National Instruments NI 9246 Bedienungsanleitung

NI-9246 Getting

Started

2022-07-06

Contents

Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Safety Guidelines. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Safety Guidelines for Hazardous Voltages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Safety Voltages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Electromagnetic Compatibility Guidelines. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Special Conditions for Marine Applications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Preparing the Environment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Connecting the NI 9246. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Connecting Cables Using Ring Lug Connectors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Installing the NI 9246 Backshell. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Connecting Phase Measurements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

High-Vibration Applications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Where to Go Next. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

NI Services. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

ni.com

NI-9246 Getting Started

Overview

This document explains how to connect to the NI 9246.

Note Before you begin, read the NI 9246 Safety, Environmental, and

Regulatory Information document on ni.com/manuals and complete the

soware and hardware installation procedures in your chassis

documentation.

Note The guidelines in this document are specific to the NI 9246. 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.

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

compromise the built-in safety protection.

Attention Suivez toutes les instructions et respectez toutes les mises

en garde de la documentation d'utilisation. L'utilisation du produit de

toute autre façon que celle spécifiée risque de l'endommager et de

compromettre la protection de sécurité intégrée.

Safety Guidelines for Hazardous Voltages

Caution Ensure that hazardous voltage wiring is performed only by

qualified personnel adhering to local electrical standards.

NI-9246 Getting Started

Caution Do not mix hazardous voltage circuits and human-accessible

circuits on the same module.

Caution Ensure that devices and circuits connected to the module are

properly insulated from human contact.

Caution When module terminals are hazardous voltage LIVE (>42.4 Vpk/60

V DC), you must ensure that devices and circuits connected to the module

are properly insulated from human contact.

Safety Voltages

Connect only voltages that are within the following limits:

Maximum working voltage, channel-to-earth ground

Continuous

Up to 2,000 m altitude 300 Vrms, Measurement Category III

Up to 5,000 m altitude 150 Vrms, Measurement Category III or 300 Vrms, Measurement

Category II

Maximum working voltage, channel-to-channel

Continuous

Up to 2,000 m altitude 480 Vrms, Measurement Category III

Up to 5,000 m altitude 300 Vrms, Measurement Category III or 480 Vrms, Measurement

Category II

Withstand

Channel-to-channel 3510 Vrms, verified by a 5 s dielectric withstand test

Channel-to-earth ground 3510 Vrms, verified by a 5 s dielectric withstand test

ni.com

NI-9246 Getting Started

Caution The NI 9246 ships with a connector backshell to ensure that the

terminals are not accessible. Do not operate the device without first

installing this backshell.

Figure 1. NI 9246 with Backshell

Related concepts

■Installing the NI 9246 Backshell

Electromagnetic Compatibility Guidelines

This product was tested and complies with the regulatory requirements and limits

for electromagnetic compatibility (EMC) stated in the product specifications. These

requirements and limits provide reasonable protection against harmful interference

when the product is operated in the intended operational electromagnetic

environment.

This product is intended for use in industrial locations. However, harmful

interference may occur in some installations, when the 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 instructions in the product documentation.

Furthermore, any changes or modifications to the product not expressly approved

by National Instruments could void your authority to operate it under your local

regulatory rules.

NI-9246 Getting Started

Special Conditions for Marine Applications

Some products are approved for marine (shipboard) applications. To verify marine

approval certification for a product, visit ni.com/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 shielded and/or filtered

power and input/output ports. In addition, take precautions when

designing, selecting, and installing measurement probes 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 9246 meets the following

specifications.

Operating temperature (IEC 60068-2-1, IEC 60068-2-2) -40 °C to 70 °C

Operating humidity (IEC 60068-2-30) 10% RH to 90% RH, noncondensing

Pollution Degree 2

Maximum altitude 5,000 m

Indoor use only.

Note Refer to the NI 9246 Specifications on ni.com/manuals for

complete specifications.

Connecting the NI 9246

The NI 9246 provides connection for three analog input channels.

ni.com

NI-9246 Getting Started

Figure 2. NI 9246 Pinout

AI0+

AI1+

AI2+

AI1-

AI0-

AI2-

Note The NI 9246 does not measure DC currents.

Caution Connecting a DC current source to the NI 9246 outside of the

specifications stated in the NI 9246 Datasheet may lead to invalid

measurements. Refer to the datasheet on ni.com/manuals for the NI 9246

specifications.

Connecting Cables Using Ring Lug Connectors

Complete the following steps to connect cables using ring lug connectors. Use 5.26

mm2 (10 AWG) cables.

NI-9246 Getting Started

Figure 4. Installing Cables

1. Align the cables with the device terminals.

2. Secure the cables using the ring lug screws. Tighten the screws to 1.36 N · m

(12 lb · in.) torque.

Installing the NI 9246 Backshell

Complete the following steps to install the NI 9246 backshell.

Figure 4. Connector Backshell Installation

1. Align the backshell components with the device terminals.

2. Secure the backshell using the captive screws. Tighten to 0.45 N · m (4 lb · in.)

torque.

ni.com

NI-9246 Getting Started

Connecting Phase Measurements

You can connect three-phase measurement configurations and single-phase

measurement configurations to the NI 9246.

You can connect a current source to the NI 9246 for single-phase measurements. For

grounded current sources, connect to the chassis ground.

Figure 5. Connecting a Grounded or Floating Current Source

NI 9246

AI–

AI+

For three-phase measurements, connect three current sources to the NI 9246.

High-Vibration Applications

Proper strain relief of 5.26 mm2 (10 AWG) cable is required to meet the shock and

vibration performance specifications stated in the NI 9246 Datasheet on ni.com/

manuals. Strain relieve all cabling as close to the chassis mounting plate as possible

to reduce the stresses exerted on the module. Ensure that you do not directionally

bias the module when applying strain relief.

Where to Go Next

Located at ni.com/manuals Installs with the software

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& Resources

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Servi ces

ni.com/services

NI-9246 Getting Started

NI Services

Visit ni.com/support to find support resources including documentation,

downloads, and troubleshooting and application development self-help such as

tutorials and examples.

Visit ni.com/services to learn about NI service oerings such as calibration options,

repair, and replacement.

Visit ni.com/register to register your NI product. Product registration facilitates

technical support and ensures that you receive important information updates from

NI.

NI corporate headquarters is located at 11500 N Mopac Expwy, Austin, TX,

78759-3504, USA.

ni.com

NI-9246 Getting Started

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