Introduction
The Yokogawa NFDV161-P00 S2 Digital Input Module is a high-density discrete signal acquisition module designed for ProSafe-RS safety systems and advanced industrial control platforms. It is engineered to reliably capture ON/OFF signals from field devices such as switches, sensors, and push buttons, ensuring accurate status monitoring in critical process environments.
With its S2 hardware revision, this module offers enhanced long-term reliability, improved component stability, and optimized lifecycle support. Its high channel density and fast response make it particularly suitable for large-scale automation systems where signal integrity and system safety are essential.
Technical Specifications
| Parameter | Specification |
|---|
| Model | NFDV161-P00 S2 |
| Manufacturer | Yokogawa |
| Type | Digital Input Module |
| Input Channels | 16 or 64 channels (configuration dependent) |
| Input Signal Type | 24 V DC ON/OFF signals |
| Input Voltage Range | 18–26.4 V DC |
| Input ON Voltage | 20–26.4 V DC |
| Input OFF Voltage | ≤ 5 V DC |
| Input Current | 2.5–4 mA per channel |
| Response Time | ≤ 8–10 ms |
| Isolation | Optical / electrical isolation between channels and system |
| Withstand Voltage | Up to 2000 V AC (input to system) |
| Functions | Status input, push-button input, edge detection |
| Data Refresh Cycle | Approx. 10 ms |
| Power Consumption | Up to ~550 mA (5 V DC) |
| Operating Temperature | -20°C to +70°C |
| Dimensions | Approx. 100 × 50 × 30 mm (variant dependent) |
| Weight | Approx. 0.2–0.3 kg |
| Mounting Type | Rack-mounted (SIS/DCS base unit) |
Applications
The NFDV161-P00 S2 is designed for industrial environments requiring reliable digital signal acquisition, especially in safety-critical systems.
Typical applications include:
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Emergency Shutdown Systems (ESD)
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Fire & Gas Detection Systems (F&G)
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Burner Management Systems (BMS)
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Oil & gas production and refining plants
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Power generation safety monitoring
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Industrial interlock and protection systems
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SCADA and DCS signal acquisition networks
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Equipment status and alarm monitoring systems
Its high channel density makes it ideal for large-scale signal integration.
Advantages
The Yokogawa NFDV161-P00 S2 delivers strong performance and operational value:
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High-density channel design reduces system hardware requirements
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Fast ≤10 ms response time ensures real-time signal detection
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Reliable 24 V DC compatibility for industrial field devices
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Enhanced S2 hardware revision improves durability and lifecycle stability
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Optical isolation design protects against electrical noise
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Integrated diagnostics improves system visibility and maintenance
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Supports push-button and edge detection functions
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Seamless integration with Yokogawa ProSafe-RS systems
Technical FAQs
1. What is the main function of the NFDV161-P00 S2?
It captures and processes digital ON/OFF signals from field devices.
2. How many channels does it support?
Depending on configuration, it supports 16 or up to 64 channels.
3. What signal type is supported?
24 V DC digital signals from switches, sensors, and relays.
4. What is the response time?
Typically 8–10 ms.
5. Does it support isolation?
Yes, it includes electrical/optical isolation for signal protection.
6. What is the input current per channel?
Approximately 2.5–4 mA depending on configuration.
7. What is the operating temperature range?
-20°C to +70°C.
8. What is the weight of the module?
Around 0.2–0.3 kg.
9. What does “S2” indicate?
It represents an updated hardware revision with improved reliability and lifecycle performance.
10. What systems is it compatible with?
Yokogawa ProSafe-RS and related DCS/SIS platforms.
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