Description
The NI-9421 falls under the C Series Digital I/O category, designed to provide efficient and reliable digital input solutions. This model is identified by multiple part numbers, including 779002-01, 779136-01, 779136-02, and 783734-01, catering to diverse requirements and setups.
It features 8 digital input channels that support sinking inputs, making it versatile for various applications. The NI-9421 is designed to work with 12V and 24V digital I/O logic levels, ensuring compatibility with a broad range of digital signals.
The isolation between channels and earth ground varies depending on the part number, with 250 Vrms isolation for part numbers 779002-01 and 783734-01, and 60 VDC for part numbers 779136-01 and 779136-02. This feature is crucial for protecting the device and ensuring stable operation in electrically noisy environments. Additionally, the 779136-02 model is conformal coated, providing extra protection against harsh conditions.
When it comes to power consumption, the NI-9421 is designed to be energy efficient. It consumes up to 240 mW when active and reduces its consumption to a maximum of 7 mW in sleep mode, highlighting its suitability for applications where power efficiency is a priority.
The unit weighs 5.1 oz, making it light yet robust for industrial applications. It is built to operate within a wide temperature range of -40 °C to 70 °C, and can be stored in temperatures ranging from -40 °C to 85 °C. This wide operating and storage temperature range ensures that the NI-9421 can perform reliably in extreme conditions.
Humidity resilience is another key feature of the NI-9421, with an operating and storage humidity range of 10% RH to 90% RH and 5% RH to 95% RH, respectively,
| Specification | Detail |
|---|---|
| Part Numbers | 779002-01, 779136-01, 779136-02, 783734-01 |
| Category | C Series Digital I/O |
| Model | NI-9421 |
| Channels | 8 digital input channels |
| Input Type | Sinking Inputs |
| Logic Levels | 12V, 24V digital I/O |
| Isolation (Ch-Earth Ground) | 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: Maximum 7 mW |
| Weight | 5.1 oz |
| Operating Temperature | -40 °C to 70 °C |
| Storage Temperature | -40 °C to 85 °C |
| Humidity (Operating/Storage) | 10% RH to 90% RH (Non-condensing) / 5% RH to 95% RH (Non-condensing) |
