Product Insight and Functional Overview
The Yokogawa NFDV161-P50 Digital Input Module is purpose-built for high-density signal acquisition in distributed control systems. Designed to interface directly with field devices such as switches, sensors, and contact signals, this module delivers stable and noise-resistant performance in demanding industrial environments.
With its 64-channel architecture and fast response characteristics, it enables efficient monitoring of multiple input points while maintaining system accuracy and responsiveness. Its compatibility with Yokogawa control platforms ensures seamless integration, making it a reliable component for both new installations and system expansions.
Detailed Technical Specifications
| Parameter | Specification |
|---|
| Model | NFDV161-P50 |
| Module Type | Digital Input Module |
| Input Channels | 64 channels |
| Rated Input Voltage | 24 V DC |
| Input ON Voltage | 18–26.4 V DC |
| Input OFF Voltage | ≤ 5.0 V DC |
| Input Current | 2.5 mA per channel |
| Max Input Voltage | 30 V DC (instantaneous) |
| Input Impedance | Approx. 10 kΩ |
| Data Refresh Cycle | 10 ms |
| Isolation | Optocoupler isolation |
| Withstanding Voltage | 2 kV AC (signal/system), 500 V AC |
| Operating Temperature | -20°C to +60°C |
| Mounting | DIN rail / system rack |
| External Connection | MIL connector / clamp terminal |
| Dimensions (H × W × D) | Approx. 13.0 × 3.5 × 12.0 cm |
| Weight | Approx. 0.3 kg |
Industrial Use Cases
This module is widely deployed in process automation and factory control systems where reliable digital signal acquisition is essential. It is particularly suited for oil & gas facilities, chemical plants, power generation systems, and large-scale manufacturing lines.
Its high channel density allows engineers to reduce cabinet space while increasing monitoring capability. In addition, the fast refresh rate ensures timely detection of state changes, making it ideal for safety interlocks, alarm systems, and sequence control applications.
Performance Highlights and Benefits
The NFDV161-P50 stands out for its ability to combine high channel count with consistent signal integrity. Optocoupler isolation minimizes electrical noise interference, ensuring accurate data transmission even in electrically harsh environments.
Its efficient design reduces wiring complexity and installation time, which translates into lower engineering costs. The module’s durability and stable operation contribute to reduced maintenance requirements and improved system uptime.
Another key advantage is its seamless compatibility with Yokogawa control systems, allowing for straightforward integration and scalable system design.
Technical FAQs
1. How many input points does this module support?
It supports up to 64 digital input channels.
2. What input voltage is required?
The module operates with standard 24 V DC signals.
3. Does it include signal isolation?
Yes, it uses optocoupler isolation for improved reliability.
4. What is the response speed?
The data refresh cycle is approximately 10 ms.
5. Can it handle voltage spikes?
Yes, it tolerates up to 30 V DC instantaneous input.
6. What types of devices can be connected?
Switches, proximity sensors, and dry contact signals are commonly used.
7. Is it suitable for harsh environments?
Yes, it is designed for industrial conditions with wide temperature tolerance.
8. How is wiring connected?
It supports MIL connectors and pressure clamp terminals.
9. Can it be expanded in large systems?
Yes, it is ideal for scalable distributed control systems.
10. What ensures signal accuracy?
Optical isolation and stable input circuitry maintain signal integrity.
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