Description
95% RH (non-condensing)
The NI-9421 model falls under the C Series Digital I/O category, designed to cater to various digital input needs. This module is identified by part numbers 779002-01, 779136-01, 779136-02, and 783734-01, offering flexibility in replacement and compatibility options.
It comes equipped with 8 digital input channels, supporting sinking inputs. These channels are capable of handling logic levels of 12V and 24V digital I/O, making the module versatile for different digital signals. Channel-to-earth ground isolation is provided, with values of 250 Vrms for part numbers 779002-01 and 783734-01, and 60 VDC for part numbers 779136-01 and 779136-02, ensuring safe operation and signal integrity.
An important feature of the 779136-02 part number is its conformal coating, enhancing the module’s resistance to environmental factors, thereby increasing its reliability and lifespan in harsh conditions. The NI-9421 is also designed to be energy-efficient, with a power consumption of up to 240 mW when active and as low as 7 mW in sleep mode.
The unit’s physical specifications include a weight of 5.1 oz, making it lightweight yet robust for industrial applications. It operates effectively within a temperature range of -40 °C to 70 °C and can be stored in temperatures ranging from -40 °C to 85 °C. Humidity tolerance is also critical for operational and storage conditions, with the device functioning optimally between 10% RH to 90% RH (non-condensing) and a storage humidity range from 5% RH to 95% RH (non-condensing), ensuring the module’s durability and reliability in varying environmental conditions.
| Specification | Details |
|---|---|
| Part Numbers | 779002-01, 779136-01, 779136-02, 783734-01 |
| Category | C Series Digital I/O |
| Model | NI-9421 |
| 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 | Up to 240 mW (Active), 7 mW (Sleep Mode) |
| 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
Question 1: What is the logic level of NI-9421? Question 2: What is the isolation voltage for 779002-01? Question 3: What special feature does part 779136-02 have? Question 4: What is the power consumption in sleep mode? Question 5: How many input channels does NI-9421 have? |
