



Product Introduction
The Yokogawa NFDV557-S00 S2 Digital Output Module is a high-density industrial control component designed to deliver reliable and precise ON/OFF switching signals in distributed automation systems. As part of Yokogawa’s STARDOM/FCN ecosystem, it provides stable transistor-based outputs for controlling field devices such as solenoid valves, relays, alarms, and indicator systems.
Built for demanding industrial environments, this module emphasizes fast response, electrical isolation, and long-term operational stability, making it a dependable choice for process-critical applications.
Technical Specifications
| Parameter | Specification |
|---|
| Model | NFDV557-S00 S2 |
| Module Type | Digital Output Module |
| Output Channels | 32 channels |
| Output Type | Transistor (sink type, 24 V DC) |
| Rated Output Voltage | 24 V DC |
| Output Current | Up to 0.5 A per channel |
| Load Voltage Range | 20.4 – 26.4 V DC |
| Leakage Current (OFF) | ≤ 0.1 mA |
| Response Time | ≤ 3 ms |
| Isolation | Optical isolation between channels and system |
| Protection Features | Overcurrent & surge protection |
| Power Consumption | < 10 W |
| Operating Temperature | -10°C to +60°C |
| Dimensions (H×W×D) | 157 × 45 × 243 mm |
| Weight | Approx. 0.42 kg |
| Terminal Type | Pressure clamp terminal |
| Compatibility | Yokogawa STARDOM / FCN systems |
Industrial Applications
This module is widely used in automation systems requiring fast, reliable, and repeatable output control signals:
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Oil & gas processing facilities
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Petrochemical and refining plants
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Power generation and turbine systems
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Manufacturing automation lines
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Safety alarm and interlock systems
Its high channel density and fast switching performance make it suitable for large-scale distributed control architectures.
Technical FAQs
1. What is the main function of this module?
It provides digital ON/OFF output signals to control field devices.
2. How many output channels are available?
It supports 32 independent digital output channels.
3. What is the output type?
It uses transistor-based sink outputs at 24 V DC.
4. What is the switching speed?
Typical response time is around 3 milliseconds.
5. Can it handle continuous operation?
Yes, it is designed for 24/7 industrial use.
6. What protection features are included?
Overcurrent and surge protection are built in.
7. What does the S2 suffix indicate?
It represents a specific configuration variant within the NFDV557 series.
8. Is it suitable for noisy industrial environments?
Yes, optical isolation improves noise immunity.
9. What systems is it compatible with?
It integrates with Yokogawa STARDOM and FCN/FCN-RTU systems.
10. Why is it used in large plants?
Because it combines high density, fast switching, and stable industrial-grade reliability.