Rockwell Automation 1794-IB8, 1794-IB16, 1794-IB16K, 1794-IB32 User Manual

Installation Instructions

WARNING

IMPORTANT

ATTENTION

WARNING

FLEX I/O Digital Input Modules

Cat. Nos. 1794-IB8, -IB16, -IB16K, and -IB32

(Modules with a K in the last position of the catalog number are conformally coated to meet noxious gas requirements of ISA/ANSI-71.040 1985 Class G3 Environment.)

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 Automation sales office or online at http://www.literature.rockwellautomation.com) 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.

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.

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

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

SGI-1.1 available from your local Rockwell

Prevent Electrostatic Discharge

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.

European Hazardous Location Approval

The following input modules are European Zone 2 approved: 1794-IB8, -IB16, and

-IB16K.

European Zone 2 Certification (The following applies when the product bears the Ex Marking)

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 the design and construction of Category 3 equipment intended for use in 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.

Observe the following additional Zone 2 certification requirements.

• 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 Allen-Bradley.

• 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

• This equipment must be used only with ATEX certified backplanes.

• Secure any external connections that mate to this equipment by

using screws, sliding latches, threaded connectors, or other means provided with this product.

• Do not disconnect equipment unless power has been removed or

the area is known to be nonhazardous.

Environment and Enclosure

This equipment is intended for use in a Pollution Degree 2 industrial environment, in overvoltage Category II applications (as defined in IEC 60664-1), at altitudes up to 2000 m (6562 ft) without derating.

This equipment is considered Group 1, Class A industrial equipment according to IEC/CISPR 11. Without appropriate precautions, there may be difficulties with 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 injury resulting from accessibility to live parts. The enclosure must have suitable 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 non-metallic. 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:

• Industrial Automation Wiring and Grounding Guidelines,

Allen-Bradley publication requirements.

• NEMA Standards 250 and IEC 60529, as applicable, for explanations

of the degrees of protection provided by different types of enclosure.

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.

1770-4.1, for additional installation

Publication 1794-IN093C-EN-P - December 2009

WARNING

AVERTISSEMENT

ATTENTION

WARNING

North American Hazardous Location Approval

The following input modules are North American Hazardous Location approved: 1794-IB8, -IB16, -IB16K, and -IB32.

The following information applies when operating this equipment in hazardous locations:

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.

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, Di vision

•If this product contains batteries,

they must only be changed in an area known to be nonhazardous.

Informations sur l’utilisation de cet équipement en environnements dangereux:

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.

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.

To comply with the CE Low Voltage Directive (LVD), this equipment must be powered from a source compliant with the following: Safety Extra Low Voltage (SELV) or Protected Extra Low Voltage (PELV).

Compatibility

The following communication adapters are required to ensure compatibility with the 1794-IB32:

Remote I/O 1794-ASB series E or later

ControlNet 1794-ACN15 series C, firmware revision 4.1 or later

DeviceNet 1794-ADN Series B, firmware revision 2.4 or greater for out-of-box

Ethernet 1794-AENT series A, firmware revision 2.4 or later PROFIBUS 1794-APB series A, version 1.1 of the GSD file

ControlLogix Family RSLogix5000 programming software, version 11 or later

1794-ASB2 series D or later

1794-ACNR15 series C, firmware revision 4.1 or later

compatibility

(You can download the GSD file at www.ab.com/networks/gsd.)

Install Your Digital Input Module

The module mounts on a 1794 terminal base.

During mounting of all devices, be sure that all debris (such as metal chips and wire strands) is kept from falling into the module. Debris that falls into the module could cause damage on power up.

1. Rotate the keyswitch (1) on the terminal base (2) clockwise to position 2 as

required for this type of module.

2. Make certain the flexbus connector (3) is pushed all the way to the left to connect with the neighboring terminal base/adapter. You cannot

install the module unless the connector is fully extended.

3. Make sure the pins on the bottom of the module are straight so they will

align properly with the connector in the terminal base.

If 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.

4. Position the module (4) with its alignment bar (5) aligned with the groove (6) on the terminal base.

5. Press firmly and evenly to seat the module in the terminal base unit. The module is seated when the latching mechanism (7) is locked into the module.

Connect Wiring for the 1794-IB8, -IB16, and -IB16K using a 1794-TB3 or -TB3S

1. Connect individual input wiring to numbered terminals on the 0…15 row (A) as indicated in the following table on the next page.

2. Connect the associated +V DC power lead of the input device to the corresponding terminal on the 34…51 row (C) for each input as indicated in the following table. (The +V power terminals of row (C) are internally connected together.)

3. Connect the associated input common (3-wire devices only) to the corresponding terminal on the 16…33 row (B) for each input as indicated in the following table. (Commons are internally connected together.)

4. Connect +V DC power to terminal 34 on the 34…51 row (C).

5. Connect DC common to terminal 16 on the 16…33 row (B).

6. If daisychaining power to the next terminal base, connect a jumper from

terminal 51 (+V DC) on this base unit to terminal 34 on the next base unit.

7. If continuing DC common to the next base unit, connect a jumper from terminal 33 (common) on this base unit to terminal 16 on the next base unit.

Publication 1794-IN093C-EN-P - December 2009

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