North american hazardous location approval, Installing your adapter module, Mount or replace the adapter on an existing system – Rockwell Automation 1794-ASB/E_ASB2/D_ASBK/E_ASB2K/D Remote I/O Adapter Modules Installation Instructions User Manual

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2 FLEX I/O Remote I/O Adapter Modules

Publication 1794-IN098E-EN-P - January 2011

North American Hazardous Location Approval

The following modules are North American Hazardous Location approved:
1794-ASB and 1794-ASBK Series E; 1794-ASB2, Series D.

Remote I/O Adapter 1794-ASB/E, 1794-ASBK/E, 1794-ASB2/D

These adapters are shipped configured for standard addressing mode. In
Standard Addressing Mode, the 1794-ASB(K) series E adapter can be used as a
replacement for 1794-ASB series A and B remote I/O adapters, and the
1794-ASB2 series D can be used for a replacement for 1794-ASB2 series A
2-slot remote I/O adapters.

Installing Your Adapter Module

Mount on a DIN rail before installing the Terminal Base Units

1. Hook the lip on the rear of the adapter onto the top of the DIN rail,

and rotate the adapter module onto the rail.

2. Press the adapter module down onto the DIN rail until flush. Locking

tab C will snap into position and lock the adapter module to the DIN
rail.

3. 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.

4. Connect the adapter wiring as shown under “Wiring” later in this

document.

Mount or Replace the Adapter on an Existing System

1. Remove the RIO plug-in connector from the front of the adapter.

2. Disconnect any wiring jumpered to the adjacent terminal base.
3. Open the module latching mechanism and remove the module from

the base unit to which the adapter will be attached.

4. Push the FlexBus connector toward the right side of the terminal base

to unplug the backplane connection. (When fully retracted, you will
see a raised dot on the connector).

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

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.

•IIf 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'environnemen t 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.

Component Identification

1

Remote I/O Adapter Module

6

Remote I/O cable connector

2

Indicators

7

+V DC connections

3

Communication reset button (PRL)

8

-V common connections

4

Access door to switches S1 and S2

9

FlexBus connector

5

Switches S1 and S2 (behind door)

1

2

3

4, 5

6

7

8

9

WARNING

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.

WARNING

If you connect or disconnect the communications cable with power applied to
this module 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.

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

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.

A

B

C

C

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