Allen-Bradley 1734-IB2 User manual

Installation Instructions
POINT I/O Input Modules
Catalog numbers 1734-IB2, 1734-IB4, 1734-IB8, Series C
Table of Contents
Topic Page
Important User Information 2
Environment and Enclosure 3
Preventing Electrostatic Discharge 3
North American Hazardous Location Approval 4
European Hazardous Location Approval 5
Before You Begin 6
About the Module 7
Install the Mounting Base 7
Install the Module 8
Install the Removable Terminal Block 9
Remove a Mounting Base 10
Communicate with Your Module 11
Wire the Module 12
Interpret Status Indicators 18
Specifications 20

2POINT I/O Input Modules
Publication 1734-IN051H-EN-E - April 2013
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.rockwellautomation.com/literature/) 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, when necessary, we use notes to make you aware of safety considerations.
WARNING: 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.
ATTENTION: 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 and recognize the consequences.
SHOCK HAZARD: Labels may be on or inside the equipment (for example, drive or
motor) to alert people that dangerous voltage may be present.
BURN HAZARD: Labels may be on or inside the equipment (for example, drive or
motor) to alert people that surfaces may reach dangerous temperatures.
IMPORTANT Identifies information that is critical for successful application and understanding of
the product.

POINT I/O Input Modules 3
Publication 1734-IN051H-EN-E - April 2013
Environment and Enclosure
Preventing Electrostatic Discharge
ATTENTION: This equipment is intended for use in a Pollution Degree 2
industrial environment, in overvoltage Category II applications (as defined in IEC
60664-1), at altitudes up to 2000 m (6562 ft) without derating.
This equipment is considered Group 1, Class A industrial equipment according
to IEC/CISPR 11. Without appropriate precautions, there may be difficulties with
electromagnetic compatibility in residential and other environments due to
conducted and radiated disturbances.
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 enclosure must have suitable
flame-retardant properties to prevent or minimize the spread of flame,
complying with a flame spread rating of 5VA, V2, V1, V0 (or equivalent) if
nonmetallic. 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.
In addition to this publication, see:
• Industrial Automation Wiring and Grounding Guidelines, publication
1770-IN041, for additional installation requirements.
• NEMA Standard 250 and IEC 60529, as applicable, for explanations of the
degrees of protection provided by enclosures.
ATTENTION: 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.
• Use a static-safe workstation, if available.
• Store the equipment in appropriate static-safe packaging when not in use.

4POINT I/O Input Modules
Publication 1734-IN051H-EN-E - April 2013
North American Hazardous Location Approval
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.

POINT I/O Input Modules 5
Publication 1734-IN051H-EN-E - April 2013
European Hazardous Location Approval
The following applies when the product bears the Ex Marking
This equipment is intended for use in potentially explosive atmospheres as defined by
European Union Directive 94/9/EC.
DEMKO 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 Zone 2 potentially explosive atmospheres, given in Annex II to this
Directive.
Compliance with the Essential Health and Safety Requirements has been assured by
compliance with EN 60079-15.
ATTENTION: This equipment is not resistant to sunlight or other sources of
UV radiation.
WARNING: This equipment shall be mounted in an ATEX certified enclosure
with a minimum ingress protection rating of at least IP54 (as defined in
IEC60529) and used in an environment of not more than Pollution Degree 2
(as defined in IEC 60664-1) when applied in Zone 2 environments. The
enclosure must utilize a tool removable cover or door.
WARNING: This equipment shall be used within its specified ratings
defined by Rockwell Automation.
WARNING: Provision shall be made to prevent the rated voltage from being
exceeded by transient disturbances of more than 140% of the rated voltage
when applied in Zone 2 environments.
WARNING: Secure any external connections that mate to this equipment by
using screws, sliding latches, threaded connectors, or other means provided
with this product.
WARNING: Do not disconnect equipment unless power has been removed
or the area is known to be nonhazardous.

6POINT I/O Input Modules
Publication 1734-IN051H-EN-E - April 2013
Before You Begin
You can use these Series C POINT I/O™ Input Modules with DeviceNet and PROFIBUS
adapters. If you are using RSLogix 5000 software, version 11 or higher, you can also use the
modules with ControlNet and Ethernet adapters.
Use this diagram to identify the external features of the module.
POINT I/O Input Module
Description Description
1 Module locking mechanism 6 Mounting base
2 Slide-in writable label 7 Interlocking side pieces
3 Insertable I/O module 8 Mechanical keying
4 Removable Terminal Block handle 9 DIN rail locking screw
5 Removable Terminal Block (RTB) 10 Module wiring diagram
Module
Status
Network
Status
NODE:
0
1
2
3
1
10
9
8
7
2
3
4
5
6
45720

POINT I/O Input Modules 7
Publication 1734-IN051H-EN-E - April 2013
About the Module
The POINT I/O sink input modules are available in two-input, four-input, and
eight-input options. They install on mounting bases that mount on a DIN rail. All wiring
is made to a Removable Terminal Block (RTB) mounted on the mounting base.
Install the Mounting Base
To install the mounting base on the DIN rail, proceed as follows:
1. Position the mounting base vertically above the installed units (adapter, power
supply or existing module).
2. Slide the mounting base down allowing the interlocking side pieces to engage the
adjacent module or adapter.
3. Press firmly to seat the mounting base on the DIN rail. The mounting base snaps
into place.
ATTENTION: This product 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 (for example, aluminum or plastic) that can
corrode, oxidize, or are poor conductors, can result in improper or intermittent
grounding. Secure DIN rail to mounting surface approximately every 200 mm
(7.8 in.) and use end-anchors appropriately.

8POINT I/O Input Modules
Publication 1734-IN051H-EN-E - April 2013
Install the Module
The module can be installed before or after base installation. Make sure that the mounting
base is correctly keyed before installing the module into the mounting base. In addition,
make sure the mounting base locking screw is positioned horizontal referenced to the base.
1. Using a bladed screwdriver, rotate the keyswitch on the mounting base clockwise
until the number required for the type of module being installed aligns with the
notch in the base.
2. Make certain the DIN rail locking screw is in the horizontal position. You cannot
insert the module if the locking mechanism is unlocked.
3. Insert the module straight down into the mounting base and press to secure. The
module locks into place.
WARNING: 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.
Repeated electrical arcing causes excessive wear to contacts on both the
module and its mating connector. Worn contacts may create electrical
resistance that can affect module operation.
ATTENTION: Do not remove or replace an Adapter Module while power is
applied. Interruption of the backplane can result in unintentional operation or
machine motion.
ATTENTION: Do not discard the end cap. Use this end cap to cover the
exposed interconnections on the last mounting base on the DIN rail. Failure to
do so could result in equipment damage or injury from electric shock.

POINT I/O Input Modules 9
Publication 1734-IN051H-EN-E - April 2013
Install the Removable Terminal Block
A Removable Terminal Block (RTB) is supplied with your wiring base assembly. This
allows the mounting base to be removed and replaced as necessary without removing any
of the wiring.
To i ns e r t th e R e m ov a b l e Term i na l B l o c k , p r o c e e d a s f o l l o w s :
1. Insert the end opposite the handle into the base unit. This end has a curved
section that engages with the wiring base.
2. Rotate the terminal block into the wiring base until it locks itself in place.
3. If an I/O module is installed, snap the RTB handle into place on the module.
WARNING: When you connect or disconnect the Removable Terminal Block
(RTB) with field side power applied, 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: When used in a Class I, Division 2, hazardous location, this
equipment must be mounted in a suitable enclosure with proper wiring method
that complies with the governing electrical codes.

10 POINT I/O Input Modules
Publication 1734-IN051H-EN-E - April 2013
Remove a Mounting Base
To remove a mounting base, you must remove any installed module, and the module
installed in the base to the right. Remove the Removable Terminal Block, if wired.
1. Unlatch the RTB handle on the I/O module.
2. Pull on the RTB handle to remove the Removable Terminal Block.
3. Press on the module lock on the top of the module.
4. Pull on the I/O module to remove from the base.
5. Repeat steps 1, 2, 3 and 4 for the module to the right.
6. Use a small bladed screwdriver to rotate the orange base locking screw to a
vertical position. This releases the locking mechanism.
7. Lift straight up to remove.

POINT I/O Input Modules 11
Publication 1734-IN051H-EN-E - April 2013
Communicate with Your Module
I/O messages are sent to (consumed) and received from (produced) the POINT I/O
modules. These messages are mapped into the processor’s memory.
This POINT I/O input module produces 1 Byte of input data (scanner Rx). It does not
consume I/O data (scanner Tx).
Default Data Map for 1734-IB2
Message size: 1 Byte
76543210
Produces (Rx) I1 I0
Consumes (Tx) No consumed data
Where: I1 = Channel 1, I0 = Channel 0,
0 = Off, 1 = On
Default Data Map for 1734-IB4
Message size: 1 Byte
76543210
Produces (Rx) I3 I2 I1 I0
Consumes (Tx) No consumed data
Where: I3 = Channel 3, I2 = Channel 2, I1 = Channel 1, I0 = Channel 0,
0 = Off, 1 = On
Default Data Map for 1734-IB8
Message size: 1 Byte
76543210
Produces (Rx) I7 I6 I5 I4 I3 I2 I1 I0
Consumes (Tx) No consumed data
Where: I7 = Channel 7, I6 = Channel 6, I5 = Channel 5, I4 = Channel 4,
I3 = Channel 3, I2 = Channel 2, I1 = Channel 1, I0 = Channel 0,
0 = Off, 1 = On

12 POINT I/O Input Modules
Publication 1734-IN051H-EN-E - April 2013
Wire the Module
24VDC
Sink
Input
Module
Status
Network
Status
1734
IB2
0
1
NODE:
24VDC
Sink
Input
Module
Status
Network
Status
1734
IB4
0
1
2
3
NODE:
24VDC
Sink
Input
Module
Status
Network
Status
1734
IB8
0
1
2
3
4
5
6
7
NODE:
Module status
NC
CC
VV
NC
Network status
Input 0
CC
VV
Input 2
Status of
inputs 0 & 4
Status of input 1
Status of input 2
Status of input 3
Input = 0, 1, 2, 3, 4, 5, 6, 7
V and C are daisy-chained
from either the adapter,
1734-FPD, 1734-EP24DC,
or from a user-supplied
auxiliary terminal block.
Input = 0, 1
NC = No connection (2, 3)
C = Common (4, 5)
V = Supply (6, 7)
Input = 0, 1, 2, 3
C = Common (4, 5)
V = Supply (6, 7)
1734-IB2 1734-IB4 1734-IB8
Status of
inputs 1 & 5
Status of
inputs 2 & 6
Status of
inputs 3 & 7
45721 45722 45723
Input 1
Input 2 Input 3
Input 1
Input 4
Input 0
Input 6
Input 3
Input 5
Input 7
Input 1Input 0
Status of input 0
Status of
input 1
Status of
input 0

POINT I/O Input Modules 13
Publication 1734-IN051H-EN-E - April 2013
Wiring for 1734-IB2 – Sink Input
WARNING: 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.
WARNING: To comply with the CE Low Voltage Directive (LVD), this equipment
must be powered from a source compliant with the following:
Safety Extra Low Voltage (SELV) or Protected Extra Low Voltage (PELV).
Channel Input Common Voltage
0046
1157
Connect common on 3-wire proximity switches.12/24V DC is supplied through the internal power bus.
In 1
In 0
Prox
1
0
NC
NC 3
2
C
C5
4
V
V7
6
Prox
V = 12/24V DC
C = Common
2-wire 3-wire

14 POINT I/O Input Modules
Publication 1734-IN051H-EN-E - April 2013
Wiring for 1734-IB4 – Sink Input
Channel Input Common Voltage
0046
1157
2246
3357
Connect common on 3-wire proximity switches.12/24V DC is supplied through the internal power bus.
In 1
In 0
Prox
1
0
In 3
In 2 3
2
C
C5
4
V
V7
6
Prox
V = 12/24V DC
C = Common
2-wire 3-wire
Prox
Prox

POINT I/O Input Modules 15
Publication 1734-IN051H-EN-E - April 2013
Wiring for 1734-IB8 – Sink Input
Note: When connecting more than one wire in a termination point, make sure that both
wires are the same gauge and type.
Channel Input Channel Input
0044
1155
2266
3377
Daisychain common and power connections from 1734 adapter, 1734-FPD, 1734-EP24DC, or from
user-supplied external auxiliary terminal block.
In 1
In 0 Prox
1
01
0
In 3
In 2 3
2
In 5In 4 5
4
In 7In 6 7
6
Prox
Prox
Prox
Prox
Prox
Prox
Prox
CC
V = 12/24V DC
C = Common
3-wire
VV
2-wire
3-wire
2-wire
3-wire
2-wire
3-wire
2-wire

16 POINT I/O Input Modules
Publication 1734-IN051H-EN-E - April 2013
Wiring Example for 1734-IB8 Using 2-Wire Proximity Switches
System
Power
DeviceNet
Power
Network
Status
Module
Status
1734
OB8E
3
2
0
1
7
6
4
5
Network
Status
Module
Status
1734
IB8
3
2
0
1
7
6
4
5
Prox
Prox
Prox
Prox
Prox
Prox
Prox
Prox
DeviceNet
24V DC return
24V DC
Terminal block with bus connector strip 45724

POINT I/O Input Modules 17
Publication 1734-IN051H-EN-E - April 2013
Wiring Example for 1734-IB8 Using 3-Wire Proximity Switches
System
Power
DeviceNet
Power
Network
Status
Module
Status
1734
OB8E
3
2
0
1
7
6
4
5
Network
Status
Module
Status
1734
IB8
3
2
0
1
7
6
4
5
Prox
Prox
Prox
Prox
Prox
Prox
Prox
Prox
DeviceNet
24V DC return
24V DC
Terminal block with
bus connector strip Terminal block with
bus connector strip 45725

18 POINT I/O Input Modules
Publication 1734-IN051H-EN-E - April 2013
Interpret Status Indicators
Refer to the following diagram and table for information on how to interpret the
status indicators.
24VDC
Sink
Input
Module
Status
Network
Status
1734
IB2
0
1
NODE:
24VDC
Sink
Input
Module
Status
Network
Status
1734
IB4
0
1
2
3
NODE:
24VDC
Sink
Input
Module
Status
Network
Status
1734
IB8
0
1
2
3
4
5
6
7
NODE:
Module status
Network status
Status of
input 1
Status of input 2
Status of input 3
1734-IB2 1734-IB4 1734-IB8
45721 45722 45723
Status of
input 0 Status of
inputs 0 & 4
Status of
inputs 1 & 5
Status of
inputs 2 & 6
Status of
inputs 3 & 7
Status of input 1
Status of input 0

POINT I/O Input Modules 19
Publication 1734-IN051H-EN-E - April 2013
Indicator Status for Modules
Status Description
Module status Off No power applied to device.
Green Device operating normally.
Flashing green Device needs commissioning due to missing, incomplete, or
incorrect configuration.
Flashing red Recoverable fault.
Red Unrecoverable fault – may require device replacement.
Flashing red/green Device is in self-test mode.
Network status Off Device is not online:
- Device has not completed dup_MAC-id test.
- Device not powered – check module status indicator.
Flashing green Device is online but has no connections in the established state.
Green Device is online and has connections in the established state.
Flashing red One or more I/O connections are in timed-out state.
Red Critical link failure – failed communication device. Device detected
error that prevents it from communicating on the network.
Flashing red/green Communication faulted device – the device has detected a
network access error and is in communication faulted state. Device
has received and accepted an Identity Communication Faulted
Request – long protocol message.
I/O status Off Input is in the off state.
Yellow Input is in the on state.

20 POINT I/O Input Modules
Publication 1734-IN051H-EN-E - April 2013
Specifications
POINT I/O Input Module – 1734-IB2, 1734-IB4, 1734-IB8
Attribute Value
Inputs per module 1734-IB2 – 2 (1 group of 2), sinking
1734-IB4 – 4 (1 group of 4), sinking
1734-IB8 – 8 (1 group of 8), sinking
Voltage, on-state, min 10V DC
Voltage, on-state, nom 24V DC
Voltage, on-state, max 28.8V DC
Current, on-state, min 2 mA
Current, on-state, nom 4 mA @ 24V DC
Current, on-state, max 5 mA
Voltage, off-state, max 5V DC
Current, off-state, min 1.5 mA
Impedance, input, nom 3.6 kΩ
Impedance, input, max 4.7 kΩ
Input filter time(1)
OFF to ON
ON to OFF
(1) Input off-to-on filter time is the time from a valid input signal to recognition by the module. Input on-to-off time is the
time from a valid input signal to recognition by the module.
0.5 ms hardware plus 0...63 ms (user-selectable)
0.5 ms hardware plus 0...63 ms (user-selectable)
Field wiring terminations 1734-IB2
0 – Input 0
1 – Input 1
2 – No connection
3 – No connection
4 – Common
5 – Common
6 – User supply
7 – User supply
1734-IB4
0 – Input 0
1 – Input 1
2 – Input 2
3 – Input 3
4 – Common
5 – Common
6 – User supply
7 – User supply
1734-IB8
0 – Input 0
1 – Input 1
2 – Input 2
3 – Input 3
4 – Input 4
5 – Input 5
6 – Input 6
7 – Input 7
General Specifications(1)
Attribute Value
Terminal base screw torque 0.8 Nm (7 lb-in.)
Module location 1734-TB or 1734-TBS wiring base assembly
Indicators, network status 1 green/red, logic side