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National Instruments NI 9474 Getting Started Manual

Other manuals for NI 9474: Operating Instructions Manual
Manual is about: National Instruments 8-Channel Digital Output Modules Operating Instructions and Specifications

Summary of NI 9474

  • Page 1

    Getting started guide ni 9474 8 do, 5 v to 30 v, sourcing, 1 μs.

  • Page 2: Note

    This document explains how to connect to the ni 9474. In this document, the ni 9474 with screw terminal and the ni 9474 with spring terminal are referred to inclusively as the ni 9474. Note before you begin, complete the software and hardware installation procedures in your chassis documentation. No...

  • Page 3: Hazardous Voltage

    Way. If the product is damaged, return it to ni for repair. Hazardous voltage this icon denotes a warning advising you to take precautions to avoid electrical shock with the ni 9474 with screw terminal and the ni 9474 with spring terminal. Safety voltages connect only voltages that are within the fo...

  • Page 4: Caution

    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. Caution do not connect the ni 9474 to signals or use for measurements within measurement categories iii or iv. Safety guidelines for hazardou...

  • Page 5: Caution

    Devices and circuits connected to the module are properly insulated from human contact. You must use the ni 9927 connector backshell kit with the ni 9474 with screw terminal and the ni 9981 connector backshell kit with the ni 9474 with spring terminal to ensure that the terminals are not accessible....

  • Page 6: Caution

    Caution substitution of components may impair suitability for class i, division 2. Caution for division 2 and zone 2 applications, install the system in an enclosure rated to at least ip54 as defined by iec/en 60079-15. Caution for division 2 and zone 2 applications, install a protection device betw...

  • Page 7: Caution

    Caution you must make sure that transient disturbances do not exceed 140% of the rated voltage. Caution the system shall only be used in an area of not more than pollution degree 2, as defined in iec 60664-1. Caution the system shall be mounted in an atex/iecex-certified enclosure with a minimum ing...

  • Page 8: Caution

    Product is connected to a peripheral device or test object, or if the product is used in residential or commercial areas. To minimize interference with radio and television reception and prevent unacceptable performance degradation, install and use this product in strict accordance with the instruct...

  • Page 9: Note

    And cables to ensure that the desired emc performance is attained. Preparing the environment ensure that the environment in which you are using the ni 9474 meets the following specifications. Operating temperature (iec 60068-2-1, iec 60068-2-2) -40 °c to 70 °c operating humidity (iec 60068-2-78) 10%...

  • Page 11: Note

    Note you must use 2-wire ferrules to create a secure connection when connecting more than one wire to a single terminal on the ni 9474 with screw terminal or ni 9474 with spring terminal. Table 1. Ni 9474 signal descriptions signal description com common reference connection to isolated ground do di...

  • Page 12: Caution

    Connecting digital devices you can connect a variety of industrial devices, such as solenoids, motors, actuators, relays, and lamps to the ni 9474. You must connect an external power supply to the ni 9474. The power supply provides the current for the output channels. Figure 1. Connecting an industr...

  • Page 13: Note

    Ensure that the devices you connect to the ni 9474 are compatible with the output specifications of the ni 9474. Refer to the device datasheet at ni.Com/manuals for output specifications. Note when the industrial device is off, do is not connected to com. For large source impedances, you must use a ...

  • Page 14

    Figure 2. Increasing the current to a device connected to the ni 9474 ni 9474 do3 do1 do0 do2 4 a + _ com 1 a 1 a 1 a 1 a external power supply de vice v sup high-vibration application connections if your application is subject to high vibration, ni recommends that you follow these guidelines to pro...

  • Page 15: Note

    I/o protection the ni 9474 provides short-circuit protection. Each channel has circuitry that protects it from current surges resulting from short circuits over 14 a. Note refer to the device datasheet at ni.Com/manuals for maximum continous output current, short-circuit behavior, and short-circuit ...

  • Page 16

    Power supplies and overcurrent conditions if a short circuit occurs, the current through do can exceed the current rating for the power supply and the maximum continuous output current for the ni 9474. If the power supply you are using with the ni 9474 cannot supply more than 14 a, the module may be...

  • Page 17

    Resetting channels after an overcurrent condition after you have determined and fixed the cause of an overcurrent condition, reset the channel by turning it off. Alternatively, you can disconnect the external power supply from the chassis. However, doing so disconnects power from all the module chan...

  • Page 19

    Worldwide support and services the ni website is your complete resource for technical support. At ni.Com/support , you have access to everything from troubleshooting and application development self-help resources to email and phone assistance from ni application engineers. Visit ni.Com/services for...

  • Page 20

    Ni corporate headquarters is located at 11500 north mopac expressway, austin, texas, 78759-3504. Ni also has offices located around the world. For telephone support in the united states, create your service request at ni.Com/support or dial 1 866 ask myni (275 6964). For telephone support outside th...