Allen-Bradley ControlLogix 1756-PLS Bedienungsanleitung

Publication 1756-IN594A-EN-P - November 2003

Installation Instructions

ControlLogix Programmable Limit Switch Module

Catalog Number 1756-PLS

Use this document to install the ControlLogix™ Programmable Limit Switch module.

Obtain a User Manual

This product also has a user manual (publication number 1756-UM002). 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:

Prevent Electrostatic Discharge 3

Use Compatible Resolver 6

Identify the Module Components 6

Note the Power Requirements 7

Install the Module 7

Key the Module and Removable Terminal Block/Interface Module 8

Wire the Removable Terminal Block 9

Wire the Resolver Module 12

Wire the I/O Modules 13

Assemble the Removable Terminal Block and the Housing 15

Install the Removable Terminal Block onto the Module 15

Check the Status Indicators 16

Remove the Removable Terminal Block from the Module 17

Remove the Module 17

1756-PLS Specifications 18

Allen-Bradley Automation

2ControlLogix Programmable Limit Switch Module

Publication 1756-IN594A-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.

IMPORTANT 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 HAZARD 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 Programmable Limit Switch Module 3

Publication 1756-IN594A-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.

Allen-Bradley Automation

4ControlLogix Programmable Limit Switch Module

Publication 1756-IN594A-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 Programmable Limit Switch Module 5

Publication 1756-IN594A-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.

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.

Allen-Bradley Automation

6ControlLogix Programmable Limit Switch Module

Publication 1756-IN594A-EN-P - November 2003

Use Compatible Resolver

This module can only be used with the following resolvers:

•Allen-Bradley Resolver # 846-SJxxxx-R3-x (x=customer option)

For more information on how to connect the center section to Allen-Bradley

Resolver # 846-SJxxxx-R3-X, see .

Identify the Module Components

You received the following components with your order:

•1756-PLS module – Three separate sections (I/O section, resolver section

and I/O section) joined together

•Removable Terminal Block (RTB) door labels (one for each section)

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.

(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.

ControlLogix Programmable Limit Switch Module 7

Publication 1756-IN594A-EN-P - November 2003

Note the Power Requirements

This module receives power from the 1756 chassis power supply and requires 2

sources of power from the ControlLogix backplane:

•1A at 5.1V dc

•125mA at 24V dc

Add this current/power value (8.1W) to the requirements of all other modules in

the chassis to prevent overloading the power supply.

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 center 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.

Printed

Circuit

Board

41633

Locking tab

41634

Allen-Bradley Automation

8ControlLogix Programmable Limit Switch Module

Publication 1756-IN594A-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.

U-shaped

bands

41635

20851–M

Wedge-shaped tab

20851

ControlLogix Programmable Limit Switch Module 9

Publication 1756-IN594A-EN-P - November 2003

Wire the Removable Terminal Block

Separate RTBs connect wiring to each section on the module. Wire each RTB

before installing it onto the module. Use a 5/16 inch (8mm) maximum flat-bladed

screwdriver.

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

Choosing Cables

Shielded cable is required when wiring the resolver. We recommend using Alpha

cable # 6054C to wire the resolver RTB.

We recommend using nonshielded cable to wire the I/O portions of this module.

However, single conductor shielded cable should be used in extremely noisy

environments. The RTB terminations can accommodate 14-22 gauge 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

Allen-Bradley Automation

10 ControlLogix Programmable Limit Switch Module

Publication 1756-IN594A-EN-P - November 2003

If you cannot ground at the field device, follow these steps:

1. Prepare one end of the cable as shown in step 1 on page 9.

2. Ground at an earth ground on the chassis as shown below.We recommend

grounding the drain wire at the field-side. If you cannot ground at the

field-side, ground at an earth ground on the chassis as shown.

3. Connect the insulated wires to the RTB.

Connect Ungrounded End of the Cable

1. Prepare the non-grounded end of the cable.

20918-M

Connect the drain wire to a

chassis mounting tab.

Use any chassis mounting tab

that is designated as a functional

earth ground terminal. This

symbol appears near the tab.

Chassis mounting tab

Drain wire with ground lug

4M or 5M (#10 or #12)

phillips screw and star

washer (or SEM screw)

4M or 5M (#10 or

#12) star washer

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. Cut foil shield and drain wire

back to the cable casing and

apply shrink wrap, exposing

only the insulated wires.

43182

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