Allen-Bradley FLEX Ex 1797-OB4D User manual

Publication 1797-5.6 - June 2011
Installation Instructions
FLEX Ex I/O 24V DC 4 Non-Isolated Source
Output Module
Catalog Number 1797-OB4D
Topic Page
Important User Information 2
Installation in Zone 1 5
Installation on Zone 22 5
Module Installation 3
Outputs 8
Wire to a 1797-TB3 or 1797-TB3S Terminal Base Unit 9
Ground the Module 11
Indicators 11
Memory Mapping 12
Field Descriptions 12
Repair 14
Specifications 15
Cooperative Operation of the ControlNet Ex Adapter and FLEX Ex
Output Modules
17
FLEX Ex Output Module Operation 18
Entity Parameters 19
Output Voltage versus Current Capability 29

2FLEX Ex I/O 24V DC 4 Non-Isolated Source Output Module
Publication 1797-5.6 - June 2011
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.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.

FLEX Ex I/O 24V DC 4 Non-Isolated Source Output Module 3
Publication 1797-5.6 - June 2011
Module Installation
Component identification
1FlexBus connector 5Terminal base unit
2Latching mechanism 6Alignment groove
3Keyswitch 7Alignment bar
4Cap plug 8Module
3
5
1
8
7
6
2
Label here or under here
4
40231

4FLEX Ex I/O 24V DC 4 Non-Isolated Source Output Module
Publication 1797-5.6 - June 2011
Install the Module
This module must be used with a 1797-TB3 or 1797-TB3S intrinsically safe
terminal base unit.
1. Rotate keyswitch (3) on terminal base unit (5) clockwise to position 7
as required for this type of module.
Do not change the position of the keyswitch after wiring the
terminal base unit
2. Make certain the FlexBus connector (1) 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 unit.
4. Position the module (8) with its alignment bar (7) 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 (2) is locked into
the module.
ATTENTION
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.

FLEX Ex I/O 24V DC 4 Non-Isolated Source Output Module 5
Publication 1797-5.6 - June 2011
6. 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.
7. Remove the cap plug (4) and attach another intrinsically safe terminal
base unit to the right of this terminal base unit if required.
Installation in Zone 1
This module must not be exposed to the environment and must have a
suitable metal enclosure. It has a protection factor of IP20.
Installation on 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
Lilienthalstrasse 200
68307 Mannheim, Germany
Attn: PA Sales Dept.
Kirsten Becker
Telephone [phone]
www.pepperl-fuchs.com
WARNING
This module cannot be used in an intrinsically safe environment after it has
been exposed to nonintrinsically safe signals.
41307

6FLEX Ex I/O 24V DC 4 Non-Isolated Source Output Module
Publication 1797-5.6 - June 2011
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 X
CE
Serial (manufacturing) number
Model
Electrostatic Charge
Protect the system against electrostatic charge. Post a sign near this module:
WARNING Avoid electrostatic charging.
ADVERTÊNCIA! PREVENIR CONTRA O ACÚMULO DE CARGA
ELETROSTÁTICA.
For your convenience, a sign that can be cut out is included in this installation
instruction.

FLEX Ex I/O 24V DC 4 Non-Isolated Source Output Module 7
Publication 1797-5.6 - June 2011
Removal and Insertion Under Power
European Communities (EC) Directive Compliance
If this product has the CE mark it is approved for installation within the
European Union and EEA regions. It has been designed and tested to meet
the following directives.
EMC Directive
These products are tested to meet the Council Directive 2004/108/EC 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
•EN61326-1:2006 (Industrial), Electrical Equipment For
Measurement, Control, and Laboratory Use - Industrial EMC
Requirements
ATEX Directive
These products are tested in conjunction with associated I/O modules to
meet the Council Directive 94/9/EC (ATEX) Equipment and Protective
Systems Intended for Use in Potentially Explosive Atmospheres by applying
the following standards:
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.

8FLEX Ex I/O 24V DC 4 Non-Isolated Source Output Module
Publication 1797-5.6 - June 2011
•EN60079-11:2007, Explosive atmospheres - Part 11 : equipment
protection by intrinsic safety "i"
•EN60079-0:2006, Electrical apparatus for explosive gas atmospheres -
Part 0 : general requirements
•EN 60079-26 : 2004, Electrical apparatus for explosive gas
atmospheres - Part 26 : construction, test and marking of Group II
Category 1 G electrical apparatus
•EN61241-0 : 2006, Electrical apparatus for use in the presence of
combustible dust - Part 0: General requirements
•EN61241-11:2006, Electrical apparatus for use in the presence of
combustible dust – Part 11: Protection by intrinsic safety 'iD'
Outputs
Each output can operate a digital field device.
Do not apply any nonintrinsically safe signals to this module.
When using an intrinsically safe electrical apparatus according to EN50020,
the European Community directives and regulations must be followed.
The channels in this module are electrically connected to each other.
FlexBus Bus
uC
+V
-V
+
-
Power
supply
Valve
Audible
alarm
Solenoid
40069

FLEX Ex I/O 24V DC 4 Non-Isolated Source Output Module 9
Publication 1797-5.6 - June 2011
Wire to a 1797-TB3 or 1797-TB3S Terminal Base Unit
Connect wiring to the terminal base as shown below.
1. Connect the individual output wiring to (+) terminals (0, 4, 8, 12) on
the 0…15 row (A) as indicated in the table below.
2. Connect the associated output to the corresponding (-) terminal (1, 5,
9, 13) on the 0…15 row (A) for each output as indicated in the table
below.
3. Connect +V DC power to terminal 34 on the 34…51 row (C).
4. Connect -V to terminal 35 on the 34…51 row (C).
No connections allowed to terminals 2, 3, 6, 7, 10, 11, 14, 15, 17 to 32, 36, 37, 38, 39,
46, 47, 48, 49.
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49
32 33
50 51
CH 0 CH 1 CH 2 CH 3
+_+_+_+_
+V-V+V-V
40068A
Row A
Row B
Row C

10 FLEX Ex I/O 24V DC 4 Non-Isolated Source Output Module
Publication 1797-5.6 - June 2011
5. 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.
6. 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.
WARNING
Make certain that you power this module with an intrinsically safe power
supply. Do not exceed the values listed in the specifications for this 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.
Module Wire Connections
Output Output + Output -
Output 0 A-0 A-1
Output 1 A-4 A-5
Output 2 A-8 A-9
Output 3 A-12 A-13
+V Terminals C-34 and C-50
-V Terminals C-35 and C-51
ATTENTION
Do not use the unused terminals on this terminal base unit. Using
these terminals as supporting terminals can result in damage to the
module or unintended operation of your system, or both.