NI USB-9481

Portable USB-Based
High-Voltage Digital I/O
NI USB-9421, NI USB-9472, NI USB-9481 NEW!
• Small, portable devices
(12.1 by 8.6 by 2.5 cm)
• 4 or 8 channels with 24 V
logic levels
• High current-switching capacity
• 250 Vrms channel-to-earth
ground isolation
• Plug-and-play connectivity
via USBs
• Screw-terminal and D-Sub
connectors for direct wiring to
industrial sensors and actuators
Product
USB-9421
USB-9472
USB-9481
1For
Bus
USB
USB
USB
Input Lines
8 sink
–
–
Operating Systems
• Windows 2000/XP
Recommended Software
• LabVIEW
• LabWindows/CVI
Measurement Services
Software (included)
• NI-DAQmx driver software
• VI Logger Lite data-logging
software
Output Lines
–
8 source
4 Form A Relay
Isolation
Bank
Bank
Bank
Signal Levels
11 to 30 V
6 to 30 V
60 VDC
250 VAC/VDC
Output Current per Channel
–
0.75 A
2 A (30 VDC)
1 A (60 VDC)
Connector
Screw Terminal, D-Sub
Screw Terminal, D-Sub
Screw Terminal
Driver Software1
NI-DAQmx
NI-DAQmx
NI-DAQmx
up-to-date information on NI-DAQ, visit ni.com/support/daq/versions.htm.
Table 1. Portable USB DAQ for High-Voltage Digital I/O Selection Guide
Hardware Description
Common Applications
National Instruments USB-9421, USB-9472, and USB-9481 are data
acquisition modules with integrated signal conditioning. They
provide plug-and-play connectivity via USB for faster setup and
measurements, offering four or eight digital input or output channels
specifically designed for monitoring and control applications. The
NI USB-9421 digital input module accepts high-voltage levels
between 11 and 30 V for direct connection to 24 V systems. The
NI USB-9472 can source up to 30 V externally powered at 0.75 A of
current per channel, and the NI USB-9481 uses electromechanical
relays that can switch 2 A at 30 VDC and 1 A at 60 VDC. In addition,
these modules include channel-to-earth ground isolation for safety,
noise immunity and high common-mode voltage range.
The USB-9421, USB-9472, and USB-9481 are ideal for monitoring
and control applications where easy connectivity and portability are
essential, such as:
• Portable industrial monitoring and controlling motors, fans,
pumps, relays, and limit switches
• Data logging
• Small form-factor applications
• Embedded OEM applications
• In-vehicle data acquisition
• Academic lab use
Software Description
The USB-9421, USB-9472, and USB-9481 all use NI-DAQmx
high-performance, multithreaded driver software for interactive
configuration and data acquisition on Windows OSs. Use
NI-DAQmx to test channels, generate code, and apply custom
functionality to any of your measurements. All NI data acquisition
devices shipped with NI-DAQmx also include VI Logger Lite
configuration-based data-logging software.
Recommended Accessories
The USB-9421, USB-9472, and USB-9481 all have built-in screwterminal connectivity, so no additional accessories are required. The
USB-9421 and USB-9472 are also available with D-Sub connector
options that connect to the NI 9934 strain relief accessory, or any
other standard 25-pin D-Sub connector.
Information for OEM Customers
For information on special configurations and pricing, please
visit ni.com/oem.
Ordering Information
NI USB-9421
Screw Terminals ........................................................779451-01
D-Sub Connector......................................................779452-01
NI USB-9472
Screw Terminals ........................................................779449-01
D-Sub Connector......................................................779450-01
NI USB-9481 ................................................................779453-01
Accessories
NI 9934 ......................................................................779104-01
BUY NOW!
For complete product specifications, pricing, and accessory
information, call (800) 813 3693 (U.S. only) or go to ni.com/oem.
NI Services and Support
NI has the services and support to meet your
needs around the globe and through the
application life cycle – from planning
and development through deployment
and ongoing maintenance. We offer
services and service levels to meet
customer requirements in research,
design, validation, and manufacturing.
Visit ni.com/services.
Local Sales and Technical Support
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Find immediate answers to your questions at ni.com/support.
We also offer service programs that provide automatic upgrades to
your application development environment and higher levels of
technical support. Visit ni.com/ssp.
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development time, and reduce maintenance costs over the
application life cycle. We schedule instructor-led courses in cities
worldwide, or we can hold a course at your facility. We also offer a
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Visit ni.com/training.
Hardware Services
NI Factory Installation Services
NI Factory Installation Services (FIS) is the fastest and easiest way to
use your PXI or PXI/SCXI combination systems right out of the box.
Trained NI technicians install the software and hardware and
configure the system to your specifications. NI extends the standard
warranty by one year on hardware components (controllers, chassis,
modules) purchased with FIS. To use FIS, simply configure your
system online with ni.com/pxiadvisor.
Professional Services
Our Professional Services Team is comprised of NI applications
engineers, NI Consulting Services, and a worldwide National Instruments
Alliance Partner program of more than 600 independent consultants
and integrators. Services
range from start-up assistance
to turnkey system integration.
Visit ni.com/alliance.
Calibration Services
NI recognizes the need to maintain properly calibrated devices for
high-accuracy measurements. We provide manual calibration
procedures, services to recalibrate your products, and automated
calibration software specifically designed for use by metrology
laboratories. Visit ni.com/calibration.
Repair and Extended Warranty
We offer design-in consulting and product integration assistance
if you want to use our products for OEM applications. For
information about special pricing and services for OEM customers,
visit ni.com/oem.
NI provides complete repair services for our products. Express repair
and advance replacement services are also available. We offer
extended warranties to help you meet project life-cycle requirements.
Visit ni.com/services.
ni.com • (800) 813 3693
National Instruments • [email protected]
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OEM Support