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

AB Parts

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.

AB Parts

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.

AB Parts

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:

The wiring base assembly consists of a

mounting base, 1734-MB, and removable

terminal block, 1734-RTB or 1734-RTBS. 44330

AB Parts

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.

AB Parts

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

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