Allen-Bradley ControlLogix 1756-OF4 Manual de usuario

Publication 1756-IN016B-EN-P - November 2003

Installation Instructions

ControlLogix Voltage/Current Output Module

Catalog Number 1756-OF4

Obtain a User Manual

This product also has a user manual (pub. no. 1756-UM009). To view

it, visit www.ab.com/manuals or www.theautomationbookstore.com.

To purchase a manual, you can:

•contact your distributor or Rockwell Automation representative

•visit www.theautomationbookstore.com and place an order

•call 800.963.9548 (USA/Canada) or 001.320.725.1574 (outside

USA/Canada)

To: See page:

Identify the Module Components 7

Note the Power Requirements 7

Install the Module 8

Key the Module and Removable Terminal Block/Interface Module 9

Wire the Removable Terminal Block 10

Wire the Module 13

Assemble the Removable Terminal Block and the Housing 15

Install the Removable Terminal Block onto the Module 15

Check the Indicators 16

Remove the Removable Terminal Block from the Module 17

Remove the Module 17

See Specifications 18

AB PLCs

2ControlLogix Voltage/Current Output Module

Publication 1756-IN016B-EN-P - November 2003

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 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.

IMPORTAN

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

product.

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

•recognize the consequence

SHOCK HAZAR

Labels may be located on or inside the drive to alert people that dangerous voltage may

be present.

BURN HAZARD Labels may be located on or inside the drive to alert people that surfaces may be

dangerous temperatures.

ControlLogix Voltage/Current Output Module 3

Publication 1756-IN016B-EN-P - November 2003

Environment and Enclosure

Prevent 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 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.

NOTE: 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.

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.

•If available, use a static-safe workstation.

•When not in use, store the equipment in appropriate static-safe packaging.

AB PLCs

4ControlLogix Voltage/Current Output Module

Publication 1756-IN016B-EN-P - November 2003

Removal and Insertion Under Power

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.

European Hazardous Location Approval

If you install the module in a European Zone 2 location, consider:

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.

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 When using this product, also consider the following:

•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.

ControlLogix Voltage/Current Output Module 5

Publication 1756-IN016B-EN-P - November 2003

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.

AB PLCs

6ControlLogix Voltage/Current Output Module

Publication 1756-IN016B-EN-P - November 2003

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.

•If 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’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.

The following information applies

when operating this equipment in

hazardous locations:

Informations sur l’utilisation de cet

équipement en environnements

dangereux:

ControlLogix Voltage/Current Output Module 7

Publication 1756-IN016B-EN-P - November 2003

Identify the Module Components

You received the following components with your order:

•1756-OF4 module

•Removable Terminal Block (RTB) door label

If you did not receive these components, contact your local

distributor Rockwell Automation sales office.

This module mounts in a 1756 chassis and uses a separately-ordered

RTB or a Bulletin 1492 Interface Module (IFM)(1) to connect all

field-side wiring. This module uses one of the following RTBs:

•1756-TBNH 20 position NEMA RTB

•1756-TBSH 20 position Spring Clamp RTB

Use an extended-depth cover (1756-TBE) for applications with heavy

gauge wiring or requiring additional routing space. When using an

IFM, consult the documentation that came with it to connect wiring.

Note the Power Requirements

This module receives power from the 1756 chassis power supply and

requires 2 sources of power from the ControlLogix backplane:

•150mA at 5.1V dc

•120mA at 24V dc

Add this current/power value (3.65W) to the requirements of all other

modules in the chassis to prevent overloading the power supply.

(1) The ControlLogix system has been agency certified using the only the ControlLogix RTBs (i.e.

1756-TBCH, 1756-TBNH 1756-TBSH and 1756-TBS6H). Any application that requires agency

certification of the ControlLogix system using other wiring termination methods may require

application specific approval by the certifying agency.

IMPORTANT Before you install your module, you should:

•install and ground a 1756 chassis and power supply.

•order and receive an RTB or IFM, and its

components, for your application.

AB PLCs

8ControlLogix Voltage/Current Output Module

Publication 1756-IN016B-EN-P - November 2003

Install the Module

You can install or remove the module while chassis power is applied.

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.

1. Align the circuit board with the top and bottom chassis guides.

2. Slide the module into chassis until module locking tabs click.

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.

20861–M

Printed

Circuit

Board

Locking tab

ControlLogix Voltage/Current Output Module 9

Publication 1756-IN016B-EN-P - November 2003

Key the Module and Removable Terminal Block/Interface Module

Use the wedge-shaped keying tabs and U-shaped keying bands to

prevent connecting the wrong wires to your module.

Key positions on the module that correspond to unkeyed positions

on the RTB. For example, if you key the first position on the module,

leave the first position on the RTB unkeyed.

1. To key the module, insert the U-shaped band, as shown.

2. Push the band until it snaps in place.

3. To key the RTB or IFM, insert the wedge-shaped tab with

rounded edge first, as shown.

4. Push the tab until it stops.

Reposition the tabs to rekey future module applications.

20850–M

U-shaped

bands

20851–M

Wedge-shaped tab

AB PLCs

10 ControlLogix Voltage/Current Output Module

Publication 1756-IN016B-EN-P - November 2003

Wire the Removable Terminal Block

Wire the RTB with a 5/16 inch (8mm) maximum flat-bladed

screwdriver before installing it onto the module.

Be sure that power is removed or the area is nonhazardous before

proceeding.

Shielded cable is required when using this module.We recommend

using Belden 8761 cable to wire the RTB. The RTB terminations can

accommodate #22 - 14 AWG shielded wire.

Connect grounded end of the cable

1. Prepare one end of the cable for grounding.

2. Ground the drain wire. We recommend grounding the drain

wire at the field device as shown below.

3. Connect the insulated wires to the field device.

WARNING When you connect or disconnect the Removable

Terminal Block (RTB) while field side power is on, an

electrical arc can occur. This could cause an explosion in

hazardous location installations.

A. Remove a length

of cable jacket

from the

connecting cable.

B. Pull the foil shield

and bare drain

wire from the

insulated wire.

C. Twist the foil shield

and drain wire

together to form a

single strand.

D. Attach a ground

lug and apply heat

shrink tubing to the

exit area.

20104-M

Field

Device

Drain wire

43183

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