CompactRIO
Digital Input and Counter/Timer Modules
NI cRIO-9411, NI cRIO-942x, NI cRIO-9435 NEW!
• High and low-speed ±4 V logic
(IEC 1131-±), differential/
single-ended inputs, or
universal AC/DC inputs
up to ±50 VAC/VDC
• Isolation up to ±,300 Vrms
(withstand), up to ±50 Vrms
(continuous)
• Up to 1 µs input rate for ultrahigh-
speed control or long-distance
digital communication
• Internal current limiting and
industrial logic thresholds for
direct connection to a wide array
of industrial switches, encoders,
and transducers
Product
Logic
Differential or 5 V/TTL
ꢀ4 V
Source/Sink
–
Sink
Sink
Sink/source
Channels
6 DI/SE
8 SE
8 SE
4 DI
I/O Delay Time
500 ns
100 µs
Signal Levels
5 to ꢀ4 V
Isolation
Connector
D-Sub
Screw Terminal, D-Sub
Screw Terminal
Screw Terminal
cRIO-9411
cRIO-94ꢀ1
cRIO-94ꢀ3
cRIO-9435
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ4 V
ꢀ4 V
ꢀ4 V
Universal
1 µs
3 ms
5 to ꢀ50 VDꢁ, 10 to ꢀ50 VAꢁ
Overview
digital communication. For instance, a CompactRIO system can
High-performance digital input modules for National Instruments implement a circuit to detect digital events and record a timestamp,
CompactRIO embedded systems and R Series expansion chassis implement high-reliability digital control logic in silicon, or perform
provide industrial logic levels for direct connection to a wide array redundant safety enforcement and interlocks. Unlike traditional
of industrial switches and transducers. Each module features an digital control devices, the performance of a CompactRIO digital
integrated connector junction box with screw terminal control system does not decrease as the amount of digital logic
or cable options for flexible and low cost signal wiring. All modules increases because of the parallel nature of the RIO FPGA circuitry.
feature the NI CompactRIO Extreme Industrial Certifications
and Ratings.
Key Features
• High-performance digital and counter/timer input modules for
any CompactRIO embedded system or R Series expansion chassis
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Advanced Features
Advanced features include internal current limiting and industrial • Screw terminals, D-Sub, strain relief, high-voltage cable,
logic thresholds for direct connection to a wide array of industrial
solder cup backshell, and other connectivity options
devices such as proximity switches, emergency stop buttons, level • NI CompactRIO Extreme Industrial Certifications and Ratings1
switches, pressure probes, and magnetic pickups. The NI cRIO-9411 • cRIO-9411 module generates regulated 5 V power for quadrature
module, ideal for quadrature position encoders, features 5 V/TTL
encoder or other devices
logic levels with differential inputs up to ±±4 V or single-ended • Channel-to-earth ground double-isolation barrier for safety
inputs. The cRIO-9411 also accepts 6 to 30 V power and generates
a regulated 5 V output for powering quadrature encoders. The
and noise immunity
Visit ni.com/compactrio for up-to-date information on module
cRIO-9435 is a universal digital input module that accepts AC and availability, example programs, application notes, and other
DC as well as both sinking and sourcing signals up to ±50 VAC/VDC. developer tools.
NI CompactRIO digital input modules connect directly to RIO
FPGA hardware to create high-performance embedded systems that For ordering information, see page 381.
deliver the optimization and flexibility of a custom electrical circuit
completely dedicated to your I/O application. The RIO FPGA
hardware provides unlimited options for timing, triggering,
synchronization, change detection, digital pattern matching, or
North American
Hazardous Locations
(pending)
For more information, see page 379.
1See CompactRIO Overview on page 366 for details.
BUY ONLINE or CALL (866) 265-9891! Visit ni.com
377