Technical Sales

(866) 531-6285
orders@ni.com

Ordering Information | Detailed Specifications | Pinouts/Front Panel Connections

For user manuals and dimensional drawings, visit the product page resources tab on ni.com.

Last Revised: 2014-11-06 07:14:26.0

NI 9422
24 V to 60 V, Sinking/Sourcing Digital Input, 8 Ch Module

8-channel, 250 µs digital input 250 Vrms channel-to-channel, CAT II isolation

24 V up to 60 V, sinking/sourcing digital inputs 16-pos screw-terminal connector
Compatible with NI CompactDAQ counters -40 °C to 70 °C operating, 5 g vibration, 50 g shock

Overview
The NI 9422 is an 8-channel, 250 µs sinking/sourcing digital input module. Each channel accommodates 24 V up to 60 V digital input signals and features channel-to-channel
isolation for the highest level of safety for automotive and industrial environments. Any discrete level connected to the NI 9422 under 5 V registers as a digital low and any discrete
level between 11 V and 60 V registers as a digital high. The NI 9422 features 1,390 Vrms transient overvoltage protection between the input channels, 250 Vrms continuous
channel-to-channel isolation, and 250 Vrms continuous isolation between each channel and earth ground. The NI 9422 works with a variety of industrial logic levels and signals to
directly connect to a wide array of industrial and automotive switches, transducers, and devices.

The NI 9422 module is a correlated digital module, so it can perform correlated operations, triggering, and synchronization when installed in an NI CompactDAQ chassis.

Recommended Accessories
-NI 9939 backshell for 16-position connector block

Box Contents
-1 NI 9422 C Series module
-1 NI 9422 Operating Instructions and Specifications manual
-1 NI 9975 16-position screw-terminal connector block

Back to Top

Comparison Tables

Product Name Signal Levels Direction Channels Update Rate Isolation Connectivity

NI 9375 24 V Sinking Input, Sourcing Output 16 In, 16 Out 7 µs In, 500 µs Out 60 VDC Ch-Earth Spring Terminal, 37-Pin D-Sub

NI 9411 ±5, 24 V Sinking/Sourcing Diff/SE Input 6 500 ns 60 VDC Ch-Earth 15-Pin D-SUB

NI 9421 24 V Sinking Input 8 100 µs 60 VDC (D-SUB), 250 Vrms (ST) Screw-Terminal, 25-Pin D-SUB

NI 9422 24, 48, 60 V Sinking/Sourcing Input 8 250 µs 250 Vrms Ch-Ch Screw Terminal

NI 9423 24 V Sinking Input 8 1 µs 250 Vrms Ch-Earth Screw Terminal

NI 9425 24 V Sinking Input 32 7 µs 60 VDC Ch-Earth 37-Pin D-SUB

NI 9426 24 V Sourcing Input 32 7 µs 60 VDC Ch-Earth 37-Pin D-SUB

NI 9435 250 VDC/VAC Sinking/Sourcing Input 4 3 ms 250 Vrms Ch-Earth Screw Terminal

Back to Top

1/7 www.ni.com
Application and Technology
NI C Series Overview

NI C Series modules are engineered to provide high-accuracy measurements to meet the demands of advanced data acquisition and control applications. Each module contains
measurement-specific signal conditioning to connect to an array of sensors and signals, bank and channel-to-channel isolation options, and support for wide temperature ranges
to meet a variety of application and environmental needs all in a single rugged package. You can choose from more than 100 C Series modules for measurement, control, and
communication to connect your applications to any sensor on any bus.

Most C Series I/O modules work with both the NI CompactDAQ and CompactRIO platforms. The modules are identical, and you can move them from one platform to the other
with no modification.

NI CompactRIO Platform

Powered by the LabVIEW reconfigurable I/O (RIO) architecture, CompactRIO combines an open embedded architecture with small size, extreme ruggedness, and hot-swappable
industrial I/O modules. Each system contains an FPGA for custom timing, triggering, and processing with a wide array of modular I/O to meet any embedded application
requirement.

Configure Your Complete NI CompactRIO System

NI CompactDAQ Platform

NI CompactDAQ is a portable, rugged data acquisition platform that integrates connectivity and signal conditioning into modular I/O to directly interface with any sensor or signal.
Using NI CompactDAQ with LabVIEW, you can easily customize how you acquire, analyze, present, and manage your measurement data. From research to development to
validation, NI provides programmable software, high-accuracy measurements, and local technical support to help meet your exact measurement application requirements.

Configure Your Complete NI CompactDAQ System

Back to Top

2/7 www.ni.com
Ordering Information
For a complete list of accessories, visit the product page on ni.com.

Products Part Number Recommended Accessories Part Number

NI 9422 Digital Input

NI 9422 779522-01 Connectivity Accessories: screwTerminal - NI 9939 Strain relief, operator protection (qty 1) 192692-01
Requires: 1 Connectivity Accessories ;

Back to Top

Software Recommendations
LabVIEW Professional Advanced software tools for large project NI LabVIEW FPGA Module Design FPGA applications for NI
Development System for development reconfigurable I/O (RIO) hardware targets
Windows Automatic code generation using DAQ Program with the same graphical
Assistant and Instrument I/O Assistant environment used for desktop and real-time
Tight integration with a wide range of applications
hardware Execute control algorithms with loop rates up
Advanced measurement analysis and digital to 300 MHz
signal processing Implement custom timing and triggering logic,
digital protocols, and DSP algorithms
Open connectivity with DLLs, ActiveX, and
.NET objects Incorporate existing HDL code and third-party
IP including Xilinx CORE Generator functions
Capability to build DLLs, executables, and
MSI installers Included in the LabVIEW Embedded Control
and Monitoring Suite

NI LabVIEW Real-Time Design deterministic real-time applications

Module with LabVIEW graphical programming
Download to dedicated NI or third-party
hardware for reliable execution and a wide
selection of I/O
Take advantage of built-in PID control, signal
processing, and analysis functions
Automatically take advantage of multicore
CPUs or set processor affinity manually
Includes real-time OS, development and
debugging support, and board support
Purchase individually or as part of a
LabVIEW suite

Back to Top

Support and Services

System Assurance Programs
NI system assurance programs are designed to make it even easier for you to own an NI system. These programs include configuration and deployment services for your NI PXI,
CompactRIO, or Compact FieldPoint system. The NI Basic System Assurance Program provides a simple integration test and ensures that your system is delivered completely
assembled in one box. When you configure your system with the NI Standard System Assurance Program, you can select from available NI system driver sets and application
development environments to create customized, reorderable software configurations. Your system arrives fully assembled and tested in one box with your software preinstalled.
When you order your system with the standard program, you also receive system-specific documentation including a bill of materials, an integration test report, a recommended
maintenance plan, and frequently asked question documents. Finally, the standard program reduces the total cost of owning an NI system by providing three years of warranty
coverage and calibration service. Use the online product advisors at ni.com/advisor to find a system assurance program to meet your needs.

Calibration
NI measurement hardware is calibrated to ensure measurement accuracy and verify that the device meets its published specifications. To ensure the ongoing accuracy of your
measurement hardware, NI offers basic or detailed recalibration service that provides ongoing ISO 9001 audit compliance and confidence in your measurements. To learn more
about NI calibration services or to locate a qualified service center near you, contact your local sales office or visit ni.com/calibration.

Technical Support
Get answers to your technical questions using the following National Instruments resources.
Support - Visit ni.com/support to access the NI KnowledgeBase, example programs, and tutorials or to contact our applications engineers who are located in NI sales
offices around the world and speak the local language.
Discussion Forums - Visit forums.ni.com for a diverse set of discussion boards on topics you care about.
Online Community - Visit community.ni.com to find, contribute, or collaborate on customer-contributed technical content with users like you.

Repair

3/7 www.ni.com
While you may never need your hardware repaired, NI understands that unexpected events may lead to necessary repairs. NI offers repair services performed by highly trained
technicians who quickly return your device with the guarantee that it will perform to factory specifications. For more information, visit ni.com/repair.

Training and Certifications

The NI training and certification program delivers the fastest, most certain route to increased proficiency and productivity using NI software and hardware. Training builds the skills
to more efficiently develop robust, maintainable applications, while certification validates your knowledge and ability.
Classroom training in cities worldwide - the most comprehensive hands-on training taught by engineers.
On-site training at your facility - an excellent option to train multiple employees at the same time.
Online instructor-led training - lower-cost, remote training if classroom or on-site courses are not possible.
Course kits - lowest-cost, self-paced training that you can use as reference guides.
Training memberships and training credits - to buy now and schedule training later.
Visit ni.com/training for more information.

Extended Warranty
NI offers options for extending the standard product warranty to meet the life-cycle requirements of your project. In addition, because NI understands that your requirements may
change, the extended warranty is flexible in length and easily renewed. For more information, visit ni.com/warranty.

OEM
NI offers design-in consulting and product integration assistance if you need NI products for OEM applications. For information about special pricing and services for OEM
customers, visit ni.com/oem.

Alliance
Our Professional Services Team is comprised of NI applications engineers, NI Consulting Services, and a worldwide National Instruments Alliance Partner program of more than
700 independent consultants and integrators. Services range from start-up assistance to turnkey system integration. Visit ni.com/alliance.

Back to Top

Detailed Specifications

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

Input Characteristics

Number of channels 8 digital input channels

Input type Sinking/sourcing

Digital logic levels

OFF state

Input voltage ≤5 V

Input current ≤0.17 mA

ON state

Input voltage 11 to 60 V

Input current ≥1.2 mA

I/O protection

Input voltage 250 Vrms max

Input current 4 mA max, internally limited

Input delay time

OFF to ON 250 μs max, 4 μs typical

ON to OFF 250 μs max, 130 μs typical

1,220,439 hours at 25 °C; Bellcore Issue 2, Method 1, Case 3, Limited Part
MTBF
Stress Method
Note Contact NI for Bellcore MTBF specifications at other temperatures or for MIL-HDBK-217F specifications. Go to ni.com/certification and search by for more
information about MTBF and other product certifications.

Power Requirements

Power consumption from chassis

Active mode 55 mW max

4/7 www.ni.com
 Sleep mode 2 mW max

Thermal dissipation (at 70 °C)

Active mode 1.4 W

Sleep mode 1.25 W

Physical Characteristics

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

Note For two-dimensional drawings and three-dimensional models of the C Series module and connectors, visit ni.com/dimensions and search by module number.
16 to 28 AWG copper conductor wire with 7 mm (0.28 in.) of insulation stripped
Screw-terminal wiring
from the end
Torque for screw terminals 0.22 to 0.25 N · m (1.95 to 2.21 lb · in.)

Ferrules 0.25 mm2 to 0.5 mm2

Weight Approx. 131 g (4.7 oz)

Safety

Safety Voltages
Connect only voltages that are within the following limits.
Between two terminals 250 Vrms, max

Isolation

Channel-to-channel

Continuous 250 Vrms, Measurement Category II

Withstand 1,390 Vrms, verified by a 5 s dielectric withstand test

Channel-to-earth ground

Continuous 250 Vrms, Measurement Category II

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 (MAINS 1 ). This category refers to local-level electrical
distribution, such as that provided by a standard wall outlet (for example, 115 AC voltage for U.S. or 230 AC voltage for Europe). Examples of Measurement Category II are
measurements performed on household appliances, portable tools, and similar hardware.

Caution Do not connect the NI 9422 to signals or use for measurements within Measurement Categories III or IV.

Hazardous Locations

U.S. (UL) Class I, Division 2, Groups A, B, C, D, T4

Note The NI 9422 is not approved for use in hazardous locations in Europe or Canada.

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 the Online Product Certification section.

Electromagnetic Compatibility

This product meets the requirements of the following EMC standards for electrical equipment for measurement, control, and laboratory use:

EN 61326 (IEC 61326): Class A emissions; Industrial Immunity

EN 55011 (CISPR 11): Group 1, Class A emissions
AS/NZS CISPR 11: Group 1, Class A emissions
FCC 47 CFR Part 15B: Class A emissions
ICES-001: Class A emissions

Note For the standards applied to assess the EMC of this product, refer to the Online Product Certification section.

Note For EMC compliance, operate this device with shielded cables.

CE Compliance

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

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

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

Note For the standards applied to assess the EMC of this product, refer to the Online Product Certification section.

5/7 www.ni.com
 Online Product Certification

Refer to the product Declaration of Conformity (DoC) for additional regulatory compliance information. To obtain product certifications and 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.

Shock and Vibration

To meet these specifications, you must panel mount the system and either affix ferrules to the ends of the terminal wires or use the NI 9939 backshell kit to protect the
connections.
Operating vibration

Random (IEC 60068-2-64) 5 grms, 10 to 500 Hz

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

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

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.

For additional environmental information, refer to the NI and the 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 ni.com/environment/weee.htm.

1
MAINS is defined as a hazardous live electrical supply system that powers hardware. Suitably rated measuring circuits may be connected to the MAINS for measuring purposes.

Back to Top

6/7 www.ni.com
Pinouts/Front Panel Connections

NI 9422 Terminal Assignments

Back to Top

©2014 National Instruments. All rights reserved. CompactRIO, FieldPoint, LabVIEW, National Instruments, NI, and ni.com are trademarks of National Instruments. Other product and company names listed are
trademarks or trade names of their respective companies. A National Instruments Alliance Partner is a business entity independent from National Instruments and has no agency, partnership, or joint-venture
relationship with National Instruments.

My Profile | RSS | Privacy | Legal | Contact NI © 2014 National Instruments Corporation. All rights reserved.

7/7 www.ni.com