Description
The C Series Digital I/O module, specifically the NI-9421, comes with various part numbers including 779002-01, 779136-01, 779136-02, and 783734-01, with the 779136-02 also being available as a conformal coated version for additional protection.
This module is a Spring Terminal, 8-CH 24VDC Sinking Digital Input Module, designed to handle 8 digital input channels efficiently. It is compatible with both 12V and 24V digital I/O logic levels, making it versatile for various applications.
When it comes to safety and isolation, the NI-9421 offers 250 Vrms Ch-Earth Ground isolation for part numbers 779002-01 and 783734-01, and 60 VDC Ch-Earth Ground isolation for part numbers 779136-01 and 779136-02, ensuring reliable and secure operation.
Concerning power requirements, the module is quite efficient, with an active power consumption of up to 240 mW and a remarkably low sleep mode consumption of up to 7 mW.
The NI-9421 is built to withstand extreme conditions, operating smoothly in temperatures ranging from -40 °C to 70 °C and can be stored in even colder or warmer conditions, from -40 °C to 85 °C. Its humidity tolerance for both operating and storage conditions is between 10% RH to 90% RH (Non-condensing) and 5% RH to 95% RH (Non-condensing) respectively, ensuring durability in varying environmental conditions.
This module can also endure significant vibration during operation, with capabilities to withstand 5 grms (Random), 5 g (Sinusoidal), across a frequency range of 10 to 500 Hz, highlighting its robustness and reliability in physically demanding situations.
| Specification | Detail |
|---|---|
| Part Numbers | 779002-01, 779136-01, 779136-02, 783734-01, 779136-02 (conformal coated) |
| Category | C Series Digital I/O |
| Model | NI-9421 |
| Type | Spring Terminal, 8-CH 24VDC Sinking Digital Input Module |
| Input Channels | 8 digital input channels |
| Compatibility | 12V, 24 V digital I/O logic levels |
| Isolation | 250 Vrms Ch-Earth Ground (779002-01, 783734-01), 60 VDC Ch-Earth Ground (779136-01, 779136-02) |
| Power Consumption | Active: up to 240 mW, Sleep mode: up to 7 mW |
| Operating Temperature | -40 °C to 70 °C |
| Storage Temperature | -40 °C to 85 °C |
| Humidity (Operating and Storage) | 10% RH to 90% RH (Non-condensing), 5% RH to 95% RH (Non-condensing) |
| Vibration (Operating) | 5 grms (Random), 5 g (Sinusoidal), 10 to 500 Hz |
| Weight | 5.1 oz |
Question 1: What logic levels is the NI-9421 compatible with?
Answer 1: Compatible with 12V and 24V logic levels.
Question 2: What is the operating temperature range of the NI-9421?
Answer 2: -40 °C to 70 °C
Question 3: How many digital input channels does the NI-9421 have?
Answer 3: 8 channels
Question 4: What is the Ch-Earth Ground isolation for part 779002-01?
Answer 4: 250 Vrms
Question 5: What is the active power consumption of the NI-9421?
Answer 5: Up to 240 mW.
