Rockwell Automation 1786-RPCD User Manual

Installation Instructions

ControlNet Dual Copper Repeater Module

Catalog Number 1786-RPCD

This document describes how to install and apply the 1786-RPCD dual copper repeater
module.

Topi c : Page:

European Hazardous Location Approval 4

North American Hazardous Location Approval 6

About the Dual Copper Repeater Module 7

Mount the Repeater Module 9

Use Trunk Line Terminators 12

Remove the Repeater Module from the DIN Rail 13

Connect the Repeater Module 13

Understand Common Topologies 15

Understand Constraints of the Coax Segment 17

Status Indicators 19

Mounting Dimensions 20

Specifications 20

Publication 1786-IN001B-EN-P - May 2004

2 ControlNet Dual Copper Repeater Module

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.

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-IN001B-EN-P - May 2004

ControlNet Dual Copper Repeater Module 3

ATTENTION

Environment and Enclosure

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 without derating.

This equipment is considered Group 1, Class A industrial equipment
according to IEC/CISPR Publication 11. Without appropriate
precautions, there may be potential difficulties ensuring electromagnetic
compatibility in other environments due to conducted as well as radiated
disturbance.

This equipment is supplied as “open type” equipment. It must be
mounted within an enclosure that is suitably designed for those specific
environmental conditions that will be present and appropriately designed
to prevent personal injury resulting from accessibility to live parts. The
interior of the enclosure must be accessible only by the use of a tool.
Subsequent sections of this publication may contain additional
information regarding specific enclosure type ratings that are required to
comply with certain product safety certifications.

NOTE: See NEMA Standards publication 250 and IEC publication
60529, as applicable, for explanations of the degrees of protection
provided by different types of enclosure. Also, see the appropriate
sections in this publication, as well as the Allen-Bradley publication
1770-4.1 (“Industrial Automation Wiring and Grounding Guidelines”),
for additional installation requirements pertaining to this equipment.

ControlNet is a trademark of ControlNet International, Inc.

Publication 1786-IN001B-EN-P - May 2004

4 ControlNet Dual Copper Repeater Module

ATTENTION

ATTENTION

Preventing Electrostatic Discharge

This equipment is sensitive to electrostatic discharge, which can cause
internal damage and affect normal operation. Follow these guidelines
when you handle this equipment:

• Touch a grounded object to discharge potential static.

• Wear an approved grounding wriststrap.

• Do not touch connectors or pins on component boards.

• Do not touch circuit components inside the equipment.

• If available, use a static-safe workstation.

• When not in use, store the equipment in appropriate static-safe

packaging.

This product is grounded through the DIN rail to chassis ground. Use
zinc plated yellow-chromate steel DIN rail to assure proper grounding.
The use of other DIN rail materials (e.g., aluminum, plastic, etc.) that can
corrode, oxidize, or are poor conductors, can result in improper or
intermittent grounding.

European Hazardous Location Approval

If you install the module in a European Zone 2 location, consider:

ATTENTION

Publication 1786-IN001B-EN-P - May 2004

European Zone 2 Certification (The following applies when the
product bears the EEx Marking)

This equipment is intended for use in potentially explosive atmospheres
as defined by European Union Directive 94/9/EC.

The LCIE (Laboratoire Central des Industries Electriques) certifies that
this equipment has been found to comply with the Essential Health and
Safety Requirements relating to the design and construction of Category 3
equipment intended for use in potentially explosive atmospheres, given in
Annex II to this Directive. The examination and test results are recorded
in confidential report No. 28 682 010.

Compliance with the Essential Health and Safety Requirements has been
assured by compliance with EN 50021.

ControlNet Dual Copper Repeater Module 5

IMPORTANT

This equipment is not resistant to sunlight or other sources of UV
radiation.

The secondary of a current transformer shall not be open-circuited when
applied in Class I, Zone 2 environments.

Equipment of lesser Enclosure Type Rating must be installed in an
enclosure providing at least IP54 protection when applied in Class I, Zone
2 environments.

This equipment shall be used within its specified ratings defined by
Allen-Bradley.

Provision shall be made to prevent the rated voltage from being exceeded
by transient disturbances of more than 40% when applied in Class I, Zone
2 environments.

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6 ControlNet Dual Copper Repeater Module

North American Hazardous Location Approval

The following information applies when
operating this equipment in hazardous
locations:

Products marked “CL I, DIV 2, GP A, B, C, D” are
suitable for use in Class I Division 2 Groups A, B, C, D,
Hazardous Locations and nonhazardous locations only.
Each product is supplied with markings on the rating
nameplate indicating the hazardous location
temperature code. When combining products within a
system, the most adverse temperature code (lowest
“T” number) may be used to help determine the
overall temperature code of the system. Combinations
of equipment in your system are subject to
investigation by the local Authority Having
Jurisdiction at the time of installation.

WARNING

EXPLOSION HAZARD

• Do not disconnect equipment

unless power has been
removed or the area is known
to be nonhazardous.

• Do not disconnect

connections to this
equipment unless power has
been removed or the area is
known to be nonhazardous.
Secure any external
connections that mate to this
equipment by using screws,
sliding latches, threaded
connectors, or other means
provided with this product.

• Substitution of components

may impair suitability for
Class I, Division 2.

• If this product contains

batteries, they must be
changed only in an area
known to be nonhazardous.

Informations sur l’utilisation de cet équipement en
environnements dangereux:

Les produits marqués "CL I, DIV 2, GP A, B, C, D" ne
conviennent qu’à une utilisation en environnements de
Classe I Division 2 Groupes A, B, C, D dangereux et non
dangereux. Chaque produit est livré avec des marquages
sur sa plaque d’identification qui indiquent le code de
température pour les environnements dangereux.
Lorsque plusieurs produits sont combinés dans un
système, le code de température le plus défavorable
(code de température le plus faible) peut être utilisé pour
déterminer le code de température global du système.
Les combinaisons d’équipements dans le système sont
sujettes à inspection par les autorités locales qualifiées
au moment de l’installation.

AVERTISSEMENT

RISQUE D’EXPLOSION

• Couper le courant ou

s’assurer que
l’environnement est
classé non dangereux
avant de débrancher
l'équipement.

• Couper le courant ou

s'assurer que
l’environnement est
classé non dangereux
avant de débrancher les
connecteurs. Fixer tous
les connecteurs externes
reliés à cet équipement à
l'aide de vis, loquets
coulissants, connecteurs
filetés ou autres moyens
fournis avec ce produit.

• La substitution de

composants peut rendre
cet équipement inadapté
à une utilisation en
environnement de Classe
I, Division 2.

• S’assurer que

l’environnement est
classé non dangereux
avant de changer les
piles.

Publication 1786-IN001B-EN-P - May 2004

ControlNet Dual Copper Repeater Module 7

WARNING

WARNING

About the Dual Copper Repeater Module

Use this copper repeater module when the:

• design of the network requires a hub-based topology

• segment requires a greater copper distance

• design requires an isolated segment

• number of nodes requires the use of repeaters (refer to Understand Constraints of the

Coax Segment on page 1-17)

If you insert or remove the module while backplane power is
on, an electrical arc can occur. This could cause an explosion
in hazardous location installations.If you insert or remove the
module while backplane power is on, an electrical arc can oc
cur. This could cause an explosion in hazardous location instal­lations.
Be sure that power is removed or the area is nonhazardous be­fore proceeding.

If you connect or disconnect the communications cable with
power applied to this module or any device on the network, an
electrical arc can occur. This could cause an explosion in haz
ardous location installations.

-

-

The copper repeater module allows multiple 1000m copper segments to be attached to a
repeater adapter (1786-RPA). See pages15-18 for topology examples and segment length
constraints.

The module provides two copper channels and activity status indicators for each channel.

Publication 1786-IN001B-EN-P - May 2004

8 ControlNet Dual Copper Repeater Module

The figure below identifies the components of the module:

The left side of the
module (not shown
here) also contains a
backplane connector.

Indicators

Right-side backplane
connector with
protective cover

Channel 1
coax port

Module
locking tab

Channel 2
coax port

Publication 1786-IN001B-EN-P - May 2004

75 Ω BNC Trunk line terminators
(1786-XT)

Important:You must terminate
unused channels to maintain the
integrity of your network.

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