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™
SCXI -1161
User Manual
8-Channel Power Relay Module
SCXI-1161 User Manual
March 1999 Edition
Part Number 320514C-01
© Copyright 1993, 1999 National Instruments Corporation. All Rights Reserved.
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Worldwide Technical Support and Product Information www.natinst.com National Instruments Corporate Headquarters 11500 North Mopac Expressway Austin, Texas 78759-3504 USA Tel: 512 794 0100 Worldwide Offices Australia 03 9879 5166, Austria 0662 45 79 90 0, Belgium 02 757 00 20, Brazil 011 284 5011, Canada (Ontario) 905 785 0085, Canada (Québec) 514 694 8521, China 0755 3904939, Denmark 45 76 26 00, Finland 09 725 725 11, France 01 48 14 24 24, Germany 089 741 31 30, Hong Kong 2645 3186, India 9
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Important Information Warranty The SCXI-1161 is warranted against defects in materials and workmanship for a period of one year from the date of shipment, as evidenced by receipts or other documentation. National Instruments will, at its option, repair or replace equipment that proves to be defective during the warranty period. This warranty includes parts and labor. The media on which you receive National Instruments software are warranted not to fail to execute programming instructio
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Table of Contents About This Manual Organization of This Manual........................................................................................ix Conventions Used in This Manual................................................................................x National Instruments Documentation ...........................................................................xi Related Documentation.................................................................................................xi
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Table of Contents Chapter 3 Signal Connections Screw Terminal Connections ....................................................................................... 3-1 Contact Protection for Inductive Load Connections .................................................... 3-1 Signal Connection .......................................................................................... 3-4 Rear Signal Connector.............................................................................................
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Table of Contents Figure 3-3. SCXI-1161 Rear Signal Connector Pin Assignment .............................3-5 Figure 4-1. SCXI-1161 Block Diagram ...................................................................4-2 Figure 4-2. Digital Interface Circuitry Block Diagram ............................................4-3 Figure 4-3. SCXI-1161 Digital Control....................................................................4-4 Tables Table 2-1. Configuration of Jumpers W1 and W2....................
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About This Manual This manual describes the electrical and mechanical aspects of the SCXI-1161 and contains information concerning its operation and programming. The SCXI-1161 is a member of the National Instruments Signal Conditioning eXtensions for Instrumentation (SCXI) Series modules for the National Instruments data acquisition plug-in boards. This module switches and controls power signals. The SCXI-1161 operates as eight relay channels. Each channel is isolated and independently co
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About This Manual • Appendix C, Customer Communication, contains forms you can use to request help from National Instruments or to comment on our products. •The Glossary contains an alphabetical list and description of terms used in this manual, including abbreviations, acronyms, metric prefixes, mnemonics, and symbols. Index •The contains an alphabetical list of key terms and topics in this manual, including the page where you can find each one. Conventions Used in This Manual The followi
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About This Manual monospace Lowercase text in this font denotes text or characters that are to be literally input from the keyboard, sections of code, programming examples, and syntax examples. This font is also used for the proper names of disk drives, paths, directories, programs, subprograms, subroutines, device names, functions, variables, filenames, and extensions, and for statements and comments taken from program code. NB NB refers to the NuBus series computers. PC PC refers to the I
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About This Manual documentation sets and the NI-DAQ documentation. After you set up your hardware system, use either the application software (LabVIEW or LabWindows/CVI) or the NI-DAQ documentation to help you write your application. If you have a large, complicated system, it is worthwhile to look through the software documentation before you configure your hardware. • Accessory installation guides or manuals—If you are using accessory products, read the terminal block and cable assembly
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Chapter 1 Introduction This chapter describes the SCXI-1161; lists the contents of your SCXI-1161 kit; describes the optional software, optional equipment, and custom cables; and explains how to unpack the SCXI-1161 kit. About the SCXI-1161 The SCXI-1161 consists of eight isolated single-pole double-throw (SPDT), or one form C, relay channel. With the SCXI-1161, the SCXI chassis can serve as a controller or switcher in laboratory testing, production testing, and industrial-process monitorin
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Chapter 1 Introduction Software Programming Choices There are several options to choose from when programming your National Instruments DAQ or SCXI hardware. You can use LabVIEW, LabWindows/CVI, ComponentWorks, VirtualBench, NI-DAQ, or register-level programming. National Instruments Application Software LabVIEW features interactive graphics, a state-of-the-art user interface, and a powerful graphical programming language. The LabVIEW Data Acquisition Virtual Instrument (VI) Library, a ser
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Chapter 1 Introduction NI-DAQ Driver Software The NI-DAQ driver software is included at no charge with all National Instruments DAQ hardware. NI-DAQ is not packaged with SCXI or accessory products, except for the SCXI-1200. NI-DAQ has an extensive library of functions that you can call from your application programming environment. These functions include routines for analog input (A/D conversion), buffered data acquisition (high-speed A/D conversion), analog output (D/A conversion), wavef
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Chapter 1 Introduction Conventional ComponentWorks, Programming Environment LabVIEW, LabWindows/CVI, or VirtualBench NI-DAQ Driver Software Personal DAQ or Computer or SCXI Hardware Workstation Figure 1-1. The Relationship between the Programming Environment, NI-DAQ, and Your Hardware Register-Level Programming The final option for programming any National Instruments DAQ hardware is to write register-level software. Writing register-level programming software can be very time-consuming a
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Chapter 1 Introduction Optional Equipment National Instruments offers a variety of products to use with your SCXI-1611, including cables and other accessories as follows: • Cables and cable assemblies • Multichassis adapter • One-slot cable extender For more specific information about these products, refer to your National Instruments catalogue or call the office nearest you. Custom Cables The SCXI-1161 rear signal connector is a 50-pin male ribbon-cable header. The manufacturer part number N
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Chapter 1 Introduction Unpacking Your SCXI-1161 module is shipped in an antistatic package to prevent electrostatic damage to the module. Electrostatic discharge can damage several components on the module. To avoid such damage in handling the module, take the following precautions: • Ground yourself via a grounding strap or by holding a grounded object. • Touch the antistatic package to a metal part of your SCXI chassis before removing the module from the package. • Remove the module from
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Chapter Configuration and 2 Installation This chapter describes the SCXI-1161 jumper configurations, installation of the SCXI-1161 into the SCXI chassis, signal connections to the SCXI-1161, and cable wiring. Module Configuration The SCXI-1161 includes five jumpers, shown in Figure 2-1. © National Instruments Corporation 2-1 SCXI-1161 User Manual
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Chapter 2 Configuration and Installation Figure 2-1. SCXI-1161 General Parts Locator Diagram SCXI-1161 User Manual 2-2 © National Instruments Corporation Thumbscrew Arc Suppressor Product Name Assembly Number Pads W2 Rear Signal Connector W1 Strain Relief Bar W3 W4 W5 Strain Relief Tightening Screws Warning Label SCXIbus Connector Grounding Screw Serial Screw Number Thumbscrew Terminals FRONT REAR
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Chapter 2 Configuration and Installation Caution: DO NOT OPERATE THE DEVICE IN AN EXPLOSIVE ATMOSPHERE ! OR WHERE THERE MAY BE FLAMMABLE GASES OR FUMES. KEEP AWAY FROM LIVE CIRCUITS. Do not remove equipment covers or shields unless you are trained to do so. If signal wires are connected to the device, hazardous voltages may exist even when the equipment is turned off. To avoid a shock hazard, do not perform procedures involving cover or shield removal unless you are qualified to do so and d
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Chapter 2 Configuration and Installation Connect the signal wires to the screw terminals by inserting the stripped end of the wire full into the terminals. Tighten the terminals to a torque of 5 to 7 in.-lb. Connections, including power signals to ground and vice versa, that exceed any of the maximum signal ratings on the SCXI device can create a shock or fire hazard or can damage any or all of the boards connected to the SCXI chassis, the host computer, and the SCXI device. National Instru
