Description
The NI-9421 falls under the category of C Series Digital I/O modules and is designed to accommodate various applications with its digital input capabilities. This model is identified by several part numbers, including 779002-01, 779136-01, 779136-02, and 783734-01, catering to a wide range of requirements and specifications.
Featuring 8 digital input channels, the NI-9421 is capable of handling multiple inputs simultaneously. These inputs are of the sinking type, ensuring compatibility with a variety of digital signals. The module supports 12V and 24V logic levels, providing flexibility in integrating with different logic systems.
One of the key features of the NI-9421 is its channel-to-earth ground isolation. For part numbers 779002-01 and 783734-01, the isolation is rated at 250 Vrms, while for part numbers 779136-01 and 779136-02, it is rated at 60 VDC. This isolation enhances the module’s safety and reliability in various industrial environments.
The 779136-02 variant is uniquely equipped with a conformal coating, offering additional protection against harsh conditions and ensuring the longevity of the module. Power consumption is efficiently managed with up to 240 mW during active use and as low as 7 mW in sleep mode, emphasizing the module’s energy efficiency.
With a weight of 5.1 oz, the NI-9421 is a lightweight yet robust module designed for easy integration into various setups. It operates within a temperature range of -40 °C to 70 °C and can be stored in temperatures ranging from -40 °C to 85 °C. The device maintains its performance in conditions with humidity levels from 10% RH to 90% RH during operation and 5% RH to 95% RH during storage, ensuring reliability in non-condensing environments.
| Specification | Details |
|---|---|
| Part Numbers | 779002-01, 779136-01, 779136-02, 783734-01 |
| Category | C Series Digital I/O |
| Model | NI-9421 |
| Digital Input Channels | 8 |
| Input Type | Sinking Inputs |
| Logic Levels | 12V, 24V |
| Channel-to-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 |
| Weight | 5.1 oz |
| Operating Temperature Range | -40 °C to 70 °C |
| Storage Temperature Range | -40 °C to 85 °C |
| Operating and Storage Humidity Range | Operating: 10% RH to 90% RH, Storage: 5% RH to 95% RH (non-condensing) |
| Vibration
Question 1: What logic levels does the NI-9421 support? Question 2: How many digital input channels does NI-9421 have? Question 3: What is the isolation rating for 779002-01 and 783734-01? Question 4: What unique feature does part number 779136-02 have? Question 5: What is the power consumption in sleep mode? |
