Gebruiksaanwijzing /service van het product NI 9478 van de fabrikant National Instruments
Ga naar pagina of 32
OPERATING INSTRUCTIONS AND S PECIFICATIONS NI 9478 16-Channel, 0–50 V, Sinking Digital Output Module with Programmable Current Limits ni.com/manuals Deutsch Français.
NI 9478 Operating I nstruction s and Specificati ons 2 ni.com This doc u ment describes ho w to u se the National Instr u ments 9478 and incl u des specif ications and pin assignments for the NI 9478. 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 les yo u are u sing.
© National Inst ruments Corp. 3 NI 9478 Operating Instructi ons and Specific ations Safety Guidelines Operate the NI 9478 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 .
NI 9478 Operating I nstruction s and Specificati ons 4 ni.com Caution S u bstit u tion of components may impair s u itability for Class I, Division 2. Caution For Zone 2 applications, install the system in an enclos u re rated to at least IP 54 as defined b y IEC 60529 an d EN 60529 .
© National Inst ruments Corp. 5 NI 9478 Operating Instructi ons and Specific ations Special Conditions fo r Marine Appli cations Some mod u les are Lloyd’ s Re gister (LR) T ype Approv ed for marine applications. T o verify Lloyd’ s Register certification, visit ni.
NI 9478 Operating I nstruction s and Specificati ons 6 ni.com Connecting the NI 9478 The NI 9478 has a 37-pin DSUB connector that pro vides connections for the 16 digital o u tp u t channels.
© National Inst ruments Corp. 7 NI 9478 Operating Instructi ons and Specific ations Each channel of the NI 9478 has a DO pin to which yo u can connect the load yo u want to control. Each channel also has a COM pin. National Instr u ments recommends yo u provide independent COM wiring for each channel to min imize c u rrent flo w in the COM wiring.
NI 9478 Operating I nstruction s and Specificati ons 8 ni.com Connect the de vice to DO and the positi ve lead o f the po wer s u pply . Refer to Fig u re 2 for an ill u stration of how to connect a device to the NI 9478.
© National Inst ruments Corp. 9 NI 9478 Operating Instructi ons and Specific ations Protecting the Mo dule from Flyback V oltage s If the mod u le is switching an ind u ctive or ener gy-storing devic.
NI 9478 Operating I nstruction s and Specificati ons 10 ni.com Using Long Cables The ind u ctance of the ca bling that co nnects the NI 947 8, the loads, and the e xternal s u pply stores u p ener gy when a channel is on and passing c u rrent thro u gh the cables.
© National Inst ruments Corp. 11 NI 9478 Operating Instructi ons and Specific ations Yo u can red u ce the ef fect iv e length of the cabl e by adding a capacitor close to the NI 9478 across the power s u pply leads and adding a diode from the digital o u tp u t line to the V s u p pin line.
NI 9478 Operating I nstructions and Specifications 12 ni .com I/O Protection The NI 9478 pro vides protection against overc u rrent and short-circ u it conditions. Output Current Limit Thresholds The NI 9478 pro vides two config u rable c u rrent limit thresholds for the mod u le, Limit A and Limit B.
© National Inst ruments Corp. 13 NI 9478 Operating Instructions and Specific ations Some applications req u ire a large inr u sh c u rrent when a channel is fir st t u rned on.
NI 9478 Operating I nstructions and Specifications 14 ni .com Overcurrent Refresh The NI 9478 pro vides an overc u rrent refresh setting that enables a channel to a u tomatically reco ver within the specif ied overc u rrent refresh period if the channel e xceeds its c u rrent limit threshold.
© National Inst ruments Corp. 15 NI 9478 Operating Instructions and Specific ations for that ch annel. Use the fo llowing eq u ation to ca lc u late the percentage of the total po wer b u dget each o u tp u t channel u ses in yo u r application.
NI 9478 Operating I nstructions and Specifications 16 ni .com Example One Yo u are driving a load with 2.0 meters of cable thro u gh a cy cle in which the NI 9478 is on and passing 1.25 A of c u rrent for 40 μ s, then off for 10 μ s. The o u tp u t period is 50 μ s (40 μ s + 10 μ s) so the o u tp u t freq u ency is 20 kHz.
© National Inst ruments Corp. 17 NI 9478 Operating Instructions and Specific ations Example T wo Yo u are driving a load with 2.0 meters of cable thro u gh a cy cle in which the NI 9478 first is constantly on and passing 3 A of c u rrent for 0.25 seconds, then dri ves th e load at 20 kHz with 1.
NI 9478 Operating I nstructions and Specifications 18 ni.com 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 abo u t s u pport for sleep mode.
© National Inst ruments Corp. 19 NI 9478 Operating Instructions and Specific ations Specifications The follo wing specificat ions are typical for the range – 40 to 70 °C u nless otherwise noted. All v oltages are relativ e to COM u nless otherwise noted.
NI 9478 Operating I nstructions and Specifications 20 ni.com Switched o u tp u t c u rrent (10 kHz) 1 , per channel All channels on .......... ............ ..... 1 A max Fo u r channels on ................ ........ 2 A max One channel on . ...........
© National Inst ruments Corp. 21 NI 9478 Operating Instructions and Specific ations Overc u rrent protection threshold selection per ch annel........ ............ ..... Limit A, Limit B, or No Limit Overc u rrent sh u tof f response time .... 1 μ s Overc u rrent refresh conf ig u ration .
NI 9478 Operating I nstructions and Specifications 22 ni.com Power Requirements Power cons u mption fr om chassis Active mode ............ ........... ........ 1 W max Sleep mode .......... ......... ........... ... 25 μ W max Thermal dissipation (at 70 °C) Active mode .
© National Inst ruments Corp. 23 NI 9478 Operating Instructions and Specific ations Safety Maximum Voltage 1 Connect only v oltages that are within the follo wing limits.
NI 9478 Operating I nstructions and Specifications 24 ni.com Isolation Voltages Channel-to-channel ...... ............. ........ No isolation bet ween channels Channel-to-earth gro u nd Contin u o u s ................... ......... ..... 60 VDC, Meas u rement Category I W ithstand .
© National Inst ruments Corp. 25 NI 9478 Operating Instructions and Specific ations Hazardous Locations U.S. (UL) ........ ........... ......... ........... ... Class I, Di vision 2, Gro u ps A, B, C, D, T4; Class I, Zone 2, AEx nA IIC T4 Canada (C-UL) .
NI 9478 Operating I nstructions and Specifications 26 ni.com 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.
© National Inst ruments Corp. 27 NI 9478 Operating Instructions and Specific ations Electromagnetic Compatibility This prod u ct is designed to meet the req u ire ments of the following standards of .
NI 9478 Operating I nstructions and Specifications 28 ni.com ni.com/certification , search by mod u le n u mber or prod u ct line, and click the appropriate link in the Certification col u mn. Environmental Mana gement National Instr u ments is committe d to designing and man u fact u ring prod u cts in an en vironmentally res ponsible manner .
© National Inst ruments Corp. 29 NI 9478 Operating Instructions and Specific ations ⬉ᄤֵᙃѻક∵ᶧࠊㅵ⧚ࡲ⊩ ˄Ё RoHS ˅ Ёᅶ᠋ National Instruments ヺড়Ё⬉ᄤֵᙃ ѻકЁ䰤ࠊՓ⫼ᶤѯ᳝ᆇ⠽䋼ᣛҸ (RoHS) DŽ݇Ѣ National Instruments Ё RoHS ড়㾘ᗻֵᙃˈ䇋ⱏᔩ ni.
NI 9478 Operating I nstructions and Specifications 30 ni.com Where to Go for Support The National Instr u ments W eb site is yo u r complete reso u rce for technical s u pport.
© National Inst ruments Corp. 31 NI 9478 Operating Instructions and Specific ations K orea 82 02 3451 3400, Lebanon 961 (0) 1 33 28 28, Malaysia 1800 887710, Mexico 0 1 800 010 0793, Netherlands 31 (.
© 2007–2008 Nati onal Instruments Corp. All rights reserved. 374612D-01 Feb08 National Instruments, NI, n i.com, and LabVIEW are trademarks of National Instruments C orporation. Refer to the Terms of Use section on ni.com/legal for more information about National Instruments trademarks.
Een belangrijk punt na aankoop van elk apparaat National Instruments NI 9478 (of zelfs voordat je het koopt) is om de handleiding te lezen. Dit moeten wij doen vanwege een paar simpele redenen:
Als u nog geen National Instruments NI 9478 heb gekocht dan nu is een goed moment om kennis te maken met de basisgegevens van het product. Eerst kijk dan naar de eerste pagina\'s van de handleiding, die je hierboven vindt. Je moet daar de belangrijkste technische gegevens National Instruments NI 9478 vinden. Op dit manier kan je controleren of het apparaat aan jouw behoeften voldoet. Op de volgende pagina's van de handleiding National Instruments NI 9478 leer je over alle kenmerken van het product en krijg je informatie over de werking. De informatie die je over National Instruments NI 9478 krijgt, zal je zeker helpen om een besluit over de aankoop te nemen.
In een situatie waarin je al een beziter van National Instruments NI 9478 bent, maar toch heb je de instructies niet gelezen, moet je het doen voor de hierboven beschreven redenen. Je zult dan weten of je goed de alle beschikbare functies heb gebruikt, en of je fouten heb gemaakt die het leven van de National Instruments NI 9478 kunnen verkorten.
Maar de belangrijkste taak van de handleiding is om de gebruiker bij het oplossen van problemen te helpen met National Instruments NI 9478 . Bijna altijd, zal je daar het vinden Troubleshooting met de meest voorkomende storingen en defecten #MANUAl# samen met de instructies over hun opplosinge. Zelfs als je zelf niet kan om het probleem op te lossen, zal de instructie je de weg wijzen naar verdere andere procedure, bijv. door contact met de klantenservice of het dichtstbijzijnde servicecentrum.
