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National Instruments NI-9244 Getting Started

National Instruments NI-9244 Getting Started

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NI-9244 Getting
Started
2022-07-06

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Summary of Contents for National Instruments NI-9244

  • Page 1 NI-9244 Getting Started 2022-07-06...

  • Page 2: Table Of Contents

    NI-9244 Getting Started Contents Overview..............3 Safety Guidelines.

  • Page 3: Overview

    Note The guidelines in this document are specific to the NI-9244. The other components in the system might not meet the same safety ratings. Refer to the documentation for each component in the system to determine the safety and EMC ratings for the entire system.

  • Page 4: Safety Guidelines For Hazardous Voltages

    NI-9244 Getting Started Continuous 400 Vrms, Measurement Category III Up to 5,000 m altitude Continuous 400 Vrms, Measurement Category II or 300 Vrms,Measurement Category III Division 2 and Zone 2 hazardous locations applications Channel-to-earth ground 300 Vrms, Measurement Category III Safety Guidelines for Hazardous Voltages If hazardous voltages are connected to the product, take the following precautions.

  • Page 5: Safety Guidelines For Hazardous Locations

    Safety Guidelines for Hazardous Locations The NI-9244 is suitable for use in Class I, Division 2, Groups A, B, C, D, T4 hazardous locations; Class I, Zone 2, AEx nA IIC T4 Gc and Ex nA IIC T4 Gc hazardous locations;...

  • Page 6: Electromagnetic Compatibility Guidelines

    II 3G and is suitable for use in Zone 2 hazardous locations, in ambient temperatures of -40 °C ≤ Ta ≤ 70 °C. If you are using the NI-9244 in Gas Group IIC hazardous locations, you must use the device in an NI chassis that has been evaluated as Ex nC IIC T4, Ex IIC T4, Ex nA IIC T4, or Ex nL IIC T4 equipment.

  • Page 7: Special Conditions For Marine Applications

    EMC performance is attained. Preparing the Environment Ensure that the environment in which you are using the NI-9244 meets the following specifications. Operating temperature (IEC 60068-2-1, IEC 60068-2-2) -40 °C to 70 °C...

  • Page 8: Ni 9244 Pinout

    Analog input signal connection referenced to the Neutral signal Neutral Referenced, single-ended analog input connection Table 1. Signal Descriptions Connecting Phase Measurements The NI-9244 accepts three-phase and single-phase measurement configuration. Three-Phase Measurement Configurations NI recommends the following three-phase connection types. 4-Wire WYE Measurement Configuration ni.com...
  • Page 9 NI-9244 Getting Started Phase A Phase B Phase C Neutral Neutral NI 9244 High-Leg Delta Measurement Configuration Phase A Phase B Phase C Neutral Neutral NI 9244 3-Wire Delta Measurement Configuration Phase A Phase B Phase C NI 9244 Corner Grounded 2-Wire Delta Measurement Configuration...

  • Page 10: Connecting Single-Phase Measurement Configurations

    3-Wire Measurement (Split Phase) Configuration Neutral NI 9244 2-Wire Measurement Neutral NI 9244 Connection Guidelines You must use 2-wire ferrules to create a secure connection when connecting ■ more than one wire to a single terminal on the NI-9244. ni.com...

  • Page 11: High-Vibration Application Connections

    NI-9244 Getting Started Make sure that devices you connect to the NI-9244 are compatible with the ■ module specifications. To ensure that measurements to chassis ground are correct, NI recommends connecting the chassis to earth ground using the chassis grounding screw. Refer to your chassis manual for information about connecting the chassis to earth ground.
  • Page 12 NI-9244 Getting Started 1. Route wires under the smallest strain-relief piece. 2. Secure the smallest strain-relief piece and the backshell in place using captive screws. Installing the NI 9969 Using 16 AWG Wire What to Use NI 9969 backshell ■...
  • Page 13 NI-9244 Getting Started 1. Route wires between the two strain-relief pieces, with the small strain-relief piece on top of the wires and the large strain-relief piece underneath the wires. 2. Secure the strain-relief pieces and the backshell in place using captive screws.

  • Page 14: Converting L-N Measurements To L-Earth

    NI-9244 Getting Started 1. Route wires under the largest strain-relief piece. 2. Secure the largest strain-relief piece and the backshell in place using captive screws. Converting L-N Measurements to L-Earth To convert L-N measurements to L-Earth values, add the neutral channel reading to each AI channel reading.

  • Page 15: Where To Go Next

    NI product. Product registration facilitates technical support and ensures that you receive important information updates from NI corporate headquarters is located at 11500 N Mopac Expwy, Austin, TX, 78759-3504, USA. © National Instruments © 2022 National Instruments Corporation.

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