National Instruments NI 9381 Manuale utente

GETTING STARTED GUIDE

NI 9381

8 AI/8 AO/4 DIO, 0 V to 5 V, 12 Bit, 20 kS/s

Aggregate

This document explains how to connect to the NI 9381.

Note Before you begin, complete the software and

hardware installation procedures in your chassis

documentation.

Note The guidelines in this document are specific to

the NI 9381. 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

Operate the NI 9381 only as described in this document.

Caution Do not operate the NI 9381 in a manner not

specified in this document. Product misuse can result in

a hazard. You can compromise the safety protection

built into the product if the product is damaged in any

way. If the product is damaged, return it to NI for

repair.

2| ni.com | NI 9381 Getting Started Guide

Safety Voltages

Isolation

Channel-to-channel None

Channel-to-earth

ground

None

Safety Guidelines for Hazardous Locations

The NI 9381 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

and Ex nA IIC T4 hazardous locations; and nonhazardous

locations only. Follow these guidelines if you are installing the

NI 9381 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 off or the

area is known to be nonhazardous.

Caution Do not remove modules unless power has

been switched off or the area is known to be

nonhazardous.

NI 9381 Getting Started Guide | © National Instruments | 3

Caution Substitution of components may impair

suitability for Class I, Division 2.

Caution For Division 2 and Zone 2 applications,

install the system in an enclosure rated to at least IP54

as defined by IEC/EN 60079-15.

Caution For Division 2 and Zone 2 applications,

connected low impedance sources must include a

protection device installed between the source and the

AI and DIO terminals. The protection device must

prevent the AI to ground voltage and DIO to ground

voltage from exceeding 42 V if there is a transient

overvoltage condition.

Special Conditions for Hazardous Locations Use in

Europe and Internationally

The NI 9381 has been evaluated as Ex nA IIC T4 Gc equipment

under DEMKO Certificate No. 12 ATEX 1202658X and is

IECEx UL 14.0089X certified. Each NI 9381 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 9381

in Gas Group IIC hazardous locations, you must use the device in

4| ni.com | NI 9381 Getting Started Guide

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 You must make sure that transient

disturbances do not exceed 140% of the rated voltage.

Caution The system shall only be used in an area of

not more than Pollution Degree 2, as defined in

IEC 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

NI 9381 Getting Started Guide | © National Instruments | 5

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.

Caution To ensure the specified EMC performance,

operate this product only with shielded cables and

accessories.

Special Conditions for Marine Applications

Some products are Lloyd’s Register (LR) Type Approved for

marine (shipboard) applications. To verify Lloyd’s Register

certification for a product, visit ni.com/certification and search

6| ni.com | NI 9381 Getting Started Guide

for the LR certificate, or look for the Lloyd’s Register mark on

the product.

Caution 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 9381

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

NI 9381 Getting Started Guide | © National Instruments | 7

Indoor use only.

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

for complete specifications.

8| ni.com | NI 9381 Getting Started Guide

NI 9381 Pinout

GND

AO2

AO3

GND

AO6

AO7

GND

AO0

AO1

GND

AO4

AO5

GND

AI0

AI1

AI2

AI3

AI4

AI5

AI6

AI7

DIO0

DIO1

DIO2

DIO3

GND

NI 9381 Getting Started Guide | © National Instruments | 9

Table 1. Signal Descriptions

Signal Description

AI Analog input signal connection

AO Analog output signal connection

DIO Digital input/output signal connection

GND Ground connection

Single-Ended Connections

GND

–

Voltage

Source

NI 9381

10 | ni.com | NI 9381 Getting Started Guide

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