Yokogawa NFDV157-S00 Digital Input Module

The Yokogawa NFDV157-S00 Digital Input Module is a high-performance discrete input module designed for integration with Yokogawa’s NF Series Distributed Control Systems (DCS). This module is engineered to capture and process digital signals from field devices, such as switches, relays, and discrete sensors, converting them into precise logic signals for control system applications.

The NFDV157-S00 provides fast response times, reliable input filtering, and robust signal isolation to ensure accurate detection even in electrically noisy industrial environments. Its compatibility with Yokogawa Autonomous Controller (AC) and NF Series platforms allows seamless integration with analog, digital, and safety I/O modules.

The module’s modular design ensures easy installation and system scalability, making it suitable for critical industrial sectors including power generation, chemical processing, oil & gas, and water treatment. Its advanced protection features reduce maintenance needs and enhance operational reliability.

Product Parameters

Product Applications

The NFDV157-S00 module is widely applied in industrial process control systems:

• Power Generation: Monitoring breaker status, turbine interlocks, and auxiliary device signals.

• Chemical and Petrochemical Facilities: Reading valve positions, limit switches, and safety interlocks.

• Oil & Gas Operations: Detecting field sensor signals, emergency shutdown triggers, and level alarms.

• Water & Wastewater Treatment: Capturing pump status, level switches, and discrete process signals.

• Manufacturing Automation: Real-time feedback from motor status, machinery interlocks, and safety devices.

• Food & Beverage Processing: Integrating discrete signals for batch control, equipment monitoring, and safety systems.

Product Advantages

• Fast Response: Detects input state changes within 10 milliseconds.

• Reliable Isolation: Channel-to-channel and channel-to-system isolation maintain signal integrity.

• Industrial Robustness: Resistant to electromagnetic interference and temperature fluctuations.

• Modular Design: Easy installation in standard racks; scalable for large systems.

• Protection Features: Over-voltage and short-circuit protection enhance durability and safety.

• System Compatibility: Integrates seamlessly with NF Series and AC platforms.

• Real-Time Event Capture: Ideal for critical process monitoring requiring accurate discrete data.

FAQ

1. What types of signals does the NFDV157-S00 accept?

   It accepts discrete digital signals, including dry contact closures and 24 V DC logic signals.

2. How many input channels are available?

   The module provides 16 individual digital input channels.

3. What is the response time of each input channel?

   Each channel responds to input changes within 10 milliseconds, ensuring real-time monitoring.

4. Is the module electrically isolated?

   Yes, it provides both channel-to-channel and channel-to-system isolation to protect against electrical noise.

5. Can it handle rapid signal changes in industrial environments?

   Yes, the 10 ms scanning frequency allows it to reliably detect fast digital events.

6. What is the nominal input voltage required?

   The module operates on a 24 V DC nominal input voltage.

7. Does it have protective features?

   Yes, it includes built-in over-voltage and short-circuit protection for each channel.

8. Is it compatible with all Yokogawa NF Series controllers?

   Yes, it integrates seamlessly with NF Series and Autonomous Controller (AC) platforms.

9. How does the module maintain signal accuracy in noisy environments?

   Its combination of isolation, robust design, and input filtering ensures precise signal detection under electrical interference.

10. Can it be used for critical process monitoring?

    Yes, its fast response time and protection mechanisms make it suitable for monitoring critical digital signals in industrial processes.