Allen-Bradley C Series User manual

Installation Instructions
Original Instructions
FLEX I/O DeviceNet Adapter Module
Catalog Numbers 1794-ADN and 1794-ADNK, Series C
Topic Page
Important User Information 2
Environment and Enclosure 3
North American Hazardous Location Approval 4
European Hazardous Location Approval 5
Electrical Safety Considerations 5
Prevent Electrostatic Discharge 7
Special Conditions for Safe Use 7
Overview 8
InstallingYour DeviceNet Adapter Module 9
Status Indicators 13
Specifications 16

2Rockwell Automation Publication 1794-IN099D-EN-P - November 2018
FLEX I/O DeviceNet Adapter 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.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 that are 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 1794-IN099D-EN-P - November 2018 3
FLEX I/O DeviceNet Adapter Module
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 EN/IEC 60664-1),
at altitudes up to 2000 m (6562 ft) without derating.
This equipment is not intended for use in residential environments and may not
provide adequate protection to radio communication services in such environments.
This equipment is supplied as open-type equipment for indoor use. 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 5V A or be approved for the
application if nonmetallic.The interior of the enclosure must be accessible only by
the use of a tool. Subsequent sections of this publication may contain more
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 AutomationWiring and Grounding Guidelines,
publication 1770-4.1, for additional installation requirements.
• NEMA Standard 250 and EN/IEC 60529, as applicable, for explanations of the
degrees of protection provided by enclosures.
ATTENTION: Read this document and the documents listed in the Additional
Resources section about installation, configuration, and operation of this
equipment before you install, configure, operate, or maintain this product. Users
are required to familiarize themselves with installation and wiring instructions in
addition to requirements of all applicable codes, laws, and standards.
Installation, adjustments, putting into service, use, assembly, disassembly, and
maintenance are required to be carried out by suitably trained personnel in
accordance with applicable code of practice. In case of malfunction or damage, no
attempts at repair should be made. The module should be returned to the
manufacturer for repair. Do not dismantle the module.

4Rockwell Automation Publication 1794-IN099D-EN-P - November 2018
FLEX I/O DeviceNet Adapter Module
North American Hazardous Location Approval
The 1794-ADN and 1794-ADNK, Series C modules are Hazardous Location approved:
The Following Information Applies When
Operating This Equipment In Hazardous Locations.
Informations sur l’utilisation de cet équipement en
environnements dangereux.
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.
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.
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.
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.
At the end of its life, this equipment should be collected separately from any
unsorted municipal waste.
ATTENTION:
• Use only a soft dry anti-static cloth to wipe down equipment. Do not use any
cleaning agents.

Rockwell Automation Publication 1794-IN099D-EN-P - November 2018 5
FLEX I/O DeviceNet Adapter Module
European Hazardous Location Approval
Electrical Safety Considerations
The following applies to products marked
• Are intended for use in potentially explosive atmospheres as defined by European Union
Directive 2014/34/EU 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.
• Are Equipment Group II, Equipment Category 3, and comply with the Essential Health and
Safety Requirements relating to the design and construction of such equipment given in
Annex II to Directive 2014/34/EU. See the EC Declaration of Conformity at
http://www.rockwellautomation.com/global/certification/overview.page for details.
• The type of protection is Ex nA IIC T4 Gc according to EN 60079-15.
• Comply to Standards EN 60079-0:2012, EN 60079-15:2010, reference certificate number
LCIE 01 ATEX 6020 X I 09; II3G Ex nA IIC T4 Gc.
• Are intended for use in areas in which explosive atmospheres caused by gases, vapors, mists,
or air are unlikely to occur, or are likely to occur only infrequently and for short periods.Such
locations correspond to Zone 2 classification according to ATEX directive 2014/34/EU.
• May have catalog numbers followed by a "K" to indicate a conformal coating option.
ATTENTION: Power to this equipment and all connected I/O must be supplied
from a source compliant with the following:
• SELV source approved to EN/IEC60950-1, EN/IEC61010-2-201
or EN/IEC62368-1 (ES1)
• PELV source approved to EN/IEC60950-1, EN/IEC61010-2-201
or EN/IEC62368-1 (ES1)
Note: A power source approved to a U.S.A. or Canadian version of the above listed
standards is required for system approval in the U.S.A. or Canada.
ATTENTION: All wiring must comply with applicable electrical installation
requirements (e.g., N.E.C. article 501-4(b)).
ATTENTION: Wire conductor and insulation ratings shall support minimum
temperature rating of 85 °C (185 °F)

6Rockwell Automation Publication 1794-IN099D-EN-P - November 2018
FLEX I/O DeviceNet Adapter Module
WARNING:
• This equipment is not resistant to sunlight or other sources of UV radiation.
• This equipment shall be mounted in an ATEX Zone 2 certified enclosure with a
minimum ingress protection rating of at least IP54 (in accordance with EN
60079-15) and used in an environment of not more than Pollution Degree 2
(as defined in EN 60664-1) when applied in Zone 2 environments. The
enclosure must be accessible only by the use of a tool.
• 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 140% of the peak rated voltage when
applied in Zone 2 environments.
• The instructions in the user manual shall be observed.
• This equipment must be used only with ATEX certified Rockwell Automation
backplanes.
• 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.
• Enclosure must be marked with the following: "Warning - Do not open when
energized." After installation of equipment into the enclosure, access to
termination compartments shall be dimensioned so that conductors can be
readily connected.
• Earthing is accomplished through mounting of modules on rail.
• Devices shall be used in an environment of not more than Pollution Degree 2.

Rockwell Automation Publication 1794-IN099D-EN-P - November 2018 7
FLEX I/O DeviceNet Adapter Module
Prevent Electrostatic Discharge
Special Conditions for Safe Use
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.
ATTENTION:
• This product is grounded through the DIN rail to chassis ground. Use zinc
plated chromate-passivated 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. Be sure to ground the DIN rail
properly. Refer to Industrial AutomationWiring and Grounding Guidelines,
publication 1770-4.1, for more information.
• Do not remove or replace a terminal base unit while power is applied.
Interruption of the backplane can result in unintentional operation or
machine motion.
• Do not remove or replace an Adapter Module while power is applied.
Interruption of the backplane can result in unintentional operation or
machine motion.
• If this equipment is used in a manner not specified by the manufacturer, the
protection provided by the equipment may be impaired.
• To reduce susceptibility to noise, power analog modules and digital modules
from separate power supplies.

8Rockwell Automation Publication 1794-IN099D-EN-P - November 2018
FLEX I/O DeviceNet Adapter Module
Overview
DeviceNet Adapter, Cat. No. 1794-ADN/C, and 1794-ADNK/C
WARNING:
• If you insert or remove themodulewhile backplane power is on, an electric arc
can occur.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 electric arc can occur. 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 wiring while the field side power is on, an
electrical arc can occur.This could cause an explosion in hazardous location
installations. Be sure that power is removed or the area is nonhazardous
before proceeding.
• When used in a Class I, Division 2, hazardous location, this equipment must be
mounted in a suitable enclosure with proper wiring method that complies
with the governing electrical codes.
• For Class I Division 2 applications, use only Class I Division 2 listed or recognized
accessories and modules approved for use within the 1794 platform.
Component Identification
1 DeviceNet Adapter Module 5 DeviceNet Node selection
thumbwheel switches
1
2
3
46
7
8
5
44976

Rockwell Automation Publication 1794-IN099D-EN-P - November 2018 9
FLEX I/O DeviceNet Adapter Module
Installing Your DeviceNet Adapter Module
Mounting on a DIN rail before installing the terminal base Units
1. Position the DeviceNet adapter module (A) on an IEC standard, (35 x
7.5 x 1 mm) top-hat DIN rail (B), at a slight angle.
2. Hook the lip on the rear of the adapter onto the top of the DIN rail, and
rotate the adapter onto the rail.
3. Press the adapter module down onto the DIN rail until flush. Locking
tab C will snap into position and lock the adapter to the DIN rail.
4. If the adapter does not lock in place, use a screwdriver or similar device
to move the locking tab down while pressing the adapter flush onto the
DIN rail, and release the locking tab to lock the adapter in place. If
necessary, push up on the locking tab to lock.
5. Connect the adapter wiring as shown under “Connecting Wiring” later
in this document.
2 Indicators 6 +24V DC connections
3 Wiring label 7 24V common connections
4 DeviceNet network cable (plug-in, screw-secured) 8 Flexbus connector
ATTENTION: During mounting of all devices, be sure that all debris (metal chips,
wire strands, etc.) is kept from falling into the module. Debris that falls into the
module could cause damage on power up.
Component Identification
44977
B
C
A

10 Rockwell Automation Publication 1794-IN099D-EN-P - November 2018
FLEX I/O DeviceNet Adapter Module
Mount on a Panel or Wall
If mounting this adapter to a panel or wall, refer to publication 1794-IN135,
Panel Mounting Kit, Cat. No. 1794-NM1/B.
Mounting (or Replacing) the Adapter on an Existing System
1. Remove the DeviceNet plug-in connector from the front of the adapter.
2. Disconnect any wiring jumpered to the adjacent terminal base.
3. Open the module latching mechanism and remove the module from the
base unit to which the adapter will be attached.
4. Push the Flexbus connector toward the right side of the terminal base to
unplug the backplane connection.
5. Release the locking tab and remove the adapter module.
6. Before installing the new adapter, notice the notch on the right rear of
the adapter. This notch accepts the hook on the terminal base unit. The
notch is open at the bottom. The hook and adjacent connection point
keep the terminal base and the adapter tight together, reducing the
possibility of a break in communication over the backplane.
44978