Description
The NI-9421 model falls under the C Series Digital I/O category and comes with a variety of part numbers including 779002-01, 779136-01, 779136-02, and 783734-01. This model is designed to cater to various digital input needs with its 8 digital input channels that are capable of handling sinking inputs. It is versatile in accommodating different logic levels, specifically 12V and 24V digital I/O, ensuring broad applicability across various digital systems.
One of the notable features of the NI-9421 is its channel-earth ground isolation, which is rated at 250 Vrms for part numbers 779002-01 and 783734-01, and 60 VDC for part numbers 779136-01 and 779136-02. This feature significantly enhances the safety and reliability of the module by isolating the input channels from earth ground. Additionally, the model with part number 779136-02 exclusively offers a conformal coating, providing extra protection against environmental factors, thereby extending the module’s durability and lifespan.
When it comes to power consumption, the NI-9421 is designed to be energy-efficient, with an active power consumption of up to 240 mW, and a remarkably low sleep mode power consumption of up to 7 mW. This makes it an ideal choice for applications where power efficiency is a critical factor.
The module accommodates various connectivity options through its screw terminals (779002-01), D-Sub connectors (779136-01, 779136-02), and spring terminal (783734-01), offering flexibility in connection types to suit different installation and application requirements. With a weight of 5.1 oz, it is relatively lightweight, making it easy to handle and install.
Furthermore, the NI-9421 is built to withstand harsh conditions, operating within a temperature range of -40 °C to 70 °C and having a storage temperature range of -40 °C to 85 °C. This robust
| Specification | Detail |
|---|---|
| Part Numbers | 779002-01, 779136-01, 779136-02, 783734-01 |
| Category | C Series Digital I/O |
| Model | NI-9421 |
| Input Channels | 8 digital input channels |
| Input Type | Sinking Inputs |
| Logic Levels | 12V, 24V digital I/O |
| Channel-Earth Ground Isolation | 250 Vrms (779002-01, 783734-01), 60 VDC (779136-01, 779136-02) |
| Conformal Coating | Yes (779136-02 only) |
| Power Consumption | Active: up to 240 mW, Sleep Mode: up to 7 mW |
| Connectors | Screw Terminals (779002-01), D-Sub (779136-01, 779136-02), Spring Terminal (783734-01) |
| Weight | 5.1 oz |
| Operating Temperature Range | -40 °C to 70 °C |
| Storage Temperature Range | -40 °C to 85 °C |
