National Instruments NI 9472 Operating Instructions Manual
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National Instruments NI 9472 Operating Instructions Manual

National instruments 8-channel digital output modules operating instructions and specifications
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OPERATING INSTRUCTIONS AND SPECIFICATIONS
NI 9472/9474
8-Channel Digital Output Modules
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  • Page 1 OPERATING INSTRUCTIONS AND SPECIFICATIONS NI 9472/9474 8-Channel Digital Output Modules Français Deutsch ni.com/manuals...

  • Page 2: Safety Guidelines

    This document describes how to use the National Instruments 9472 and National Instruments 9474 and includes specifications and terminal or pin assignments. In this document, the NI 9472/9474 with screw terminal and NI 9472 with DSUB are referred to inclusively as the NI 9472/9474. Visit rdsoftwareversion the modules you are using.

  • Page 3: Safety Guidelines For Hazardous Voltages

    Hot Surface hot. Touching this component may result in bodily injury. Safety Guidelines for Hazardous Voltages You can connect hazardous voltages only to the NI 9472/9474 with screw terminal. Do not connect hazardous voltages to the NI 9472 with DSUB.
  • Page 4 Figure 1 shows the NI 9932 connector backshell. You can use the NI 9932 connector backshell only Note with the NI 9472/9474 with screw terminal. Figure 1. NI 9932 Connector Backshell NI 9472/9474 ni.com...

  • Page 5: Safety Guidelines For Hazardous Locations

    Safety Guidelines for Hazardous Locations The NI 9472/9474 is suitable for use in Class I, Division 2, Groups A, B, C, D, T4 hazardous locations; Class I, Zone 2, AEx nC IIC T4 and Ex nC IIC T4 hazardous locations; and nonhazardous locations only.
  • Page 6 II 3G and is suitable for use in Zone 2 hazardous locations. If you are using the NI 9472/9474 in Gas Group IIC hazardous locations or in ambient temperatures of –40 °C ≤ Ta ≤ 70 °C, you must use the device in an NI chassis that has been evaluated as EEx nC IIC T4, Ex nA IIC T4, or Ex nL IIC T4 equipment.
  • Page 7 Power supply and module cables must be separated on opposite sides of the enclosure and must enter and exit through opposing enclosure walls. © National Instruments Corp. and search for the LR certificate, or NI 9472/9474...
  • Page 8 Connecting the NI 9472/9474 The NI 9472/9474 provides connections for eight digital output channels. Vsup Figure 2. NI 9472/9474 Terminal and Pin Assignments NI 9472/9474 Vsup Vsup Vsup Vsup Vsup Vsup Vsup Vsup ni.com...
  • Page 9 COM. National Instruments recommends you provide independent COM and V the NI 9472 with DSUB to minimize current flow in the COM and wiring. The COM pins on the NI 9472 with DSUB are internally connected..
  • Page 10 Connect the positive lead of the power supply to and the negative lead of the power supply to COM. The V pins on the NI 9472 with DSUB are internally connected. You can connect only one external voltage supply to the device. Refer to the...
  • Page 11 You can directly connect the NI 9472/9474 to a variety of industrial devices such as solenoids, motors, actuators, relays, and lamps. Make sure the devices you connect to the NI 9472/9474 are compatible with the output specifications of the module. Refer to...

  • Page 12: Increasing Current Drive

    Increasing Current Drive Each channel of the NI 9472 has a continuous output current of 0.75 A, and each channel of the NI 9474 has a continuous output current of 1 A. If you want to increase the output current to a device, you can connect any number of channels together in parallel.
  • Page 13 Wiring for High-Vibration Applications If an application using the NI 9472/9474 with screw terminal is subject to high vibration, National Instruments recommends that you either use ferrules to terminate wires to the detachable screw-terminal connector or use the NI 9932 backshell kit to protect the connections.
  • Page 14 The NI 9472/9474 is short-circuit proof in accordance with IEC 1131-2 and provides overcurrent protection. Understanding Short-Circuit-Proof Devices Each channel on the NI 9472/9474 has circuitry that protects it from current surges resulting from short circuits. Whether the module suffers damage from these overcurrent conditions depends on the following factors: •...
  • Page 15 NI 9472/9474. If the power supply you are using with the NI 9472/9474 cannot supply more than 13 A, the module may be damaged if a short-circuit condition occurs.

  • Page 16: Sleep Mode

    Refer to the chassis manual for information about support for sleep mode. If the chassis supports sleep mode, refer to the software help for information about enabling sleep mode. Visit and enter for information about ni.com/info cseriesdoc C Series documentation. NI 9472/9474 ni.com...

  • Page 17: Specifications

    The following specifications are typical for the range –40 to 70 °C unless otherwise noted. All voltages are relative to COM unless otherwise noted. The specifications are the same for the NI 9472 and the NI 9474 unless otherwise noted.
  • Page 18 Output impedance (R Typical ... 0.07 Ω Maximum ... 0.13 Ω Continuous output current (I NI 9472... 0.75 A max NI 9474... 1 A max Output voltage (V ) ... V I/O protection Voltage... 30 VDC max Reversed voltage ... None...
  • Page 19 Output delay time (full load) NI 9472... 100 μs max NI 9474... 1 μs max MTBF NI 9472... 1,113,301 hours at 25 °C; NI 9474... 479,889 hours at 25 °C; Contact NI for Bellcore MTBF specifications Note at other temperatures or for MIL-HDBK-217F specifications.

  • Page 20: Physical Characteristics

    If you need to clean the module, wipe it with a dry towel. Screw-terminal wiring ... 12 to 24 AWG copper Torque for screw terminals ... 0.5 to 0.6 N · m NI 9472/9474 conductor wire with 10 mm (0.39 in.) of insulation stripped from the end (4.4 to 5.3 lb ·...
  • Page 21 Ferrules ... 0.25 mm Weight NI 9472/9474 with screw terminal ... 150 g (5.3 oz) NI 9472 with DSUB... 145 g (5.1 oz) Safety NI 9472/9474 with Screw Terminal Safety Voltages Connect only voltages that are within the following limits.
  • Page 22 This category refers to local-level electrical distribution, such as that provided by a standard wall outlet, for example, 115 V for U.S. or 230 V for Europe. Do not connect the NI 9472/9474 with screw Caution terminal to signals or use for measurements within Measurement Categories III or IV.
  • Page 23 Such voltage measurements include signal levels, special equipment, limited-energy parts of equipment, circuits powered by regulated low-voltage sources, and electronics. Do not connect the NI 9472 with DSUB to Caution signals or use for measurements within Measurement Categories II, III, or IV.
  • Page 24 Hazardous Locations U.S. (UL) ... Class I, Division 2, Canada (C-UL) ... Class I, Division 2, Europe (DEMKO)... EEx nC IIC T4 NI 9472/9474 Groups A, B, C, D, T4; Class I, Zone 2, AEx nC IIC T4 Groups A, B, C, D, T4;...
  • Page 25 Environmental National Instruments C Series modules are intended for indoor use only but may be used outdoors if installed in a suitable enclosure. Refer to the manual for the chassis you are using for more information about meeting these specifications.

  • Page 26: Shock And Vibration

    Shock and Vibration To meet these specifications, you must panel mount the system. If you are using the NI 9472/9474 with screw terminal, you also must either affix ferrules to the ends of the terminal wires or use the NI 9932 backshell kit to protect the connections.
  • Page 27 To obtain the DoC for this product, visit ni.com/certification product line, and click the appropriate link in the Certification column. © National Instruments Corp. , search by module number or NI 9472/9474...

  • Page 28: Environmental Management

    Environmental Management National Instruments is committed to designing and manufacturing products in an environmentally responsible manner. NI recognizes that eliminating certain hazardous substances from our products is beneficial not only to the environment but also to NI customers. For additional environmental information, refer to the NI and the...

  • Page 29: Where To Go For Support

    China RoHS compliance, go to environment/rohs_china Where to Go for Support The National Instruments Web site is your complete resource for technical support. At everything from troubleshooting and application development self-help resources to email and phone assistance from NI Application Engineers.
  • Page 30 South Africa 27 0 11 805 8197, Spain 34 91 640 0085, Sweden 46 (0) 8 587 895 00, Switzerland 41 56 2005151, Taiwan 886 02 2377 2222, Thailand 662 278 6777, Turkey 90 212 279 3031, United Kingdom 44 (0) 1635 523545 NI 9472/9474 ni.com...
  • Page 31 National Instruments, NI, ni.com, and LabVIEW are trademarks of National Instruments Corporation. Refer to the Terms of Use section on ni.com/legal for more information about National Instruments trademarks. Other product and company names mentioned herein are trademarks or trade names of their respective companies.

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Ni 9474

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