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SCXI-1338 Installation Guide

2

ni.com

Number 1 and 2 Phillips-head screwdrivers

1/8 in. flathead screwdriver

Long-nose pliers

Wire cutter

Wire insulation stripper

Conventions

The following conventions are used in this guide:

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.

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, and code excerpts.

Safety Information

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 can 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 disconnect all field
power prior to removing covers or shields.

Equipment described in this document must be used in an Installation Category II

1

environment per IEC 60664-1. This category requires local level supply mains-connected
installation.

1

Category II refers to local-level power distribution, such as that provided by a standard wall outlet.

Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

Содержание SCXI-1338

Страница 1: ...l service in house repair center WE BUY USED EQUIPMENT Sell your excess underutilized and idle used equipment We also offer credit for buy backs and trade ins www artisantg com WeBuyEquipment REMOTE INSPECTION Remotely inspect equipment before purchasing with our interactive website at www instraview com LOOKING FOR MORE INFORMATION Visit us on the web at www artisantg com for more information on ...

Страница 2: ...onnect to the SCXI 1120 SCXI 1120D SCXI 1125 and SCXI 1126 modules The SCXI 1338 has eight 249 Ω precision resistors to convert current to voltage when measuring 0 20 mA and 4 20 mA process current sources The terminal block has 18 screw terminals for easy connection Eight pairs of screw terminals are for signal connection to the eight module inputs One pair of terminals connects to the SCXI chass...

Страница 3: ...s programs subprograms subroutines device names functions operations variables filenames and extensions and code excerpts Safety Information 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 haza...

Страница 4: ...up to 300 V When connecting or disconnecting signal lines to the SCXI terminal block screw terminals make sure the lines are powered off Potential differences between the lines and the SCXI ground can create a shock hazard while you connect the lines 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 f...

Страница 5: ...cquires the voltage To convert the voltage read by the SCXI module to the actual current being measured use the following formula current measured voltage 249 The voltage measured for a 4 20 mA current source is in the range of 0 996 4 98 VDC The SCXI 1338 can measure both current sources and voltage sources When measuring voltage signals you must remove the current loop resistor for that input ch...

Страница 6: ...the signal wires through the strain relief opening You can add insulation or padding if necessary 4 Prepare your signal wire by stripping the insulation no more than 7 mm 5 Connect the wires to the screw terminals by inserting the stripped end of the wire fully into the terminal No bare wire should extend past the screw terminal Exposed wire increases the risk of a short circuit and equipment fail...

Страница 7: ...ct the module front connector to its mating connector on the terminal block 2 Tighten the top and bottom thumbscrews on the back of the terminal block to hold it securely in place 1 Strain Relief Bar 2 Strain Relief Screws 3 Safety Ground Lug 4 Mating Connector 5 Thumbscrew 6 Top Cover Screws 7 Top Cover 3 4 2 1 5 6 7 Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www ar...

Страница 8: ...voltage signal common mode Channel to ground Each channel must remain within 300 Vrms or 300 VDC of ground Channel to channel Each channel must remain within 300 Vrms or 300 VDC of the voltage applied to any other channel Maximum input current 20 mA Field wiring connectivity Screw terminals for signals 16 8 pairs Screw terminals for functional earth ground 2 Safety earth ground lugs 1 Strain relie...

Страница 9: ...elative humidity 10 to 90 noncondensing Pollution degree 2 Altitude maximum 2000 m Safety Designed in accordance with IEC 61010 1 UL 3111 1 and CAN CSA C22 2 No 1010 1 for electrical measuring and test equipment Installation Category II Pollution degree 2 Electromagnetic Compatibility EMC EMI CE C Tick and FCC Part 15 Class A Compliant Electrical emissions EN 55011 Class A at 10 m FCC Part 15A abo...

Страница 10: ...port phone numbers e mail addresses and current events If you have searched the technical support resources on our Web site and still cannot find the answers you need contact your local office or National Instruments corporate For telephone support in the United States dial 512 795 8248 For telephone support outside the United States contact your local branch office Australia 03 9879 5166 Austria ...

Страница 11: ...l service in house repair center WE BUY USED EQUIPMENT Sell your excess underutilized and idle used equipment We also offer credit for buy backs and trade ins www artisantg com WeBuyEquipment REMOTE INSPECTION Remotely inspect equipment before purchasing with our interactive website at www instraview com LOOKING FOR MORE INFORMATION Visit us on the web at www artisantg com for more information on ...

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