Rockwell Automation Allen-Bradley 1718-AENTR User manual

Installation Instructions

Original Instructions

1718 Ex I/O

Catalog Numbers:

1718-AENTR, 1718-IJ, 1718-OB2, 1718-OB2L, 1718-IBN8, 1718-

IBN8B, 1718-IT4B, 1718-IR4B, 1718-IF4HB, 1718-CF4H, 1718-PSDC, 1718-A20, 1718-A10,

1718-CBL3, 1718-ARM

Topic Page

Important User Information 2

European Hazardous Location Approval 4

IEC Hazardous Location Approval 6

Enclosures 8

Chassis 9

Mount the Chassis 9

Insert and Remove Modules 15

Wire the Chassis Ex e Terminals 11

Output Deactivation Feature 12

Insert and Remove Modules 15

Field Wiring 19

Install FieldWiring for Intrinsically Safe Circuits 22

Line Fault Detection 24

EtherNet/IP Connection 26

System Expansion 31

2Rockwell Automation Publication 1718-IN001A-EN-E - June 2020

1718 Ex I/O

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 that are 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.

Rockwell Automation Publication 1718-IN001A-EN-E - June 2020 3

1718 Ex I/O

Enclosure Considerations

The 1718 Ex I/O distributed I/O is specially designed for operation within an

enclosure or within a monitored environment. Observe the requirements for

enclosures and the installation conditions set out in the chapter on safety of the

1718 Ex I/O User Manual, publication number 1718-UM001.

Prevent Electrostatic Discharge

WARNING: Risk of explosion.

Electrostatic charging of plastic components can lead to discharge, which can

cause explosive mixtures to ignite.

• Avoid electrostatic charges. For example, plastic parts must always be cleaned

using a damp cloth, and never using a dry cloth.

• Affix a warning sign that is easily recognizable to the inside of the enclosure. The

sign must read as follows: "WARNING — avoid electrostatic charge".

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.

At the end of its life, this equipment should be collected separately from any

unsorted municipal waste.

4Rockwell Automation Publication 1718-IN001A-EN-E - June 2020

1718 Ex I/O

European Hazardous Location Approval

The following applies to products marked II 2(1)G. Such modules:

• Are Equipment Group II, Equipment Category 2, and comply with the Essential Health and Safety

Requirements relating to the design and construction of such equipment given in Annex II to

Directive 2014/34/EU. For details, see the EU Declaration of Conformity from the 1718

Certification Bulletin, publication 1718-CT001.

• Are intended for use in areas in which explosive atmospheres caused by gases, vapors, mists, or

air are likely to occur in normal operation occasionally (see Zone 1 definition). Such locations

correspond to Zone 1 classification according to ATEX directive 2014/34/EU.

• The I/O modules have outputs leading into Category 1

[Zone 0 (gas) or Zone 20 (dust)] or Category M1 (mining)].

1718-CF4H

• Field connections and mounting: the type of protection is "II 2(1) G Ex db eb q [ia Ga] IIC Gb" and