Installation Instructions
ControlNet Ex Coax Taps
Catalog Number 1797-TPR, 1797 -TPS, 1797-TPYR, 1797 -TPYS
Topic
Page
Important User Information
2
Parts List
3
Additional Parts (Not Included)
4
Install the Coax Tap
4
Mount to DIN Rail
6
Mount to Surface or Fixture
8
Mount Through Holes in Tap
8
Connect Taps
9
Specifications
11
Additional Resources
11
About This Publication
This publication contains procedures and specifications for the installation of
ControlNet coaxial taps.
Publication 1797-5.18 - July 2006
2
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://literature.rockwellautomation.com) 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
IMPORTANT
ATTENTION
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.
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 to identify a hazard,
avoid a hazard, and recognize the consequences.
SHOCK HAZARD
Labels may be located on or inside the equipment, for example, a drive or motor, to
alert people that dangerous voltage may be present.
BURN HAZARD
Labels may be located on or inside the equipment, for example, a drive or motor, to
alert people that surfaces may be dangerous temperatures.
Publication 1797-5.18 - July 2006
3
Environments and Enclosures
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 meters (1.24 miles) without
derating.
Besides this publication, see:
Industrial Automation Wiring and Grounding Guidelines, Allen-Bradley
publication 1770-4.1.
NEMA Standards publication 250 and IEC publication 60529, as applicable, for
explanations of the degrees of protection provided by different types of
enclosure.
Publication 1797-5.18 - July 2006
4
Parts List
Before you discard the tap kit packaging, verify that you have all of the parts.
The following parts are included in each ControlNet Coaxial Tap Kit.
Tap Body
Transition Plate
Ex Insulator Kit
Removable Dust Cap
BNC Connector Kits
Self-Taping Screws
Threaded Screws
31641
Universal Mounting Bracket
Your ControlNet Coax Tap Kit should contain all of these parts.
– One tap (1786-TPR, 1786-TPS, 1786-TPYR, or 1786-TPYS)
– One universal mounting bracket
– One transition plate
– Two BNC connector kits
– Two self-taping screws
– Two threaded screws
– One Ex insulator kit containing instrinsically safe sheaths and dust caps
IMPORTANT
Use of the light-blue intrinsically safe sheaths and dust caps
included in the Ex insulator kit is required for instrinsically-safe
system certification by certification agencies.
If you are missing any part, contact your Rockwell Automation Sales
Representative.
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. The list below describes additional
parts that may be required for your tap installation.
• DIN rail, 35 x 7.5 mm (EN50022 - 35 x 7.5)
• DIN rail, 35 x 15 mm (EN 50022 - 35 x 15)
• screws of various lengths
• tie wrap
Publication 1797-5.18 - July 2006
5
Before You Begin
Consider the following information before you begin installing the ControlNet coax
tap.
• Choose a tap mount location that is convenient for cable routing.
• Route all cables according to intrinsically-safe cable-routing specifications.
• Use the 1797-EXMK Cable Marking kit to clearly mark intrinsically-safe drop
and trunk cables.
• Do not mount the tap in a location that requires the drop cable to lay over
ac power terminals or nearby modules.
Required Tools
You will need a small 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. You may choose to install the coax tap by using the following mount
types.
• Mount to DIN rail vertically or horizontally.
• Mount to fixture or surface.
• Mount through holes in tap by using a tie wrap or screws.
IMPORTANT
Use the light-blue intrinsically safe sheaths and dust caps provided
to cover any exposed metal parts once installation is complete.
Use of the sheaths and caps is required for instrinsically-safe
system certification by local agencies.
Publication 1797-5.18 - July 2006
6
Mount to DIN Rail
Use the following procedure to mount a Y-tap or T-tap to a DIN rail.
1. If you need to mount the tap horizontally on the DIN rail, align the holes of
the transition plate and tap body.
If you choose to mount the tap vertically, proceed to step three.
T-tap Assembly, with Transition Plate
Universal Mounting Bracket
T-tap
Transition Plate
Threaded Screws
31642
Self-taping Screws
Do not over-tighten screws as tap body damage may result. Applied screw
torque should not exceed 0.2...0.4 Nm (1...2 lb-ft).
IMPORTANT
2. Insert the threaded screws into holes of the transition plate and tighten.
3. Position the universal mounting bracket against the back of the tap or the
transition plate so the screw holes are aligned.
Y-tap to Mount Assembly
T-tap to Mount Assembly
Transition plate not used.
Threaded Screws
Transition plate not used.
Y-tap
Threaded Screws
Universal
Mounting
Bracket
T-tap
Universal Mounting Bracket
Publication 1797-5.18 - July 2006
20084
20080
7
4. 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.
If you mount the tap without using the transition plate, insert the threaded
screws into the holes of the universal mounting bracket and tighten.
The tap is now ready to be mounted on a DIN rail.
5. Attach the tap to the DIN rail by snapping the universal mounting bracket
onto the DIN rail.
T-tap, Vertical Mount
T-tap, Horizontal Mount
Transition plate not used.
Universal Mounting Bracket
Transition plate used.
Universal Mounting Bracket
Transition Plate
T-tap, Vertical
T-tap, Horizontal
DIN Rail
20081
DIN Rail
31643
Publication 1797-5.18 - July 2006
8
Mount to Surface or Fixture
Mount the tap to a surface or fixture by completing steps one through four in
Mount to DIN Rail as well as steps one and two below.
IMPORTANT
The surface or fixture used for mounting can be conductive or
grounded. Electrical isolation is provided by the body holes in the
tap.
1. If needed, pre-drill holes into the surface that align with holes in the outer
corners of the universal mounting bracket.
2. Place the universal mounting bracket against the surface and insert four
screws (not included) into the holes of the universal mounting bracket.
Universal Mounting Bracket
Surface or Fixture
20082
Mount Through Holes in Tap
To mount the tap 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.
IMPORTANT
Do not over-tighten screws as tap body damage may result. Applied screw
torque should not exceed 0.2...0.4 Nm (1...2 lb-ft).
Publication 1797-5.18 - July 2006
9
• Insert two #8 or smaller screws with washers (not included) through the
holes and tighten into the surface behind the tap.
Tie Wrap Through Holes
Screws Through Holes
Screws and
Washers
Tie Wrap
20083
20083
Connect 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.
IMPORTANT
When connecting taps with 1786-BNCP barrel connectors, use an
intrinsically-safe sheath or 500V insulation-rated tape to cover the
metal connector. Use of the intrinsically-safe sheath or insulated
tape is required for intrinsically safe certification.
Connect Taps with a Jumper
You can connect Y-tap and T-tap bodies with a plug-to-plug jumper (1786-TJPR,
not included).
T-tap Jumper Connections
Jumper
31666
Publication 1797-5.18 - July 2006
10
Connect Taps with Trunk Cable
You can increase the distance between Y-taps and T-taps by using sections of trunk
cable between taps. Connecting taps by this method requires use of the BNC
connectors (included) and cable (not included) with the tap kit.
Connect Taps with Barrel Connectors
You can connect T-taps installed on one DIN rail with barrel (plug-to-plug)
connectors. T-taps connected using barrel connectors (1786-BNCP) requires that
taps be mounted using the transition plate and on one DIN rail.
T-tap Barrel Connections
Barrel
Connector
IMPORTANT
Barrel
Connector
Barrel
Connector
31644
Do not use barrel connectors to connect taps on separate DIN rails. Barrel
connectors should be used only if taps are securely mounted. Insecure
mounts or use of barrel connectors between multiple DIN rails may result in
loose connections and tap failure.
Publication 1797-5.18 - July 2006
11
Specifications
Environmental Specifications
Attribute
Value
Intrinsically Safe
Yes
Relative Humidity
IEC 60068-2-30 (Test Db, Unpackaged Damp Heat):
5...95% noncondensing
Shock, Nonoperating
IEC 60068-2-27 (Test Ea, Unpackaged Shock):
50 g
Shock, Operating
IEC 60068-2-27 (Test Ea, Unpackaged Shock):
30 g
Temperature, Operating
IEC 60068-2-1(Test Ad, Operating Cold)
IEC 60068-2-2 (Test Ad, Operating Dry Heat)
IEC 60068-2-14 (Test Nb, Operating Thermal Shock):
-20...70 ° C (-4...158 ° F)
Temperature, Storage
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)
Vibration, Operating
IEC 60068-2-6 (Test Fc, Operating):
2.5 g @ 10...500 Hz
Additional Resources
For Information About
See Publication Title
See Publication Number
ControlNet Ex components, plans, and
installation instructions
ControlNet Ex Coax Media System
1797-6.2.1
You can view or download publications at
http://literature.rockwellautomation.com. To order paper copies of technical
documentation, contact your local Rockwell Automation distributor or sales
representative.
Allen-Bradley and ControlLogix are trademarks of Rockwell Automation, Inc.
Trademarks not belonging to Rockwell Automation are property of their respective companies.
Publication 1797-5.18 - July 2006
Rockwell Automation Support
Rockwell Automation provides technical information on the Web to assist you in
using its products. At http://support.rockwellautomation.com, 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://support.rockwellautomation.com.
Installation Assistance
If you experience a problem with a hardware module 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
module up and running.
United States
1.440.646.3223
Monday – Friday, 8am – 5pm EST
Outside United
States
Please contact your local Rockwell Automation representative for any
technical support issues.
New Product Satisfaction Return
Rockwell 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, it may need to be returned.
United States
Contact your distributor. You must provide a Customer Support case number
(see phone number above to obtain one) to your distributor in order to
complete the return process.
Outside United
States
Please contact your local Rockwell Automation representative for return
procedure.
Publication 1797-5.18 - July 2006
Supersedes Publication 1797-5.18 - February 1999
PN 953030-02
Copyright © 2006 Rockwell Automation, Inc. All rights reserved. Printed in the U.S.A.
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