Rockwell Automation 1771-OW16B User Manual

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Installation Instructions
Electromechanical Relay Contact Output Module
Cat. No. 1771-OW16 Series B
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Important User Information

Interpret the Status Indicators 11
Specifications 12
Rockwell Automation Support BackCover
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.rockwellautomation.com/literature) 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.
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2 Electromechanical Relay Contact Output Module
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.
ATTENTION
IMPORTANT
SHOCK HAZARD
BURN HAZARD
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
Identifies information that is critical for successful application and understanding of the product.
Labels may be located on or inside the equipment (e.g., drive or motor) to alert people that dangerous voltage may be present.
Labels may be located on or inside the equipment (e.g., drive or motor) to alert people that surfaces may be dangerous temperatures.
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Electromechanical Relay Contact Output Module 3
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.
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.
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.
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4 Electromechanical Relay Contact Output Module
T
WARNING
When you connect or disconnect the wiring arm with field side power applied, an electrical arc can occur. This could cause an explosion in hazardous location installations. Be sure that power is removed or the area is nonhazrdous before proceeding.
WARNING
If you connect or disconnect wiring while field side power is applied, an electrical arc can occur. This could cause an explosion in hazardous location installations. Be sure that power is removed or the area is nonhazrdous before proceeding.
North American Hazardous Location Approval
The following information applies when operating this equipment in hazardous locations:
Products marked “CL I, DIV 2, GP A, B, C, D” are suitable for use in Class I Division 2 Groups A, B, C, D, Hazardous Locations and nonhazardous locations only. Each product is supplied with markings on the rating nameplate indicating the hazardous location temperature code. When combining products within a system, the most adverse temperature code (lowest “T” number) may be used to help determine the overall temperature code of the system. Combinations of equipment in your system are subject to investigation by the local Authority Having Jurisdiction at the time of installation.
WARNING
EXPLOSION HAZARD
Do not disconnect equipment unless power has been removed or the area is known to be nonhazardous.
Do not disconnect connections to this equipment unless power has been removed or the area is known to be nonhazardous. Secure any external connections that mate to this equipment by using screws, sliding latches, threaded connectors, or other means provided with this product.
Substitution of components may impair suitability for Class I, Division 2.
If this product contains batteries, they must only be changed in an area known to be nonhazardous.
Informations sur l’utilisation de cet équipement en environnements dangereux :
Les produits marqués "CL I, DIV 2, GP A, B, C, D" ne conviennent qu’à une utilisation en environnements de Classe I Division 2 Groupes A, B, C, D dangereux et non dangereux. Chaque produit est livré avec des marquages sur sa plaque d’identification qui indiquent le code de température pour les environnements dangereux. Lorsque plusieurs produits sont combinés dans un système, le code de température le plus défavorable (code de température le plus faible) peut être utilisé pour déterminer le code de température global du système. Les combinaisons d’équipements dans le système sont sujettes à inspection par les autorités locales qualifiées au moment de l’installation.
AVERTISSEMEN
RISQUE D’EXPLOSION
Couper le courant ou s’assurer que l’environnement est classé non dangereux avant de débrancher l'équipement.
Couper le courant ou s'assurer que l’environnement est classé non dangereux avant de débrancher les connecteurs. Fixer tous les connecteurs externes reliés à cet équipement à l'aide de vis, loquets coulissants, connecteurs filetés ou autres moyens fournis avec ce produit.
La substitution de composants peut rendre cet équipement inadapté à une utilisation en environnement de Classe I, Division 2.
S’assurer que l’environnement est classé non dangereux avant de changer les piles.
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Electromechanical Relay Contact Output Module 5

Preinstallation Considerations

This module must be used with a 1771-A1B through 1771-A4B or later chassis. It may also be used in a 1771-AM1 or 1771-AM2 chassis. This module does not contain surge limiting circuitry. With properly chosen surge limiting devices, this module can be used to control resistive, capacitive, and inductive loads.
The module’s outputs are arranged in two groups of eight, each output is independently isolated. The first group of outputs are arranged as normally-open contacts, and the second group of outputs are arranged as selectable normally-open or normally-closed contacts.
Refer to Specifications on page 12 for complete output specifications.Relay
Reliability
Varying load conditions can drastically shorten relay life. Operation at the same load conditions, preferably at low loads, delivers long relay life. Do not operate relays at low current or voltage after operating them at high power conditions. Operations at low power first, followed by high power, is acceptable.
Relay Environment
Relays in this module are not hermetically sealed. Do not use this module in environments with contaminants such as acid, ammonia, nitrogen, and chlorine.
Module Loading
Both minimum current and minimum voltage specifications are given to assure there is always a good conduction surface between the relay’s contacts. The relays will function at less than minimum specified voltages and currents, but module reliability is not guaranteed.
Exceeding the module’s maximum power ratings wil shorten the life of the relay contacts. Do not operate this module with voltage, current, or power levels higher than the maximum specifications, as given in the Specifications section of this installation instruction.
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