National Instruments 9221, 9201 User Manual

OPERATING INSTRUCTIONS AND SPECIFICATIONS

NI 9201/9221

8-Channel, 12-Bit Analog Input Modules

DeutschFrançais

ni.com/manuals

This document describes how to use the National Instruments 9201
and National Instruments 9221 and includes specifications and
terminal assignments for the NI 9201/9221. In this document,
the NI 9201/9221 with screw terminal and NI 9201/9221 with
DSUB are referred to inclusively as the NI 9201/9221. 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
and enter

cseriesdoc for information about C Series

ni.com/info

documentation.

Note The safety guidelines and specifications in this

document are specific to the NI 9201/9221. The other
components in the system might not meet the same safety
ratings and specifications. Refer to the documentation for
each component in the system to determine the safety
ratings and specifications for the entire system. Visit

ni.com/info and enter cseriesdoc for information

about C Series documentation.

NI 9201/9221 2 ni.com

Safety Guidelines

Operate the NI 9201/9221 only as described in these operating
instructions.

Hot Surface This icon denotes that the component may be

hot. Touching this component may result in bodily injury.

Safety Guidelines for Hazardous Voltages

Yo u can connect hazardous voltages only to the NI 9201/9221 with
screw terminal. Do not connect hazardous voltages to the
NI 9201/9221 with DSUB.

If hazardous voltages are connected to the module, take the
following precautions. A hazardous voltage is a voltage greater
than 42.4 V

© National Instruments Corp. 3 NI 9201/9221

or 60 VDC to earth ground.

pk

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 Make sure that devices and circuits connected to

the module are properly insulated from human contact.

Caution When module terminals are hazardous voltage

LIVE (>42.4 V

/60 VDC), you must ensure that devices

pk

and circuits connected to the module are properly
insulated from human contact. You must use the NI 9932
connector backshell kit to ensure that the terminals are
not accessible.

Figure 1 shows the NI 9932 connector backshell.

Note Yo u can use the NI 9932 connector backshell only

with the NI 9201/9221 with screw terminal.

NI 9201/9221 4 ni.com

Figure 1. NI 9932 Connector Backshell

Safety Guidelines for Hazardous Locations

The NI 9201/9221 is suitable for use in Class I, Division 2,
Groups A, B, C, D, T4 hazardous locations; Class I, Zone 2,
AEx nC IIC T4, and Ex nC IIC T4 hazardous locations; and
nonhazardous locations only. Follow these guidelines if you are
installing the NI 9201/9221 in a potentially explosive environment.
Not following these guidelines may result in serious injury or
death.

© National Instruments Corp. 5 NI 9201/9221

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 Zone 2 applications, install the system

in an enclosure rated to at least IP 54 as defined by
IEC 60529 and EN 60529.

Caution For Zone 2 applications, install a protection

device between the input signal and the NI 9201/9221
input terminal. The device must prevent the input
channel-to-COM voltage from exceeding 85 V if there is
a transient overvoltage condition.

Special Conditions for Hazardous Locations Use in Europe

This equipment has been evaluated as EEx nC IIC T4 equipment
under DEMKO Certificate No. 03 ATEX 0324020X. Each module
is marked II 3G and is suitable for use in Zone 2 hazardous

NI 9201/9221 6 ni.com

locations. If you are using the NI 9201/9221 in Gas Group IIC
hazardous locations or in ambient temperatures of
–40 °C ≤ Ta ≤ 70 °C, you must use the device in an NI chassis
that has been evaluated as EEx nC IIC T4, Ex nA IIC T4, or
Ex nL IIC T4 equipment.

Special Conditions for Marine Applications

Some modules are Lloyd’s Register (LR) Type Approved for
marine applications. To verify Lloyd’s Register certification, visit

ni.com/certification and search for the LR certificate, or

look for the Lloyd’s Register mark on the module.

Caution To meet radio frequency emission requirements

for marine applications, use shielded cables and install
the system in a metal enclosure. Suppression ferrites
must be installed on power supply inputs near power
entries to modules and controllers. Power supply and
module cables must be separated on opposite sides of the
enclosure and must enter and exit through opposing
enclosure walls.

© National Instruments Corp. 7 NI 9201/9221

Connecting the NI 9201/9221

The NI 9201/9221 provides connections for eight analog input
channels.

AI0
AI1
AI2
AI3
AI4
AI5
AI6
AI7
NC
COM

0
1
2
3
4
5
6
7
8
9

AI0
NC
AI1
AI2
NC
AI3
AI4
NC
AI5
AI6
NC
AI7

1

14
15
16
17
18
19
20
21
22
23
24
25

COM

2

NC

3

COM

4

COM

5

NC

6

COM

7

COM

8

NC

9

COM

10

COM

11

NC

12

COM

13

COM

Figure 2. NI 9201/9221 Terminal and Pin Assignments

NI 9201/9221 8 ni.com

The NI 9201/9221 with screw terminal has a 10-terminal,
detachable screw-terminal connector. The NI 9201/9221 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 9201/9221 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 9201/9221.

AI0

Overvoltage

Protection

AI7

COM

Figure 3. Input Circuitry on the NI 9201/9221

© National Instruments Corp. 9 NI 9201/9221

Mux

Buffer

Isolated

ADC

NI 9201/9221

Yo u can connect single-ended voltage signals to the NI 9201/9221.
Connect the positive lead of the voltage signal to AI. Connect the
ground signal to COM. Refer to Figure 3 for an illustration of
connecting a single-ended voltage signal to the NI 9201/9221.

AI

Voltage
Source

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

Note

Yo u must use 2-wire ferrules to create a secure

+

–

COM

NI 9201/9221

connection when connecting more than one wire to a
single terminal on the NI 9201/9221 with screw terminal.

Wiring for High-Vibration Applications

If an application using the NI 9201/9221 with screw terminal is
subject to high vibration, National Instruments recommends that
you either use ferrules to terminate wires to the detachable

NI 9201/9221 10 ni.com

screw-terminal connector or use the NI 9932 backshell kit to
protect the connections. Refer to Figure 5 for an illustration of
using ferrules. Refer to Figure 1 for an illustration of the NI 9932
connector backshell.

Figure 5. 10-Terminal Detachable Screw-Terminal Connector with Ferrule

© National Instruments Corp. 11 NI 9201/9221

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.

Specifications

The following specifications are typical for the range –40 to 70 °C
unless otherwise noted. All voltages are relative to COM unless
otherwise noted.

NI 9201/9221 12 ni.com

Input Characteristics

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

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

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

register (SAR)

Sample rate (aggregate)

Maximum Sample

Module

NI 9201,
single channel

NI 9201, scanning 475 kS/s 500 kS/s

NI 9221 475 kS/s 800 kS/s

Rate (R Series

Expansion Chassis)

475 kS/s 800 kS/s

Input range

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

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

© National Instruments Corp. 13 NI 9201/9221

Maximum

Sample Rate

(All Other Chassis)

Operating voltage ranges

1

Maximum Voltage,

Measurement Voltage,

Channel-to-COM

Module

Min

(V)

Typ

(V)

NI 9201 ±10.3 ±10.53 ±10.8 250 V

Channel-to-Earth Ground or

COM-to-Earth Ground

Max

(V)

Screw

Terminal

rms

DSUB

±60 VDC

NI 9221 ±61.4 ±62.50 ±63.8

Overvoltage protection

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

1

Refer to the Safety Guidelines section for more information about safe operating
voltages.

NI 9201/9221 14 ni.com

NI 9201 accuracy (excludes noise)

Percent of

Reading

Measurement Conditions

(Gain Error)

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

Calibrated max (–40 to 70 ºC) ±0.25% ±0.25%

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

Uncalibrated max (–40 to 70 ºC) ±0.67% ±1.25%

*

Range equals 10.53 V

© National Instruments Corp. 15 NI 9201/9221

Percent of

*

Range

(Offset Error)

NI 9221 accuracy (excludes noise)

Percent of

Reading

Measurement Conditions

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

Calibrated max (–40 to 70 ºC) ±0.25% ±0.25%

Uncalibrated typ (25 °C, ±5 °C) ±0.26% ±0.43%

Uncalibrated max (–40 to 70 ºC) ±0.67% ±1.06%

*

Range equals 62.50 V

(Gain Error)

Percent of

*

Range

(Offset Error)

Stability

Gain drift .................................... ±34 ppm/°C

Offset drift

NI 9201 ................................±100 μV/°C

NI 9221 ................................±580 μV/°C

Input bandwidth (–3 dB)

NI 9201....................................... 690 kHz min

NI 9221....................................... 950 kHz min

NI 9201/9221 16 ni.com

Input impedance

Resistance................................... 1 MΩ

Capacitance ................................ 5 pF

Input noise (code-centered)

RMS ........................................... 0.7 LSB

rms

Peak-to-peak............................... 5 LSB

No missing codes .............................. 12 bits

DNL .................................................. –0.9 to 1.5 LSB

INL.................................................... ±1.5 LSB

Crosstalk (at 10 kHz)........................ –75 dB

Settling time (to 1 LSB)

NI 9201....................................... 2 μs

NI 9221....................................... 1.25 μs

© National Instruments Corp. 17 NI 9201/9221

MTBF ............................................... 1,485,465 hours at 25 °C;

Bellcore Issue 6, Method 1,
Case 3, Limited Part Stress
Method

Note Contact NI for Bellcore MTBF specifications

at other temperatures or for MIL-HDBK-217F
specifications.

Power Requirements

Power consumption from chassis

Active mode ...............................550 mW max

Sleep mode ................................. 1 mW max

Thermal dissipation (at 70 °C)

Active mode ............................... 600 mW max

Sleep mode ................................. 32 mW max

NI 9201/9221 18 ni.com

Physical Characteristics

If you need to clean the module, wipe it with a dry towel.

Screw-terminal wiring ...................... 12 to 24 AWG copper

conductor wire with 10 mm
(0.39 in.) of insulation
stripped from the end

Ferrules ............................................. 0.25 mm

2

to 2.5 mm

2

Torq ue for screw terminals ............... 0.5 to 0.6 N · m

(4.4 to 5.3 lb · in.)

Weight

NI 9201/9221

with screw terminal .................... 150 g (5.3 oz)

NI 9201/9221 with DSUB.......... 145 g (5.1 oz)

Safety

Safety Voltages

Connect only voltages that are within the following limits.

Channel-to-COM .............................. ±60 VDC max

© National Instruments Corp. 19 NI 9201/9221

NI 9201/9221 with Screw Terminal Isolation Voltages

Channel-to-channel........................... No isolation between

Channel-to-earth ground

Continuous ................................. 250 V

Withstand.................................... 2,300 V

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 9201/9221 with screw

terminal to signals or use for measurements within
Measurement Categories III or IV.

NI 9201/9221 20 ni.com

channels

,

rms

Measurement Category II

, verified by a 5 s

rms

dielectric withstand test

NI 9201/9221 with DSUB Isolation Voltages

Channel-to-channel........................... No isolation between

Channel-to-earth ground

Continuous ................................. 60 VDC,

Withstand.................................... 1,000 V

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.

Caution Do not connect the NI 9201/9221 with DSUB to

signals or use for measurements within Measurement
Categories II, III, or IV.

© National Instruments Corp. 21 NI 9201/9221

channels

Measurement Category I

, verified by a 5 s

rms

dielectric withstand test

Safety Standards

This product is designed to meet the requirements of the following
standards of safety for electrical equipment for measurement,
control, and laboratory use:

• IEC 61010-1, EN 61010-1

• UL 61010-1, CSA 61010-1

Note For UL and other safety certifications, refer to the

product label or visit

ni.com/certification, search

by modu le number or product line, and click the
appropriate link in the Certification column.

Hazardous Locations

U.S. (UL) .......................................... Class I, Division 2,

Groups A, B, C, D, T4;
Class I, Zone 2,
AEx nC IIC T4

Canada (C-UL) ................................. Class I, Division 2,

Groups A, B, C, D, T4;
Class I, Zone 2,
Ex nC IIC T4

Europe (DEMKO)............................. EEx nC IIC T4

NI 9201/9221 22 ni.com

Environmental

National Instruments C Series modules are intended for indoor use
only but may be used outdoors if installed in a suitable enclosure.
Refer to the manual for the chassis you are using for more
information about meeting these specifications.

Operating temperature

(IEC 60068-2-1, IEC 60068-2-2) .....–40 to 70 °C

Storage temperature

(IEC 60068-2-1, IEC 60068-2-2) .....–40 to 85 °C

Ingress protection.............................. IP 40

Operating humidity

(IEC 60068-2-56).............................. 10 to 90% RH,

noncondensing

Storage humidity

(IEC 60068-2-56).............................. 5 to 95% RH,

noncondensing

Maximum altitude............................. 2,000 m

Pollution Degree (IEC 60664).......... 2

© National Instruments Corp. 23 NI 9201/9221

Shock and Vibration

To meet these specifications, you must panel mount the system. If
you are using the NI 9201/9221 with screw terminal, you also must
either affix ferrules to the ends of the terminal wires or use the
NI 9932 backshell kit to protect the connections.

Operating vibration

Random (IEC 60068-2-64)......... 5 g

, 10 to 500 Hz

rms

Sinusoidal (IEC 60068-2-6) .......5 g, 10 to 500 Hz

Operating shock (IEC 60068-2-27).... 30 g, 11 ms half sine,

50 g, 3 ms half sine,
18 shocks at 6 orientations

Electromagnetic Compatibility

This product is designed to meet the requirements of the following
standards of EMC for electrical equipment for measurement,
control, and laboratory use:

• EN 61326 EMC requirements; Industrial Immunity

• EN 55011 Emissions; Group 1, Class A

• CE, C-Tick, ICES, and FCC Part 15 Emissions; Class A

NI 9201/9221 24 ni.com

Note For EMC compliance, operate this device with

shielded cabling.

CE Compliance

This product meets the essential requirements of applicable
European directives, as amended for CE markings, as follows:

• 2006/95/EC; Low-Voltage Directive (safety)

• 2004/108/EC; Electromagnetic Compatibility Directive
(EMC)

Note Refer to the Declaration of Conformity (DoC) for

this product for any additional regulatory compliance
information. To obtain the DoC for this product, visit

ni.com/certification, search by module number or

product line, and click the appropriate link in the
Certification column.

Environmental Management

National Instruments is committed to designing and manufacturing
products in an environmentally responsible manner. NI recognizes
that eliminating certain hazardous substances from our products is
beneficial not only to the environment but also to NI customers.

© National Instruments Corp. 25 NI 9201/9221

For additional environmental information, refer to the NI and the

⬉ᄤֵᙃѻક∵ᶧ᥻ࠊㅵ⧚ࡲ⊩ ˄Ё೑

˅

Ё೑ᅶ᠋

Environment Web page at

ni.com/environment. This page

contains the environmental regulations and directives with which
NI complies, as well as other environmental information not
included in this document.

Waste Electrical and Electronic Equipment (WEEE)

EU Customers At the end of their life cycle, all products

must be sent to a WEEE recycling center. For more
information about WEEE recycling centers and National
Instruments WEEE initiatives, visit

environment/weee.htm

.

ni.com/

RoHS

ѻકЁ䰤ࠊՓ⫼ᶤѯ᳝ᆇ⠽䋼ᣛҸ

National InstrumentsЁ೑RoHS

National Instruments

ni.com/environment/rohs_china

about China RoHS compliance, go to

NI 9201/9221 26 ni.com

environment/rohs_china

ヺড়Ё೑⬉ᄤֵᙃ

DŽ݇Ѣ

(RoHS)

ড়㾘ᗻֵᙃˈ䇋ⱏᔩ

DŽ

(For information

ni.com/

.)

Calibration

Yo u can obtain the calibration certificate and information about
calibration services for the NI 9201/9221 at

calibration

.

ni.com/

Calibration interval ........................... 1 year

Where to Go for Support

The National Instruments Web site is your complete resource for
technical support. At
everything from troubleshooting and application development
self-help resources to email and phone assistance from
NI Application Engineers.

National Instruments corporate headquarters is located at
11500 North Mopac Expressway, Austin, Texas, 78759-3504.
National Instruments also has offices located around the world to
help address your support needs. For telephone support in the
United States, create your service request at
and follow the calling instructions or dial 512 795 8248. For
telephone support outside the United States, contact your local
branch office:

Australia 1800 300 800, Austria 43 662 457990-0,
Belgium 32 (0) 2 757 0020, Brazil 55 11 3262 3599,

© National Instruments Corp. 27 NI 9201/9221

ni.com/support you have access to

ni.com/support

Canada 800 433 3488, China 86 21 5050 9800,
Czech Republic 420 224 235 774, Denmark 45 45 76 26 00,
Finland 358 (0) 9 725 72511, France 01 57 66 24 24,
Germany 49 89 7413130, India 91 80 41190000,
Israel 972 3 6393737, Italy 39 02 41309277, Japan 0120-527196,
Korea 82 02 3451 3400, Lebanon 961 (0) 1 33 28 28,
Malaysia 1800 887710, Mexico 01 800 010 0793,
Netherlands 31 (0) 348 433 466, New Zealand 0800 553 322,
Norway 47 (0) 66 90 76 60, Poland 48 22 3390150,
Portugal 351 210 311 210, Russia 7 495 783 6851,
Singapore 1800 226 5886, Slovenia 386 3 425 42 00,
South Africa 27 0 11 805 8197, Spain 34 91 640 0085,
Sweden 46 (0) 8 587 895 00, Switzerland 41 56 2005151,
Taiwan 886 02 2377 2222, Thailand 662 278 6777,
Turkey 90 212 279 3031, United Kingdom 44 (0) 1635 523545

National Instruments, NI, ni.com, and LabVIEW are trademarks of National Instruments Corporation. Refer to the
Terms of Use section on
product and company names mentioned herein are trademarks or trade names of their respective companies.
For patents covering National Instruments products, refer to the appropriate location: Help»Patents in your software,

patents.txt file on your CD, or ni.com/patents.

the

© 2004–2008 National Instruments Corp. All rights reserved.

373783F-01 Feb08

ni.com/legal for more information about National Instruments trademarks. Other