Rockwell Automation 1786-RPAB User Manual

Installation Instructions

ControlNet Modular Repeater Adapter

Catalog Number 1786-RPA/B

Topic Page

Important User Information 2
Environment and Enclosure 3
North American Hazardous Location Approval 4
European Hazardous Location Approval 5
Features and Components of the ControlNet Repeater Adapter 6
Mount the Repeater Adapter Module 8
Wire the Repeater Adapter Module 13
Status Indicators 16
Specifications 19
Additional Resources 23

About the Repeater Adapter Module

The 1786-RPA/B ControlNet repeater adapter module, which has a 24V DC,
removable power supply, can be used with 1786 repeater modules to build a
ControlNet network repeater. A repeater is used to extend the length of a
network, create a star, ring, or point-to-point topology, or perform network
media conversion from copper to fiber, and vice versa. A maximum of 20
repeater adapter can be placed in a series.

2 ControlNet Modular Repeater Adapter

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

http://www.rockwellautomation.com/literature/

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.

available from your local Rockwell Automation sales office or online at

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.

) describes some important differences between

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-IN013F-EN-P - April 2011

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 60664-1), at altitudes up to 2000 m
(6562 ft) without derating.

This equipment is considered Group 1, Class A industrial equipment
according to IEC/CISPR 11. Without appropriate precautions, there
may be difficulties with electromagnetic compatibility in residential
and other environments due to conducted and radiated disturbances.

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 enclosure must have suitable
flame-retardant properties to prevent or minimize the spread of flame,
complying with a flame spread rating of 5VA, V2, V1, V0 (or
equivalent) if non-metallic. 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.

In addition to this publication, see the following:

• Industrial Automation Wiring and Grounding Guidelines,

publication 1770-4.1

• NEMA Standard 250 and IEC 60529, as applicable, for explanations

of the degrees of protection provided by enclosures

, for additional installation requirements

ControlNet Modular Repeater Adapter 3

Rockwell Automation Publication 1786-IN013F-EN-P - April 2011

4 ControlNet Modular Repeater Adapter

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 only be changed 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.

Rockwell Automation Publication 1786-IN013F-EN-P - April 2011

ControlNet Modular Repeater Adapter 5

European Hazardous Location Approval

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

This equipment is intended for use in potentially explosive atmospheres as defined by
European Union Directive 94/9/EC and 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 Zone 2 potentially explosive atmospheres, given in Annex II to this
Directive. Compliance with the Essential Health and Safety Requirements has been assured
by compliance with EN 60079-15 and EN 60079-0.

WARNING: You must follow these guidelines:

• This equipment must be installed in an enclosure providing at least
IP54 protection when applied in Zone 2 environments.

• This equipment shall be used within its specified ratings defined by
Rockwell Automation.

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

• Secure any external connections that mate to this equipment by
using screws, sliding latches, threaded connectors, or other means
provided with this product.

• Do not disconnect equipment unless power has been removed or
the area is known to be nonhazardous.

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

Rockwell Automation Publication 1786-IN013F-EN-P - April 2011

6 ControlNet Modular Repeater Adapter

TIP

Prevent Electrostatic Discharge

ATTENTION: 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.

• Use a static-safe workstation, if available.

• Store the equipment in appropriate static-safe packaging when not

in use.

Features and Components of the ControlNet Repeater Adapter

A 1786-RPA/B repeater adapter can be used with the following modules to
build a ControlNet network repeater:

• 1786-RPCD repeater dual copper module

• 1786-RPFS repeater short-distance fiber module

• 1786-RPFM repeater medium-distance fiber module

• 1786-RPFRL fiber ring repeater module

• 1786-RPFRXL fiber ring repeater module

If the 1786-RPA/B repeater adapter is used with the 1786-RPCD,
1786-RPFS, and 1786-RPFM repeater modules, you can attach as
many as four repeaters to the repeater adapter.

If the 1786-RPA/B repeater adapter is used with the 1786-RPFRL
and 1786-RPFRXL repeater modules, you can attach as many as
two repeaters to the repeater adapter.

See page 11 for more details.

ATTENTION: If this equipment is used in a manner not specified
by the manufacturer, the protection provided by the equipment may
be impaired.

Rockwell Automation Publication 1786-IN013F-EN-P - April 2011

ControlNet Modular Repeater Adapter 7

COM

COM

REPEATER

ADAPTER

REPEATER

MODULES

24V

+

+

75 Ω Terminator

Status
Indicators

31453-M

Removable
Terminal
B lock
(RTB)

The repeater adapter also provides the following:

• Digital re-timing of ControlNet network data

• Power to repeater modules

• One coax channel

• Status indicators

The repeater adapter ships with the following items:

• One removable terminal block (power connector) attached to the
repeater adapter.

• One 75

Ω terminator for terminating an unused port.

• Two D IN ra il lo ck s

The illustration shows the components that comprise the 1786-RPA/B repeater
adapter module.

Rockwell Automation Publication 1786-IN013F-EN-P - April 2011

8 ControlNet Modular Repeater Adapter

TIP

Dimensions are in mm (in.).

31458-M

102.1

(4.084)

100
(4.0)

69

(2.76)

90

(3.6)

127

(5)

Mount the Repeater Adapter Module

This section explains how to mount the 1786-RPA/B repeater adapter module.

Horizontal mounting is preferred. Vertical mounting is allowed.
We recommend that the 1786-RPA/B module be mounted at the
top if vertical mounting is chosen.

ATTENTION: 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 (for
example, aluminum or plastic) that can corrode, oxidize, or are poor
conductors, can result in improper or intermittent grounding.
Secure DIN rail to mounting surface approximately every 200 mm
(7.8 in.) and use end-anchors appropriately.

Figure 1 - Mounting Dimensions

Rockwell Automation Publication 1786-IN013F-EN-P - April 2011