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OPERATING INSTRUCTIONS AND S PECIFICATIONS NI 9476 32-Channel, 24 V, Sourcing Digital Output Module ni.com/manuals Deutsch Français.
NI 9476 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 9 476 and incl u des specif ications and pin assignments for the NI 9476. 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 9476 Operating Instructi ons and Specific ations Safety Guidelines Operate the NI 94 76 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 9476 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 9476 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 Llo yd’ s Register cert ification, visit ni.
NI 9476 Operating I nstruction s and Specificati ons 6 ni.com Connecting the NI 9476 The NI 9476 has a 37-pin DSUB connector that pro vides connections fo r 32 digital o u tp u t channels.
© National Inst ruments Corp. 7 NI 9476 Operating Instructi ons and Specific ations Each channel has a DO pin to which yo u can connect a digital inp u t de vice. The 32 digital o u tp u t channels are inte rnally referenced to COM. Yo u m u st connect an external po wer s u pply to the NI 9476.
NI 9476 Operating I nstruction s and Specificati ons 8 ni.com Yo u can directly connect the NI 9476 to a va riety of ind u strial de vices s u ch as solenoids, motors, act u ators, relays, and lamps. Make s u re the devices yo u connect to the NI 9476 are co mpatible with the o u tp u t specif ications of t he mod u le.
© National Inst ruments Corp. 9 NI 9476 Operating Instructi ons and Specific ations Increasing Current Drive Each channel ha s a contin u o u s o u tp u t c u rrent of 250 mA. If yo u want to increase the o u tp u t c u rrent to a de vice, yo u can connect any n u mber of channels together in parallel.
NI 9476 Operating I nstruction s and Specificati ons 10 ni.com Protecting the Mo dule from Flyback V oltage s If the mod u le is switching an ind u ctive or ener gy-storing device s u ch as a solenoid, motor , or relay , and the device does not ha ve flyback protection, install an exte rnal flyback diode as sho wn in Fig u re 4.
© National Inst ruments Corp. 11 NI 9476 Operating Instructi ons and Specific ations I/O Protection The NI 9476 is protected against ov erc u rrent, inr u sh, and short-circ u it conditions in accordance with IEC 1131-2.
NI 9476 Operating I nstruction s and Specificati ons 12 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. 13 NI 9476 Operating Instructi ons and Specific ations Specifications The follo wing spec ific ations are typical for the range – 40 to 70 °C u nless otherwise noted. All v oltages are relat iv e to COM u nless otherwise noted.
NI 9476 Operating I nstruction s and Specificati ons 14 ni.com Contin u o u s o verv ol tage protection ( V sup ) ......... ......... ........... ... u p to 40 V max Re versed-v oltage prot ection ............. None C u rrent limitin g ...... ........
© National Inst ruments Corp. 15 NI 9476 Operating Instructi ons and Specific ations MTBF .......... ........... .................. ........ 1,091,425 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.
NI 9476 Operating I nstruction s and Specificati ons 16 ni.com Safety Maximum Voltage 1 Connect only v oltages that are within the follo wing lim its. V s u p -to-COM.
© National Inst ruments Corp. 17 NI 9476 Operating Instructi ons and Specific ations Isolation Voltages Channel-to-channel ...... ............. ........ No i solation betwe en channels Channel-to-earth gro u nd Contin u o u s ................ .......
NI 9476 Operating I nstruction s and Specificati ons 18 ni.com Hazardous Locations U.S. (UL) ........ ........... ........... ......... ... Class I, Division 2, Gro u ps A, B, C, D, T4; Class I, Zone 2, AEx nC IIC T4 Canada (C-UL) ............ .......
© National Inst ruments Corp. 19 NI 9476 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)....... ........... ............
NI 9476 Operating I nstruction s and Specificati ons 20 ni.com Electromagnetic Compatibility This prod u ct is designed to meet the req u ire ments of the follo wing standards of EMC for electrical eq.
© National Inst ruments Corp. 21 NI 9476 Operating Instructi ons and Specific ations CE Compliance This prod u ct meets the essent ial req u irem ents of app licable E u ropean directi ves, as amende.
NI 9476 Operating I nstruction s and Specificati ons 22 ni.com For additional en viro nmental information, refer to the NI a nd the Environment W eb page at ni.com/environment . This page contains the en vironmental reg u lations and direct i ves with which NI complies, as well as othe r en vironmental information not incl u ded in this doc u ment.
© National Inst ruments Corp. 23 NI 9476 Operating Instructions and Specific ations 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.
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