Rockwell Automation 1797-TB3S User Manual
Installation Instructions
FLEX Ex Terminal Base Units
Catalog Numbers 1797-TB3 and 1797-TB3S
Contents
For Information About See Page
Important User Information 2
Description 2
Installation in Zone 1 5
Installation in Zone 22 5
Electrostatic Charge 6
European Community Directive Compliance 6
Inputs and Outputs 7
Wire the Terminal Base Units 8
Mount on a DIN Rail 10
Mounting Dimensions 13
About the Mounting Kit 15
Repair 15
Specifications - 1797-TB3 and 1797-TB3S Terminal Base Units 16
UL, C-UL Certification 18
FM Certification 19
Publication 1797-5.1 - June 2010
2 FLEX Ex Terminal Base Units
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
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.
Labels may be located on or inside the equipment to alert people that dangerous voltage may be
present.
http://www.literature.rockwellautomation.com)
Labels may be located on or inside the equipment to alert people that surfaces may be
dangerous temperatures.
Description
The 1797-TB3 and 1797-TB3S terminal bases have 36 wiring connections to
and from a plug-in module. The use of each terminal depends on the module
mounted in the base.
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1797-5.1 - June 2010
FLEX Ex Terminal Base Units 3
0 12345 67 89101112131415
16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33
34 35 36 37 38 39 40 41 42 43 45 46 47 48 49 5044 51
1
5
6
7
8
9
10
12
Label
11
2
3
4
Only remove this cover plug if
connecting another terminal base.
41251
Only remove this cover plug if
connecting another terminal base.
41253
Both terminal bases are equipped with a factory-installed tab cover for the
backplane bus connection. The tab cover may be removed only when the
terminal base is connected to other terminal bases.
1797-TB3 Screw-cage Terminal Base
1797-TB3S Spring-clamp Terminal Base
11
10
1
5
6
7
8
9
4
3
12
2
Label
Component Identification
1 Female flexbus connector 6, 7, 8Input/output terminal strips for connecting
2 Terminal base unit 9 Locking tab
3 Male flexbus connector 10 Module locking latch
4 Keyswitch - Set to the position
required for the installed module
5 Mounting holes for panel mounting 12 96-pin female I/O connector
input/output wiring, -V, +V connections
11 Cover plug for male flexbus connector
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1797-5.1 - June 2010
4 FLEX Ex Terminal Base Units
ATTENTION
41307
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.
You will need to rotate the keyswitch (4) to the correct position depending on
the I/O module. Refer to the I/O module’s installation instructions for more
information.
Do not change the position of the keyswitch after wiring the terminal
base.
Make certain that you only connect terminal bases to other intrinsically safe
system modules or adapters to maintain the integrity of the intrinsically-safe
backplane.
Do not remove the rightmost terminal base flexbus cover (11).
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FLEX Ex Terminal Base Units 5
WARNING
Installation in Zone 1
The terminal bases must not be exposed to the environment. Provide a
suitable metal enclosure. The terminal bases have a protection factor of IP20.
Do not remove the flexbus cover on the rightmost terminal base.
The terminal bases cannot be used in an intrinsically safe
environment after having been exposed to nonintrinsically safe
signals.
Installation in Zone 22
When the terminal bases are 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 +49 776 1298
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
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1797-5.1 - June 2010
6 FLEX Ex Terminal Base Units
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 and posted is included in this
installation instruction.
European Community Directive Compliance
If these products have the CE mark they are approved for installation within
the European Community or EEA regions. They have 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:
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
Publication
1797-5.1 - June 2010
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