Allen-Bradley POINT I/O 1734-OB2 User manual

Installation Instructions
POINT I/O Output Module
Catalog numbers 1734-OB2, 1734-OB4, 1734-OB8, Series C
Table of Contents
Topic Page
Important User Information 2
Environment and Enclosure 3
Preventing Electrostatic Discharge 3
North American Hazardous Location Approval 5
European Hazardous Location Approval 6
About the Module 7
Install the Mounting Base 8
Install the Module 8
Install the Removable Terminal Block 9
Remove a Mounting Base 9
Communicate with the Module 10
Wire the Modules 11
Interpret Status Indicators 16
Specifications 18
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2POINT I/O Output Module
Publication 1734-IN018B-EN-P - June 2012
Important User Information
Solid-state equipment has operational characteristics differing from those of electromechanical
equipment. Safety Guidelines for the Application, Installation and Maintenance ofSolid State Controls
(Publication SGI-1.1availablefrom 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
becauseof the wide variety ofuses forsolid-state equipment, all persons responsible for applying this
equipment must satisfy themselves that each intended applicationof this equipment is acceptable.
In no event will RockwellAutomation, 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, orsoftwaredescribed in this manual.
Reproductionof the contents of thismanual, 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: Identifiesinformation about practices or circumstances that can lead to
personal injury or death, property damage, or economic loss. Attentions help you
identify ahazard, avoid a hazard and recognizethe 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) toalert people that surfaces may reach dangerous temperatures.
IMPORTANT Identifies information thatis critical for successful applicationand understanding of
the product.

POINT I/O Output Module 3
Publication 1734-IN018B-EN-P - June 2012
Environment and Enclosure
Preventing Electrostatic Discharge
This equipment is intended for use in a Pollution Degree 2 industrial
environment,inovervoltageCategoryII applications(asdefinedin IEC60664-1),
at altitudes up to 2000 m (6562 ft) without derating.
This equipment is considered Group 1, Class A industrial equipment according
toIEC/CISPR11.Withoutappropriateprecautions,theremaybedifficultieswith
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
injuryresultingfromaccessibilitytoliveparts.Theenclosuremusthavesuitable
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 the following:
• Industrial Automation Wiring and Grounding Guidelines, publication
1770-4.1, 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.
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4POINT I/O Output Module
Publication 1734-IN018B-EN-P - June 2012
WARNING:
• Donotdisconnectequipmentunlesspowerhasbeenremovedortheareais
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.
• WhenusedinaClass I, Division2,hazardouslocation,thisequipmentmust
be mounted in a suitable enclosure with proper wiring method that
complies with the governing electrical codes.
• If this product contains batteries, they mustonly be changed in an area
known to be nonhazardous.
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.
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.
• Do not wire more than 2 conductors on any single terminal.

POINT I/O Output Module 5
Publication 1734-IN018B-EN-P - June 2012
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 withinasystem,themostadversetemperaturecode
(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
detempératureleplusdéfavorable (codedetempérature 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
hasbeenremovedortheareaisknowntobe
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
avantdedébrancherlesconnecteurs.Fixer
tous les connecteurs externes reliés à cet
équipement à l'aide de vis, loquets
coulissants, connecteurs filetés ou autres
moyens fournis avec ceproduit.
• Lasubstitutionde composantspeut 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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6POINT I/O Output Module
Publication 1734-IN018B-EN-P - June 2012
European Hazardous Location Approval
European Zone 2 Certification. The following applies when the product bears the
Ex Marking.
ATTENTION: This equipment is intended for use in potentially explosive
atmospheres as defined by European Union Directive 94/9/EC and has been
found to comply with the Essential Health and Safety Requirements relating to
thedesign and constructionof Category3 equipment intended foruse inZone 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 and EN 60079-0.
WARNING: Observethe followingadditionalZone 2certificationrequirements:
• 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
Rockwell Automation.
• 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, orother means provided with
this product.
• This equipment must be used only with ATEX certified Rockwell
Automation backplanes.
• Donotdisconnectequipmentunlesspowerhasbeenremovedortheareais
known to be nonhazardous.

POINT I/O Output Module 7
Publication 1734-IN018B-EN-P - June 2012
About the Module
You can use these Series C POINT I/O ™ output modules with DeviceNet and
PROFIBUS adapters. If you are using RSLogix 5000 software, version 11 or higher, you
can also use the Series C modules with ControlNet and Ethernet adapters.
Use this diagram to identify the external features of the module. The 1734-VHSC5
module is shown here.
POINT I/O Output Module
Description Description
1 Modulelocking mechanism 6 Mountingbase
2 Slide-in writable label 7 Interlocking side pieces
3 Insertable I/O module 8 Mechanical keying (orange
24VDC
Source
Output
Module
Status
Network
Status
1734
OB4E
NODE:
0
1
2
3
1
10
9
8
7
2
4
5
6
3
The wiring base assembly consists of a
mounting base, 1734-MB, and removable
terminal block, 1734-RTB or 1734-RTBS. 44330
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8POINT I/O Output Module
Publication 1734-IN018B-EN-P - June 2012
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.
4. To remove the mounting base from the DIN rail, remove the module and use a
small bladed screwdriver to rotate the base locking screw to a vertical position.
This releases the locking mechanism. Then lift straight up to remove.
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.
Description Description
4 Removableterminalblock (RTB) handle 9 DIN rail locking screw (orange)
5 Removable terminal block 10 Module wiring diagram
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.

POINT I/O Output Module 9
Publication 1734-IN018B-EN-P - June 2012
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.
4. Press to secure. The module locks into place.
Install the Removable Terminal Block
A removable terminal block (RTB) is supplied with your wiring base assembly. To remove,
pull up on the RTB handle. This allows the mounting base to be removed and replaced as
necessary without removing any of the wiring. To reinsert the removable terminal block,
proceed as follows:
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.
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.
WARNING: When you connect or disconnect the Removable Terminal Block
(RTB)withfieldsidepowerapplied,an electricalarc can occur.This could cause
an explosion in hazardous location installations.
Be sure that power is removed or the area is nonhazardous before proceeding.
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10 POINT I/O Output Module
Publication 1734-IN018B-EN-P - June 2012
7. Lift straight up to remove.
Communicate with the Module
I/O messages are sent to (consumed) and received from (produced) the POINT I/O
modules. These messages are mapped onto the processor memory. This POINT I/O
output module consumes 1 byte of I/O data (scanner Tx).
Default Data Map for 1734-OB2
Message size: 1 Byte
76543210
Consumes (scanner Tx) Not used Ch1 Ch0 Channel state
Where: 0 = Off, 1 = On
Default Data Map for 1734-OB4
Message size: 1 Byte
76543210
Consumes(scannerTx) Not used Ch3 Ch2 Ch1 Ch0 Channelstate
Where: 0 = Off, 1 = On
Default Data Map for 1734-OB8
Message size: 1 Byte
76543210
Consumes(scanner Tx) Ch7 Ch6 Ch5 Ch4 Ch3 Ch2 Ch1 Ch0 Channelstate
Where: 0 = Off, 1 = On