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 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.

High-Vibration Application Connections

If your application is subject to high vibration, NI recommends that you follow these

guidelines to protect connections to the NI-9244:

Use ferrules to terminate wires to the detachable connector.

Use the NI 9969 connector backshell kit.

Wiring the NI 9969

Caution

 For safe operation with hazardous voltages, you must use the

NI 9969 Connector Backshell with the 4-terminal connector on the NI-9244.

Complete the appropriate procedure for each wire gauge.

Installing the NI 9969 Using 12 AWG to 14 AWG Wire

What to Use

 NI 9969 backshell

12 AWG to 14 AWG wire

Smallest strain-relief piece

Screwdriver

What to Do

© National Instruments

11

NI-9244 Getting Started

Содержание NI-9244

Страница 1: ...NI 9244 Getting Started 2022 07 06...

Страница 2: ...lications 7 Preparing the Environment 7 NI 9244 Pinout 7 Connecting Phase Measurements 8 Three Phase Measurement Configurations 8 Connecting Single Phase Measurement Configurations 10 Connection Guide...

Страница 3: ...and EMC ratings for the entire system Safety Guidelines Caution Observe all instructions and cautions in the user documentation Using the product in a manner not specified can damage the product and...

Страница 4: ...er than 30 V RMS 42 4 V peak or 60 V DC in DRY LOCATIONS 16 V RMS 22 6 V peak or 35 V DC in WET LOCATIONS Caution Ensure that hazardous voltage wiring is performed only by qualified personnel adhering...

Страница 5: ...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 and nonhazardous locations only Follow t...

Страница 6: ...Caution The system shall only be used in an area of not more than Pollution Degree 2 as defined in IEC EN 60664 1 Caution The system shall be mounted in an ATEX IECEx certified enclosure with a minim...

Страница 7: ...om product certifications search by model number and click the appropriate link Notice In order to meet the EMC requirements for marine applications install the product in a shielded enclosure with sh...

Страница 8: ...enced 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...

Страница 9: ...a Measurement Configuration NI 9244 AI0 Phase A Phase B Phase C Neutral AI2 AI1 Neutral 3 Wire Delta Measurement Configuration NI 9244 AI0 Phase A Phase B Phase C AI2 AI1 Corner Grounded 2 Wire Delta...

Страница 10: ...Phase Measurement Configurations NI recommends the following single phase connection types 3 Wire Measurement Split Phase Configuration NI 9244 AI0 Neutral AI1 2 Wire Measurement NI 9244 AI0 Neutral C...

Страница 11: ...ibration NI recommends that you follow these guidelines to protect connections to the NI 9244 Use ferrules to terminate wires to the detachable connector Use the NI 9969 connector backshell kit Wiring...

Страница 12: ...ure 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 16 AWG wire Small and large strain relief pi...

Страница 13: ...strain relief piece underneath the wires 2 Secure the strain relief pieces and the backshell in place using captive screws Installing the NI 9969 Using 18 AWG to 24 AWG Wire What to Use NI 9969 backsh...

Страница 14: ...wing equation for an example of converting L N measurements to L Earth Line to Earth AIx Neutral where AIx is the analog input channel reading Neutral is the Neutral channel reading Converting L N Mea...

Страница 15: ...xamples Visit ni com services to learn about NI service offerings such as calibration options repair and replacement Visit ni com register to register your NI product Product registration facilitates...

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