National Instruments 320423H-01, 1001, 1000DC User Manual

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SCXI

SCXI Chassis User Manual

May 2004 Edition

Part Number 320423H-01

Worldwide Technical Support and Product Information

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For further support information, refer to the Signal Conditioning Technical Support Information document. To comment on the documentation, send email to techpubs@ni.com.

Important Information

Warranty

The SCXI chassis (SCXI-1000, SCXI-1000DC, and SCXI-1001) are 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 instructions, due to defects in materials and workmanship, for a period of 90 days from date of shipment, as evidenced by receipts or other documentation. National Instruments will, at its option, repair or replace software media that do not execute programming instructions if National Instruments receives notice of such defects during the warranty period. National Instruments does not warrant that the operation of the software shall be uninterrupted or error free.

A Return Material Authorization (RMA) number must be obtained from the factory and clearly marked on the outside of the package before any equipment will be accepted for warranty work. National Instruments will pay the shipping costs of returning to the owner parts which are covered by warranty.

National Instruments believes that the information in this document is accurate. The document has been carefully reviewed for technical accuracy. In the event that technical or typographical errors exist, National Instruments reserves the right to make changes to subsequent editions of this document without prior notice to holders of this edition. The reader should consult National Instruments if errors are suspected. In no event shall National Instruments be liable for any damages arising out of or related to this document or the information contained in it.

XCEPT AS SPECIFIED HEREIN, NATIONAL INSTRUMENTS MAKES NO WARRANTIES, EXPRESS OR IMPLIED, AND SPECIFICALLY DISCLAIMS ANY WARRANTY OF

MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. CUSTOMER’S RIGHT TO RECOVER DAMAGES CAUSED BY FAULT OR NEGLIGENCE ON THE PART OF

ATIONAL INSTRUMENTS SHALL BE LIMITED TO THE AMOUNT THERETOFORE PAID BY THE CUSTO MER. NATIONAL INSTRUMENTS WILL NOT BE LIA BLE FOR DAMAGES RESULTIN G FROM LOSS OF DATA, PROFITS, USE OF PRODUCTS, OR INCIDENTAL OR CONSEQUENTIAL DAMAGES, EVEN IF ADVI SED OF THE POSSIB ILITY THEREOF. This limitation of the liability of National Instruments will apply regardless of the form of action, whether in contract or tort, including

negligence. Any action against National Instruments must be brought within one year after the cause of action accrues. National Instruments shall not be liable for any delay in performance due to causes beyond its reasonable control. The warranty provided herein does not cover damages, defects, malfunctions, or service failures caused by owner’s failure to follow the National Instruments installation, operation, or maintenance instructions; owner’s modification of the product; owner’s abuse, misuse, or negligent acts; and power failure or surges, fire, flood, accident, actions of third parties, or other events outside reasonable control.

Copyright

Under the copyright laws, this publication may not be reproduced or transmitted in any form, electronic or mechanical, including photocopying, recording, storing in an information retrieval system, or translating, in whole or in part, without the prior written consent of National Instruments Corporation.

Trademarks

CVI™, LabVIEW™, Measurement Studio™, National Instruments™, NI™, ni.com™, NI-DAQ™, and SCXI™ are trademarks of National Instruments Corporation.

Product and company names mentioned herein are trademarks or trade names of their respective companies.

Patents

For patents covering National Instruments products, refer to the appropriate location: Help»Patents in your software, the patents.txt file on your CD, or ni.com/patents.

WARNING REGARDING USE OF NATIONAL INSTRUMENTS PRODUCTS

(1) NATIONAL INSTRUMENTS PRODUCTS ARE NOT DESIGNED WITH COMPONENTS AND TESTING FOR A LEVEL OF RELIABILITY SUITABLE FOR USE IN OR IN CONNECTION WITH SURGICAL IMPLANTS OR AS CRITICAL COMPONENTS IN ANY LIFE SUPPORT SYSTEMS WHOSE FAILURE TO PERFORM CAN REASONABLY BE EXPECTED TO CAUSE SIGNIFICANT INJURY TO A HUMAN.

(2) IN ANY APPLICATION, INCLUDING THE ABOVE, RELIABILITY OF OPERATION OF THE SOFTWARE PRODUCTS CAN BE IMPAIRED BY ADVERSE FACTORS, INCLUDING BUT NOT LIMITED TO FLUCTUATIONS IN ELECTRICAL POWER SUPPLY, COMPUTER HARDWARE MALFUNCTIONS, COMPUTER OPERATING SYSTEM SOFTWARE FITNESS, FITNESS OF COMPILERS AND DEVELOPMENT SOFTWARE USED TO DEVELOP AN APPLICATION, INSTALLATION ERRORS, SOFTWARE AND HARDWARE COMPATIBILITY PROBLEMS, MALFUNCTIONS OR FAILURES OF ELECTRONIC MONITORING OR CONTROL DEVICES, TRANSIENT FAILURES OF ELECTRONIC SYSTEMS (HARDWARE AND/OR SOFTWARE), UNANTICIPATED USES OR MISUSES, OR ERRORS ON THE PART OF THE USER OR APPLICATIONS DESIGNER (ADVERSE FACTORS SUCH AS THESE ARE HEREAFTER COLLECTIVELY TERMED “SYSTEM FAILURES”). ANY APPLICATION WHERE A SYSTEM FAILURE WOULD CREATE A RISK OF HARM TO PROPERTY OR PERSONS (INCLUDING THE RISK OF BODILY INJURY AND DEATH) SHOULD NOT BE RELIANT SOLELY UPON ONE FORM OF ELECTRONIC SYSTEM DUE TO THE RISK OF SYSTEM FAILURE. TO AVOID DAMAGE, INJURY, OR DEATH, THE USER OR APPLICATION DESIGNER MUST TAKE REASONABLY PRUDENT STEPS TO PROTECT AGAINST SYSTEM FAILURES, INCLUDING BUT NOT LIMITED TO BACK-UP OR SHUT DOWN MECHANISMS. BECAUSE EACH END-USER SYSTEM IS CUSTOMIZED AND DIFFERS FROM NATIONAL INSTRUMENTS' TESTING PLATFORMS AND BECAUSE A USER OR APPLICATION DESIGNER MAY USE NATIONAL INSTRUMENTS PRODUCTS IN COMBINATION WITH OTHER PRODUCTS IN A MANNER NOT EVALUATED OR CONTEMPLATED BY NATIONAL INSTRUMENTS, THE USER OR APPLICATION DESIGNER IS ULTIMATELY RESPONSIBLE FOR VERIFYING AND VALIDATING THE SUITABILITY OF NATIONAL INSTRUMENTS PRODUCTS WHENEVER NATIONAL INSTRUMENTS PRODUCTS ARE INCORPORATED IN A SYSTEM OR APPLICATION, INCLUDING, WITHOUT LIMITATION, THE APPROPRIATE DESIGN, PROCESS AND SAFETY LEVEL OF SUCH SYSTEM OR APPLICATION.

Conventions

The following conventions are used in this manual:

» The » symbol leads you through nested menu items and dialog box options

to a final action. The sequence File»Page Setup»Options directs you to pull down the File menu, select the Page Setup item, and select Options from the last dialog box.

This icon denotes a note, which alerts you to important information.

This icon denotes a caution, which advises you of precautions to take to avoid injury, data loss, or a system crash. When this icon is marked on the product, refer to the Read Me First: Safety and Radio-Frequency Interference document, shipped with the product, for precautions to take.

When symbol is marked on a product it denotes a warning advising you to take precautions to avoid electrical shock.

When symbol is marked on a product it denotes a component that may be hot. Touching this component may result in bodily injury.

bold Bold text denotes items that you must select or click in the software, such

as menu items and dialog box options. Bold text also denotes parameter names.

italic Italic text denotes variables, emphasis, a cross reference, or an introduction

to a key concept. This font also denotes text that is a placeholder for a word or value that you must supply.

monospace Text in this font denotes text or characters that you should enter 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, operations, variables, filenames, and extensions.

SCXI chassis Refers to the SCXI-1000, SCXI-1000DC, and SCXI-1001. When

information pertains to only one chassis, that chassis is named explicitly; for example, the SCXI-1001 has 12 module slots.

SCXIbus Refers to the backplane in the chassis. A signal on the backplane is referred

to as the SCXIbus <signal name> line (or signal). The SCXIbus descriptor may be omitted when the meaning is clear.

Slot 0 Refers to the power supply and control circuitry in the SCXI chassis.

Chapter 1 Introduction

About the SCXI Chassis ................................................................................................1-1

What You Need to Get Started ......................................................................................1-1

Software Programming Choices ....................................................................................1-2

NI-DAQ...........................................................................................................1-2

National Instruments ADE Software...............................................................1-3

National Instruments Documentation ............................................................................1-4

Optional Equipment.......................................................................................................1-5

Chapter 2 Configuring and Installing the SCXI Chassis

Chassis Description........................................................................................................2-1

Chassis Uses ....................................................................................................2-7

Configuring the SCXI Chassis.......................................................................................2-8

Selecting Chassis Addresses............................................................................2-8

SCXI-1000/1001 ...............................................................................2-8

SCXI-1000DC...................................................................................2-9

Selecting Voltage and Replacing the Fuse for the SCXI-1000

and SCXI-1001.............................................................................................2-11

Selecting the Voltage ........................................................................2-12

Replacing the Power Entry Module Fuse .........................................2-13

Replacing and Checking Backplane Fuses on the SCXI-1000

and SCXI-1001 ..............................................................................2-13

Replacing the Fuses on the SCXI-1000DC.....................................................2-14

Replacing the Power Entry Fuse and +5 VDC Fuse.........................2-14

Replacing and Checking Backplane Fuses .......................................2-15

Installing the SCXI Chassis ...........................................................................................2-16

Installing the SCXI-1000 and SCXI-1001 Chassis .........................................2-16

Installing the SCXI-1000DC Chassis..............................................................2-16

Installing Filler Panels ...................................................................................................2-17

Installing Front Filler Panels ...........................................................................2-17

Installing Rear Panels......................................................................................2-18

Maintaining the Fan Filter .............................................................................................2-18

Contents

Appendix A Specifications

Appendix B Common Questions

Glossary

Index

Figures

Figure 2-1. SCXI-1000 Front View Diagram.......................................................... 2-2

Figure 2-2. SCXI-1000DC Front View Diagram .................................................... 2-3

Figure 2-3. SCXI-1001 Front View Diagram.......................................................... 2-4

Figure 2-4. SCXI-1000 Rear View Diagram........................................................... 2-5

Figure 2-5. SCXI-1001 Rear View Diagram........................................................... 2-6

Figure 2-6. SCXI-1000DC Rear View Diagram ..................................................... 2-7

Figure 2-7. Address Setting Examples .................................................................... 2-9

Figure 2-8. SCXI-1000DC Chassis Address Jumper Settings................................. 2-10

Figure A-1. Physical Dimensions of the SCXI-1001 ............................................... A-3

Figure A-2. Physical Dimensions of the SCXI-1000 and SCXI-1000DC ............... A-4

Tables

Table 2-1. SCXI Chassis Front View Items........................................................... 2-1

Table 2-2. SCXI-1000/1001 Chassis Rear View Items ......................................... 2-4

Table 2-3. SCXI-1000DC Chassis Rear View Items ............................................. 2-6

Table 2-4. SCXI-1000/1001 Voltage Selection and Fuse Ratings by Region ...... 2-11

SCXI Chassis User Manual vi ni.com

Introduction

This manual describes the electrical and mechanical aspects of the SCXI-1000, SCXI-1000DC, and SCXI-1001 chassis and contains information concerning their operation. The SCXI chassis supply power to and contain control circuitry for the SCXI series of modules. The SCXI-1000 and SCXI-1000DC hold up to four modules. The SCXI-1001 holds up to 12 modules.

This chapter describes the SCXI chassis, lists what you need to get started, and describes the optional software and equipment.

About the SCXI Chassis

The SCXI-1000 and SCXI-1001 chassis are powered with standard AC power. The SCXI-1000DC is powered by any 9.5 to 16 VDC source such as the optional SCXI-1382 battery pack or the SCXI-1383 power supply.

Every SCXI chassis supplies a low-noise environment for signal conditioning, supplying power and control circuitry for the modules. It is a general-purpose chassis that you can use with current SCXI modules.

Refer to Appendix A, Specifications, for detailed SCXI-1000, SCXI-1000DC, and SCXI-1001 specifications.

What You Need to Get Started

To set up and use the SCXI chassis, you need the following items:

❑ Hardware

– One of the following SCXI chassis:

• SCXI-1000

• SCXI-1000DC

• SCXI-1001

Chapter 1 Introduction

– One of the following, depending on your application:

• Power cord (120, 220, or 240 VAC)

• SCXI-1382 battery pack (SCXI-1000DC only)

• SCXI-1383 (VDC) power supply (SCXI-1000DC only)

– A computer

❑ Software

–NI-DAQ

– One of the following software packages:

•LabVIEW

™

•LabWindows

• Measurement Studio

/CVI

❑ Documentation

– SCXI Chassis User Manual

– Read Me First: Safety and Radio-Frequency Interference

– SCXI Quick Start Guide

– Documentation for your hardware

– Documentation for your software

You can download documentation from

ni.com/support.

Software Programming Choices

There are several options to choose from when programming the NI plug-in DAQ and SCXI hardware. You can use LabVIEW, LabWindows/CVI, Measurement Studio, or NI-DAQ.

NI-DAQ

NI-DAQ has an extensive library of functions that you can call from the application development environment (ADE). These functions allow you to use all the features of NI measurement products.

NI-DAQ carries out many of the complex interactions, such as programming interrupts, between the computer and the DAQ hardware. NI-DAQ maintains a consistent software interface among its different versions so that you can change platforms with minimal modifications

SCXI Chassis User Manual 1-2 ni.com

Chapter 1 Introduction

to your code. Whether you are using LabVIEW, LabWindows/CVI, Measurement Studio, VI Logger, or other ADEs, your application uses NI-DAQ.

You can download the most recent version of NI-DAQ from

downloads

National Instruments ADE Software

LabVIEW features interactive graphics, a state-of-the-art interface, and a powerful graphical programming language. The LabVIEW Data Acquisition VI Library, a series of virtual instruments for using LabVIEW with National Instruments DAQ hardware, is included with LabVIEW.

LabWindows/CVI is a complete ANSI C ADE that features an interactive user interface, code generation tools, and the LabWindows/CVI Data Acquisition and Easy I/O libraries.

Measurement Studio, which includes tools for Visual C++ and tools for Visual Basic, is a development suite that allows you to design test and measurement applications. For Visual Basic developers, Measurement Studio features a set of ActiveX controls for using National Instruments DAQ hardware. These ActiveX controls provide a high-level programming interface for building virtual instruments (VIs). For Visual C++ developers, Measurement Studio offers a set of Visual C++ classes and tools to integrate those classes into Visual C++ applications. The ActiveX controls and classes are available with Measurement Studio and the NI-DAQ software.

ni.com/

VI Logger is an easy-to-use yet flexible tool specifically designed for data logging applications. Using dialog windows, you can configure data logging tasks to easily acquire, log, view, and share your data. VI Logger does not require any programming; it is a stand-alone, configuration-based software.

Using LabVIEW, LabWindows/CVI, Measurement Studio, or VI Logger greatly reduces the development time for your data acquisition and control application.

Chapter 1 Introduction

National Instruments Documentation

The SCXI Chassis User Manual is one piece of the documentation set for the data acquisition and SCXI system. You could have any of several types of documents, depending on the hardware and software in the system. Use the documents you have as follows:

• Getting Started with SCXI—Read this manual first. It gives an overview of the SCXI system and contains the most commonly needed information for the modules, chassis, and software.

•The SCXI Quick Start Guide—This document describes how to set up an SCXI chassis, install SCXI modules and terminal blocks, and configure the SCXI system in Measurement & Automation Explorer (MAX).

• The SCXI hardware user manuals—Read these manuals next for detailed information about signal connections and module configuration. They also explain in greater detail how the module works and contain application hints.

• The DAQ hardware user manuals—These manuals have detailed information about the DAQ hardware that plugs into or is connected to the computer. Use these manuals for hardware installation and configuration instructions, specification information about the DAQ hardware, and application hints.

• Software documentation—Examples of software documentation you may have are the LabVIEW, Measurement Studio, and NI-DAQ documentation sets. After you set up the hardware system, use either the application software (LabVIEW or Measurement Studio) 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 the hardware.

• Accessory installation guides or manuals—If you are using accessory products, read the terminal block and cable assembly installation guides or accessory user manuals. They explain how to physically connect the relevant pieces of the system. Consult these guides when you are making the connections.

• If you are designing your own module, the SCXIbus System Specification is available from NI upon request. The specification describes the physical, electrical, and timing requirements for the SCXIbus.

SCXI Chassis User Manual 1-4 ni.com

Optional Equipment

NI provides a full line of modules that amplify, filter, isolate, and multiplex a wide variety of signal types, such as thermocouples, resistance temperature detectors (RTDs), strain gauges, high-voltage inputs, current inputs, analog outputs, and digital I/O signals. Cables and terminal blocks with screw terminals, BNC connectors, or thermocouple plugs are available to connect signals to the modules.

Chapter 1 Introduction

Refer to the latest NI catalog and of sensors and I/O types supported in SCXI.

ni.com/catalog for a complete listing

Configuring and Installing the SCXI Chassis

This chapter contains instructions for configuring and installing the SCXI chassis. It describes the following:

• Chassis address selection

• Voltage and fuse selection

• Chassis, modules, and accessories installation

• Fan filter maintenance

Chassis Description

Table 2-1 describes the front view items shown in Figures 2-1, 2-2, and 2-3.

Table 2-1. SCXI Chassis Front View Items

Item Definition

Power switch Powers the chassis on and off

Indicator light When lit, indicates that the chassis is powered on

Reset button Reinitializes Slot 0 and all modules to their power-on state when

pressed

Slot 0/power supply Contains the power supply and control circuitry for the chassis

Address DIP switches Determine the chassis address—SCXI-1000 and SCXI-1001

Address selection jumpers (located behind the front panel)

Module guides Guide modules to connect with the SCXIbus connector

Backplane Brings power, control lines, and analog bus connections to modules

Front threaded strips Secure modules in the chassis and attach front panels

Determine the chassis address—SCXI-1000DC only

Chapter 2 Configuring and Installing the SCXI Chassis

1 Address DIP Switches 2 Reset Button 3 Power Switch 4 Indicator Light 5 Front Panel Screws

(flathead on some revisions)

Figure 2-1. SCXI-1000 Front View Diagram

5 6

5 4 3 2 1

ADDRESS

6 Front Panel Screws

(early revisions only) 7 Module Guides 8 Front Threaded Strips 9 Backplane 10 Slot 0/Power Supply

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Chapter 2 Configuring and Installing the SCXI Chassis

5 6

1 Address Selection Jumpers

(behind front panel) 2 Reset Button 3 Power Switch 4 Indicator Light 5 Front Panel Screws

(flathead on some revisions)

Figure 2-2. SCXI-1000DC Front View Diagram

6 Front Panel Screws

7 Module Guides 8 Front Threaded Strips 9 Backplane 10 Slot 0/Power Supply

(early revisions only)

Chapter 2 Configuring and Installing the SCXI Chassis

5 4 3

2 1

ADDRESS

7 85 6

1 Address DIP Switches 2 Reset Button 3 Power Switch 4 Indicator Light 5 Front Panel Screws (flathead on some revisions)

9 7 8

6 Front Panel Screws (early revisions only) 7 Module Guides 8 Front Threaded Strips 9 Backplane 10 Slot 0/Power Supply

Figure 2-3. SCXI-1001 Front View Diagram

Tables 2-2 and 2-3 describe the rear view items shown in Figures 2-4, 2-5, and 2-6.

Table 2-2. SCXI-1000/1001 Chassis Rear View Items

Item Description

Power entry module IEC receptacle for power input, voltage selection board, and fuse

Fuse Protects both you and the SCXI chassis in case of a fault in the chassis

Voltage tumbler Configures the chassis for the AC line voltage

Fan(s) Cools the chassis

Filter(s) Prevents dirt from contaminating the circuitry in the chassis

Fan screws Secure the fan(s) to the chassis

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Chapter 2 Configuring and Installing the SCXI Chassis

Table 2-2. SCXI-1000/1001 Chassis Rear View Items (Continued)

Item Description

Backplane fuses Protect the power supply from shorts on modules

Rear connector space For module space, connector mounting brackets, or adapters

Rear threaded strips Secure cable connections, mounting brackets, or filler panels to

the chassis

1 Fan and Filter 2 Fan Screws 3 Rear Threaded Strips 4 Rear Connector Space 5 Rear Panel Screws

(flathead on some revisions)

Figure 2-4. SCXI-1000 Rear View Diagram

4 6

6 Voltage Tumbler 7 Power Entry Module 8 Fuse (concealed) 9 Backplane Fuses (behind fan)

120Vac

Chapter 2 Configuring and Installing the SCXI Chassis

1 Fans and Filters 2 Fan Screws (each fan) 3 Rear Threaded Strips 4 Rear Connector Space 5 Rear Panel Screws (flathead on some revisions)

Table 2-3. SCXI-1000DC Chassis Rear View Items

Item Description

Power entry

Receptacle for power input; uses a 9.5 to 16 VDC power source

connector J1

6 Voltage Tumbler 7 Power Entry Module 8 Fuse (concealed) 9 Backplane Fuses (behind fan)

Figure 2-5. SCXI-1001 Rear View Diagram

120Vac

Fuse F1 Power input fuse (6.3 A), protects both you and the SCXI chassis in case

of a fault in the chassis

Fuse F2 +5 VDC internal power supply fuse (3.15 A), protects the power supply

from shorts on modules

Fan(s) Cools the chassis

Fan screws Secure the fan(s) to the chassis

Backplane fuses Protect the power supply from shorts on modules

Rear connector

For module space, connector mounting brackets, or adapter boards

space

Rear threaded strips Secure cable connections, mounting brackets, or filler panels to the chassis

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Chapter 2 Configuring and Installing the SCXI Chassis

1 Fan and Filter 2Fan Screws 3 Rear Threaded Strips 4 Rear Connector Space 5 Rear Panel Screws

(flathead on some revisions)

Figure 2-6. SCXI-1000DC Rear View Diagram

6.3A

250V

3.15A

250V

6 Power Entry Connector 7 Power Input Fuse 8 +5 VDC Internal Power Supply Fuse 9 Backplane Fuses (behind fan)

Chassis Uses

Before you configure the chassis, decide whether you are going to use it in multiplexed mode or parallel mode.

In multiplexed mode, analog input (AI) channels are multiplexed into one module output so that the cabled E Series DAQ device has access to the multiplexed output of the module and the outputs of all other multiplexed modules in the chassis.

In parallel mode, you need a separate E Series DAQ device for each module to send each of its output channels directly to a separate AI channel of the E Series DAQ device connected to the module.

Chapter 2 Configuring and Installing the SCXI Chassis

Configuring the SCXI Chassis

Configuring the chassis involves selecting a chassis or high-level data link control (HDLC) address, line voltage, and fuse value on any chassis.

Note Refer to the Read Me First: Safety and Radio-Frequency Interference document

before removing equipment covers or connecting or disconnecting any signal wires.

Selecting Chassis Addresses

These sections provide information about how to select addresses for the SCXI chassis.

SCXI-1000/1001

Unless you are using multiple chassis and need to configure one or more SCXI chassis for a different address, you can skip this section, and the SCXI chassis retains factory-default address of 0.

You can configure the SCXI chassis for one of 32 different addresses so that you can connect multiple SCXI chassis to the same control source. The five switches on the front panel of Slot 0 determine the chassis address.

Switches one through five represent the values 1, 2, 4, 8, and 16, when set to the ON position. When set to the OFF position, their value is zero. The chassis address is the sum of the switch values. Figure 2-7 shows examples of both the factory-default setting of the chassis address 0 and the switch setting for chassis address 19.

Note SCXI-1000 chassis through revision D do not have address jumpers or switches and

respond to any address, but you cannot use them in multichassis systems. Revision E chassis use jumpers on Slot 0 for chassis addressing. Revision F and later chassis use a DIP switch for chassis addressing.

SCXI-1001 chassis through revision D use jumpers on Slot 0 for chassis addressing. Revision E and later chassis use a DIP switch for chassis addressing.

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Chapter 2 Configuring and Installing the SCXI Chassis

5 4 3 2 1

Chassis Default Address = 0

Address = 19

5 4 3 2 1

Figure 2-7. Address Setting Examples

SCXI-1000DC

Unless you are using multiple chassis and need to configure one or more SCXI chassis for a different address, you can skip this section, and the SCXI chassis retains the factory-default address of 0.

You can configure the SCXI chassis for one of 32 different addresses so that you can connect multiple SCXI chassis to the same control source. Three jumpers that determine the chassis address are located behind the front panel of Slot 0 just below the Reset button. The chassis address is the sum of the values of all the jumpers. Figure 2-8 shows examples of both the factory-default setting of address 0 and the jumper settings for address 19.

Note SCXI-1000DC chassis through revision C do not have address jumpers or switches

and respond to any address, but you cannot use them in multichassis systems. Revision D and later chassis use jumpers on Slot 0 for chassis addressing.

Chapter 2 Configuring and Installing the SCXI Chassis

Chassis Address 0

Factory Setting

+16

Chassis Address 19

Example Setting

+16

Figure 2-8. SCXI-1000DC Chassis Address Jumper Settings

Changing the Chassis Address

While referring to Figures 2-2 and 2-6, complete the following steps to change the chassis address of the SCXI-1000DC:

1. Power off the chassis and remove the power cord from the power entry module.

2. To prevent a shock hazard, wait at least one minute before proceeding to step 3.

3. Using a screwdriver, remove the four (six on some revisions) panhead screws from the front panel of Slot 0.

4. Remove the six screws from the rear panel.

5. Remove the controller from Slot 0.

6. Set all three jumpers for the chassis address you want.

7. Replace the controller in Slot 0.

8. Replace the four (six on some revisions) screws. Do not overtighten.

9. Replace the six screws in the rear panel. Do not overtighten.

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Chapter 2 Configuring and Installing the SCXI Chassis

Selecting Voltage and Replacing the Fuse for the SCXI-1000 and SCXI-1001

If you ordered the chassis with the appropriate part number (the -0x extension of the kit part number corresponds to your geographical region), the voltage tumbler and fuse are correct for operation in your geographical region. Check the voltage on the voltage tumbler to ensure that you have the correct voltage tumbler setting and fuse.

The SCXI chassis can operate with line voltages of 100, 120, 220, and 240 VAC. The voltage tumbler in the power entry module determines the voltage for which the chassis is configured. You can identify the operating voltage by looking at the number on the power entry module when the door that covers the tumbler is closed. The fuse is 5 × 20 mm, which has a current rating relative to the operating voltage. Table 2-4 shows the proper voltage selections and fuse ratings for different regions.

Caution For continued protection, replace fuses only with fuses of the same type and

rating.

Table 2-4. SCXI-1000/1001 Voltage Selection and Fuse Ratings by Region

SCXI

Chassis

Ty pe

SCXI-1000 100 V Japan 1 3/4 A 250 V 5 mm ×

Region/Voltage

120 V 1 1/2 A 250 V 5 mm ×

220 V Swiss 1 1/4 A 250 V 5 mm ×

240 V Australia 1 1/4 A 250 V 5 mm ×

240 V Europe 1 1/4 A 250 V 5 mm ×

240 V North American 1 1/4 A 250 V 5 mm ×

240 V U.K. 1 1/4 A 250 V 5 mm ×

Main

Power Fuse

Quantity

Main Power

Fuse Type

20 mm SLO-BLO

Backplane

Fuse

Quantity

2 1.5 A 125 V LittleFuse

Backplane Fuse Type

R251 01.5 TI

Chapter 2 Configuring and Installing the SCXI Chassis

Table 2-4. SCXI-1000/1001 Voltage Selection and Fuse Ratings by Region (Continued)

SCXI

Chassis

Ty pe

SCXI-1001 100 V Japan 1 2.0 A 250 5 mm ×

Region/Voltage

120 V 1 1.6 A 250 5 mm ×

220 V Swiss 1 1.0 A 250 5 mm ×

240 V Australia 1 1.0 A 250 5 mm ×

240 V Europe 1 1.0 A 250 5 mm ×

240 V North American 1 1.0 A 250 5 mm ×

240 V U.K. 1 1.0 A 250 5 mm ×

Main

Power Fuse

Quantity

Main Power

Fuse Type

20 mm SLO-BLO

Selecting the Voltage

Complete the following steps to select a voltage:

1. Power off the chassis.

2. Remove the power cord from the power entry module.

3. Using a flathead screwdriver, pry the door to the tumbler open from the top.

4. Remove the voltage tumbler.

5. Rotate the tumbler to the appropriate voltage and reinsert it into the power entry module.

6. Close the door.

7. Check to make sure that the voltage showing on the selection tumbler is correct.

8. Reinsert the power cord.

Backplane

Fuse

Quantity

2 4 A 125 V LittleFuse

Backplane Fuse Type

R251 01.5 TI

SCXI Chassis User Manual 2-12 ni.com

Chapter 2 Configuring and Installing the SCXI Chassis

Replacing the Power Entry Module Fuse

Caution Disconnect all power before removing the cover.

Complete the following steps to replace the power entry module fuse:

1. Power off the chassis.

2. Remove the power cord from the power entry module.

3. Using a flathead screwdriver, pry the door to the voltage selection tumbler open from the top.

4. Pull out the fuse drawer.

5. Remove the fuse.

6. Install the new fuse in the drawer.

7. Reinsert the fuse drawer in the right-hand slot with the arrow pointing to the right.

8. Close the door.

9. Reinsert the power cord.

Replacing and Checking Backplane Fuses on the SCXI-1000 and SCXI-1001

In addition to the power entry module fuse, the analog supply lines on the backplane are fused at 1.5 A on the SCXI-1000 chassis and at 4 A on the SCXI-1001 chassis.

If you are making your own modules, fuse the module at 250 mA to avoid blowing the backplane fuses. Fusing the module also better protects the module because a failure can result in a large amount of current drawn, but not enough current drawn to blow the backplane fuses.

On the SCXI-1000, the backplane fuses are located behind the fan. On the SCXI-1001, the backplane fuses are located behind the right-hand fan, near the power entry module, as viewed from the rear of the chassis.

Chapter 2 Configuring and Installing the SCXI Chassis

Complete the following steps to check or replace fuses:

1. Remove the appropriate fan and filter from the rear of the chassis by following the instructions in the Maintaining the Fan Filter section. Make sure to switch the power off and remove the power cord.

2. The fuse marked with a copper + on the backplane is for the positive analog supply, and the fuse marked with a copper – is for the negative analog supply. To check whether a fuse is blown, connect an ohmmeter across the leads. If the reading is not approximately 0 Ω, replace the fuse.

3. Using a pair of needle-nose pliers, carefully extract the fuse.

4. Take a new fuse and bend its leads so the component is 12.7 mm (0.5 in.) long, the dimension between the fuse sockets, and clip the leads to a length of 6.4 mm (0.25 in.).

5. Using the needle-nose pliers, insert the fuse into the socket holes.

6. Repeat, if necessary, for the other fuse.

7. Check the fan filter and, if it is dirty, clean it as described in the

Maintaining the Fan Filter section.

8. Reinstall the fan and filter.

Replacing the Fuses on the SCXI-1000DC

There are two fuses located on the rear panel of the SCXI-1000DC. The input power fuse (F1) is a 6.3 A, 5 × 20 mm time-lag fuse. The internal +5 VDC supply is fused by a 3.15 A, 5 × 20 mm time-lag fuse (F2).

Replacing the Power Entry Fuse and +5 VDC Fuse

Caution For continued protection against fire, replace fuses only with fuses of the same

type and rating.

Complete the following steps to replace the rear panel fuses:

1. Power off the chassis.

2. Remove the power cord from power entry connector J1.

3. Turn the fuse holder counter-clockwise with a screwdriver and pull out the fuse holder to expose the fuse in the housing.

4. Remove the fuse.

5. Install the new fuse.

SCXI Chassis User Manual 2-14 ni.com

Chapter 2 Configuring and Installing the SCXI Chassis

6. Push the fuse holder back into the housing and screw it clockwise until it is tight.

7. Reinsert the power cord.

Replacing and Checking Backplane Fuses

In addition to the power entry and the +5 V supply fuses, the analog supply lines on the backplane are fused at 1.5 A on the SCXI-1000DC chassis.

If you design a special/prototype module, use the SCXI-1181 module and fuse the module at 250 mA to avoid blowing the analog backplane and +5 V supply fuses. Fusing the module better protects the module because a failure can result in a large amount of current drawn, but not enough to blow the backplane and +5 V fuses.

On the SCXI-1000DC, the backplane fuses are located behind the fan. Complete the following steps to check or replace fuses:

1. Remove the appropriate fan and filter from the rear of the chassis by following the instructions in the Maintaining the Fan Filter section. Be sure to switch the power off and remove the power cord.

3. Using a pair of needle-nose pliers, carefully extract the fuse.

4. Take a new fuse and bend its leads so the component is 12.7 mm (0.5 in.) long, the dimension between the fuse sockets, and clip the leads to a length of 6.4 mm (0.25 in.).

5. Using the needle-nose pliers, insert the fuse into the socket holes.

6. Repeat, if necessary, for the other fuse.

7. Check the fan filter and, if it is dirty, clean it as described in the

Maintaining the Fan Filter section.

8. Reinstall the fan and filter.

Chapter 2 Configuring and Installing the SCXI Chassis

Installing the SCXI Chassis

These sections provide information about installing the SCXI chassis.

Installing the SCXI-1000 and SCXI-1001 Chassis

Complete the following steps to install the SCXI-1000 and SCXI-1001 chassis:

1. If necessary, change the chassis address of the box by following the instructions in the Selecting Chassis Addresses section. Unless you are using multiple chassis, skip this step and leave the address at its factory-default setting of 0.

2. Place the SCXI chassis on a sturdy, level surface. Leave at least 10 cm (4 in.) of space behind the chassis for adequate air circulation.

3. Power off the chassis.

4. Make sure the voltage selection tumbler in the power entry module is set for the line voltage of the outlet. Refer to the Selecting the Voltage section if necessary.

5. Insert the female end of the power cord into the power entry module.

6. Insert the male end of the power cord into the wall outlet.

7. Install the modules into the chassis.

8. Install the necessary cabling for the modules. Consult the SCXI module user manual for cabling installation instructions.

9. Install any front and rear filler panels.

10. Power on the chassis.

11. Power on the computer connected to the modules.

12. Refer to the SCXI Quick Start Guide to complete the SCXI system installation.

Installing the SCXI-1000DC Chassis

Complete the following steps to install the SCXI-1000DC chassis:

1. If necessary, change the chassis address by following the instructions in the Selecting Chassis Addresses section. Unless you are using multiple chassis, skip this step and leave the address at its factory-default setting of 0.

2. Place the SCXI chassis on a sturdy, level surface. Leave at least 10 cm (4 in.) of space behind the chassis for adequate air circulation.

3. Place the chassis power switch in the off position.

SCXI Chassis User Manual 2-16 ni.com

4. Make sure the voltage of the power source is between 9.5 and 16 VDC.

5. Insert the power plug into the header J1.

Caution Revision A SCXI-1000DC chassis have screw terminals on the rear panel to

connect the power source. Wire the power source to these screw terminals. Observe the correct polarity, as connecting the power source with the wrong polarity can cause permanent damage to the chassis. NI is not liable for any damage or injuries resulting from improper power connections.

6. Install the modules into the chassis.

7. Install the necessary cabling for the modules. Consult the SCXI module user manual for cabling installation instructions.

8. Install any needed front and rear filler panels.

9. Power on the chassis.

10. Power on the computer connected to the modules.

11. Refer to the SCXI Quick Start Guide to complete the SCXI system installation.

Installing Filler Panels

Chapter 2 Configuring and Installing the SCXI Chassis

The front and rear filler panel accessories protect the inside of the chassis and the installed modules by preventing unwanted material from entering the chassis and damaging modules, or forming conductive paths that can degrade performance. Install all modules first, then start installing filler panels from the edge of a front panel.

Installing Front Filler Panels

Complete the following steps to install front filler panels:

1. Place the panel with the captive screws to the right of the chassis front. Line up the screws with the threaded strip holes.

2. Using a flathead screwdriver, screw the captive screws into the threaded strip holes.

Chapter 2 Configuring and Installing the SCXI Chassis

Installing Rear Panels

Complete the following steps to install rear panels:

1. Place the panel at the rear of the chassis between the two threaded strips. Align the panel so that the serial number faces into the chassis and the screw holes are on the right.

2. Using a flathead screwdriver, screw the two screws through the rear panel into the threaded strip holes.

Maintaining the Fan Filter

The brushless fan(s) on the rear of the SCXI chassis cool the chassis and modules. To keep the fan effective, the fan filter(s) must be clean. Dust and dirt accumulation reduces airflow, making the inside of the chassis hotter, shortening the life of the chassis and modules. Complete the following steps to clean the fan filter(s):

1. Power off the chassis.

2. Remove the power cord from the power entry module.

3. Place the chassis face down on a flat surface so that the fan is on top. If the chassis is so heavily cabled that you cannot easily place it in this position, leave the chassis as it is, but be careful to support the fan during removal and reinstallation to avoid breaking the fan wires.

4. Remove the fan filter. Remove the four screws that secure the fan and filter to the rear of the chassis. When removing the last screw, be careful to hold the fan to avoid breaking the fan wires.

5. Clean the fan filter by moving the filter around under a gentle stream of cold tap water until all the dust is removed. Dry the filter.

6. Replace the fan filter by aligning the fan and filter with the fan holes, making sure that the label side of the fan is face down. Reinstall the four screws and make sure the assembly is secure.

SCXI Chassis User Manual 2-18 ni.com

Specifications

This appendix lists the specifications of the SCXI chassis. These are typical at 25 °C unless otherwise stated.

Electrical Characteristics

V+

Supplies

SCXI-1000/

1000DC

SCXI-1101

Tolerance limits include peaks

Ripple (peak-to-peak) 1.5 V 1.5 V

Max load 680 mA 2.04 A

V–

Tolerance limits include peaks

Ripple (peak-to-peak) 1.5 V 1.5 V

Max load 680 mA 2.04 A

+5 V

Tolerance limits include peaks

Ripple (peak-to-peak) 50 mV 50 mV

Max load 250 mA 600 mA

Power dissipation ................................... 7 W per slot

+18.5 to +25 V +18.5 to +25 V

–18.5 to –25 V –18.5 to –25 V

+4.75 to +5.25 V +4.75 to +5.25 V

Appendix A Specifications

Maximum loads are the supply current for the entire chassis. Scaling the maximum power gives the allotted current per slot, as follows.

Supplies SCXI-1000/1000DC SCXI-1001

V+ 170 mA 170 mA

V– 170 mA 170 mA

+5 V 50 mA 50 mA

Source Power Requirements

Physical

Line Voltage,

47–63 Hz

120 VAC, ±10% 0.6 A 1.25 A

100 VAC, ±10% 0.5 A 1.25 A

240 VAC, ±10% 0.25 A 0.75 A

220 VAC, ±10% 0.25 A 0.75 A

SCXI-1000 SCXI-1001

Max AC Current

SCXI-1000DC

Input voltage...........................................12 VDC nominal

(9.5 to 16.0 VDC)

Max DC operating current

at 9.5 VDC..............................................5.5 A

Weight

SCXI-1000..............................................3.9 kg (8 lb 10 oz)

SCXI-1000DC ........................................3.3 kg (7 lb 5 oz)

SCXI-1001..............................................6.8 kg (14 lb 14 oz)

Refer to Figures A-1 and A-2 for the physical dimensions of the four-slot chassis (SCXI-1000 and SCXI-1000DC) and the 12-slot chassis (SCXI-1001).

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Appendix A Specifications

Figure A-1. Physical Dimensions of the SCXI-1001

Appendix A Specifications

Figure A-2. Physical Dimensions of the SCXI-1000 and SCXI-1000DC

SCXI Chassis User Manual A-4 ni.com

Environmental

Safety

Note For UL and other safety certifications, refer to the product label, or visit

ni.com./hardref.nsf, search by model number or product line, and click the

appropriate link in the Certification column.

Appendix A Specifications

Operating temperature............................ 0 to 50 °C

Storage temperature ............................... –20 to 70 °C

Humidity ................................................ 10 to 90% RH, noncondensing

Maximum altitude.................................. 2,000 meters

Pollution Degree (indoor use only)........ 2

The chassis are designed to meet the requirements of the following standards of safety for electrical equipment for measurement, control, and laboratory use:

• IEC 61010-1, EN 61010-1

• UL 3111-1, UL 61010B-1

• CAN/CSA C22.2 No. 1010.1

Electromagnetic Compatibility

Emissions ............................................... EN 55011 Class A at 10 m.

FCC Part 15A above 1 GHz

Immunity................................................ EN 61326-1:1997 + A2:2001,

Table 1

EMC/EMI............................................... CE, C-Tick, and FCC Part 15

(Class A) Compliant

Note For EMC compliance, operate this device with shielded cabling.

Appendix A Specifications

CE Compliance

Note Refer to the Declaration of Conformity (DoC) for this product for any additional

regulatory compliance information. To obtain the DoC for this product, visit

ni.com/hardref.nsf, search by model number or product line, and click the

appropriate link in the Certification column.

The chassis meet the essential requirements of applicable European Directives, as amended for CE marking, as follows:

Low-Voltage Directive (safety)..............73/23/EEC

Electromagnetic Compatibility

Directive (EMC) .....................................89/336/EEC

SCXI Chassis User Manual A-6 ni.com

Common Questions

My chassis worked fine until I inadvertently removed and reinserted a module while the chassis was on. Now my chassis does not power on. What can I do?

SCXI modules are not hot swapable, so you may have blown a fuse. Refer to Chapter 2, Configuring and Installing the SCXI Chassis, for information on fuse replacement. If replacing the fuse does not correct the problem, you may have damaged the digital bus circuitry or the SCXI module. Please contact NI Technical Support at

My chassis power is on, my modules are configured for multiplexed mode, and I am not getting good data. All the channels read the same voltage even though I know I am putting different voltages into each channel. What is causing this problem?

The SCXI chassis has backplane fuses. One or both of these fuses could be blown. Refer to the Replacing and Checking Backplane Fuses on the

SCXI-1000 and SCXI-1001 section of Chapter 2, Configuring and Installing the SCXI Chassis, for fuse replacement information.

ni.com/support for assistance.

Can I programmatically detect whether or not my chassis is powered on?

Not exactly. You can determine whether or not you can communicate with configured modules through a LabVIEW VI that you can obtain from info code

My chassis will not power on. What should I check?

Check the to make sure the power cord is attached and connected to a power source. Look at the voltage selection tumbler above the power cord receptacle and make sure it is set to the correct voltage. Make sure the power switch is powered on. Verify that the main power fuse is good.

rdtscp.

SCXI_ModuleID_Read in NI-DAQ or using

ni.com/express by entering the

Glossary

Symbol Prefix Value

ppico10

m milli 10

k kilo 10

Numbers/Symbols

° degrees

– negative of, or minus

Ω ohms

± plus or minus

+ positive of, or plus

% percent

+5 V (signal) +5 VDC source signal

–12

–3

A amperes

A/D analog-to-digital

AC alternating current

CCelsius

Glossary

D/A digital-to-analog

DAQ data acquisition—(1) collecting and measuring electrical signals from

sensors, transducers, and test probes or fixtures and processing the measurement data using a computer; (2) collecting and measuring the same kinds of electrical signals with A/D and/or DIO boards plugged into a computer, and possibly generating control signals with D/A and/or DIO boards in the same computer

F (1) Fahrenheit—a temperature measurement scale;

(2) farad—a measurement unit of capacitance

FIFO first-in first-out memory buffer

fuse a protective device that breaks a circuit when a current exceeds a rated value

GND ground

HDLC high-level data-link control

Hz hertz—cycles per second of a periodic signal

I/O input/output—the transfer of data to/from a computer system involving

communications channels, operator interface devices, and/or data acquisition and control interfaces

IEC International Electrotechnical Commission

in. inch or inches

SCXI Chassis User Manual G-2 ni.com

kg kilograms

lb pounds

oz ounces

s seconds

SCXI Signal Conditioning eXtensions for Instrumentation

Glossary

Vvolts

VAC volts, alternating current

VDC volts, direct current

W watts

Index

Symbols

+5 VDC fuse replacement, SCXI-1000DC, 2-14

address selection, 2-8

jumper settings

SCXI-1000 and SCXI-1001

(figure), 2-9

SCXI-1000DC (figure), 2-10 jumperless chassis (note), 2-8 SCXI-1000 and 1001, 2-8 SCXI-1000DC, 2-9

backplane fuse replacement and check procedure

SCXI-1000 and 1001, 2-13 SCXI-1000DC, 2-15

cables, optional equipment, 1-5 CE compliance specifications, A-6 chassis address selection. See address selection configuration

National Instruments 320423H-01, 1001, 1000DC User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

SCXI Chassis User Manual

Worldwide Technical Support and Product Information

National Instruments Corporate Headquarters

Worldwide Offices

Important Information

Warranty

Copyright

Trademarks

Patents

WARNING REGARDING USE OF NATIONAL INSTRUMENTS PRODUCTS

Conventions

Contents

About the SCXI Chassis

What You Need to Get Started

Software Programming Choices

NI-DAQ

National Instruments ADE Software

National Instruments Documentation

Optional Equipment

Chassis Description

Table 2-1. SCXI Chassis Front View Items

Figure 2-1. SCXI-1000 Front View Diagram

Figure 2-2. SCXI-1000DC Front View Diagram

Figure 2-3. SCXI-1001 Front View Diagram

Table 2-2. SCXI-1000/1001 Chassis Rear View Items

Figure 2-4. SCXI-1000 Rear View Diagram

Table 2-3. SCXI-1000DC Chassis Rear View Items

Figure 2-5. SCXI-1001 Rear View Diagram

Figure 2-6. SCXI-1000DC Rear View Diagram

Chassis Uses

Configuring the SCXI Chassis

Selecting Chassis Addresses

SCXI-1000/1001

Figure 2-7. Address Setting Examples

SCXI-1000DC

Figure 2-8. SCXI-1000DC Chassis Address Jumper Settings

Selecting Voltage and Replacing the Fuse for the SCXI-1000 and SCXI-1001

Table 2-4. SCXI-1000/1001 Voltage Selection and Fuse Ratings by Region

Selecting the Voltage

Replacing the Power Entry Module Fuse

Replacing and Checking Backplane Fuses on the SCXI-1000 and SCXI-1001

Replacing the Fuses on the SCXI-1000DC

Replacing the Power Entry Fuse and +5 VDC Fuse

Replacing and Checking Backplane Fuses

Installing the SCXI Chassis

Installing the SCXI-1000 and SCXI-1001 Chassis

Installing the SCXI-1000DC Chassis

Installing Filler Panels

Installing Front Filler Panels

Installing Rear Panels

Maintaining the Fan Filter

Figure A-1. Physical Dimensions of the SCXI-1001

Figure A-2. Physical Dimensions of the SCXI-1000 and SCXI-1000DC

Glossary

Numbers/Symbols

Index

Symbols