Description
The NI-9421 falls under the category of C Series Digital I/O modules, designed to provide efficient and reliable digital input functions. This module comes with a variety of part numbers including 779002-01, 779136-01, 779136-02, 783734-01, and 188915D-01, catering to a wide range of applications and requirements.
It is specifically described as the NI 9421 W/25 PIN DSUB, 8-CH 24VDC Sinking Digital Input Module, highlighting its capability to handle 8 digital input channels with sinking inputs. This functionality is essential for applications requiring direct control from 24 VDC signals. The module operates with logic levels of 12V and 24 V digital I/O, ensuring compatibility with a broad spectrum of digital devices.
One of the key features of the NI-9421 is its channel-earth ground isolation. For part numbers 779002-01 and 783734-01, the isolation is rated at 250 Vrms, while for 779136-01 and 779136-02, it is rated at 60 VDC. This isolation capability enhances the module’s reliability and safety in electrically noisy environments. Additionally, the part number 779136-02 is specifically noted for being conformal coated, offering extra protection against harsh environmental conditions.
Regarding power consumption, the NI-9421 is designed to be energy efficient, with an active power consumption of up to 240 mW and a maximum of 7 mW in sleep mode. This feature makes it suitable for applications where power efficiency is crucial. The module’s weight is 5.1 oz, making it lightweight and easy to integrate into various systems.
The operating temperature range of the NI-9421 is quite wide, from -40 °C to 70 °C, ensuring reliable operation in extreme conditions. Similarly, its storage temperature range extends from -40 °C to 85 °C, allowing it to withstand harsh storage environments. Furthermore, the module
| Specification | Details |
|---|---|
| Part Numbers | 779002-01, 779136-01, 779136-02, 783734-01, 188915D-01 |
| Category | C Series Digital I/O |
| Model | NI-9421 |
| Description | NI 9421 W/25 PIN DSUB, 8-CH 24VDC Sinking Digital Input Module |
| Input Channels | 8 digital input channels |
| Input Type | Sinking Inputs |
| Logic Levels | 12V, 24 V 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: 7 mW max |
| Weight | 5.1 oz |
| Operating Temperature | -40 °C to 70 °C |
| Storage Temperature | -40 °C to 85 °C |
| Humidity
Question 1: What are the logic levels supported by NI-9421? Question 2: What is the isolation rating for part number 779002-01? Question 3: What special feature does the 779136-02 have? Question 4: What is the operating temperature range of the NI-9421? Question 5: How many digital input channels does the NI-9421 have? |
