Rockwell Automation 1794-IF4I FLEX I/O 4 Isolated Input Module - Manual (Page 2)

2 FLEX™ I/O Isolated Input Analog Module
Publication 1794-IN038E-EN-P - November 2011
European Hazardous Location Approval
North American Hazardous Location Approval
The 1794-IF4I module is hazardous location approved.
Install the Analog Input Module
The module mounts on a 1794 terminal base.
1. Rotate the keyswitch (3) on the terminal base (4) clockwise to position 3 as
required for this type of module.
2. Make sure the FlexBus connector (1) is pushed all the way to the left to
connect with the neighboring terminal base/adapter. You cannot install
the module unless the connector is fully extended.
3. Make sure the pins on the bottom of the module are straight so they will
align properly with the connector in the terminal base.
4. Position the module (7) with its alignment bar (6) aligned with the groove
(5) on the terminal base.
5. Press firmly and evenly to seat the module in the terminal base unit. The
module is seated when the latching mechanism (2) is locked into the
module.
Connect Wiring for 1794-TB2, 1794-TB3, 1794-TB3S, 1794-TB3T, and
1794-TB3TS
1. Connect individual input wiring to numbered terminals on the 0…15 row
(A) as indicated in the Wiring Connections for the 1794-IF4I Input
Module table. Use Belden 8761 cable for signal wiring.
2. Connect each channel signal return to the associated terminal on row (A).
3. Connect the +V DC power lead to terminal 34 on the 34…51 row (C), and
the -V common/return to terminal 16 on the 16…33 row (B).
4. If daisychaining power to the next terminal base, connect a jumper from
terminal 51 (+V DC) on this base unit to terminal 34 on the next base unit.
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
Observe the following additional 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.
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.
 If this product contains batteries,
they must only be changed in an area
known to be nonhazardous.
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.
Description Description
1 FlexBus connectors 5 Groove
2 Latching mechanism 6 Alignment bar
3 Keyswitch 7 Module
4 Terminal base
ATTENTION
If multiple power sources are used, do not exceed the specified isolation
voltage.
WARNING
For Class I Division 2 applications, use only Class I Division 2 listed or
recognized accessories and modules approved for used within the 1794
platform.
ATTENTION
To reduce susceptibility to noise, power analog modules and digital
modules from separate power supplies.
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