National Instruments NI 9472 Manual de usuario

NI-9472 Getting

Started

2022-07-06

Contents

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

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

NI-9472 with Screw Terminal and Spring Terminal Safety Voltages. . . . . . . . . . . 3

NI-9472 with DSUB Safety Voltages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Safety Guidelines for Hazardous Voltages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Safety Guidelines for Hazardous Locations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Electromagnetic Compatibility Guidelines. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Special Conditions for Marine Applications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Preparing the Environment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

NI 9472 Pinout. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Connecting Digital Devices. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Increasing Current Drive. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

High-Vibration Application Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

I/O Protection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Power Supplies and Overcurrent Conditions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Detecting an Overcurrent Condition. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Resetting Channels aer an Overcurrent Condition. . . . . . . . . . . . . . . . . . . . . . . . 13

Where to Go Next. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

NI Services. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

ni.com

NI-9472 Getting Started

Overview

This document explains how to connect to the NI-9472. In this document, the

NI-9472 with screw terminal, NI-9472 with spring terminal, and NI-9472 with DSUB

are referred to inclusively as the NI-9472.

Note Before you begin, read the NI-9472 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-9472. 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.

NI-9472 with Screw Terminal and Spring Terminal Safety Voltages

Connect only voltages that are within the following limits.

Channel-to-COM 30 VDC maximum

NI-9472 Getting Started

Isolation

Channel-to-channel None

Channel-to-earth ground

Continuous 250 Vrms, Measurement Category II

Withstand 2,300 Vrms, verified by a 5 s dielectric withstand test

Caution Do not connect the product to signals or use for measurements

within Measurement Categories III or IV.

Attention Ne pas connecter le produit à des signaux dans les catégories

de mesure III ou IV et ne pas l'utiliser pour eectuer des mesures dans ces

catégories.

Measurement Category II is for measurements performed on circuits directly

connected to the electrical distribution system. 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.

NI-9472 with DSUB Safety Voltages

Connect only voltages that are within the following limits.

Channel-to-COM 30 VDC maximum

Isolation

Channel-to-channel None

Channel-to-earth ground

Continuous 60 VDC, Measurement Category I

Withstand 1,000 Vrms, verified by a 5 s dielectric withstand test

ni.com

NI-9472 Getting Started

Caution Do not connect the product to signals or use for measurements

within Measurement Categories II, III, or IV.

Attention Ne pas connecter le produit à des signaux dans les catégories

de mesure II, III ou IV et ne pas l'utiliser pour eectuer des mesures dans

ces catégories.

Warning Do not connect the product to signals or use for measurements

within Measurement Categories II, III, or IV, or for measurements on MAINs

circuits or on circuits derived from Overvoltage Category II, III, or IV which

may have transient overvoltages above what the product can withstand.

The product must not be connected to circuits that have a maximum

voltage above the continuous working voltage, relative to earth or to

other channels, or this could damage and defeat the insulation. The

product can only withstand transients up to the transient overvoltage

rating without breakdown or damage to the insulation. An analysis of

the working voltages, loop impedances, temporary overvoltages, and

transient overvoltages in the system must be conducted prior to making

measurements.

Mise en garde Ne pas connecter le produit à des signaux dans les

catégories de mesure II, III ou IV et ne pas l'utiliser pour des mesures dans

ces catégories, ou des mesures sur secteur ou sur des circuits dérivés de

surtensions de catégorie II, III ou IV pouvant présenter des surtensions

transitoires supérieures à ce que le produit peut supporter. Le produit

ne doit pas être raccordé à des circuits ayant une tension maximale

supérieure à la tension de fonctionnement continu, par rapport à la

terre ou à d'autres voies, sous peine d'endommager et de compromettre

l'isolation. Le produit peut tomber en panne et son isolation risque

d'être endommagée si les tensions transitoires dépassent la surtension

transitoire nominale. Une analyse des tensions de fonctionnement, des

impédances de boucle, des surtensions temporaires et des surtensions

NI-9472 Getting Started

transitoires dans le système doit être eectuée avant de procéder à des

mesures.

Measurement Category I is for measurements performed on circuits not directly

connected to the electrical distribution system referred to as MAINS voltage. MAINS

is a hazardous live electrical supply system that powers equipment. This category is

for measurements of voltages from specially protected secondary circuits. Such

voltage measurements include signal levels, special equipment, limited-energy

parts of equipment, circuits powered by regulated low-voltage sources, and

electronics.

Note Measurement Categories CAT I and CAT O are equivalent. These test

and measurement circuits are for other circuits not intended for direct

connection to the MAINS building installations of Measurement Categories

CAT II, CAT III, or CAT IV.

Safety Guidelines for Hazardous Voltages

You can connect hazardous voltages only to the NI-9472 with screw terminal and the

NI-9472 with spring terminal. Do not connect hazardous voltages to the NI-9472 with

DSUB.

Caution Ensure that hazardous voltage wiring is performed only by

qualified personnel adhering to local electrical standards.

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. You must use the NI

ni.com

NI-9472 Getting Started

9927 connector backshell kit with the NI-9472 with screw terminal and the

NI 9981 connector backshell kit with the NI-9472 with spring terminal to

ensure that the terminals are not accessible.

Safety Guidelines for Hazardous Locations

The NI-9472 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 these guidelines if you are installing the

NI-9472 in a potentially explosive environment. Not following these guidelines may

result in serious injury or death.

Caution Do not disconnect I/O-side wires or connectors unless power has

been switched o or the area is known to be nonhazardous.

Caution Do not remove modules unless power has been switched o or

the area is known to be nonhazardous.

Caution Substitution of components may impair suitability for Class I,

Division 2, or Zone 2.

Caution The system must be installed in an enclosure certified for the

intended hazardous (classified) location, having a tool secured cover/door,

where a minimum protection of at least IP54 is provided.

Special Conditions for Hazardous Locations Use in Europe and

Internationally

The NI-9472 has been evaluated as Ex nA IIC T4 Gc equipment under

DEMKO 03ATEX 0324020X and is IECEx UL 14.0089X certified. Each NI-9472 is marked

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-9472 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.

NI-9472 Getting Started

Caution Transient protection shall be provided that is set at a level not

exceeding 140% of the peak rated voltage value of 85 V at the supply

terminals to the equipment.

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 minimum ingress protection rating of at least IP54 as

defined in IEC/EN 60079-15.

Caution The enclosure must have a door or cover accessible only by the

use of a tool.

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.com

NI-9472 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-9472 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% RH to 90% RH, noncondensing

Pollution Degree 2

Maximum altitude 2,000 m

Indoor use only.

Note Refer to the device datasheet on ni.com/manuals for complete

specifications.

NI 9472 Pinout

NI-9472 Getting Started

DO0

DO1

DO2

DO3

DO4

DO5

DO6

DO7

Vsup

COM

Vsup

COM

Vsup

COM

Vsup

COM

Vsup

COM

DO0

Vsup

DO1

DO2

Vsup

DO3

DO4

Vsup

DO5

DO6

Vsup

DO7

DO0

DO1

DO2

DO3

DO4

DO5

DO6

DO7

Vsup

COM

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-9472 with

screw terminal or NI-9472 with spring terminal.

Signal Description

COM Common reference connection to isolated ground

DO Digital output signal connection

Vsup Voltage supply connection

Table 1. NI-9472 Signal Descriptions

LED Pattern Indication

Solid The channel has been programmed to be in the ON state.

O The channel has been programmed to be in the OFF state.

Table 2. LED Indicators

Connecting Digital Devices

You can connect a variety of industrial devices, such as solenoids, motors, actuators,

relays, and lamps to the NI-9472. You must connect an external power supply to the

NI-9472. The power supply provides the current for the output channels.

ni.com

NI-9472 Getting Started

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