National Instruments NI 9214 Bedienungsanleitung

NI-9214

2023-04-25

Contents

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

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

Safety Guidelines for Hazardous Voltages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Safety Voltages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

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

Electromagnetic Compatibility Guidelines. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

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

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

TB-9214 Pinout. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Thermocouple Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

NI 9214 Connection Guidelines. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Minimizing Thermal Gradients. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Wiring the TB-9214. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Installing the TB-9214. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Where to Go Next. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Worldwide Support and Services. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

ni.com

NI-9214

Overview

This document explains how to connect to the NI 9214.

Note Before you begin, complete the soware and hardware installation

procedures in your chassis documentation.

Note The guidelines in this document are specific to the NI 9214. 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.

<National Instruments>\_Legal Information directory for information about NI

compliance.

Safety Guidelines

Operate the NI 9214 only as described in this document.

Caution Do not operate the NI 9214 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.

NI-9214

Hazardous Voltage This icon denotes a warning advising you to take

precautions to avoid electrical shock.

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

TB-9214 included with the NI 9214 to ensure that the terminals are not

accessible.

Safety Voltages

Connect only voltages that are within the following limits:

Between any two terminals ±30 V maximum

Isolation

Channel-to-channel None

Channel-to-earth ground

Continuous 250 Vrms, Measurement Category II

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NI-9214

Withstand 2,300 Vrms, verified by a 5 s dielectric withstand

test

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 9214 to signals or use for measurements

within Measurement Categories III or IV.

Safety Guidelines for Hazardous Locations

The NI 9214 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 9214 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.

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 signals must

be within the following limits.

NI-9214

Capacitance 0.2 µF maximum

Special Conditions for Hazardous Locations Use in Europe and

Internationally

The NI 9214 has been evaluated as Ex nA IIC T4 Gc equipment under DEMKO

Certificate No. 07 ATEX 0626664X and is IECEx UL 14.0089X certified. Each NI 9214 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 9214 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 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.com

NI-9214

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 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

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 9214 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-9214

TB-9214 Pinout

TC0+

TC2+

TC2-

TC3+

TC3-

TC4+

TC4-

TC7+

TC7-

TC8+

TC8-

TC9+

TC9-

TC10+

TC10-

TC11+

TC11-

TC12+

TC12-

TC13+

TC13-

TC14+

TC14-

TC15+

TC15-

TC0-

TC1+

TC1-

TC5+

TC5-

TC6+

TC6-

COM

Table 1. Signal Descriptions

Signal Description

COM Common reference connection

TC+ Positive thermocouple connection

TC- Negative thermocouple connection

Thermocouple Connections

Thermocouple

TC-

COM

TC+

Shield

TB-9214 NI 9214

Ground

Lug

NI 9214 Connection Guidelines

■Make sure that devices you connect to the NI 9214 are compatible with the

module specifications.

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NI-9214

■The shield grounding methodology can vary depending on the application.

■Refer to your thermocouple documentation or the thermocouple wire spool

to determine which wire is the positive lead and which wire is the negative

lead.

Minimizing Thermal Gradients

Changes in the ambient air temperature near the front connector or a thermocouple

wire conducting heat directly to terminal junctions can cause thermal gradients.

Observe the following guidelines to minimize thermal gradients and improve the

system accuracy.

■Use small-gauge thermocouple wire. Smaller wire transfers less heat to or

from the terminal junction.

■Run thermocouple wiring together near the TB-9214 to keep the wires at the

same temperature.

■Avoid running thermocouple wires near hot or cold objects.

■Minimize adjacent heat sources and air flow across the terminals.

■Keep the ambient temperature as stable as possible.

■Make sure the NI 9214 terminals are facing forward or upward.

■Keep the NI 9214 in a stable and consistent orientation.

■Allow the thermal gradients to settle aer a change in system power or in

ambient temperature. A change in system power can happen when the

system powers on, the system comes out of sleep mode, or you insert/remove

modules.

■If possible, use the foam pad in the TB-9214 opening to restrict airflow

around the terminals.

Wiring the TB-9214

What to Use

■TB-9214

■0.05 mm2 to 0.5 mm2 (30 AWG to 20 AWG) wire with 5.1 mm (0.2 in.) of the

inner insulation stripped and 51 mm (2.0 in.) of the outer insulation stripped

NI-9214

■Zip tie

■Screwdriver

What to Do

1 2

1. Loosen the captive screws on the TB-9214 and remove the top cover and foam

pad.

2. Insert the stripped end of the wire fully into the appropriate terminal and

tighten the screw for the terminal. Make sure no exposed wire extends past

the screw terminal.

3. Route the wire through the TB-9214 opening, remove slack from the wiring,

and secure the wires using a zip tie.

4. Replace the foam pad in the TB-9214 opening, reinstall the top cover, and

tighten the captive screws.

Installing the TB-9214

What to Do

1. Connect the TB-9214 to the NI 9214 front connector.

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NI-9214

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