture, see page 10
• Mount Through Holes in Tap, see page 11
Rockwell Automation Publication 1786-IN007C-EN-P - October 2010
ControlNet Coax Taps 7
Mount to DIN Rail
Use the following procedure to mount a T-tap or Y-tap to a DIN rail.
1. Determine if your installation requires the use of the transition plate.
The transition plate should be used only when a T-tap is being installed
and the T-tap needs to be mounted horizontally.
If you are not using the transition plate, skip to step 4.
2. Begin attaching the transition plate by aligning the holes of the
transition plate and tap body.
31642
3. Insert the threaded screws into holes of the transition plate and tighten.
IMPORTANT
Do not over-tighten screws as tap body damage may result.
Applied screw torque should not exceed 0.2…0.4 N•m
(0.14…0.29 lb•ft).
Rockwell Automation Publication 1786-IN007C-EN-P - October 2010
8 ControlNet Coax Taps
4. Position the universal mounting bracket against the back of the tap or
the transition plate so the screw holes are aligned.
T-tap
T-tap Transition Plate Used
Y-tap
31642
20084
20080
5. If you mount the tap by using the transition plate, insert the self-taping
screws into the holes of the universal mounting bracket and tighten.
Rockwell Automation Publication 1786-IN007C-EN-P - October 2010
ControlNet Coax Taps 9
6. If you mount the tap without using the transition plate, insert the
threaded screws into the holes of the universal mounting bracket and
tighten.
7. Attach the tap to the DIN rail by snapping the universal mounting
bracket onto the DIN rail.
With Transition Plate
Without Transition Plate
20081
Rockwell Automation Publication 1786-IN007C-EN-P - October 2010
10 ControlNet Coax Taps
Mount to Surface or Fixture
To mount the tap to a surface or fixture, complete steps 1…5 described in the
section Mount to DIN Rail (on page 7), and then complete these steps.
1. If needed, pre-drill holes into the surface that align with holes in the
outer corners of the universal mounting bracket.
The holes of the universal mounting bracket have a diameter of 4.3 mm
(0 .17 in.).
2. Place the universal mounting bracket against the surface and insert four
screws (not included) into the holes of the universal mounting bracket.
20082
Rockwell Automation Publication 1786-IN007C-EN-P - October 2010
ControlNet Coax Taps 11
Mount Through Holes in Tap
To mount the tap by using the holes in the tap body, choose one of the following
mounting methods:
• Thread tie wrap through the holes in the tap and fasten to a fixture.
• Insert two #8 or smaller screws with washers (not included) through the
holes and tighten into the surface behind the tap
IMPORTANT
Do not over-tighten screws as tap body damage may result.
Applied screw torque should not exceed 0.2…0.4 N•m
(0.14…0.29 lb•ft).
Rockwell Automation Publication 1786-IN007C-EN-P - October 2010
12 ControlNet Coax Taps
Connect the Taps
After you have completed mounting your taps, you need to connect the taps.
Choose the tap connection procedure that best suits your installation
requirements.
Connect Taps with a Jumper
You can connect T-taps and Y-taps by using a plug-to-plug jumper (catalog no.
1786-TJPR, not included) when these considerations are made:
• No more than 70 jumpers can be used per ControlNet segment.
• Plug-to-plug jumpers cannot be bent beyond a 3.81 cm (1.5 in.) radius.
• Drop cable cannot be bent beyond a 3.81 cm (1.5 in.) radius.
3.81 cm (1.5 in.)
3.81 cm (1.5 in.)
3.81 cm (1.5 in.)
Rockwell Automation Publication 1786-IN007C-EN-P - October 2010
ControlNet Coax Taps 13
Connect Taps with Trunk Cable
You can increase the distance between T-taps or between Y-taps by using
sections of trunk cable between taps to create a segment. Connecting taps by
using this method requires BNC connectors (included) and cable (not
included) with the tap kit.
Segment
Connect Taps with Barrel Connectors
You can connect T-taps installed on one DIN rail by using barrel (plug-to-plug)
connectors. T-taps connected with barrel connectors (catalog no. 1786-BNCP)
require horizontal mounting of the taps on one DIN rail.
31879-M
IMPORTANT
Do not use barrel connectors to connect taps on separate DIN
rails.
Barrel connectors should be used only if taps are securely
mounted on (but not screwed or bolted to) the DIN rail. If you are
using barrel connectors, use the universal mounting bracket with
a transition plate. to mount the taps to the DIN rail.
Insecure mounts or use of barrel connectors between multiple
DIN rails may result in loose connections and tap failure.
Rockwell Automation Publication 1786-IN007C-EN-P - October 2010
14 ControlNet Coax Taps
Specifications
Environmental Specifications - ControlNet Taps
Attribute
1786-TPR, 1786-TPS,
1786-TPYR, 1786-TPYS
Temperature, operating
IEC 60068-2-1 (Test Ad, Operating Cold),
IEC 60068-2-2 (Test Bd, Operating Dry Heat),
IEC 60068-2-14 (Test Nb, Operating Thermal Shock)
-25…70 °C (-13…158 °F)
Temperature, nonoperating
IEC 60068-2-1 (Test Ab, Unpackaged Nonoperating
Cold),
IEC 60068-2-2 (Test Bb, Unpackaged Nonoperating Dry
Heat),
IEC 60068-2-14 (Test Na, Unpackaged Nonoperating
Thermal Shock)
-40…85 °C (-40…185 °F)
Relative humidity
IEC 60068-2-30 (Test Db, Unpackaged Damp Heat)
5…95% noncondensing
Shock, operating
IEC 60068-2-27 (Test Ea, Unpackaged Shock)
30 g
Shock, nonoperating
IEC 60068-2-27 (Test Ea, Unpackaged Shock)
50 g
Vibration
IEC 60068-2-6 (Test Fc, Operating)
2.5 g @ 10…500 Hz
Rockwell Automation Publication 1786-IN007C-EN-P - October 2010
ControlNet Coax Taps 15
Additional Resources
Resource
Description
ControlNet Coax Media Planning and
Installation Guide,
publication CNET-IN002
Describes the required components of a
ControlNet coax media system and how to plan
for and install the required components.
NetLinx Selection Guide,
publication NETS-SG001
Describes considerations for selection and
planning network components, including
ControlNet components.
ControlNet Modules in Logix5000
Control Systems User Manual,
publication CNET-UM001
Describes how to use ControlNet modules with
Logix5000 controllers.
You can view or download publications at
http://www.rockwellautomation.com/literature. To order paper copies of
technical documentation, contact your local Rockwell Automation distributor
or sales representative.
Rockwell Automation Publication 1786-IN007C-EN-P - October 2010
Rockwell Automation Support
Rockwell Automation provides technical information on the Web to assist you in using its products. At
http://www.rockwellautomation.com/support/, you can find technical manuals, a knowledge base of FAQs,
technical and application notes, sample code and links to software service packs, and a MySupport feature
that you can customize to make the best use of these tools.
For an additional level of technical phone support for installation, configuration, and troubleshooting, we
offer TechConnect support programs. For more information, contact your local distributor or Rockwell
Automation representative, or visit http://www.rockwellautomation.com/support/.
Installation Assistance
If you experience a problem within the first 24 hours of installation, please review the information that's
contained in this manual. You can also contact a special Customer Support number for initial help in getting
your product up and running.
United States or Canada
1.440.646.3434
Outside United States or
Canada
Use the Worldwide Locator at
http://www.rockwellautomation.com/support/americas/phone_en.html, or
contact your local Rockwell Automation representative.
New Product Satisfaction Return
Rockwell Automation tests all of its products to ensure that they are fully operational when shipped from
the manufacturing facility. However, if your product is not functioning and needs to be returned, follow
these procedures.
United States
Contact your distributor. You must provide a Customer Support case number
(call the phone number above to obtain one) to your distributor to complete
the return process.
Outside United States
Please contact your local Rockwell Automation representative for the return
procedure.
Documentation Feedback
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improve this document, complete this form, publication RA-DU002, available at
http://www.rockwellautomation.com/literature/.
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Publication 1786-IN007C-EN-P - October 2010
Supersedes Publication 1756-IN007B-EN-P - June 2006
PN-54519
Copyright © 2010 Rockwell Automation, Inc. All rights reserved. Printed in the U.S.A.
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