Introduction: The NI 9421 is a versatile real-time embedded I/O module designed for NI CompactRIO systems. It integrates a robust mix of digital and analog I/O channels, offering high-precision measurement and control in industrial automation, process control, and data acquisition applications.
Key Features & Specifications
Feature
Specification
Digital Channels
16 Channels (8 digital inputs / 8 digital outputs)
Analog Channels
8 Channels (configurable as 4 analog inputs / 4 analog outputs)
Resolution (Analog)
16-bit
Sampling Rate
Up to 100 kS/s per channel (analog, shared among channels)
Communication Interfaces
Ethernet, USB, and support for various industrial protocols
Operating Temperature
0°C to 50°C
Driver Support
NI-DAQmx Compatible (Windows & Linux)
Why It Matters
Versatile I/O Integration: Combines both digital and analog channels in a single module to meet a wide range of application needs.
High-Precision Performance: 16-bit resolution and high-speed sampling ensure accurate data acquisition and reliable control in dynamic environments.
Scalable and Modular: Designed for NI CompactRIO systems, the NI 9421 supports flexible I/O expansion and can be integrated into complex control systems.
Robust Industrial Design: Engineered to operate in harsh industrial environments, ensuring continuous performance under demanding conditions.
Alternative Models from Other Manufacturers
Feature
NI 9421
Model X-I/O
Model Y-Embedded
Model Z-Control
Digital Channels
16 (8 In / 8 Out)
16
12
16
Analog Channels
8 (4 In / 4 Out)
8
8
8
Resolution (Analog)
16-bit
16-bit
14-bit
16-bit
Sampling Rate
Up to 100 kS/s
80 kS/s
100 kS/s
90 kS/s
Customer Testimonials
“The NI 9421 has significantly streamlined our data acquisition and control systems. Its combination of digital and analog I/O has provided us with the flexibility we need for our industrial automation projects.” – Automation Engineer
“Integrating the NI 9421 into our CompactRIO system was straightforward. Its robust performance in a harsh industrial environment has exceeded our expectations.” – Process Control Specialist
User Manual & Documentation
For detailed installation instructions, configuration options, and troubleshooting guidelines, please refer to the official NI 9421 User Manual.
Conclusion & Final Recommendation
The NI 9421 Real-Time Embedded I/O Module offers a robust, flexible, and high-precision solution for integrating digital and analog signals in NI CompactRIO systems. Its comprehensive I/O capabilities and industrial-grade design make it an excellent choice for a wide range of applications, from process control to industrial automation.
Order the NI 9421 today to elevate your data acquisition and control systems with a versatile, high-performance I/O module!
