National Instruments NI-9232 Bedienungsanleitung

NI-9232 Getting

Started

2022-07-06

Contents

Before You Begin. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

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

Safety Voltages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

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

Cable Requirements for EMC Compliance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

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

Preparing the Environment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Connecting the NI-9232. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Connecting Signal Sources. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Wiring for High-Vibration Applications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Where to Go Next. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

NI Services. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

ni.com

NI-9232 Getting Started

Before You Begin

Read the NI-9232 Safety, Environmental, and Regulatory Information and

complete the soware and hardware installation procedures in your chassis

documentation.

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.

Safety Voltages

Connect only voltages that are within the following limits.

Isolation

Channel-to-channel None

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-9232 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;

NI-9232 Getting Started

and nonhazardous locations only. Follow these guidelines if you are installing the

NI-9232 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.

Caution For Division 2 and Zone 2 applications, connected signals must

be within the following limits.

Capacitance 0.2 µF maximum

Special Conditions for Hazardous Locations Use in Europe and

Internationally

The NI-9232 has been evaluated as Ex nA IIC T4 Gc equipment under

DEMKO 12ATEX 1202658X and is IECEx UL 14.0089X certified. Each NI-9232 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-9232 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.com

NI-9232 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.

Notice To ensure the specified EMC performance, operate this product

only with shielded cables and accessories. Do not use unshielded cables or

NI-9232 Getting Started

accessories unless they are installed in a shielded enclosure with properly

designed and shielded input/output ports and connected to the product

using a shielded cable. If unshielded cables or accessories are not properly

installed and shielded, the EMC specifications for the product are no

longer guaranteed.

Caution Electrostatic Discharge (ESD) can damage the NI-9232. To

prevent damage, use industry-standard ESD prevention measures during

installation, maintenance, and operation.

Caution To ensure the specified EMC performance for the NI-9232 with

screw terminal, you must install clamp-on ferrite beads (part number

782802-01) in accordance with the product installation instructions. Refer

to the NI-9232 product page on ni.com for purchasing information about

clamp-on ferrite beads.

Notice To ensure the specified EMC performance, the length of all I/O

cables must be no longer than 3 m (10 ).

Cable Requirements for EMC Compliance

Select and install cables for the NI-9232 in accordance with the following

requirements:

■Connect the cable shield to the chassis ground (grounding screw of the

chassis).

■For the NI-9232 with screw terminal, install a clamp-on ferrite bead (part

number 782802-01) on the input cable for each channel that you are

connecting to on the NI-9232.

■For the NI-9232 with screw terminal, clamp-on ferrite beads must be

installed on the cable as close to the module as possible. Placing the ferrite

elsewhere on the cable noticeably impairs its eectiveness.

ni.com

NI-9232 Getting Started

Figure 1. Cable Connections for EMC Compliance

NI 9232

with Screw Terminal

Shield

AI0+

AI0-

Ferrite

Shield

AI1+

AI1-

Ferrite

Shield

AI2+

AI2-

Ferrite

Signal

Source

Signal

Source

Signal

Source

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-9232 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.

NI-9232 Getting Started

Note Refer to the NI-9232 Specifications on ni.com/manuals for

complete specifications.

Connecting the NI-9232

The NI-9232 provides connections to three simultaneously sampled analog input

channels.

Figure 2. NI-9232 Pinout

AI0+

AI0–

AI1+

AI1–

AI2+

AI2–

AI0–

AI0+

AI1–

AI1+

AI2–

AI2+

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-9232 with

screw terminal.

Each channel has a terminal to which you can connect a signal source. The AI+

terminal of the connector provides the DC excitation, when enabled, and the

positive input signal connection. The AI- terminal provides the excitation return

path and the signal ground reference.

Signal Description

AI+ Positive analog input signal connection

AI- Negative analog input signal connection

Table 1. Signal Descriptions

Connecting Signal Sources

You can connect ground-referenced or floating signal sources to the NI-9232.

ni.com

NI-9232 Getting Started

If you make a ground-referenced connection between the signal source and the

NI-9232, make sure the voltage on the AI+ and the AI- connections are in the

channel-to-earth safety voltage range to ensure proper operation of the NI-9232.

Refer to the device datasheet on ni.com/manuals for more information about

operating voltages and overvoltage protection.

Figure 3. Connecting a Grounded Signal Source

NI 9232

AI+

AI-

–

Signal

Source

Common

Mode

Voltage

Figure 4. Connecting a Floating Signal Source

NI 9232

AI+

AI-

–

Signal

Source

Integrated Electronic Piezoelectric (IEPE) Sensors

The NI-9232 provides an IEPE excitation current for each channel to measure the

IEPE sensors. Typical IEPE sensors have a case that is electrically isolated from the

IEPE electronics. As a result, connecting the sensor to the NI-9232 results in a

floating connection even though the case of the sensor is grounded.

Wiring for High-Vibration Applications

If your application is subject to high vibration, NI recommends that you follow these

guidelines to protect connections to the NI-9232 with screw terminal:

■Use ferrules to terminate wires to the detachable connector.

■Use the NI 9971 backshell kit.

Where to Go Next

NI-9232 Getting Started

NI Services

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

downloads, and troubleshooting and application development self-help such as

tutorials and examples.

Visit ni.com/services to learn about NI service oerings such as calibration options,

repair, and replacement.

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

technical support and ensures that you receive important information updates from

NI.

NI corporate headquarters is located at 11500 N Mopac Expwy, Austin, TX,

78759-3504, USA.

ni.com

NI-9232 Getting Started

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