Allen-Bradley ControlNet FLEX Ex 1797-BCNR User manual

Publication 1797-IN536E-EN-P - August 2017
Installation Instructions
FLEX Ex Redundant ControlNet Barrier Module
Cat. No. 1797-BCNR
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.

2FLEX Ex Redundant ControlNet Barrier Module
Publication 1797-IN536E-EN-P - August 2017
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
•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.
Important User Information
43476
1
23
4
In Out
Out
Channel A
Channel B
In

FLEX Ex Redundant ControlNet Barrier Module 3
Publication 1797-IN536E-EN-P - August 2017
Use the redundant ControlNet™ barrier module to interconnect between
ControlNet and ControlNet Ex™ networks.
ATTENTION
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 publication 60664-1), at altitudes up to 2000
meters without derating.
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.
NOTE: See NEMA Standards publication 250 and IEC
publication 60529, as applicable, for explanations of the degrees
of protection provided by different types of enclosure. Also, see
the appropriate sections in this publication, as well as the
Allen-Bradley publication 1770-4.1 ("Industrial Automation
Wiring and Grounding Guidelines"), for additional installation
requirements pertaining to this equipment.
Component Identification
1ControlNet Channel A In
2ControlNet Channel B In
3ControlNet Ex Channel B Out
4ControlNet Ex Channel A Out

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Publication 1797-IN536E-EN-P - August 2017
Product Features
•Provides for a direct connection to the ControlNet coax into
hazardous areas
•Can be mounted in a nonhazardous (safe) area
•Supports up to 10 adapters at 250 meters or 2 adapters at 500 meters
A functional illustration of the FLEX Ex Barrier Module is shown below.
Safe Area
ControlNet A
ControlNet B
Hazardous Area
ControlNet Ex TAP
(e.g., 1797-TPR)
ControlNet Ex
TAP
ControlNet Ex
Adapter
43464
ControlNet barrier
PA
ControlNet Ex TAP
(e.g., 1797-TPR)
ControlNet Ex TAP
(e.g., 1797-TPR)

FLEX Ex Redundant ControlNet Barrier Module 5
Publication 1797-IN536E-EN-P - August 2017
Mounting the Barrier on a DIN Rail Before Installing Modules
The 1797-BCNR module mounts on a DIN rail.
1. Position the ControlNet Ex barrier module (A) on a 35 x 7.5mm DIN
rail (B) (A-B pt. no. 199-DR1) at a slight angle.
2. Hook the lip on the rear of the barrier (A) onto the top of the DIN
rail (B), and rotate the module onto the rail.
3. Press the barrier module down onto the DIN rail until flush.
4. The locking tab (C) should snap into position and lock the barrier
module to the DIN rail.
5. If the barrier module does not snap into position, use a screwdriver or
similar device to move the locking tab down while pressing the barrier
module flush onto the DIN rail. Release the locking tab to lock the
module in place.
6. If necessary, push up on the locking tab to lock.
7. Make certain that you only connect the ControlNet Ex side of the
1797-BCNR to 1797 ControlNet taps with either a 1797-ACNR15 or
a 1797-TCAP attched.
WARNING
The 1797-BCNR cannot be used in an intrinsically safe
environment after the ControlNet Ex connections have been
exposed to non-intrinsically safe signals.
In Out
Out
Channel A
Channel B
In
A
B
C43477
B

6FLEX Ex Redundant ControlNet Barrier Module
Publication 1797-IN536E-EN-P - August 2017
Installation in Zone 2
This 1797-BCNR must not be exposed to the environment. This barrier
module has a protection factor of IP20. Mount the 1797-BCNR inside an
enclosure with a protection class IP54.
Installation in Zone 22
When the 1797-BCNR is installed in Zone 22, the following cabinets must be
used: IVK2-ISRPI-V16LC; IVK2-ISRPI-V8HYW; or IVK2-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
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 IS-RPI 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

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Electrostatic Charge
Protect the system against electrostatic charge. Post a sign near this barrier
module: Attention! Avoid electrostatic charge. For your convenience, a
sign which can be cut out is included at the end of this installation instruction.
European Community (EC) Directive Compliance
If this product has the CE mark it is approved for installation within the
European Community or EEA regions. It has been designed and tested to
meet the following directives.
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, Electrical Equipment For Measurement, Control,
and Laboratory Use - Industrial EMC Requirements
ATTENTION
Preventing 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.
•If available, use a static-safe workstation.
•When not in use, store the equipment in appropriate
static-safe packaging.

8FLEX Ex Redundant ControlNet Barrier Module
Publication 1797-IN536E-EN-P - August 2017
European Hazardous Location Approval
The following applies to products marked II (1)2 G
•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 ia ib IIC” according to EN 60079-11.
•Comply to Standards EN 60079-0:2006, EN 60079-11:2007, EN
60079-25:2004, and EN 60079-26:2004, reference certificate number
DMT 99 ATEX E 065 X.
•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 “[Ex ib] IIC” according to IEC 60079-11.
•Comply to Standards IEC 60079-0:2004, IEC 60079-11:2006, and
IEC 60079-25:2003, reference IECEx certificate number
IECEx BVS 09.0020X.
Special Conditions for Safe Use:
In immediate proximity of the modules of the system a warning marking has
to be affixed: Warning - Avoid electrostatic charging - see instructions.

FLEX Ex Redundant ControlNet Barrier Module 9
Publication 1797-IN536E-EN-P - August 2017
UL, C-UL Compliance
If this product has the UL/C-UL mark, it has been designed, evaluated,
tested, and certified to meet the following relevant standards:
•UL 913, 1988, Intrinsically Safe Apparatus and Associated Apparatus
for Use in Class I, II, and III Division 1, Hazardous (Classified)
Locations
•UL 1203, Explosion-Proof and Dust-Ignition-Proof Electrical
Equipment for Use in Hazardous (Classified) Locations
•UL 2279, Electrical Equipment for Use in Class I, Zone 0, 1, and 2
Hazardous (Classified) Locations
•UL 61010, UL Standard for Safety Electrical Equipment For
Measurement, Control, and Laboratory Use; Part 1: General
Requirements
•CSA C22.2 No. 157-92, Intrinsically Safe and Non-Incendive
Equipment for Use in Hazardous Locations
•CSA C22.2 No. 30-M1986, Explosion-Proof Enclosures for Use in
Class I Hazardous Locations
•CSA-E79-0-95, Electrical Apparatus for Explosive Gas Atmospheres,
Part 0: General Requirements
•CSA-E79-11-95, Electrical Apparatus for Explosive Gas
Atmospheres, Part 11: Intrinsic Safety “i”
•CSA C22.2 No. 14-95, Industrial Control Equipment
Inputs/Outputs
Do not apply any non-instrinsically safe signals to the FLEX Ex side of the
1797-BCNR.

10 FLEX Ex Redundant ControlNet Barrier Module
Publication 1797-IN536E-EN-P - August 2017
When used as an associated apparatus according to EN 60079-11, the
European directives and regulations must be followed.
Wiring
1. Connect the ControlNet Ex trunk cable to connector, terminal B
after removing the insulator boot.
2. Connect the redundant ControlNet Ex trunk cable to connector C
after removing the insulator boot.
3. Connect the ControlNet trunk cable to terminal A.
IMPORTANT
Only remove the 1797-BCNR covers if the ControlNet Ex tap
drop cable is installed.
43465
ControlNet
1797-BCNR
ControlNet Ex
IS
In Out
Out
Channel A
Channel B
In
AB
C
D
30502-mdin
E
Redundant cables