National Instruments NI USB-9472 manual


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Table of contents for the manual

  • Page 1

    USER GUIDE AND SPECIFICATIONS NI USB-9472 8-Channel, 24 V Logic, Sour cing Digital Output Device This user guide describes how to use the National Instruments NI USB-9472 and lists the device specif i cations. In this user guide, the NI USB-9472 with scr e w terminal and the NI USB-9472 with D-SUB are referred to inclusi vel y as the NI USB-9472. I[...]

  • Page 2

    NI USB-9472 U ser Guide and Specifications 2 Dimensions Figures 2 and 3 sho w the NI USB-9472 device dimensions. Figure 2. NI USB-9472 (Screw T erminal) Device in Millimeters (Inches) Figure 3. NI USB-9472 (D-SUB) Device in Millimeters (Inches) 25.34 (0.998) Hi-Speed USB Carrier NI USB-9162 140.23 mm (5.521 in.) 137.82 mm (5.426 in.) 120.68 [...]

  • Page 3

    © National Instruments Corporation 3 NI USB-9472 User Guid e and Specifications Safety Guidelines Operate the NI USB-9472 on ly as described in thes e operating instructions. Note Although the NI 9472 module may have more stringent certification standards than the NI USB-9472, when used with the NI USB-9162 carrier , the combined system m ay be li[...]

  • Page 4

    NI USB-9472 U ser Guide and Specifications 4 Related Documentation Each application software package an d driv er includes inform ation about writing applications for taking measur ements and controlling measurement devices. The follo wing references to documents assume you have NI-D A Qmx 8.7 or later, and where applicable, v ersion 7.1 or [...]

  • Page 5

    © National Instruments Corporation 5 NI USB-9472 User Guid e and Specifications • T aking Measurements —Contains the conceptual and how-to information you need to acquire and analyze measurement data in LabVIEW , including common measurements, measurement fundamentals, NI-DA Qmx key concepts, and device considerations. LabWindows/CVI The Data [...]

  • Page 6

    NI USB-9472 U ser Guide and Specifications 6 ANSI C without NI Application Software The NI-D A Qmx Help contains API o vervie ws and gen eral information about measurement concepts. Select Start»All Programs»National Instruments»NI-D A Q»NI-DA Qmx Help . The NI-D A Qm x C Refer ence Help describes the NI-D A Qmx Library functions, which [...]

  • Page 7

    © National Instruments Corporation 7 NI USB-9472 User Guid e and Specifications T raining Courses If you need more help getting started developing an appli cation with NI products, NI offers training courses. To enroll in a course or obtain a detailed course outline, r efer to . T echnical Support on the W eb For additional support[...]

  • Page 8

    NI USB-9472 U ser Guide and Specifications 8 3. Align the I/O module with the carrier , as sho wn in Figure 4. Figure 4. Module Installation 4. Squeeze the latches and insert the NI 9472 module into the NI USB-9162 carrier . 5. Press f irmly on the connector side of the NI 9472 module un til the latches lock the module into place, as sho wn [...]

  • Page 9

    © National Instruments Corporation 9 NI USB-9472 User Guid e and Specifications Mounting the NI USB-9472 to a Panel Threaded inserts are located in the NI USB-9472 for mounting it to a panel. Refer to Figure 6 for dimensions. Figur e 6. Module Dimensions in Millimeters (Inches) Connecting the NI USB-9472 to a Computer Plug one end of the USB cable[...]

  • Page 10

    NI USB-9472 U ser Guide and Specifications 10 Wiring the NI USB-9472 Device The NI USB-9472 provides connections for eigh t digital output channel s. Caution A high v oltage screw terminal backshell must be installed when using hazardous voltages (>42.4 V pk , 60 VDC). Note T able 2 illustrates the accessories a v ailable from ni. com for[...]

  • Page 11

    © National Instruments Corporation 11 NI USB-9472 User Gu id e and Specifications Y ou must connect an external po wer supply to the NI USB-9472. This power supply provides the current for the de vices you connect to the module. Connect the positi ve lead of the po wer supply to the supply terminal or pin, V sup , and the negati ve lead of the po [...]

  • Page 12

    NI USB-9472 U ser Guide and Specifications 12 Figure 7. Pin Assignments Connecting Devices to the NI USB-9472 The NI USB-9472 has current sourcing outputs , meaning the DO term inal or pin drives current or applies vo ltage to the device to which it is connected. Y ou can connect sinking-input devices, such as NPN, open collectors, normally [...]

  • Page 13

    © National Instruments Corporation 13 NI USB-9472 User Gu id e and Specifications Figure 8. Connecting a Device to the NI USB-9472 When the channel is on, the channel LED is on and the terminal or pin associated with the chan nel driv es a current or applies a v oltage to the device . When the channel is of f, the ch annel LED is of f and the term[...]

  • Page 14

    NI USB-9472 U ser Guide and Specifications 14 Figure 10. Assembled High Voltage Screw T erminal Back shell I/O Protection The NI USB-9472 is s hort-circuit-proof in acco rdance with IEC 1131-2 and provides overcurrent protection. Understanding Short-Ci rcuit-Proof Devices Each channel on the NI USB-9472 has circ uitry that protects it from c[...]

  • Page 15

    © National Instruments Corporation 15 NI USB-9472 User Gu id e and Specifications Power Supplies and Overcurrent Conditions If a short-circuit occu rs, the current through DO can exceed the current rating for the power supply and the m aximum continuous ou tput current for the NI USB-9472. If the po wer supply you are using with the NI USB-9472 ca[...]

  • Page 16

    NI USB-9472 U ser Guide and Specifications 16 I/O protection Voltage . ........... .............. .............. ....30 V max Reversed voltage ................. ............None Trip currents Minimum possible trip current ... .............. .............. .6 A Minimum guaranteed trip current ... .............. .............. .13 A Trip time [...]

  • Page 17

    © National Instruments Corporation 17 NI USB-9472 User Gu id e and Specifications Weight With screw terminal ............... ......... Approx. 250 g (8.8 oz) With D-SUB ............ .............. ......... Approx. 245 g (8.6 oz) Safety If you need to clean the module, wipe it with a dry towel. Safety Vo ltages NI USB-9472 with Screw T erminal Cha[...]

  • Page 18

    NI USB-9472 U ser Guide and Specifications 18 Safety Standards The NI USB-9472 product is designed to meet the requirements of th e following standards of saf ety for el ectrical equipment for measurement, control, and laboratory use: • IEC 61010-1, EN-61010-1 • UL 61010-1, CSA 61010-1 Note For UL and other safety certifications, refer t[...]

  • Page 19

    © National Instruments Corporation 19 NI USB-9472 User Gu id e and Specifications CE Compliance This product meets the essential re quirements of applicable European Directives, as amended fo r CE marking, as follows: • 2006/95/EC; Lo w-V oltage Directi ve (safety) • 2004/108/EC; Elect romagnetic Compatibility Directiv e (EMC) Note Refer to th[...]

  • Page 20

    National Instruments, NI,, and LabVIEW are tradem arks of National Instruments Corporation. Refer to t he Terms of Use section on for mor e information a bout National Instruments trademarks. Other product and compan y names mentioned herein are trademarks or trade names of their respective companie s . For patents covering Nati[...]