Rockwell Automation 1794-IV16_OV16_OV16P Flex I/O Digital DC Sourcing Input and Sinking Output Modules I.I. - Manual (Page 2)

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Publication 1794-IN095A-EN-P - April 2004
North American Hazardous Location Approval
The following modules are North American Hazardous Location approved:
1794-IV16, 1794-OV16 and 1794-OV16P.
Installing Your Digital Module
The module mounts on a 1794 terminal base.
1. Rotate the keyswitch (1) on the terminal base (2) clockwise to position
2 as required for this type of module.
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.
Connecting Wiring for the 1794-IV16, -OV16, and -OV16P (using a
1794-TB3 or -TB3S Terminal Base Unit)
1. Connect individual input or output wiring to numbered terminals on
the 0-15 row (A) as indicated in the table below.
2. 1794-IV16 - Connect the associated input device common to the
corresponding terminal on the 16-33 row. (B) for each input as
indicated in the table below. (Commons are internally connected
together.) If using 3-wire input devices, also connect the associated
input power lead to the corresponding terminal on the 34-51 row (C).
1794-OV16, -OV16P - Connect the associated +V dc power lead of
the output device to the corresponding terminal on the 34-51 row (C)
for each output as indicated in the table below. (The +V power
terminals of row (C) are internally connected together.)
3. Connect +V dc power to terminal 34 on the 34-51 row (C).
4. Connect dc common to terminal 16 on the 16-33 row (B).
5. 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.
6. If continuing dc common to the next base unit, connect a jumper
from terminal 33 (common) on this base unit to terminal 16 on the
next base unit.
Note: The total current draw through any terminal base unit is limited to 10A.
Separate power connections may be required.
IMPORTANT
O bserve the following additional Zone 2 certification requirements.
• This equipment is not resistant to sunlight or other sources of
UV radiation.
• The secondary of a current transformer shall not be
open-circuited when applied in Class I, Zone 2 environments.
• Equipment of lesser Enclosure Type Rating must be installed
in an enclosure providing at least IP54 protection when applied
in Class I, 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 Class I, Zone 2 environments
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.
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.
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 (metal chips, wire strands, etc.) is kept
from falling into the module. Debris that falls
into the module could cause damage on power
up.
WARNING AVERTISSEMENT
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2
3
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5
6
7
WARNING
!
If you remove or insert the module while the
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..