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National Instruments Corporation

9

SCXI-1338 Installation Guide

Note

This device should only be operated with shielded cabling for full EMC and EMI

compliance. See the Declaration of Conformity for this product for any additional
regulatory compliance information.

Technical Support Resources

NI Web Support

National Instruments Web support is your first stop for help in solving
installation, configuration, and application problems and questions. Online
problem-solving and diagnostic resources include frequently asked
questions, knowledge bases, product-specific troubleshooting wizards,
manuals, drivers, software updates, and more. Web support is available
through the Technical Support section of

ni.com

Worldwide Support

National Instruments has offices located around the world to help address
your support needs. You can access our branch office Web sites from the
Worldwide Offices section of

ni.com

. Branch office Web sites provide

up-to-date contact information, support 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 0662 45 79 90 0, Belgium 02 757 00 20,
Brazil 011 284 5011, Canada (Calgary) 403 274 9391,
Canada (Ottawa) 613 233 5949, Canada (Québec) 514 694 8521,
China (Shanghai) 021 6555 7838, China (ShenZhen) 0755 3904939,
Denmark 45 76 26 00, Finland 09 725 725 11, France 01 48 14 24 24,
Germany 089 741 31 30, Greece 30 1 42 96 427, Hong Kong 2645 3186,
India 91805275406, Israel 03 6120092, Italy 02 413091,
Japan 03 5472 2970, Korea 02 596 7456, Mexico 5 280 7625,
Netherlands 0348 433466, New Zealand 09 914 0488,
Norway 32 27 73 00, Poland 0 22 528 94 06, Portugal 351 1 726 9011,
Singapore 2265886, Spain 91 640 0085, Sweden 08 587 895 00,
Switzerland 056 200 51 51, Taiwan 02 2528 7227,
United Kingdom 01635 523545

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

Summary of Contents for SCXI-1338

Page 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 ...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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 ...

Page 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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