Rockwell Automation 1771-OW16B User Manual

Inside…

Installation Instructions

Electromechanical Relay Contact Output
Module

Cat. No. 1771-OW16 Series B

To : See Page:

Important User Information 1

Preinstallation Considerations 5

Calculate Power Requirements 6

Key the Backplane Connector 7

Install the Module and Field Wiring Arm 7

Important User Information

Connect Wiring to the Field Wiring Arm 8

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.

1 Publication 1771-IN069B-EN-P - November 2005

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.

Publication 1771-IN069B-EN-P - November 2005

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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