Description
The NI-9421 is part of the C Series Digital I/O category, known for its robustness and versatility in handling digital signals. It has several part numbers, including 779002-01, 779136-01, 779136-02, and 783734-01, catering to a variety of needs within its specification range.
This module is specifically designed as an 8-CH 24VDC Sinking Digital Input Module, featuring 8 digital input channels that accommodate sinking inputs. It is capable of handling 12V and 24V digital I/O logic levels, making it highly adaptable for various industrial applications.
One of the key specifications of the NI-9421 is its Channel-Earth Ground Isolation, which stands at 250 Vrms for part numbers 779002-01 and 783734-01, and 60 VDC for part numbers 779136-01 and 779136-02. This feature enhances the module’s safety and reliability by preventing potential electrical interference. Additionally, the module offers a unique advantage with the conformal coating available on the 779136-02 part number, providing extra protection in harsh environments.
When it comes to power, the NI-9421 is efficient, with an active power consumption of up to 240 mW and a sleep mode maximum of 7 mW, ensuring minimal energy usage when not in full operation. It has a weight of 5.1 oz, making it lightweight yet durable for various applications.
Operating conditions for the module are also quite flexible, with an operating temperature range of -40 °C to 70 °C and a storage temperature range of -40 °C to 85 °C. This wide temperature range is complemented by its ability to operate in 10% RH to 90% RH (non-condensing) humidity levels, ensuring reliability and performance stability in a variety of environmental conditions.
| Specification | Details |
|---|---|
| Part Numbers | 779002-01, 779136-01, 779136-02, 783734-01 |
| Category | C Series Digital I/O |
| Model | NI-9421 |
| Description | 8-CH 24VDC Sinking Digital Input Module |
| 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 Coated | Yes (779136-02 only) |
| Power Consumption | Active: up to 240 mW, Sleep mode: max 7 mW |
| 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-cond
Question 1: What voltage does NI-9421 support? Question 2: What’s the isolation for part 779002-01? Question 3: Does 779136-02 have special protection? Question 4: What is the operating temperature range of NI-9421? Question 5: How much power does NI-9421 consume when active? |
