Instruction/ maintenance manual of the product NI 9425 National Instruments
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OPERATING INSTRUCTIONS AND S PECIFICATIONS NI 9425 32-Channel, 24 V Sinking Digital Input Mo dule ni.com/manuals Deutsch Français.
NI 9425 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 9 425 and incl u des specif ications and pin assignments for the NI 9425. 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 9425 Operating Instructi ons and Specific ations Safety Guidelines Operate the NI 9425 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 9425 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.
© National Inst ruments Corp. 5 NI 9425 Operating Instructi ons and Specific ations 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 . Caution For Zone 2 applications, connected signals m u st be within the following limit: Capacitance .
NI 9425 Operating I nstruction s and Specificati ons 6 ni.com Special Conditions fo r Marine Appli cations Some mod u les are Lloyd’ s Re gister (LR) T ype Approv ed for marine applications.
© National Inst ruments Corp. 7 NI 9425 Operating Instructi ons and Specific ations Connecting the NI 9425 The NI 9425 has a 37-pin DSUB connector that pro vides connections for 32 sim u ltaneo u sly-sampled digital inp u t channels.
NI 9425 Operating I nstruction s and Specificati ons 8 ni.com Each channel has a DI pin to which yo u can connect a digital inp u t signal. The NI 9425 has fo u r common pins, COM, that are internally connected to the is olated reference of the mod u le.
© National Inst ruments Corp. 9 NI 9425 Operating Instructi ons and Specific ations Figure 2. Connecting a Device to the NI 9425 (Three-Wire Device Shown) The NI 9425 channel re gisters as ON when the so u rcing-o u tp u t de vice applies a voltage or dri ves a c u rrent that is in the inp u t ON range to the DI pin.
NI 9425 Operating I nstruction s and Specificati ons 10 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. 11 NI 9425 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 9425 Operating I nstruction s and Specificati ons 12 ni.com I/O protection Inp u t v oltage 8 channels ....... ........... .......... 60 VDC ma x 32 channels ....... .............. ..... 30 VDC max Re verse-biased voltage 8 channels ....... .......
© National Inst ruments Corp. 13 NI 9425 Operating Instructi ons and Specific ations MTBF .......... ........... .................. ........ 1,256,699 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 9425 Operating I nstruction s and Specificati ons 14 ni.com Safety Safety Voltages Connect only v oltages that are within the follo wing lim its. Channel-to-COM .. ........... ............ ..... 60 VDC max Isolation Channel-to-channel ... .........
© National Inst ruments Corp. 15 NI 9425 Operating Instructi ons and Specific ations Caution Do not co nnec t the NI 9425 t o sign als or u se for meas u rements within Meas u rement Categories II, III, or IV . Hazardous Locations U.S. (UL) .........
NI 9425 Operating I nstruction s and Specificati ons 16 ni.com Note For UL and other safety certif ications, refer to the prod u ct label or the Online Product Certification section.
© National Inst ruments Corp. 17 NI 9425 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 v es as follo .
NI 9425 Operating I nstruction s and Specificati ons 18 ni.com Operating shock (IEC 60068-2-27)........... ........... ........ 30 g, 11 ms half sine, 50 g, 3 ms half sine, 18 shocks at 6 orientations.
© National Inst ruments Corp. 19 NI 9425 Operating Instructi ons and Specific ations Maxim u m altit u de.......... ......... .......... 2,000 m Poll u tion Degree (IEC 60664) .......... 2 Environmental Mana gement NI is committed to designing and man u fact u ring prod u cts in an en vironmentally responsible manner .
NI 9425 Operating I nstructions and Specificati ons 20 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. 21 NI 9425 Operating Instructions and Specific ations telephone s u pport o u tside the United Stat es, contact yo u r local branch off ice: A u stralia 1800 300 800, A .
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An important point after buying a device National Instruments NI 9425 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought National Instruments NI 9425 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data National Instruments NI 9425 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, National Instruments NI 9425 you will learn all the available features of the product, as well as information on its operation. The information that you get National Instruments NI 9425 will certainly help you make a decision on the purchase.
If you already are a holder of National Instruments NI 9425, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime National Instruments NI 9425.
However, one of the most important roles played by the user manual is to help in solving problems with National Instruments NI 9425. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device National Instruments NI 9425 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
