National Instruments NI 9425 Bedienungsanleitung

NI-9425 Getting

Started

2022-07-06

Contents

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

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

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

NI-9425 with Spring Terminal Safety Voltages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

NI-9425 with DSUB Safety Voltages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Safety Guidelines for Hazardous Locations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Electromagnetic Compatibility Guidelines. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Special Conditions for Marine Applications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Preparing the Environment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

NI 9425 Pinout. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Connecting a Sourcing-Output Device. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

NI-9425 Connection Guidelines. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

High-Vibration Application Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Where to Go Next. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

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

ni.com

NI-9425 Getting Started

Overview

This document explains how to connect to the NI-9425. In this document, the

NI-9425 with spring terminal and the NI-9425 with DSUB are referred to inclusively

as the NI-9425.

Note Before you begin, read the NI-9425 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-9425. 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-9425 Getting Started

Safety Guidelines for Hazardous Voltages

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.

NI-9425 with Spring Terminal Safety Voltages

Connect only voltages that are within the following limits.

Channel-to-channel

Up to 8 channels simultaneously ±60 V maximum

All channels simultaneously ±30 V maximum

Isolation

Channel-to-channel None

Channel-to-earth ground

Continuous 250 V RMS, Measurement Category II

Withstand up to 5,000 m 3,000 V RMS, verified by a 5 s dielectric withstand test

ni.com

NI-9425 Getting Started

Caution Do not connect the NI 9425 with spring terminal to signals or use

for measurements within Measurement Categories III or IV.

NI-9425 with DSUB Safety Voltages

Connect only voltages that are within the following limits.

Channel-to-channel

Up to 8 channels simultaneously ±60 V maximum

All channels simultaneously ±30 V maximum

Isolation

Channel-to-channel None

Channel-to-earth ground

Continuous 60 V DC, Measurement Category I

Withstand up to 2,000 m 1,000 V RMS, verified by a 5 s dielectric withstand test

Withstand up to 5,000 m 500 V RMS, verified by a 5 s dielectric withstand test

Caution Do not connect the NI 9425 with DSUB to signals or use for

measurements within Measurement Categories II, III, or IV.

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 Locations

The NI-9425 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-9425 Getting Started

NI-9425 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 9425 with spring terminal has been evaluated as Ex nA IIC T4 Gc equipment

under DEMKO 12 ATEX 1202658X and is IECEx UL 14.0089X certified. The NI 9425 with

DSUB has been evaluated as Ex nA IIC T4 Gc equipment under DEMKO 03 ATEX

0324020X and is IECEx UL 14.0089X certified. Each NI 9425 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 9425 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.

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.

ni.com

NI-9425 Getting Started

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.

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.

NI-9425 Getting Started

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 9425 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-9425 Specifications on ni.com/manuals for

complete specifications.

NI 9425 Pinout

DI0

DI1

DI3

DI5

DI7

DI9

DI11

DI13

DI15

COM

DI2

DI4

DI6

DI8

DI10

DI12

DI14

COM

DI17

DI16

DI18

DI20

DI22

DI24

DI26

DI28

DI30

DI19

DI21

DI23

DI25

DI27

DI29

DI31

DI16

DI17

DI18

DI19

DI20

DI21

DI22

DI23

COM

DI24

DI25

DI26

DI27

DI28

DI29

DI30

DI31

DI0

DI1

DI2

DI3

DI4

DI5

DI6

DO7

COM

DI8

DI9

DI10

DI11

DI12

DI13

DI14

DI15

ni.com

NI-9425 Getting Started

Signal Description

COM Common reference connection to isolated ground

DI Digital input signal connection

NC No connection

Table 1. Signal Descriptions

Connecting a Sourcing-Output Device

You can connect 2-, 3-, and 4-wire sourcing-output devices to the NI-9425.

NI 9425

_COM

Sourcing-Output

Device

External

Power

Supply

The NI-9425 channel registers as ON when the sourcing-output device applies a

voltage or drives a current that is in the input ON range to DI. The channel registers

as OFF when the device applies a voltage or drives a current that is in the input OFF

range to DI. If no device is connected to DI, the channel registers as OFF.

NI-9425 Connection Guidelines

■ Make sure that devices you connect to the NI-9425 are compatible with the

module specifications.

■ You must use 2-wire ferrules to create a secure connection when connecting

more than one wire to a single terminal on the NI-9425 with spring terminal.

■ For the NI-9425 with spring terminal, push the wire into the terminal when

using a solid wire or a stranded wire with a ferrule.

■ For the NI-9425 with spring terminal, open the terminal by pressing the

push button when using stranded wire without a ferrule.

NI-9425 Getting Started

■ For CAT II measurements, you must use a power supply with isolated DC

outputs if you are using an external power supply.

High-Vibration Application Connections

If your application is subject to high vibration, NI recommends that you use the

cRIO-9940 backshell kit to protect connections to the NI-9425 with spring terminal.

Where to Go Next

Located at ni.com/manuals Installs with the software

CompactRIO NI CompactDAQ

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& Resources

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NI Services

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

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tutorials and examples.

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repair, and replacement.

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

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NI-9425 Getting Started

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