Description
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The NI-9421 falls under the category of C Series Digital I/O and is identified by part numbers 779002-01, 779136-01, 779136-02, 783734-01. This model is specially designed with a conformal coating, with the coating being specific to part number 779136-02 only. The NI 9421 is designed for environments requiring robust digital input solutions, featuring 8 digital input channels that are sinking inputs.
It supports 12V and 24V digital I/O logic levels, making it versatile for various industrial applications. Additionally, each channel is equipped with an LED indicator to provide immediate visual feedback on the status of each input. The NI-9421 offers different levels of isolation; part numbers 779002-01 and 783734-01 provide 250 Vrms channel-to-earth ground isolation, whereas part numbers 779136-01 and 779136-02 offer 60 VDC channel-to-earth ground isolation.
When it comes to power consumption, the device is efficient, requiring up to 240 mW when active and a maximum of 7 mW in sleep mode. It has a weight of 5.1 oz and is built to operate in challenging conditions, with an operating temperature range of -40 °C to 70 °C and a storage temperature range of -40 °C to 85 °C. The humidity range for operation is 10% RH to 90% RH, non-condensing, and for storage, it is 5% RH to 95% RH, non-condensing.
The NI-9421 is also designed to withstand operating vibrations, with a random grms of 5 and capable of handling sinusoidal vibrations, ensuring reliable performance in industrial environments where mechanical vibrations are common.
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| Specification | Detail |
|---|---|
| Part Numbers | 779002-01, 779136-01, 779136-02, 783734-01 |
| Category | C Series Digital I/O |
| Model | NI-9421 |
| Description | NI 9421 Conformal Coated |
| Input Channels | 8 digital input channels |
| Input Type | Sinking Inputs |
| Logic Levels | 12V, 24V digital I/O |
| Channel Indicator | LED for each channel |
| Isolation (779002-01, 783734-01) | 250 Vrms Ch-Earth Ground Isolation |
| Isolation (779136-01, 779136-02) | 60 VDC Ch-Earth Ground Isolation |
| Conformal Coating | Part number 779136-02 only |
| Power Consumption (Active) | Up to 240 mW |
| Power Consumption (Sleep Mode) | Maximum 7 mW |
| Weight | 5.1 oz |
| Operating Temperature Range | -40 °C to 70 °C |
| Storage Temperature Range | -40 °C to 85 °C |
| Operating Humidity Range | 10% RH to 90% RH, non-condensing |
| Storage Humidity Range | 5% RH to 95% RH, non-condensing |
| Operating Vibrations | Random: 5 grms, Sinusoidal:
Question 1: What is the specific conformal coating part number for NI-9421? Question 2: How many digital input channels does the NI-9421 have? Question 3: What are the operating temperature limits of the NI-9421? Question 4: What type of isolation do part numbers 779002-01 and 783734-01 offer? Question 5: What power consumption does the NI-9421 have in sleep mode? |
