Rockwell Automation Allen-Bradley ControlNet Ex Media Technical manual

ControlNet Ex
Media
1797-series
Planning and Installation
Manual

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, 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.
IMPORTANT Identifies information that is critical for successful
application and understanding of the product.
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
•recognize the consequence
SHOCK HAZARD Labels may be located on or inside the equipment (e.g.,
drive or motor) to alert people that dangerous voltage may
be present.
BURN HAZARD Labels may be located on or inside the equipment (e.g.,
drive or motor) to alert people that surfaces may be
dangerous temperatures.

iPublication CNET-IN003A-EN-P - January 2006
Table of Contents
Preface What’s in This Chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Abbreviations and Symbols . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Common Techniques . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
For More Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Chapter 1
Overview of the ControlNet Ex
Media System
What This Chapter Contains . . . . . . . . . . . . . . . . . . . . . . . 1-1
Understand the ControlNet Ex Media System . . . . . . . . . . . 1-2
Understand ControlNet Ex Components . . . . . . . . . . . . . . . 1-4
Nodes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Taps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Trunk Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
Cable Connectors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
Trunk Terminator. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
Tap Terminator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
Segments. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
Fiber Repeater Hubs . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
Insulators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
ControlNet Ex System Installation Requirements . . . . . . . . . 1-9
Certified Equivalent ControlNet Ex System Components 1-10
UL, cUL I/O Entity Parameters and Requirements . . . . . 1-11
European Community Directive Compliance . . . . . . . . . 1-12
EMC Directive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12
Ex Directive. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13
What Is Next? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13
Chapter 2
Plan a ControlNet Ex Media
System
What This Chapter Contains . . . . . . . . . . . . . . . . . . . . . . . 2-1
Determine How Many Taps You Need. . . . . . . . . . . . . . . . 2-2
Connect Programming Devices in Safe Areas . . . . . . . . . . . 2-3
Coax Cable Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
Fiber Media Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
Determine Trunk Cable Section Lengths. . . . . . . . . . . . . . . 2-4
Determine Trunk Cable Section Length When
You Use a FLEX Ex Redundant ControlNet
Barrier Module. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
Estimate Fiber Media Lengths . . . . . . . . . . . . . . . . . . . . . . 2-7
Determine How Many Trunk Terminators You Need . . . . . 2-7
Determine What Type of Connectors You Need . . . . . . . . . 2-8
Use Redundant Media in a Hazardous Area . . . . . . . . . . . . 2-10
Application Considerations . . . . . . . . . . . . . . . . . . . . . . . . 2-13
Understand Conductor Categories. . . . . . . . . . . . . . . . . 2-13
General Wiring Guidelines . . . . . . . . . . . . . . . . . . . . . . 2-14
Ferrite Beads. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-15
Required Ferrite Beads. . . . . . . . . . . . . . . . . . . . . . . . . 2-15
Add Ferrite Beads . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-16

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Table of Contents ii
Order Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-17
General Planning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-17
Plan a Segment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-17
Plan Your Network . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-18
Order Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-18
What Is Next? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-20
Chapter 3
Install a ControlNet Ex Media
System
What This Chapter Contains . . . . . . . . . . . . . . . . . . . . . . . 3-1
Install the Trunk Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Wire External to Enclosures . . . . . . . . . . . . . . . . . . . . . 3-1
Wire Inside Enclosures. . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Mount the Taps. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Select Where to Mount the Taps. . . . . . . . . . . . . . . . . . 3-2
Mount the Taps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
Install Fiber Hubs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
Installation in Zone 1 . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
Electrostatic Charge . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
Select a Fiber Repeater Hub Mounting Location . . . . . . 3-8
Mount the Fiber Repeater Hub . . . . . . . . . . . . . . . . . . . 3-9
Connect the Fiber Repeater Hub to a ControlNet
Ex Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11
Install Cable Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13
Collect Your Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13
Strip the Cable. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-14
Test for Electrical Shorts and Continuity Between the
Center Conductor and the Shield . . . . . . . . . . . . . . . . . 3-19
Attach the Connectors to the Cable. . . . . . . . . . . . . . . . 3-20
Test for Electrical Shorts and Continuity Between the
Connector Body and Pin . . . . . . . . . . . . . . . . . . . . . . . 3-24
Connect Cable Sections . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-25
Terminate Segments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-25
Connect Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-27
Install the 1797-BCNR Module . . . . . . . . . . . . . . . . . . . . . . 3-28
Appendix A
Mounting Dimensions
What This Appendix Contains . . . . . . . . . . . . . . . . . . . . . . A-1
Tap Placement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1
Universal Mounting Bracket. . . . . . . . . . . . . . . . . . . . . . . . A-2

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Table of Contents iii
Appendix B
Adjust the Cable Strip Tool
What This Appendix Contains . . . . . . . . . . . . . . . . . . . . . . B-1
Calibrate the Cutting Blades. . . . . . . . . . . . . . . . . . . . . . . . B-1
Reverse and Replace the Cutting Blades. . . . . . . . . . . . . . . B-3
Change the Memory Blade Holder . . . . . . . . . . . . . . . . . . . B-5
Appendix C
Protect Your System Against
Electrostatic Discharge
Index

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Table of Contents iv

1Publication CNET-IN003A-EN-P - January 2006
Preface
What’s in This Chapter
Use this manual to plan and install a ControlNet Ex media system.
This manual describes the required components of an intrinsically-safe
cable system and how to plan for and install these required
components.
This manual targets the configurion of a ControlNet Ex system.
However, since a ControlNet Ex system and a ControlNet system can
be linked, it may be necessary to introduce and refer to concepts on
the ControlNet side of the network.
Some configurations on a standard ControlNet system may not be
possible within a ControlNet Ex configuration. Many of the installation
methods and equipment for the ControlNet Ex system is the same as
those available for the ControlNet system. However, some differences
do exist. As you use this manual, note these differences.
The following tables describe where specific information is found in
this manual.
For See Chapter
Help understanding the ControlNet Ex Media System 1
Help planning a ControlNet Ex Media System 2
Installation of a ControlNet Ex Media System 3
For See Appendix
Mounting dimensions (taps, universal mounting
bracket, and repeater)
A
Adjusting the cable strip tool B
Protecting your system against electrostatic discharge C
ATTENTION You must have fundamental knowledge about
electronics and electrical codes to interpret and
apply the concepts in this manual.

Publication CNET-IN003A-EN-P - January 2006
Preface 2
Abbreviations and Symbols
The following table explains abbreviations and symbols we use in this
manual.
Common Techniques
We use the following conventions throughout this manual:
•bulleted lists indicate information, not procedural steps
•numbered lists indicate sequential step
For More Information
For more information, refer to the following:
•Electronic Data Sheets:
http://www.ab.com/networks/eds/index.html
•RSNetWorx and RSLinx Software Demos and Tutorials
This Means
PVC cable polyvinyl chloride cable
FEP cable fluorinated ethylene propylene cable
PLC processor Allen-Bradley programmable logic controller
network continues (other nodes not shown)
TIP This symbol identifies helpful tips.

1Publication CNET-IN003A-EN-P - January 2006
Chapter 1
Overview of the ControlNet Ex Media System
What This Chapter Contains
Use this chapter to familiarize yourself with the ControlNet Ex media
system. The following table describes what this chapter contains and
where to find specific information.
This system is an intrinsically-safe system specifically designed for use
in hazardous areas.
For Information On See Page
Understand the ControlNet Ex Media System 1-2
Understand ControlNet Ex Components 1-4
ControlNet Ex System Installation Requirements 1-9
TIP For information on installation requirements for
hazardous areas, refer to NFPA 70 (National Electrical
Code NEC), Article 500.
TIP This publication describes how to plan and install a
ControlNet Ex media system in a hazardous area.
Refer to the following publications for information
on how to plan and install a coax and fiber media
system in a non-hazardous environment:
•CNET-IN002, ControlNet Coax Media Planning
and Installation Manual
•CNET-IN001, ControlNet Fiber Media Planning
and Installation Manual
ATTENTION The ControlNet Ex media system cannot be used in a
safe environment after it has been exposed to signals
from a hazardous area.

Publication CNET-IN003A-EN-P - January 2006
1-2 Overview of the ControlNet Ex Media System
Understand the ControlNet
Ex Media System
The ControlNet Ex media system gives you the flexibility to design a
communication network for your particular application. To take full
advantage of this flexibility, spend sufficient time when you plan how
to install your network before you assemble any of the hardware.
For information on installing ControlNet media in a hazardous area,
refer to the ControlNet Coax Media Planning and Installation Manual,
publication CNET-IN002.
Use the following figures and term definitions to understand the
ControlNet Ex media system
Figure 1.1 ControlNet Coax to Fiber system for FLEX Ex
Term Means
Network •A collection of connected nodes
•A collection of nodes with unique addresses in the range of 1-99
•The connection paths between any pair of devices may include repeaters and bridges.
Segment •Trunk cable sections connected via taps with terminators at each end and with no
repeaters.
Trunk Cable •The bus or central part of a media system
Trunk Cable Section •A length of a cable between any two taps
Fiber Repeater Hub •Consists of a fiber repeater and fiber adapter
•The components reconstruct and retransmit all traffic on one fiber or coax segment
side to another coax or fiber segment side.
Tap •The connection between any device and the ControlNet Ex or ControlNet media
system
41326
Network
Coax Segment Coax Segment
Safe Area Hazardous Area
Trunk Cable
TT TTTTTTT
NN
NNN
N
HHN
Fiber Segment
Trunk Cable
Coax (1786) Fiber Hubs Ex (1797) Fiber Hubs
H
T