National Instruments NI 9375 Manuale utente

NI-9375 Getting

Started

2022-07-06

Contents

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

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

NI 9375 with Spring Terminal (Black Connector) Safety Voltages. . . . . . . . . . . . . 3

Safety Guidelines for Hazardous Locations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

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

Special Conditions for Marine Applications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

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

NI 9375 Pinout. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Sourcing-Output Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Connecting Digital Devices. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Protecting the Digital Outputs from Flyback Voltages. . . . . . . . . . . . . . . . . . . . . . . 8

Connecting to a Spring-Terminal Connector. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

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

I/O Protection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

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

NI Services. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

ni.com

NI-9375 Getting Started

Overview

This document explains how to connect to the NI 9375. In this document, the

NI 9375 with spring terminal and the NI 9375 with DSUB are referred to inclusively as

the NI 9375.

Note Before you begin, read the NI 9375 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 9375. 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 9375 with Spring Terminal (Black Connector) Safety Voltages

Connect only voltages that are within the following limits.

Channel-to-COM or Vsup-to-COM 30 V DC maximum

NI-9375 Getting Started

Isolation

DI bank-to-DO bank 60 V DC maximum

Channel-to-Channel No isolation between channels

Channel-to-earth ground

Continuous 60 V DC, Measurement Category I

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

Safety Guidelines for Hazardous Locations

The NI 9375 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 9375 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.

ni.com

NI-9375 Getting Started

Special Conditions for Hazardous Locations Use in Europe and

Internationally

The NI 9375 has been evaluated as Ex nA IIC T4 Gc equipment under

DEMKO 07ATEX 0626664X and is IECEx UL 14.0089X certified. Each NI 9375 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 9375 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.

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

NI-9375 Getting Started

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.

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 9375 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.com

NI-9375 Getting Started

NI 9375 Pinout

DI8

DI9

DI10

DI11

DI12

DI13

DI14

DI15

DO COM

DO8

DO9

DO10

DO11

DO12

DO13

DO14

DO15

DI0

DI1

DI2

DI3

DI4

DI5

DI6

DI7

DI COM

DO0

DO1

DO2

DO3

DO4

DO5

DO6

DO7

Vsup

DI0

DI1

DI3

DI5

DI7

DO0

DO2

DO4

DO6

DO COM

DI2

DI4

DI6

DI COM

DO1

DO3

DO5

DO7

DI9

DI8

DI10

DI12

DI14

DO9

DO11

DO13

DO15

DI11

DI13

DI15

DO8

DO10

DO12

DO14

Vsup

Signal Description

DI Digital input signal connection

DI COM Common reference connection for the digital inputs

DO Digital output signal connection

DO COM Common reference connection for the digital outputs

NC No connection

Vsup Voltage supply connection

Table 1. Signal Descriptions

Sourcing-Output Connections

You can connect 2- and 3-wire sourcing-output devices to the NI 9375.

NI 9375

External

Power

Supply

–

Sourcing-Output

Device

DI COM

NI-9375 Getting Started

The NI 9375 channel registers as ON when the sourcing-output device drives enough

current or applies enough voltage to DI. If no device is connected to DI, the channel

registers as OFF.

Connecting Digital Devices

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

relays, and lamps to the NI 9375. You must connect an external power supply to the

NI 9375. The power supply provides the current for the output channels.

Figure 1. Connecting an Industrial Device to the NI 9375

NI 9375

Device

Vsup

DO COM

External

Power

Supply

–

Caution Do not install or remove C Series modules from your system if

any external power supplies connected to the Vsup and COM pins are

powered on.

Attention Ne pas installer ou retirer les modules de la Série C de votre

système si une alimentation externe connectée aux broches Vsup et COM

est sous tension.

Ensure that the devices you connect to the NI 9375 are compatible with the output

specifications of the NI 9375. Refer to the device datasheet at ni.com/manuals for

output specifications.

Note When the industrial device is o, DO is not connected to COM. For

large source impedances, you must use a pull-down resistor between DO

and COM. Go to ni.com/r/cseriesdopulsegen for more information.

ni.com

NI-9375 Getting Started

Protecting the Digital Outputs from Flyback Voltages

If the channel is switching an inductive or energy-storing device such as a solenoid,

motor, or relay, and the device does not have flyback protection, install an external

flyback diode.

Figure 2. Connecting a Flyback Diode

NI 9375

External

Power

Supply

–

DO COM

Vsup

Inductive

Device

Flyback

Diode

Connecting to a Spring-Terminal Connector

What to Use

■ NI 9375 spring-terminal connector

■ 0.08 mm2 to 1.0 mm2 (28 AWG to 18 AWG) copper conductor wire with 7 mm

(0.28 in.) of insulation stripped from the end

■Flathead screwdriver with a 2.3 mm x 1.0 mm (0.09 in. x 0.04 in.) blade,

included with the NI 9375

What to Do

Complete the following steps to connect wires to the spring-terminal connector.

1 2 3

NI-9375 Getting Started

1. Insert the screwdriver into a spring clamp activation slot to open the

corresponding connector terminal.

2. Press a wire into the open connector terminal.

3. Remove the screwdriver from the activation slot to clamp the wire into place.

High-Vibration Application Connections

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

NI 9940 backshell kit to protect connections to the NI 9375 with spring terminal.

I/O Protection

Each DO channel on the NI 9375 has circuitry that protects it from overcurrents

resulting from a short-circuit or faulty loads.

Notice Overvoltage and reverse bias voltage conditions can damage the

NI 9375. Check the voltage specifications for all devices that you connect

to the NI 9375.

When a short circuit is present on a digital output channel, the DO channel cycles o

and on until the short circuit is removed or the current returns to an acceptably low

level. An overcurrent state can aect the performance of the NI 9375 and other

modules in the system. To ensure safe and proper operation, the digital outputs

should not exceed the maximum continuous output current specification.

Where to Go Next

ni.com

NI-9375 Getting Started

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