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National Instruments NI 9481 manual

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Table of contents for the manual

  • Page 1

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

  • 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[...]

  • 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[...]

  • 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[...]

  • 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[...]

  • 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 [...]

  • 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 [...]

  • 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[...]

  • 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[...]

  • 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[...]

  • 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[...]

  • 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[...]

  • 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[...]

  • 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[...]

  • 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 .....[...]

  • 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[...]

  • 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 [...]

  • 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, [...]

  • 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[...]

  • 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 . ⬉[...]

  • 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[...]

  • 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[...]

  • 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[...]