NI 9201E Manuel utilisateur

OPERATING INSTRUCTIONS AND SPECIFICATIONS

NI 9201E/9221E

8-Channel, 12-Bit Analog Input Modules

NI 9201E/9221E 2 ni.com

This document describes how to use the National Instruments 9201E

and National Instruments 9221E and includes dimensions, terminal

assignments, and specifications for the NI 9201E/9221E. In this

document, the NI 9201E/9221E with screw terminal

and NI 9201E/9221E with DSUB are referred to inclusively

as the NI 9201E/9221E. Visit ni.com/info and enter

rdsoftwareversion to determine which software you need for the

modules you are using. For information about installing, configuring,

and programming the system, refer to the system documentation. Visit

ni.com/info and enter cseriesdoc for information about

C Series documentation.

Caution National Instruments makes no electromagnetic

compatibility (EMC) or CE marking compliance claims

for the NI 9201E/9221E. The end-product supplier is

responsible for conformity to any and all compliance

requirements.

Caution The NI 9201E/9221E must be installed inside a

suitable enclosure prior to use. Hazardous voltages may

be present.

NI 9201E/9221E Dimensions

The following figure shows the dimensions of the

NI 9201E/9221E.

Figure 1. NI 9201E/9221E Dimensions in Millimeters (Inches)

73.4 (2.89)

0.0 (0.00)

26.7 (1.05)

58.4 (2.30)

66.0 (2.60)

0.0 (0.00)

NI 9201E/9221E 4 ni.com

Connecting the NI 9201E/9221E

The NI 9201E/9221E provides connections for eight analog input

channels.

Figure 2. NI 9201E/9221E Terminal and Pin Assignments

COM

AI0

AI1

AI2

AI3

AI4

AI5

AI6

AI7

AI0

AI1

AI2

AI3

AI4

AI5

AI6

AI7

COM

The NI 9201E/9221E with screw terminal has a 10-terminal,

detachable screw-terminal connector. The NI 9201E/9221E with

DSUB has a 25-pin DSUB connector. Each channel has an AI

terminal or pin to which you can connect a voltage signal. COM,

the common terminal or pin, is internally connected to the isolated

ground reference of the module.

The NI 9201E/9221E channels are isolated from other modules in

the system. The module protects each channel from overvoltages.

Refer to the Specifications section for more information about

overvoltage protection. The input signals are scanned, buffered,

conditioned, and then sampled by a single 12-bit ADC. Refer to

Figure 3 for an illustration of the input circuitry on the

NI 9201E/9221E.

Figure 3. Input Circuitry on the NI 9201E/9221E

NI 9201E/9221E

Buffer Isolated

ADC

Overvoltage

Protection Mux

COM

AI7

AI0

NI 9201E/9221E 6 ni.com

You can connect single-ended voltage signals to the

NI 9201E/9221E. Connect the positive lead of the voltage signal

to AI. Connect the ground signal to COM. Refer to Figure 4 for an

illustration of connecting a single-ended voltage signal to the

NI 9201E/9221E.

Figure 4. Connecting a Single-Ended Voltage Signal to the NI 9201E/9221E

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 9201E/9221E with screw

terminal.

COM

–

Voltage

Source

NI 9201E/9221E

Sleep Mode

This module supports a low-power sleep mode. Support for sleep

mode at the system level depends on the chassis that the module is

plugged into. Refer to the chassis manual for information about

support for sleep mode. If the chassis supports sleep mode, refer to

the software help for information about enabling sleep mode. Visit

ni.com/info and enter cseriesdoc for information about

C Series documentation.

Typically, when a system is in sleep mode, you cannot

communicate with the modules. In sleep mode, the system

consumes minimal power and may dissipate less heat than it does

in normal mode. Refer to the Specifications section for more

information about power consumption and thermal dissipation.

NI 9201E/9221E 8 ni.com

Specifications

The following specifications are typical for the range –40 to 85 °C

internal to any enclosures unless otherwise noted. All voltages are

relative to COM unless otherwise noted. The specifications are the

same for the NI 9201E and the NI 9221E unless otherwise noted.

Input Characteristics

Number of channels..........................8 analog input channels

ADC resolution................................. 12 bits

Type of ADC..................................... Successive approximation

Sample rate (aggregate)

Module

Maximum

Sample Rate

(R Series Expansion Chassis)

Maximum

Sample Rate

(All Other Chassis)

NI 9201E,

single channel

475 kS/s 800 kS/s

NI 9201E,

scanning

475 kS/s 500 kS/s

NI 9221E 475 kS/s 800 kS/s

Input range

NI 9201E ....................................±10 V

NI 9221E ....................................±60 V

Operating voltage ranges

Overvoltage protection

(channel-to-COM) ............................ ±100 V

Module

Measurement Voltage,

Channel-to-COM

Maximum Voltage,

Channel-to-Earth Ground

or COM-to-Earth Ground

Min

(V)

Typ

(V)

Max

(V)

Screw

Ter mi nal DSUB

NI 9201E ±10.3 ±10.53 ±10.8 250 Vrms ±60 VDC

NI 9221E ±61.4 ±62.50 ±63.8

NI 9201E/9221E 10 ni.com

NI 9201E accuracy (excludes noise)

Measurement Conditions

Percent of

Reading

(Gain Error)

Percent of

Range*

(Offset Error)

Calibrated typ (25 °C, ±5 °C) ±0.04% ±0.07%

Calibrated max (–40 to 85 °C) ±0.25% ±0.25%

Uncalibrated typ (25 °C, ±5 °C) ±0.26% ±0.46%

Uncalibrated max (–40 to 85 °C) ±0.67% ±1.25%

*Range equals 10.53 V

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