Allen-Bradley FLEX Ex 1797-OE8 User manual

Installation Instructions
FLEX Ex 8 Output and HART Analog Modules
Catalog Numbers 1797-OE8, 1797-OE8H
Topic Page
Important User Information
3
Environment and Enclosure 4
Prevent Electrostatic Discharge 5
Removal and Insertion Under Power 5
European Communities (EC) Directive Compliance 6
Installation in Zone 1 8
Installation in Zone 22 8
Install the Module 9
Wire the Module to a 1797-TB3 or 1797-TB3S Terminal Base Unit 11
Ground the Module 13
Outputs 14
1797-OE8 Input Map (Read Words) 16
1797-OE8H Input Map (Read Words) 16
1797-OE8 Output Map (Write Words) 17
1797-OE8H Output Map (Write Words) 17
1797-OE8H Configuration Map 18
Data Format - Write Words 2 and 3 19
Cyclic HART Input DataCyclic HART Input Data 20

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Publication 1797-IN003J-EN-P - August 2017
HART Input Data 20
HART Input Data Descriptions 24
HART Read Back Threshold 25
1797-OE8 Configuration Map 26
1797-OE8H Extended Configuration Data Table 27
1797-OE8H Secondary Master Enable (SME)/ Primary Master Inhibit (PMI) 27
Field Descriptions 28
1797-OE8 FLEX Ex Output Module Operation 33
Cooperative Operation of the Adapter and the 1797-OE8H Output Module 34
Specifications 35
Topic Page

FLEX Ex 8 Output and HART Analog Modules 3
Publication 1797-IN003J-EN-P - August 2017
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) 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, and recognize the consequence
SHOCK HAZARD
Labels may be located on or inside the equipment to alert people that dangerous
voltage may be present.
BURN HAZARD
Labels may be located on or inside the equipment to alert people that surfaces may be
dangerous temperatures.

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Publication 1797-IN003J-EN-P - August 2017
Environment and Enclosure
ATTENTION
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.
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.

FLEX Ex 8 Output and HART Analog Modules 5
Publication 1797-IN003J-EN-P - August 2017
Prevent Electrostatic Discharge
Removal and Insertion Under Power
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.
• Post a sign near these modules:
Attention! Avoid electrostatic charging.
ATENÇÃO! PREVENIR CONTRA O ACÚMULO DE CARGA
ELETROSTÁTICA
For your convenience, a sign that can be cut out and posted is included
in this publication.
WARNING
These modules are designed so you can remove and insert them under
power. However, take special care when removing or inserting modules in an
active process. I/O attached to any module being removed or inserted can
change states due to its input/output signal changing conditions.
If you insert or remove the terminal base 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.

6FLEX Ex 8 Output and HART Analog Modules
Publication 1797-IN003J-EN-P - August 2017
European Communities (EC) Directive Compliance
If these products have the CE mark they are approved for installation within
the European Union and EEA regions. They have been designed and tested
to meet the following directives.
EMC Directive
These products are tested to meet the Council Directive 2014/30/EU by
applying the following standards:
• EN 61000-6-4:2007, Electromagnetic Compatibility (EMC) - Part 6-4:
Generic Standard for Industrial Environments (Class A)
• EN 61000-6-2:2005, Electromagnetic Compatibility (EMC) - Part 6-2:
Generic Standards - Immunity for Industrial Environments
• EN 61326-1:2013 (Industrial), Electrical Equipment For
Measurement, Control, and Laboratory Use - Industrial EMC
Requirements
European Hazardous Location Approval
The following applies to products marked II (1)2 G and
II (1) D
•Are Equipment Group II, Equipment Category (1)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. See the EC Declaration of Conformity at
http://www.rockwellautomation.com/products/certification
for details.
•The type of protection is “Ex ib[ia] IIC T4” and “[Ex iaD]” according
to EN 60079-11.
•Comply to Standards EN 60079-0:2006, EN 60079-11:2007,
EN 60079-26:2004, EN 61241-0:2006, and EN 61241-11:2006,
reference certificate number DMT 00 ATEX E 042 X.

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•Are intended for use in areas in which explosive atmospheres caused
by gases, vapors, mists, or air are likely to occur occasionally. Such
locations correspond to Zone 1 or 2 classification according to ATEX
directive 2014/34/EU.
IEC Hazardous Location Approval
The following applies to products with the IECEx certification:
•Are intended for use in areas in which explosive atmospheres caused
by gases, vapors, mists, or air are likely to occur only infrequently and
for short periods. Such locations correspond to Zone 1 or 2
classification to IEC 60079-0.
•The type of protection is “[Zone 0] Ex ib[ia] IIC T4” according to
IEC 60079-11 and “[Ex iaD]” according to IEC 60079-11.
•Comply to Standards IEC 60079-0:2004, IEC 60079-11:2006,
IEC 60079-26:2004, IEC 61241-0:2004, and IEC 61241-11:2005,
reference IECEx certificate number IECEx BVS 09.0023X.
Special Conditions for Safe Use:
The intrinsically safe circuits (ch0 to ch7) may extend into areas with
combustible dust. However it shall be ensured that the apparatus, connected
to these intrinsically safe circuits, meet the requirements for category 1D
respectively 2D and are marked accordingly.
All the other intrinsically safe circuits may also extend into areas with
combustible dust. However it shall be ensured that the apparatus, connected
to these intrinsically safe circuits, meet the requirements for category 2D and
are marked accordingly.
The module may only be used with the terminal base type 1797-TB3/* or
type 1797-TB3S/* (DMT 98 ATEX E012U)
A warning label shall be installed in immediate proximity of these apparatus:
ATTENTION! Avoid electrostatic charging.

8FLEX Ex 8 Output and HART Analog Modules
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Installation in Zone 1
These modules must not be exposed to the environment. Provide a suitable
metal enclosure. This module has a protection factor of IP20.
Installation in Zone 22
When the module is installed in Zone 22, the following cabinets must be used:
IVK-ISRPI-V16LC; IVK-ISRPI-V8HYW; or IVK-ISRPI-V8LC. These
cabinets can be purchased from:
Pepperl+Fuchs GmbH
Konigsberger Allee 85-87, D-68307
Mannheim, Germany
Attn: PA Sales Dept.
Kirsten Becker
Telephone [phone]
www.pepperl-fuchs.com
The IS-RPI cabinets (type IVK2-ISRPI-V8LC, IVK2-ISRPI-V8HYW, or
IVK2-ISPRI-V16LC) ensures the basic protection for the intrinsically safe
apparatus of the FLEX Ex system for use in Zone 22. It corresponds with
category 3D according to RL 94/9 EG and with the type label marked with
the following information:
Pepperl+Fuchs GmbH
68307 Mannheim
IVK2-ISRPI-V8LC (or IVK2-ISRPI-V8HYW or
IVK2-ISRPI-V16LC)
II 3 D Ex tD A22 IP54 T70 °C
CE
Serial (manufacturing) number
Model year
WARNING
These modules cannot be used in an intrinsically safe
environment after they have been exposed to nonintrinsically
safe signals.

FLEX Ex 8 Output and HART Analog Modules 9
Publication 1797-IN003J-EN-P - August 2017
Install the Module
Read this for information about how to install the module which must be
used with a 1797-TB3 or 1797-TB3S intrinsically safe terminal base unit.
ATTENTION
This equipmment is considered Group 1, Class A industrial equipement
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 accessiblity 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 infromation regarding specific enclosure type ratings
that are required to comply with certain productsafety certifications.
ATTENTION
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.
7
1
8
2
6
5
Labelhereorunderhere
4
3
41439

10 FLEX Ex 8 Output and HART Analog Modules
Publication 1797-IN003J-EN-P - August 2017
To install the module on a 1797 terminal base, see the figure and complete the
following.
1. Rotate the keyswitch (1) on the terminal base (2) clockwise to position
4 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 or adapter.
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 intrinsically safe terminal base
unit to the right of this terminal base unit if required.
ATTENTION
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.
IMPORTANT
Do not change the position of the keyswitch after wiring the terminal base
unit.
IMPORTANT
You cannot install the module unless the connector is fully extended.
IMPORTANT
Make certain that you only connect terminal base units to other intrinsically
safe system modules or adapters to maintain the integrity of the intrinsically
safe backplane.