Table of Contents
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To The Installer
Important User Information
DC (10 40V) Current Limiting
Output Module
Cat. No. 1771 OBDS
Use this document as a guide when installing the catalog number
1771-OBDS output module.
For information on:
For this reference information
Intepreting the Status Indicators
Because of the variety of uses for the products described in this
publication, those responsible for the application and use of these
products must satisfy themselves that all necessary steps have been
taken to assure that each application and use meets all performance
and safety requirements, including any applicable laws, regulations,
codes and standards. In no event will Rockwell Automation be
responsible or liable for indirect or consequential damage resulting
from the use or application of these products.
Any illustrations, charts, sample programs, and layout examples
shown in this publication are intended solely for purposes of
example. Since there are many variables and requirements associated
with any particular installation, Rockwell Automation does not
assume responsibility or liability (to include intellectual property
liability) for actual use based upon the examples shown in this
publication.
Installation Instructions
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Publication 1771 IN033B-EN-P - July 2002
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Table of Contents
Related Manuals for Allen-Bradley 1771-OBDS
Summary of Contents for Allen-Bradley 1771-OBDS
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Page 1: Table Of Contents
DC (10 40V) Current Limiting Output Module Cat. No. 1771 OBDS To The Installer Use this document as a guide when installing the catalog number 1771-OBDS output module. For information on: See page Important User Information Preinstallation Considerations Calculate Power Requirements... - Page 2 DC (10-40V) Current Limiting Output Module Allen–Bradley publication SGI–1.1, Safety Guidelines for Application, Installation, and Maintenance of Solid–State Control (available from your local Rockwell Automation office), describes some important differences between solid–state equipment and electromechanical devices that should be taken into consideration when applying products such as those described in this publication.
- Page 3 DC (10-40V) Current Limiting Output Module 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.
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Page 4: Preinstallation Considerations
DC (10-40V) Current Limiting Output Module Preventing Electrostatic Discharge ATTENTION 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. -
Page 5: Key The Backplane Connector
DC (10-40V) Current Limiting Output Module Key the Backplane A module inserted into a wrong slot could be ATTENTION Connector damaged by improper voltages connected through the wiring arm. Use keying bands to prevent damage to the module. Position the keying bands in the backplane connectors to correspond to Place your module in any slot in the chassis the key slots on the module. -
Page 6: Install The Module And Field Wiring Arm
DC (10-40V) Current Limiting Output Module Install the Module and Field When you insert or remove the module while WARNING Wiring Arm backplane power is on, or you connect or disconnect the wiring arm with field power applied, an electrical arc can occur. This could cause an explosion in hazardous location installations. -
Page 7: Connect Wiring To The Output Module
DC (10-40V) Current Limiting Output Module Connect Wiring to the Remove power from the 1771 I/O chassis ATTENTION Output Module backplane and field wiring arm before removing or installing an I/O module. • Failure to remove power from the backplane or wiring arm could cause module damage, degradation of performance, or injury. - Page 8 DC (10-40V) Current Limiting Output Module Output 00 Output 01 Output 02 Output 03 Output 04 Output 05 Output 06 Output 07 Output 10 User Output 11 Output Device Output 12 Supply Output 13 Output 14 Output 15 Output 16 Output 17 Actual wiring runs in this direction.
- Page 9 DC (10-40V) Current Limiting Output Module You can use a DC (10-40V) Output Module (cat. no. 1771-OBDS) to directly drive terminals on IMPORTANT the following modules: • DC (10-30V) Input module (cat. no. 1771-IBD) • DC (20-60V) Input module (cat. no.
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Page 10: Short Circuit Protection
DC (10-40V) Current Limiting Output Module Short Circuit Protection Each output of the module is capable of withstanding a short circuit condition. When an output is shorted, it will become ”latched off,” but its corresponding status indicator will remain lighted. Once the short circuit is removed from that output, the output image table bit for that output must be reset by ”toggling”... -
Page 11: Replacing The Fuse
DC (10-40V) Current Limiting Output Module Replacing the Fuse The individual output transistors are thermally protected against overcurrent or overtemperature conditions. However, a module overload may cause the single, replaceable onboard fuse to blow when the module output exceeds 12A. The onboard fuse is not intended to protect individual output transistors. -
Page 12: Hazardous Location Approval
à une utilisation en environnement de Classe 1, Division • S'assurer que l'environnement est classé non dangereux avant de changer les piles. PLC-2/02, PLC-2/05, PLC-2/16, and PLC-2/17 are trademarks of Allen-Bradley Company, Inc. Publication 1771 IN033B-EN-P - July 2002... -
Page 13: Specifications
DC (10-40V) Current Limiting Output Module Specifications Outputs per Module Module Location 1771 A1B, thru A4B or later I/O chassis Output Voltage Range 10 to 40V dc Output Current Rating 1A per output not to exceed 8A per module, Pilot duty. See derating curve below. - Page 14 2 environments. • This equipment shall be used within its specified ratings defined by Allen-Bradley. • Provision shall be made to prevent the rated voltage from being exceeded by transient disturbances of more than 40% when applied in Class I, Zone 2 environments.
- Page 15 DC (10-40V) Current Limiting Output Module Derating Curve for the 1771-OBDS Temperature ( Publication 1771 IN033B-EN-P - July 2002...
- Page 16 DC (10-40V) Current Limiting Output Module Publication 1771 IN033B-EN-P - July 2002 PN957689-07 Supersedes publication 1771 5.33 - October 1995 Copyright 2002 Rockwell Automation Inc. Printed in USA Publication 1771 IN033B-EN-P - July 2002...