Description
The devices come with a variety of Part Numbers including 779002-01, 779136-01, 779136-02, and 783734-01, ensuring flexibility for different project requirements. They fall under the Category of C Series Digital Module, designed to cater to specific digital input needs.
These modules are equipped with 8 digital input channels, providing ample connectivity for various digital signals. The Input Type is sinking, which is suitable for common ground configurations, making these modules versatile in application. They support Compatible Logic Levels of 12V and 24V digital I/O, ensuring compatibility with a wide range of digital logic levels encountered in industrial environments.
The Channel-Earth Ground Isolation feature offers protection against electrical noise, with specifications of 250 Vrms for part numbers 779002-01 and 783734-01, and 60 VDC for part numbers 779136-01 and 779136-02, enhancing the reliability and integrity of data.
Part number 779136-02 is Conformal Coated, providing additional protection against harsh environments, making it an ideal choice for applications requiring enhanced durability.
Regarding power efficiency, these modules exhibit an Active Power Consumption of up to 240 mW and can go as low as up to 7 mW in Sleep Mode, ensuring energy efficiency in prolonged operations. They are lightweight, with a Weight of 5.1 oz, making them easy to integrate into various systems without adding significant bulk.
The modules can operate within a Temperature Range of -40 °C to 70 °C and can be stored in temperatures ranging from -40 °C to 85 °C, ensuring reliable performance across a wide range of environmental conditions. The Operating Humidity Range is from 10% RH to 90% RH (non-condensing), and the Storage Humidity Range is from 5% RH to 95% RH (non-condensing), guaranteeing stability in various humidity conditions.
Finally,
| Specification | Detail |
|---|---|
| Part Numbers | 779002-01, 779136-01, 779136-02, 783734-01 |
| Category | C Series Digital Module |
| Channels | 8 digital input channels |
| Input Type | Sinking |
| Compatible 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 |
| 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 Vibration | Random: 5 grms, Sinusoidal: 5 g (10 to 500 Hz) |
Question 1: How many input channels does the NI-9421 have?
Answer 1: It has 8 sinking input channels.
Question 2: What are the compatible logic levels for the NI-9421?
Answer 2: Supports 12V and 24V logic levels.
Question 3: Is the NI-9421 model isolated?
Answer 3: Yes, it offers channel-earth ground isolation.
Question 4: What’s the power consumption in sleep mode?
Answer 4: Up to 7 mW in sleep mode.
Question 5: Does the NI-9421 work in harsh environments?
Answer 5: Part 779136-02 is conformal coated for harsh environments.


