NI 9228 Manuel utilisateur

GETTING STARTED GUIDE

NI 9228

8 AI, ±60 V, 24 Bit, 1 kS/s/ch Simultaneous

This document explains how to connect to the NI 9228.

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 9228. 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 9228 only as described in this document.

Caution Do not operate the NI 9228 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 9228 Getting Started Guide

Hazardous Voltage This icon denotes a warning

advising you to take precautions to avoid electrical

shock.

Safety Voltages

Connect only voltages that are within the following limits:

Channel-to-channel isolation

Up to 2,000 m altitude

Continuous 250 Vrms, Measurement

Category II

Withstand 1,500 Vrms, verified by a 5 s

dielectric test

Up to 5,000 m altitude

Continuous 60 VDC, Measurement

Category I

Withstand 1,000 Vrms, verified by a 5 s

dielectric test

NI 9228 Getting Started Guide | © National Instruments | 3

Channel-to-earth ground isolation

Up to 2,000 m altitude

Continuous 250 Vrms, Measurement

Category II

Withstand 3,000 Vrms, verified by a 5 s

dielectric test

Up to 5,000 m altitude

Continuous 60 VDC, Measurement

Category I

Withstand 1,000 Vrms , verified by a 5 s

dielectric test

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.

4| ni.com | NI 9228 Getting Started Guide

Caution If using in Division 2 or Zone 2 hazardous

locations applications, do not connect the NI 9228 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 not

intended for direct connection to the MAINS building

installations of Measurement Categories CAT II,

CAT III, or CAT IV.

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.

Caution Do not connect the NI 9228 to signals or use

for measurements within Measurement Categories III

or IV.

NI 9228 Getting Started Guide | © National Instruments | 5

Safety Guidelines for Hazardous Voltages

If hazardous voltages are connected to the device, take the

following precautions. A hazardous voltage is a voltage greater

than 42.4 Vpk voltage or 60 VDC to earth ground.

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 VDC), you must ensure

that devices and circuits connected to the module are

properly insulated from human contact. You must use

the NI 9939 screw terminal connector backshell kit to

ensure that the terminals are not accessible.

6| ni.com | NI 9228 Getting Started Guide

Safety Guidelines for Hazardous Locations

The NI 9228 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 9228 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.

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.

NI 9228 Getting Started Guide | © National Instruments | 7

Special Conditions for Hazardous Locations Use in

Europe and Internationally

The NI 9228 has been evaluated as Ex nA IIC T4 Gc equipment

under DEMKO 12 ATEX 1202658X and is IECEx UL 14.0089X

certified. Each NI 9228 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 9228 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 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/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.

8| ni.com | NI 9228 Getting Started Guide

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 9228 Getting Started Guide | © National Instruments | 9

Caution Electrostatic Discharge (ESD) can damage

the NI 9228. To prevent damage either install the

NI 9939 screw terminal connector backshell kit or

employ industry-standard ESD prevention measures

during installation, maintenance, and operation.

Caution To ensure the specified EMC performance,

operate this product with twisted-pair cables.

Caution To ensure the specified EMC performance,

the length of all I/O cables must be no longer than 30 m

(100 ft).

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

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

10 | ni.com | NI 9228 Getting Started Guide

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