Rockwell Automation 1794-IB16XOB16P, 1794-IB10XOB6 User Manual

Installation Instructions

FLEX I/O Digital Input/Output Modules

Cat. No. 1794-IB10XOB6, 1794-IB16XOB16P

Important User Information

Solid state equipment has operational characteristics differing from those of
electromechanical equipment. Safety Guidelines for the Application, Installation and
Maintenance of Solid State Controls (Publication SGI-1.1 available from your local Rockwell
Automation sales office or online at http://www.ab.com/manuals/gi) describes some
important differences between solid state equipment and hard-wired electromechanical
devices. Because of this difference, and also because of the wide variety of uses for solid
state equipment, all persons responsible for applying this equipment must satisfy themselves
that each intended application of this equipment is acceptable.

In no event will Rockwell Automation, Inc. be responsible or liable for indirect or
consequential damages resulting from the use or application of this equipment.

The examples and diagrams in this manual are included solely for illustrative purposes.
Because of the many variables and requirements associated with any particular installation,
Rockwell Automation, Inc. cannot assume responsibility or liability for actual use based on
the examples and diagrams.

No patent liability is assumed by Rockwell Automation, Inc. with respect to use of
information, circuits, equipment, or software described in this manual.

Reproduction of the contents of this manual, in whole or in part, without written permission
of Rockwell Automation, Inc. is prohibited.

Throughout this manual we use notes to make you aware of safety considerations.

WARNING

IMPORTANT

ATTENTION

ATTENTION

Identifies information about practices or circumstances that can cause
an explosion in a hazardous environment, which may lead to personal
injury or death, property damage, or economic loss.

Identifies information that is critical for successful application and
understanding of the product.

Identifies information about practices or circumstances that can lead to
personal injury or death, property damage, or economic loss. Attentions
help you:

• identify a hazard

• avoid a hazard

• recognize the consequence

Environment and Enclosure

This equipment is intended for use in a Pollution Degree 2
industrial environment, in overvoltage Category II applications
(as defined in IEC publication 60664-1), at altitudes up to 2000
meters without derating.

This equipment is considered Group 1, Class A industrial
equipment according to IEC/CISPR Publication 11. Without
appropriate precautions, there may be potential difficulties
ensuring electromagnetic compatibility in other environments
due to conducted as well as radiated disturbance.

This equipment is supplied as "open type" equipment. It must
be mounted within an enclosure that is suitably designed for
those specific environmental conditions that will be present and
appropriately designed to prevent personal injury resulting
from accessibility to live parts. The interior of the enclosure
must be accessible only by the use of a tool. Subsequent
sections of this publication may contain additional information
regarding specific enclosure type ratings that are required to
comply with certain product safety certifications.

See NEMA Standards publication 250 and IEC publication
60529, as applicable, for explanations of the degrees of
protection provided by different types of enclosure. Also, see
the appropriate sections in this publication, as well as the
Allen-Bradley publication 1770-4.1 ("Industrial Automation
Wiring and Grounding Guidelines"), for additional installation
requirements pertaining to this equipment.

WARNING

ATTENTION

WARNING

ATTENTION

When 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.

FLEX I/O is grounded through the DIN rail to chassis
ground. Use zinc plated yellow-chromate steel DIN rail to
assure proper grounding. The use of other DIN rail
materials (e.g. aluminum, plastic, etc.) that can corrode,
oxidize, or are poor conductors, can result in improper or
intermittent grounding.

If you connect or disconnect wiring while the field side
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.

Preventing Electrostatic Discharge

This equipment is sensitive to electrostatic discharge, which
can cause internal damage and affect normal operation.
Follow these guidelines when you handle this equipment:

• Touch a grounded object to discharge potential static.

• Wear an approved grounding wriststrap.

• Do not touch connectors or pins on component

boards.

• Do not touch circuit components inside the
equipment.

• If available, use a static-safe workstation.

European Hazardous Location Approval

The following module is European Zone 2 approved: 1794-IB10XOB6.

European Zone 2 Certification (The following applies when the
product bears the EEx Marking)

This equipment is intended for use in potentially explosive atmospheres as
defined by European Union Directive 94/9/EC.

The LCIE (Laboratoire Central des Industries Electriques) certifies that this
equipment 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 potentially explosive atmospheres, given in
Annex II to this Directive. The examination and test results are recorded in
confidential report No. 28 682 010.

Compliance with the Essential Health and Safety Requirements has been
assured by compliance with EN 50021.

IMPORTANT

Observe 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

Publication 1794-IN083B-EN-P - November 2004

2

North American Hazardous Location Approval

The following modules are North Am erican Hazardous Location approv ed:
1794-IB10XOB6 an d 1794-IB16XOB16P.

The following information applies when
operating this equipment in hazardous
locations:

Products marked “ CL I, DIV 2, GP A, B, C, D” are
suitable for use in C lass I Division 2 Groups A, B, C,
D, Hazardous Locations and nonhazardous locations
only. Each product is supp lied with markings on the
rating namepla te indicating the ha zardous location
temperature co de. When combining produ cts within
a system, the most adverse temperature code
(lowest “T” number ) may be used to help deter mine
the overall temperatur e code of the system.
Combinations of equipment in your sys tem are
subject to investiga tion by the local Authority
Having Jurisdic tion at the time of in stallation.

WARNING

EXPLOSION HAZARD

• Do not disc onnect
equipment unles s power
has been removed or the
area is known to be
nonhazardous.

• Do not disc onnect
connections t o this
equipment unles s power
has been removed or the
area is known to be
nonhazardous. Secure any
external conne ctions that
mate to this equipment by
using screws, slidin g
latches, threaded
connectors, or other means
provided with this product.

• Substitu tion of
components ma y impair
suitability for Clas s I,
Division 2.

• If this product contains
batteries, they must only be
changed in an area known
to be nonhazardous.

Informations sur l’utilisation de cet équipement
en environnements dangereux :

Les produits ma rqués "CL I, DIV 2, GP A , B, C, D" ne
conviennent qu’à u ne utilisation en environne ments
de Classe I Divisio n 2 Groupes A, B, C, D dan gereux et
non dangereux. Chaque produit est livré avec des
marquages su r sa plaque d’identific ation qui
indiquent le code de te mpérature pour les
environnement s dangereux. Lorsque plu sieurs
produits sont combinés dans un système, le code de
température le plus défavorable (code de tempé rature
le plus faible) pe ut être utilisé pour détermi ner le
code de température global du système. Les
combinaisons d’équipement s dans le système sont
sujettes à inspection pa r les autorités locales
qualifiées au mom ent de l’installation.

AVERTISSEMENT

RISQUE D’EXPLOSION

• Couper le courant ou
s’assurer que l’en vironnement
est classé non dang ereux avant
de débrancher l'équipement.

• Couper le courant ou
s'assurer que l’en vironnement
est classé non dang ereux avant
de débrancher les connecteurs.
Fixer tous les connecteurs
externes reli és à cet
équipement à l'aide de vis,
loquets couliss ants,
connecteurs filetés ou autres
moyens fournis a vec ce produit.

• La substitution de
composants p eut rendre cet
équipement in adapté à une
utilisation en envir onnement de
Classe I, Division 2.

• S’assurer que
l’environneme nt est classé no n
dangereux avan t de changer
les piles.

Installing Your Digital Input/Output Module

7

3

4

The 1794-IB10XOB6 module mounts on a 1794-TB3 or -TB3S terminal base.
The 1794-IB16XOB16P module mounts on a 1794-TB32 or -TB32S terminal
base.

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.

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.

1

2

6

5

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..

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-IB10XOB6

1. Connect individual input and output wiring to numbered terminals on
the 0-15 row (A) as indicated in the table below.

2. Connect the associated +V dc power lead of the input device to the
corresponding terminal on the 34-51 row (C) for each input as
indicated in the table below. (The +V power terminals of row (C) are
internally connected together.)

3. Connect the associated input device common (3-wire devices only)
and output device common to the corresponding terminals on the
16-33 row. (B) for each input and output as indicated in the table
below. (Commons are internally connected together.)

4. Connect +V dc power to terminal 34 on the 34-51 row (C).

5. Connect dc common to terminal 16 on the 16-33 row (B).

6. 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.

7. 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.

Wiring Connections for the 1794-IB10XOB6

1

Input

Sink Input
Input 0 A-0 B-17 C-35
Input 1 A-1 B-18 C-36
Input 2 A-2 B-19 C-37
Input 3 A-3 B-20 C-38
Input 4 A-4 B-21 C-39
Input 5 A-5 B-22 C-40
Input 6 A-6 B-23 C-41
Input 7 A-7 B-24 C-42
Input 8 A-8 B-25 C-43
Input 9 A-9 B-26 C-44
Source Output
Output 0 A-10 B-27
Output 1 A-11 B-28
Output 2 A-12 B-29
Output 3 A-13 B-30
Output 4 A-14 B-31
Output 5 A-15 B-32
+V dc C-34 thru C-51 (internally connected together)
Common B-16 thru B-33 (internally connected together)

1

Two wire input devices use signal and supply terminals. Three wire devices use
signal, return and supply terminals.

Signal Return Supply

Publication 1794-IN083B-EN-P - November 2004