NI PXI-2722 - PXI Programmable Resistor Module

NI PXI-2722 - PXI Programmable Resistor Module

The NI PXI-2722 is a high-density, 64-channel, 1-pole and 2-pole relay module designed to deliver exceptional switching performance and reliability for demanding applications. Engineered with precision and durability in mind, the PXI-2722 stands out within the NI automation products lineup by offering robust input/output capacity, ensuring seamless integration into complex test and measurement systems. Each channel supports up to 60 VDC/42 VAC (rms) and 1 A maximum current per channel, making it suitable for a wide range of signal types including digital, analog, and low-power signals. The module’s high relay count optimizes rack space, reducing overall system footprint and cabling complexity.

Durability is a cornerstone of the PXI-2722 design. The relays used are rated for more than 10 million operations under typical load conditions, providing long-term reliability essential in continuous or repetitive testing environments. Additionally, the module features a built-in fail-safe mechanism that prevents latch-up conditions and ensures signal integrity, even under challenging electrical conditions. Performance-wise, the PXI-2722 boasts impressive switching speeds with minimal crosstalk and low contact resistance, critical for accurate signal routing in sensitive measurements.

In real-world scenarios, the application of PXI-2722 in power industry, petrochemical, and general automation fields is extensive. For example, in power grid monitoring and protection testing, the PXI-2722 enables precise switching and routing of multiple sensor signals and control inputs, facilitating automated testing of protective relays and circuit breakers. In petrochemical plants, the module ensures reliable control and monitoring of critical process instrumentation, supporting high channel density requirements while maintaining signal integrity in harsh industrial environments. Furthermore, its versatility makes it an excellent choice for general automation tasks such as functional testing of complex assemblies, signal multiplexing, and fault simulation.

When compared to other NI relay modules and switching products, the PXI-2722 offers unique advantages. Unlike the NI PXI-2541, which provides lower channel density with fewer relays per module, the PXI-2722’s 64-channel configuration maximizes the number of signals handled per slot, significantly increasing system efficiency. Compared to the NI PXI-2594, which is optimized for higher voltage applications but with fewer channels, the PXI-2722 balances channel count and voltage rating perfectly for medium-power switching tasks. Moreover, modules like the NI PXI-2545 and NI PXI-2549 focus more on matrix switching configurations, whereas the PXI-2722 is ideal for high-density multiplexing and signal routing applications. Its compact size and high relay count make it a preferred choice in space-constrained systems requiring extensive channel counts.

Alongside the NI PXI-2722, the NI automation product ecosystem includes complementary devices such as the NI PXI-6132 for high-speed analog input, the NI PXIe-4492 for dynamic signal acquisition, and the NI PXI-6233 for multifunction data acquisition. For digital I/O needs, the NI USB-6509 and NI PCI-6521 provide versatile solutions, while the NI PXI-2541 and NI PXI-2593 offer additional switching and multiplexing capabilities. The NI cRIO-9042 and NI cRIO-9057 provide rugged real-time controllers for embedded automation, perfectly integrating with the PXI-2722 in hybrid systems. These related models highlight the breadth of the NI portfolio, allowing engineers and system integrators to build customized, scalable solutions for complex automation challenges.

In summary, the NI PXI-2722 is a powerful relay module that excels in high-density signal switching with exceptional durability and performance metrics. Its application of PXI-2722 in power industry, petrochemical, and general automation environments ensures reliable, precise, and efficient control and measurement capabilities. Whether integrated into a standalone test system or part of a larger NI PXI or PXIe platform, the PXI-2722 delivers unmatched value. When paired with other NI automation products like the NI PCI-6704 timing card or the NI PXI-6713 synchronization module, users create cohesive, high-performance test and automation solutions tailored to their exact needs. This makes the PXI-2722 a cornerstone product for professionals seeking reliable, scalable switching in demanding industrial and research settings.