Description
The NI-9421 falls under the category of C Series Digital I/O modules and is designed for versatile applications requiring digital input. It comes with various Part Numbers including 779002-01, 779136-01, 779136-02, and 783734-01, making it adaptable for a range of configurations.
Its primary feature is the Spring Terminal, 24 V, 100 µs, 8-Ch Sinking DI Module, designed to offer reliable and rapid digital input operations. The module boasts 8 digital input channels with Sinking Inputs, catering to the needs of applications requiring high-density digital input.
The Logic Levels supported by the NI-9421 are 12V and 24V digital I/O, providing flexibility in connecting different types of digital signals. Additionally, the module offers varying levels of Isolation between channels and earth ground, with 250 Vrms for part numbers 779002-01 and 783734-01, and 60 VDC for part numbers 779136-01 and 779136-02, ensuring safe operation across different electrical environments.
One of the unique features of the NI-9421 is the availability of a Conformal Coating on the 779136-02 model, enhancing its durability and resistance to harsh conditions. In terms of power efficiency, the module operates with a consumption of Up to 240 mW in active mode and as low as 7 mW in sleep mode, highlighting its energy-saving capabilities.
With a weight of just 5.1 oz, the NI-9421 is a lightweight module designed for easy integration into various systems. It operates within a wide temperature range of -40 °C to 70 °C and can be stored in temperatures ranging from -40 °C to 85 °C. Moreover, it is built to withstand operating humidity from 10% RH to 90% RH, non-condensing, ensuring reliable performance in diverse environmental conditions.
| Specification | Detail |
|---|---|
| Part Numbers | 779002-01, 779136-01, 779136-02, 783734-01 |
| Category | C Series Digital I/O |
| Model | NI-9421 |
| Description | Spring Terminal, 24 V, 100 µs, 8-Ch Sinking DI Module |
| Input Channels | 8 digital input channels with Sinking Inputs |
| Logic Levels | 12V, 24 V digital I/O |
| Isolation | 250 Vrms Ch-Earth Ground (779002-01, 783734-01), 60 VDC Ch-Earth Ground (779136-01, 779136-02) |
| Conformal Coating | Yes (779136-02 only) |
| Power Consumption | Up to 240 mW (active), 7 mW (sleep mode) |
| Weight | 5.1 oz |
| Operating Temperature | -40 °C to 70 °C |
| Storage Temperature | -40 °C to 85 °C |
| Operating Humidity | 10% RH to 90% RH, non-condensing |
