FLEX I/O Digital Input/Output Modules
Cat. No. 1794-IB10XOB6, 1794-IB16XOB16P
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.ab.com/manuals/gi) 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.
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Identifies information about practices or circumstances that can cause |
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WARNING |
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an explosion in a hazardous environment, which may lead to personal |
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injury or death, property damage, or economic loss. |
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Identifies information that is critical for successful application and |
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IMPORTANT |
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understanding of the product. |
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Identifies information about practices or circumstances that can lead to |
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ATTENTION |
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personal injury or death, property damage, or economic loss. Attentions |
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help you: |
• identify a hazard
• avoid a hazard
• recognize the consequence
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 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.
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.
Installation Instructions
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When you insert or remove the module while backplane |
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power is on, an electrical arc can occur. This could cause an |
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explosion in hazardous location installations. Be sure that |
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power is removed or the area is nonhazardous before |
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proceeding. |
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FLEX I/O is grounded through the DIN rail to chassis ATTENTION ground. Use zinc plated yellow-chromate steel DIN rail to
assure proper grounding. The use of other DIN rail materials (e.g. aluminum, plastic, etc.) that can corrode, oxidize, or are poor conductors, can result in improper or intermittent grounding.
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If you connect or disconnect wiring while the field side |
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WARNING |
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power is on, an electrical arc can occur. This could cause an |
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explosion in hazardous location installations. Be sure that |
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power is removed or the area is nonhazardous before |
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proceeding. |
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Preventing Electrostatic Discharge |
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ATTENTION |
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This equipment is sensitive to electrostatic discharge, which |
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can cause internal damage and affect normal operation. |
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Follow these guidelines when you handle this equipment: |
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• Touch a grounded object to discharge potential static. |
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Wear an approved grounding wriststrap. |
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•Do not touch connectors or pins on component boards.
•Do not touch circuit components inside the equipment.
•If available, use a static-safe workstation.
European Hazardous Location Approval
The following module is European Zone 2 approved: 1794-IB10XOB6.
European Zone 2 Certification (The following applies when the product bears the EEx Marking)
This equipment is intended for use in potentially explosive atmospheres as defined by European Union Directive 94/9/EC.
The LCIE (Laboratoire Central des Industries Electriques) certifies that this equipment 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. The examination and test results are recorded in confidential report No. 28 682 010.
Compliance with the Essential Health and Safety Requirements has been assured by compliance with EN 50021.
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Observe the following additional Zone 2 certification |
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requirements. |
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• This equipment is not resistant to sunlight or other |
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sources of UV radiation. |
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The secondary of a current transformer shall not be |
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open-circuited when applied in Class I, Zone 2 |
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environments. |
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Equipment of lesser Enclosure Type Rating must be |
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installed in an enclosure providing at least IP54 |
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protection when applied in Class I, Zone 2 |
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environments. |
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• This equipment shall be used within its specified |
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ratings defined by Allen-Bradley. |
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Provision shall be made to prevent the rated voltage |
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from being exceeded by transient disturbances of more than 40% when applied in Class I, Zone 2 environments
Publication 1794-IN083B-EN-P - November 2004
2
North American Hazardous Location Approval
The following modules are North American Hazardous Location approved: 1794-IB10XOB6 and 1794-IB16XOB16P.
The following information applies when |
Informations sur l’utilisation de cet équipement |
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operating this equipment in hazardous |
en environnements dangereux : |
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locations: |
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Products marked “CL I, DIV 2, GP A, B, C, D” are |
Les produits marqués "CL I, DIV 2, GP A, B, C, D" ne |
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suitable for use in Class I Division 2 Groups A, B, C, |
conviennent qu’à une utilisation en environnements |
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D, Hazardous Locations and nonhazardous locations |
de Classe I Division 2 Groupes A, B, C, D dangereux et |
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only. Each product is supplied with markings on the |
non dangereux. Chaque produit est livré avec des |
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rating nameplate indicating the hazardous location |
marquages sur sa plaque d’identification qui |
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temperature code. When combining products within |
indiquent le code de température pour les |
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a system, the most adverse temperature code |
environnements dangereux. Lorsque plusieurs |
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(lowest “T” number) may be used to help determine |
produits sont combinés dans un système, le code de |
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the overall temperature code of the system. |
température le plus défavorable (code de température |
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Combinations of equipment in your system are |
le plus faible) peut être utilisé pour déterminer le |
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subject to investigation by the local Authority |
code de température global du système. Les |
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Having Jurisdiction at the time of installation. |
combinaisons d’équipements dans le système sont |
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sujettes à inspection par les autorités locales |
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qualifiées au moment de l’installation. |
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EXPLOSION HAZARD |
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RISQUE D’EXPLOSION |
WARNING |
AVERTISSEMENT |
• Couper le courant ou |
• Do not disconnect |
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equipment unless power |
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s’assurer que l’environnement |
has been removed or the |
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est classé non dangereux avant |
area is known to be |
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de débrancher l'équipement. |
nonhazardous. |
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• Couper le courant ou |
• Do not disconnect |
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s'assurer que l’environnement |
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connections to this |
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est classé non dangereux avant |
equipment unless power |
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de débrancher les connecteurs. |
has been removed or the |
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Fixer tous les connecteurs |
area is known to be |
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externes reliés à cet |
nonhazardous. Secure any |
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équipement à l'aide de vis, |
external connections that |
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loquets coulissants, |
mate to this equipment by |
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connecteurs filetés ou autres |
using screws, sliding |
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moyens fournis avec ce produit. |
latches, threaded |
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• La substitution de |
connectors, or other means |
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provided with this product. |
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composants peut rendre cet |
• Substitution of |
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équipement inadapté à une |
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utilisation en environnement de |
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components may impair |
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Classe I, Division 2. |
suitability for Class I, |
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• S’assurer que |
Division 2. |
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• If this product contains |
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l’environnement est classé non |
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dangereux avant de changer |
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batteries, they must only be |
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les piles. |
changed in an area known |
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to be nonhazardous. |
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Installing Your Digital Input/Output Module |
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3 |
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1 |
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The 1794-IB10XOB6 module mounts on a 1794-TB3 or -TB3S terminal base. The 1794-IB16XOB16P module mounts on a 1794-TB32 or -TB32S terminal base.
During mounting of all devices, be sure that all
ATTENTION |
debris (metal chips, wire strands, etc.) is kept |
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from falling into the module. Debris that falls |
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into the module could cause damage on |
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power up. |
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1.Rotate the keyswitch (1) on the terminal base (2) clockwise to position 2 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/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.
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If you remove or insert the module while the |
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WARNING |
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backplane power is on, an electrical arc can occur. |
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This could cause an explosion in hazardous location |
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installations. Be sure that power is removed or the |
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area is nonhazardous before proceeding.. |
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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. The module is seated when the latching mechanism (7) is locked into the module.
Connecting Wiring for the 1794-IB10XOB6
1.Connect individual input and output wiring to numbered terminals on the 0-15 row (A) as indicated in the table below.
2.Connect the associated +V dc power lead of the input device to the corresponding terminal on the 34-51 row (C) for each input as indicated in the table below. (The +V power terminals of row (C) are internally connected together.)
3.Connect the associated input device common (3-wire devices only) and output device common to the corresponding terminals on the 16-33 row. (B) for each input and output as indicated in the table below. (Commons are internally connected together.)
4.Connect +V dc power to terminal 34 on the 34-51 row (C).
5.Connect dc common to terminal 16 on the 16-33 row (B).
6.If daisychaining power to the next terminal base, connect a jumper from terminal 51 (+V dc) on this base unit to terminal 34 on the next base unit.
7.If continuing dc common to the next base unit, connect a jumper from terminal 33 (common) on this base unit to terminal 16 on the next base unit.
Wiring Connections for the 1794-IB10XOB6
Input1 |
Signal |
Return |
Supply |
Sink Input |
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Input 0 |
A-0 |
B-17 |
C-35 |
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Input 1 |
A-1 |
B-18 |
C-36 |
Input 2 |
A-2 |
B-19 |
C-37 |
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Input 3 |
A-3 |
B-20 |
C-38 |
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Input 4 |
A-4 |
B-21 |
C-39 |
Input 5 |
A-5 |
B-22 |
C-40 |
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Input 6 |
A-6 |
B-23 |
C-41 |
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Input 7 |
A-7 |
B-24 |
C-42 |
Input 8 |
A-8 |
B-25 |
C-43 |
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Input 9 |
A-9 |
B-26 |
C-44 |
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Source Output |
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Output 0 |
A-10 |
B-27 |
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Output 1 |
A-11 |
B-28 |
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Output 2 |
A-12 |
B-29 |
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Output 3 |
A-13 |
B-30 |
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Output 4 |
A-14 |
B-31 |
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Output 5 |
A-15 |
B-32 |
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+V dc |
C-34 thru C-51 (internally connected together) |
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Common |
B-16 thru B-33 (internally connected together) |
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1Two wire input devices use signal and supply terminals. Three wire devices use signal, return and supply terminals.
Publication 1794-IN083B-EN-P - November 2004
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