Rockwell Automation 1794-IE8H User Manual

Installation Instructions

FLEX I/O 8 Input HART Analog Module

Catalog Number 1794-IE8H, Series B

Topic Page

Important User Information 2 Environment and Enclosure 3 Prevent Electrostatic Discharge 4 North American Hazardous Location Approval 5 European Hazardous Location Approval 6 About the Module 7 Install the Module 7 Wire the Module 9 Ground the Module 11 Input Map 12 Configuration Map 13 Cyclic HART Input Data 17 Input Map (Series A Mode) 23 Configuration Map (Series A Mode) 24 Extended Configuration Data Table (Series A Mode) 26 Field Descriptions 27 Status Indicators 31 Specifications 32

2 FLEX I/O 8 Input HART Analog Module

WARNING

IMPORTANT

ATTENTION

SHOCK HAZARD

BURN HAZARD

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://literature.rockwellautomation.com

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, when necessary, 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 and recognize the consequences.

) describes some important differences between solid state

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Labels may be on or inside the equipment (for example, drive or motor) to alert people that dangerous voltage may be present.

Labels may be on or inside the equipment (for example, drive or motor) to alert people that surfaces may reach dangerous temperatures.

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Environment and Enclosure

ATTENTION

WARNING

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, for additional

installation requirements, Allen-Bradley publication 1770-4.1

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

the degrees of protection provided by different types of enclosure.

FLEX I/O 8 Input HART Analog Module 3

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.

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4 FLEX I/O 8 Input HART Analog Module

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.

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.

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

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FLEX I/O 8 Input HART Analog Module 5

WARNING

AVERTISSEMENT

ATTENTION

North American Hazardous Location Approval

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 prod ucts within a system, the most adverse temperature code (lowest "T" number) may be used to help determine the o verall 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, Division 2.

• 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 Cla sse I Division 2 Groupes A, B, C, D dangereux et non d angereux. Chaque produit est livré avec des marquages sur sa plaqu e d’identification qui indiquent le code de tem pérature pour les environnements dangereux. Lorsque plusieu rs 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 1, Division 2.

• S’assurer que l’environnement est classé non dangereux avant de changer les piles.

For Class I Division 2 applications, use only Class I Division 2 Listed or Recognized accessories and modules approved for use within 1794 platform.

Do not remove or replace a Terminal Base unit while power is applied. Interruption of the backplane can result in unintentional operation or machine motion.

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6 FLEX I/O 8 Input HART Analog Module

ATTENTION

WARNING

European Hazardous Location Approval

European Zone 2 Certification (The following applies when the product bears the Ex or EEx 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.

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.

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FLEX I/O 8 Input HART Analog Module 7

ATTENTION

40231

Label here or under here

About the Module

The HART analog modules can be used with ControlNet, Ethernet and Profibus-DP (1794-APBDV1 only) adapters. When using the Series B module with a Series B profile, you must have a ControlNet adapter Revision 5.1 or higher or an Ethernet adapater Revision 4.2 or higher.

For this scenario (Series A profile with a Series B Module), the data maps (input, configuration and extended configuration) are designated as Series A Mode. Note, all other data maps are for a Series B module with a Series B profile.

Only use the series A configuration when replacing a series A module with a series B module. If you access the Series A configuration while using the module as a series B unpredictably operation of the module may occur.

Install the Module

Read this for information about how to install the module. The module must be used with a 1794-TB3G or 1794-TB3GS terminal base unit.

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

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8 FLEX I/O 8 Input HART Analog Module

ATTENTION

IMPORTANT

41307

Do not remove or replace a Terminal Base unit while power is applied. Interruption of the backplane can result in unintentional operation or machine motion.

You must disable keying in your profile when replacing a series A module with a series B module.

To install the module on a 1794 terminal base, refer to the figure and complete the following.

1. Rotate the keyswitch (1) on the terminal base (2) clockwise to position 3 as required for this type of module.

Do not change the position of the keyswitch after wiring the terminal base unit.

2. Make sure the flexbus connector (3) is pushed all the way to the left to connect with the neighboring terminal base or 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 align properly with the connector in the terminal base.

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, noting that the module is seated when the latching mechanism (7) is locked into the module.

6. Remove cap plug (8) and attach another terminal base unit to the right of this terminal base unit if required.

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FLEX I/O 8 Input HART Analog Module 9

WARNING

44861

Wire the Module

If you connect or disconnect wiring while the field-side 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.

To connect two-wire transmitter devices for 1794-TB3G and 1794-TB3GS bases, refer to the tables and figure and complete the following.

Module Wiring

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

sig sig

Ch0 Ch1 Ch3Ch2

18 19 20 21 22 23 24 25 26 27 28 29 30 31 32

sig

Ch4

36 37 38 39 40 41 42 43 44 45 46 47 48 49

+V COM

24V DC Supply Out

+24V DC = Terminals C-34 and C-50 COM = C-35 and C-51 NC = No connection For daisy-chaining : Supply in C-34 (+V) and C-35 (COM) Supply out C-50 (+V) and C-51 (COM)

sig

Ch5

sig

Ch6

sig

Ch7

+V COM

24V DC Supply Out

(1794-TB3G shown)

1. Connect the individual input wiring to (+) terminals (0, 4, 8, 12) on the 0 to 15 row (A) and on the 16 to 33 row (B) (terminals 17, 21, 25,

29) as indicated in the table Wire Connections.

2. Connect the associated input to the corresponding (sig) terminal (1, 5, 9, 13) on the 0 to 15 row (A), and on the 16 to 33 row (B) (terminals 18, 22, 26, 30) for each input as indicated in the table Wire Connections.

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10 FLEX I/O 8 Input HART Analog Module

ATTENTION

3. Refer to the Figure for other configurations.

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

5. Connect -V to terminal 35 on the 34 to 51 row (C).

6. If continuing power to the next terminal base unit, connect a jumper

from terminal 50 (+V) on this base unit to terminal 34 on the next base unit. If continuing common to the next terminal base unit, connect a jumper from terminal 51 (-V) on this base unit to terminal 35 on the

next base unit.

The 1794-IE8H module shall be used only with Listed Allen-Bradley (Rockwell Automation) Power Supply (catalog number 1794-PS13) or Listed Class 2 source.

To reduce susceptibility to noise, power analog modules and digital modules from separate power supplies.

Wire Connections

Input Input

Source

Input 0 A-0 A-1 A-2 Input 4 B-17 B-18 B-19 Input 1 A-4 A-5 A-6 Input 5 B-21 B-22 B-23 Input 2 A-8 A-9 A-10 Input 6 B-25 B-26 B-27 Input 3 A-12 A-13 A-14 Input 7 B-29 B-30 B-31 +V Terminals 34 and 50

-V Terminals 35 and 51

Input Signal

Input Return

Input Input

Source

Input Signal

Input Return

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FLEX I/O 8 Input HART Analog Module 11

IMPORTANT

44862

43852

HART Modem

1794-IE8H/B

Bus

Flexbus

10 Ω

23.7 V

273 Ω

-V

4...20 mA

sig

Xmit

4...20 mA Xmit

Ground the Module

All I/O wiring must use shielded wire. Shields must be terminated external to the module, such as bus bars and shield-terminating feed-throughs.

Inputs

Each input can be operated from an analog field device signal.

The channels in these modules are electrically connected to each other and have a common plus-line.

When interconnecting several lines, you must consider the total accumulated power.

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