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Manual National Instruments NI 9481

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  • National Instruments NI 9481 - page 1

    OPERATING INSTRUCTIONS AND S PECIFICATIONS NI 9481 4-Channel SPST Electrom echanical Relay Mo dule ni.com/manuals Deutsch Français ...

  • National Instruments NI 9481 - page 2

    NI 9481 Operating I nstruction s and Specificati ons 2 ni.com This doc u ment describes ho w to u se the Nationa l Instr u ments 9481 and incl u des specifications and termin al assign ments for the NI 9481. Vi s i t ni.com/info and enter rd s oftwarever s ion to determine which software yo u need for the mod u le s yo u are u sing. For information ...

  • National Instruments NI 9481 - page 3

    © National Inst ruments Corp. 3 NI 9481 Operating Instructi ons and Specific ations Safety Guidelines Operate the NI 9481 only as described in these operating instr u ctions. Hot Surface This icon denotes that the component may be hot. T o u ching this component may res u lt in bodily inj u ry . Safety Guidelines for Hazardous V oltages If hazardo ...

  • National Instruments NI 9481 - page 4

    NI 9481 Operating I nstruction s and Specificati ons 4 ni.com Caution When mod u le terminals are hazardo u s voltage LIVE (>42.4 V pk /60 VDC), yo u m u st ens u re that devices and circ u its connected to the mod u le are properly ins u lated from h u man contact . Y o u m u st u se the NI 9932 connector backshell kit to ens u re that the term ...

  • National Instruments NI 9481 - page 5

    © National Inst ruments Corp. 5 NI 9481 Operating Instructi ons and Specific ations Safety Guidelines fo r Hazardous Loca tions The NI 9481 is s u itable for u se in Class I, Di vision 2, Gro u ps A, B, C, D, T4 h azardo u s locations; Class I, Zone 2, AEx nC IIC T4 hazardo u s locations; and nonhazardo u s locations onl y . Follo w these g u idel ...

  • National Instruments NI 9481 - page 6

    NI 9481 Operating I nstruction s and Specificati ons 6 ni.com Special Conditions fo r Marine Appli cations Some mod u les are Lloyd’ s Register (LR) T ype Approved for marine applications. T o verify Llo yd’ s Register cert if ication, visit ni.com/certification and search for the LR certificate, or look for the Lloyd’ s Register mark on the ...

  • National Instruments NI 9481 - page 7

    © National Inst ruments Corp. 7 NI 9481 Operating Instructi ons and Specific ations Connecting the NI 9481 The NI 9481 has a 10-terminal deta chable scre w-terminal connector that provides connec tions for 4 electromechanical relay cha nnels. Figure 2. NI 9481 T erminal Assignments 03 0 1 2 3 4 5 6 7 8 9 CH0a CH0b CH1a CH1b CH2a CH2b CH3a CH3b NC ...

  • National Instruments NI 9481 - page 8

    NI 9481 Operating I nstruction s and Specificati ons 8 ni.com Each electromechani cal relay ch annel has two inter changeable terminals, CHa and CHb . Each channel has an L ED that indicates the st ate of the channel. When a channel LED is lit, the channel i s on. When the LED is dark, the channel is of f. The LEDs are disabl ed when the chassis is ...

  • National Instruments NI 9481 - page 9

    © National Inst ruments Corp. 9 NI 9481 Operating Instructi ons and Specific ations Note Yo u m u st u se 2-wire ferr u les to create a sec u re connection when connecting mo re than one wire to a sing le t ermi nal on t he NI 9481. When the channel is t u rned on, the terminal connected to the load dri ves c u rrent or applies voltage to t he loa ...

  • National Instruments NI 9481 - page 10

    NI 9481 Operating I nstruction s and Specificati ons 10 ni.com Figure 4. 10-T erminal Detachable Screw-T e rminal Connector with Ferrule Sleep Mode This mod u le s u pports a low-po wer sleep mode. S u pport for sleep mode at the system le vel depe nds on the chassis that the mod u le is pl u gged into. Refer to the chassis man u al for information ...

  • National Instruments NI 9481 - page 11

    © National Inst ruments Corp. 11 NI 9481 Operating Instructi ons and Specif ications T ypically , when a system is in sleep mode, yo u cannot comm u nicate with the mod u les. In sleep mode, the system cons u mes minimal po wer and may diss ipat e less heat than it does in normal mode. Refer to the Specifications section for more information abo u ...

  • National Instruments NI 9481 - page 12

    NI 9481 Operating I nstruction s and Specificati ons 12 ni.com Switching capacity (resisti ve load) Switching voltage ......... ........... ... 60 VDC max, 250 V rms max Switching c u rrent, per channel One channel on ................. ... 4 A ma x at 30 VDC, 1 A max at 60 VDC, 4 A max at 250 V rms All channels on ............... ..... 2 A max at 3 ...

  • National Instruments NI 9481 - page 13

    © National Inst ruments Corp. 13 NI 9481 Operating Instructi ons and Specific ations MTBF .......... ........... ............ ........... ... 460,321 ho u rs at 25 °C; Bellcore Iss u e 2, Method 1, Case 3, Limited P art Stress Method Note Contact NI for Bellcore MTBF specifications at other temperat u res or for MIL-HDBK-21 7F specifications. Pow ...

  • National Instruments NI 9481 - page 14

    NI 9481 Operating I nstruction s and Specificati ons 14 ni.com Physical Characteristics If yo u need to clean the mod u l e, wipe it with a dry to wel. Screw-terminal wiring ............ .......... 12 to 24 A WG copper cond u ctor wire with 10 mm (0.39 in.) of ins u lation stripped from the end To r q u e for screw terminals .......... ..... 0.5 to ...

  • National Instruments NI 9481 - page 15

    © National Inst ruments Corp. 15 NI 9481 Operating Instructi ons and Specific ations that provided b y a standard wall o u tlet, for e xample, 115 V for U.S. or 230 V for E u rope. Caution Do not co nnect the NI 9481 to sign als or u se for meas u rements within Meas u rement Categories III or IV . Isolation Channel-to-channel Contin u o u s ..... ...

  • National Instruments NI 9481 - page 16

    NI 9481 Operating I nstruction s and Specificati ons 16 ni.com Safety Standards This prod u ct meets the req u irements of the following standards of safety for electrica l eq u ipment for meas u rement, control, and laboratory u se: • IEC 61010-1, EN 61010-1 • UL 61010-1, CSA 61010-1 Note For UL and other safety certif ications, refer to the p ...

  • National Instruments NI 9481 - page 17

    © National Inst ruments Corp. 17 NI 9481 Operating Instructi ons and Specif ications Note For the standards applied to assess the EMC of this prod u ct, refer to the Online Product Certification section. Note For EMC compliance, operate this de vice with shielded cabling. CE Compliance This prod u ct meets the essent ial req u irem ents of applic ...

  • National Instruments NI 9481 - page 18

    NI 9481 Operating I nstruction s and Specificati ons 18 ni.com Shock and Vibration T o meet t hese specif ications, yo u m u st panel mo u nt the system and either af f ix ferr u les to the ends of the terminal wires or u se the NI 9932 backshell kit to protect the connections. Operating vibration, sin u soidal (IEC 60068-2-6) .. ............ 5 g, ...

  • National Instruments NI 9481 - page 19

    © National Inst ruments Corp. 19 NI 9481 Operating Instructi ons and Specific ations Operating h u midity (IEC 60068-2-56)....... ........... ............ 10 to 90% RH, noncondensing Storage h u midity (IEC 60068-2-56)....... ........... ............ 5 to 95% RH, noncondensing Maxim u m altit u de.......... ......... .......... 2,000 m Poll u tion ...

  • National Instruments NI 9481 - page 20

    NI 9481 Operating I nstruction s and Specificati ons 20 ni.com Waste Electrical and Electronic Equipment (WEEE) EU Customers At the end of the life c ycle, all prod u cts must be sent to a WEEE re c ycling center . For more information abo u t WEEE recycling ce nters and National Instr u ments WEEE initiati ves, visit ni.com/ environment/weee . ⬉ ...

  • National Instruments NI 9481 - page 21

    © National Inst ruments Corp. 21 NI 9481 Operating Instructi ons and Specific ations Where to Go for Support The National Instr u ments W eb site is yo u r comple te reso u rce for technical s u pport. At ni.com/ s upport yo u have access to ev erything from tro u bleshooting and applic ation dev elopment self-help reso u rces to email and phone a ...

  • National Instruments NI 9481 - page 22

    NI 9481 Operating I nstruction s and Specificati ons 22 ni.com K orea 82 02 3451 3400, Lebanon 961 (0) 1 33 28 28, Malaysia 1800 887710, Mexico 0 1 800 010 0793, Netherlands 31 (0) 348 433 466, New Zealand 0800 553 322, Norway 47 (0) 66 90 76 60, Poland 48 22 3390150, Port u gal 351 210 311 210, R u ssia 7 495 783 6851, Singapore 1800 226 5886, Slo ...

  • National Instruments NI 9481 - page 23

    © 2003–2008 Nati onal Instruments Corp. All rights reserved. 373507D-01 Sep08 National Instruments, NI, n i.com, and LabVIEW are trademarks of National Instrument s Corporation. Refer to the Terms of Use section on ni.com/legal for more information about Natio nal Instruments trademarks. Other product and company names ment ioned herein are trad ...

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Documents that we receive from a manufacturer of a National Instruments NI 9481 can be divided into several groups. They are, among others:
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A manual, also referred to as a user manual, or simply "instructions" is a technical document designed to assist in the use National Instruments NI 9481 by users. Manuals are usually written by a technical writer, but in a language understandable to all users of National Instruments NI 9481.

A complete National Instruments manual, should contain several basic components. Some of them are less important, such as: cover / title page or copyright page. However, the remaining part should provide us with information that is important from the point of view of the user.

1. Preface and tips on how to use the manual National Instruments NI 9481 - At the beginning of each manual we should find clues about how to use the guidelines. It should include information about the location of the Contents of the National Instruments NI 9481, FAQ or common problems, i.e. places that are most often searched by users in each manual
2. Contents - index of all tips concerning the National Instruments NI 9481, that we can find in the current document
3. Tips how to use the basic functions of the device National Instruments NI 9481 - which should help us in our first steps of using National Instruments NI 9481
4. Troubleshooting - systematic sequence of activities that will help us diagnose and subsequently solve the most important problems with National Instruments NI 9481
5. FAQ - Frequently Asked Questions
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