Rockwell Automation 1794-AENTR, 1794-AENTRXT User Manual

Installation Instructions

IMPORTANT

WARNING

ATTENTION

SHOCK HAZARD

BURN HAZARD

ATTENTION

ATTENTION

FLEX I/O™ Dual Port EtherNet/IP Adapter
Modules

Cat. No. 1794-AENTR, 1794-AENTRXT, Series A

(1794-AENTRXT module is 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
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 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 that is critical for successful application and
understanding of the product.

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 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 on or inside the equipment, for example, a drive or
motor, to alert people that dangerous voltage may be present.

SGI-1.1 available from your

Prevent 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.

• Use a static-safe workstation, if available.

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

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 nonmetallic. 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, for additional
installation requirements.

• NEMA Standard 250 and IEC 60529, as applicable, for
explanations of the degrees of protection provided by different
types of enclosure.

Labels may be on or inside the equipment, for example, a drive or
motor, to alert people that surfaces may reach dangerous
temperatures.

2 FLEX I/O™ Dual Port EtherNet/IP Adapter Modules

WARNING

WARNING

AVERTISSEMENT

ATTENTION

ATTENTION

European Hazardous Location Approval

The following modules are European Zone 2 approved: 1794-AENTR,
1794-AENTRXT

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

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.

Marking)

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 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.

North American Hazardous Location Approval

The following adapters are North American Hazardous Location approved:
1794-AENTR, 1794-AENTRXT.

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.

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.

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 1794-IN131A-EN-P - January 2012

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

(PELV).

Voltage

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.

FLEX I/O™ Dual Port EtherNet/IP Adapter Modules 3

ATTENTION

ATTENTION

1

9

8

756

3

2

45821

4

45822

A

B

C

WARNING

WARNING

WARNING

ATTENTION

Dual Port EtherNet/IP Adapter – 1794-AENTR, 1794-AENTRXT

Component Identification

1 Dual Port EtherNet/IP adapter 6 Module locking tab
2 FlexBus connector 7 Network cable RJ45 connectors

(underside)
3 24V common connections 8 MAC ID label
4 24V DC connections 9 Status indicators
5 IP address switches

Install Your Adapter Module

Mount on a Panel or Wall

If mounting this adapter to a panel or wall, refer to publication 1794-TD013,
Panel Mounting Kit, Cat. No. 1794-NM1.

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. 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.

Mount or Replace the Adapter on an Existing System

1. Disconnect any wiring jumpered to the adjacent terminal base.

2. Remove the Ethernet connectors from the bottom of the adapter.

If you connect or disconnect the communication cable with power
applied to the adapter 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.

3. Disconnect any user power wiring connections to the adapter.

4. Open the module latching mechanism and remove the module from the

base unit to which the adapter will be attached.

5. Push the FlexBus connector toward the right side of the terminal base to

unplug the backplane connection.

Make certain the FlexBus connector is completely clear of the
adapter. The slide must be completely to the right and the raised spot
on the slide visible.

6. Release the locking tab and remove the adapter module.

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

During mounting of all devices, be sure that all debris (for example,
metal chips, wire strands) is kept from falling into the module. Debris
that falls into the module could cause damage on power up.

keep the terminal base and the adapter tight together, reducing the
possibility of a break in communication over the backplane.

Do not remove or replace an Adapter Module while power is
applied. Interruption of the backplane can result in unintentional
operation or machine motion.

7. Complete the adapter mounting as shown below.
Push down and in at the same time to lock the adapter to the DIN rail.

Mount on a DIN Rail

1. Position the adapter module (A) on an IEC standard (35 x 7.5 x 1 mm)
top-hat DIN rail (B) at a slight angle (DIN rail: Allen-Bradley part
number 199-DR1; 46277-3; EN50022).

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 module in place.
If necessary, push up on the locking tab to lock.

2. Hook the lip on the rear of the adapter onto the top of the DIN rail, and
rotate the adapter module onto the rail.

3. Press the adapter module down onto the DIN rail until flush. Locking
tab (C) snaps the adapter into position and locks it onto the DIN rail.

4. If the adapter module does not lock in place, use a screwdriver or similar
device to move the locking tab down while pressing the adapter module
flush onto the DIN rail, and release the locking tab to lock the adapter
module in place. If necessary, push up on the locking tab to lock.

5. Connect the adapter wiring as shown in the Connect Wiring diagram.

Publication 1794-IN131A-EN-P - January 2012