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Installation Instructions
FLEX I/O DeviceNet Adapter Module
1794-ADN Series C and 1794-ADNK Series C
(Modules with a K in the last position of the catalog number are
conformally coated to meet noxious gas requirements of ISA/ANSI-71.040
1985 Class G3 Environment.)
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
local Rockwell Automation sales office or online at
http://literature.rockwellautomation.com
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.
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:
identify a hazard
avoid a hazard
recognize the consequence
) describes some important differences
available from your
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 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:
Industrial Automation Wiring and Grounding Guidelines,
Rockwell Automation publication 1770-4.1,
installation requirements.
NEMA Standard 250 and IEC 60529, as applicable, for
explanations of the degrees of protection provided by
different types of enclosure.
When you insert or remove the module while backplane power is
on, or connect or disconnect the DeviceNet cable with power
applied to this module or any device on the network, 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.
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.
for additional
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 hazardous location
installations.
Be sure that power is removed or the area is nonhazardous before
proceeding.
FLEX I/O 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.
Do not remove or replace an adapter while power is applied.
Interruption of the backplane can result in unintentional operation
or machine motion.
Publication 1794-IN099C-EN-P - May 2010
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To comply with the CE Low Voltage Directive (LVD), this equipment
must be powered from a source compliant with the following:
Safety Extra Low Voltage (SELV) or Protected Extra Low Voltage
(PELV).
To comply with UL restrictions, this equipment must be powered
from a source compliant with the following:
Class 2 or Limited Voltage/Current.
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.
European Hazardous Location Approval
The following adapters are European Zone 2 approved:
1794-ADN and -ADNK series C adapters.
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.
Observe the following additional Zone 2 certification
requirements.
This equipment is not resistant to sunlight or other sources
of UV radiation.
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.
This equipment must be used only with ATEX certified
Rockwell Automation Terminal Bases.
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.
North American Hazardous Location Approval
The following adapter is North American Hazardous Location approved:
1794-ADN Series C and 1794-ADNK Series C adapters.
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 hazardou s 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.
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. Chaq ue
produit est livré avec des marquages sur sa plaque
d'identification qui indiquent le code de
température pour les environnements dan gereux.
Lorsque plusieurs produits sont combi nés 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.
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.
DeviceNet Adapter, Cat. No. 1794-ADN/C and 1794-ADNK/C
8
1
2
3
4
7
6
5
Component Identification
1 DeviceNet Adapter Module 5 DeviceNet Node selection
2 Indicators 6 +24V DC connections
3 Wiring label 7 24V common connections
4 DeviceNet network cable
(plug-in, screw-secured)
thumbwheel switches
8 Flexbus connector
Installing Your DeviceNet Adapter Module
Publication 1794-IN099C-EN-P - May 2010