Rockwell Automation 1794-IF4ICFXT FLEX I/O Isolated Input Analog Module - Manual (Page 2)

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Publication 1794-IN130A-EN-P - December 2009
North American Hazardous Location Approval
The following adapters are North American Hazardous Location approved:
1794-IF4ICFXT
About the module
In addition to the features supported by the 1794-IF4I and 1794-IF4IXT
modules, the 1794-IF4ICFXT features three additional parameters that allow
additional control over the way the analog signals are processed by the
module. The settings are at the module level.
Settings to these parameters affect all inputs set to 150 Hz, 300 Hz, or
600 Hz. The parameters do not affect channels set at 1200 Hz.
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-IF4ICFXT.
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.
WARNING
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
Allen-Bradley.
• 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.
• 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.
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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.
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.