Description
The NI-9421 is a C Series Digital I/O module characterized by its unique specifications designed for versatile applications. The module is available under part numbers 779002-01, 779136-01, 779136-02, and 783734-01. It stands out in the digital I/O category with its spring terminal connectivity and supports a voltage level of 24 V with a quick response time of 100 μs. This module offers 8 digital input channels, which are sinking inputs, making it suitable for various industrial environments.
Operating within logic levels of 12V and 24V digital I/O, the NI-9421 ensures compatibility with a wide range of devices. Channel-Earth Ground Isolation is rated at 250 Vrms for part numbers 779002-01 and 783734-01, and 60 VDC for part numbers 779136-01 and 779136-02, providing reliable protection and operational safety. Notably, the part number 779136-02 is also conformal coated, offering additional protection against harsh environmental conditions.
The power consumption of the NI-9421 is optimized for efficiency, requiring up to 240 mW when active and reducing to up to 7 mW in sleep mode. This module is designed to operate in a wide temperature range from -40 °C to 70 °C, and it can be stored in temperatures ranging from -40 °C to 85 °C. Furthermore, it can handle an operating humidity range of 10% RH to 90% RH and a storage humidity range of 5% RH to 95% RH, ensuring reliable performance in varying environmental conditions.
In terms of durability, the NI-9421 is built to withstand the rigors of industrial environments, including significant vibration during operation. This robust construction, combined with its technical specifications, makes it an ideal choice for a wide array of digital input applications requiring high-speed, reliable data acquisition and control.
| Specification | Detail |
|---|---|
| Part Numbers | 779002-01, 779136-01, 779136-02, 783734-01 |
| Category | C Series Digital I/O |
| Model | NI-9421 |
| Description | Spring Term, 24 V, 100 μs, 8-Ch Sinking DI Module |
| Input Channels | 8 digital input channels, 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: up to 7 mW |
| 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 |
| Vibration | Operating
Question 1: What is the part number for the NI-9421? Question 2: How many DI channels does the NI-9421 have? Question 3: What voltage levels does the NI-9421 support? Question 4: What is the Channel-Earth Ground Isolation for 783734-01? Question 5: What is the power consumption of the NI-9421 in sleep mode? |
