Rockwell Automation 1794-IF2XOF2IXT FLEX XT I/O Isolated Input Analog Module - Manual (Page 2)

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Publication 1794-IN129B-EN-P - April 2009
North American Hazardous Location Approval
The following adapters are North American Hazardous Location approved:
1794-IF4IXT, 1794-OF4IXT, 1794-IF2XOF2IXT
Install Your Analog Input Module
The module mounts on a 1794 terminal base.
1. Rotate the keyswitch (1) on the terminal base (2) clockwise to
position 3 as required for 1794-IF4IXT, position 4 for 1794-OF4IXT,
and position 5 for 1794-IF2XOF2IXT.
2. Make certain the flexbus connector (3) 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 (4) with its alignment bar (5) aligned with the
groove (6) 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 (7) is
locked into the module.
Connect Wiring for Analog Inputs and Outputs
1. 1794-TB2, 1794-TB3, 1794-TB3S, 1794-TB3T, 1794-TB3TS -
Connect individual input/output wiring to numbered terminals on
the 0-15 row (A) as indicated in the Wire Connections table.
Use Belden 8761 cable for signal wiring.
1794-TBN - Connect individual input/output wiring to even
numbered terminals on the 16-33 row (B) as indicated in the
following table.
Use Belden 8761 cable for signal wiring .
2. 1794-TB2, -TB3, -TB3S, -TB3T, -TB3TS - Connect each channel
signal return to numbered terminals on 0-15 row (A) as indicated
in the following table. Use Belden 8761 cable for signal wiring.
1794-TBN - Connect each channel signal return to odd numbered
terminals on row (C) as indicated in the following table.
3. Connect any signal wiring shields to functional ground as near as
possible to the module.
1794-TB3T or -TB3TS only: Connect cable shield to terminate
C-39 through C-46 (earth ground).
4. Connect the +V DC power to terminal 34 on the 34-51 row (C) and
-V common/return to terminal 16 on the B row.
5. If daisychaining +V 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.
6. If continuing DC common (-V) to the next base unit, connect a
jumper from terminal 33 (common) on this base unit to terminal 16
on the next base unit.
Wire Connections for 1794-IF4IXT, 1794-OF4IXT, 1794-IF2XOF2IXT Modules
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.
ATTENTION
During mounting of all devices, be sure that all debris (such as metal chips, or
wire strands) is kept from falling into the module. Debris that falls into the
module could cause damage on
power up.
Keep a minimum of 25 mm (1 in.) of space on the top and bottom of the
module, for adequate ventilation between equipment.
1
2
3
4
5
6
7
ATTENTION
Connect only one current or one voltage signal per channel. Do not connect
both current and voltage on one channel.
ATTENTION
To reduce susceptibility to noise, power analog modules and digital modules
from separate power supplies.
Channel Signal
Type Label
Markings 1794-TB2, -TB3, -TB3S, -TB3T,
-TB3TS 1794-TBN
Terminal Shield (1794-TB3T,
-TB3TS Terminal
Input 0 Current I0 A-0 C-39 B-0
Current I0 Ret A-1 C-1
Voltage V0 A-2 C-40 B-2
Voltage V0 Ret A-3 C-3
Input 1 Current I1 A-4 C-41 B-4
Current I1 Ret A-5 C-5
Voltage V1 A-6 C-42 B-6
Voltage V1 Ret A-7 C-7
Output 0 Current I2 A-8 C-43 B-8
Current I2 Ret A-9 C-9
Voltage V2 A-10 C-44 B-10
Voltage V2 Ret A-11 C-11
Output 1 Current I3 A-12 C-45 B-12
Current I3 Ret A-13 C-13
Voltage V3 A-14 C-46 B-14
Voltage V3 Ret A-15 C-15