Introduction
The Yokogawa NFAI141-S01 Analog Input Module is a high-density, non-isolated industrial I/O module designed for reliable analog signal acquisition in Yokogawa STARDOM FCN/FCJ control systems. It is engineered to convert field-level analog signals into precise digital data, ensuring stable and accurate process monitoring in demanding automation environments.
This module is widely used in process industries where consistent measurement accuracy, fast data refresh, and system reliability are critical. Its compact architecture and proven industrial design make it a strong choice for long-term deployment in distributed control and monitoring systems.
Technical Specifications
| Parameter | Specification |
|---|
| Model | NFAI141-S01 |
| Manufacturer | Yokogawa |
| Type | Analog Input Module |
| System Platform | STARDOM FCN / FCJ |
| Input Channels | 16 channels (non-isolated, differential) |
| Input Signal | 4–20 mA DC / 1–5 V / 0–10 V (system dependent) |
| Accuracy | ±0.1% of full scale |
| Resolution | 16-bit high precision |
| Data Refresh Cycle | 10 ms |
| Step Response Time | 100 ms |
| Input Resistance | 250 Ω (power ON) |
| Overcurrent Protection | 27 mA max |
| Transmitter Supply | 22.8–26.4 V DC |
| Operating Temperature | -20°C to +70°C |
| Storage Temperature | -40°C to +85°C |
| Power Consumption | ~3–5 W (system dependent) |
| Dimensions | ~130 × 107.5 × 32.8 mm |
| Weight | ~0.2–0.44 kg |
Applications
The NFAI141-S01 is designed for industrial environments requiring accurate and continuous analog signal acquisition.
Common applications include:
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Oil and gas production monitoring systems
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Petrochemical and refinery process control
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Power generation and turbine performance monitoring
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Water treatment and environmental control systems
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Factory automation and production line data acquisition
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SCADA and DCS integration systems
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Equipment condition monitoring and diagnostics
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Utility and infrastructure automation networks
Its flexibility allows integration with a wide range of industrial transmitters and sensors.
Advantages
The Yokogawa NFAI141-S01 provides strong operational and engineering value:
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High-precision 16-bit conversion for accurate process data
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Fast 10 ms refresh cycle enabling near real-time control
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16-channel high-density design reduces system footprint
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Industrial-grade stability for continuous 24/7 operation
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Low drift performance ensures long-term measurement consistency
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Flexible signal support (current and voltage inputs)
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Seamless integration with STARDOM FCN systems
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Reliable diagnostics for maintenance efficiency
Technical FAQs
1. What is the main function of NFAI141-S01?
It converts analog field signals into digital data for control systems.
2. How many input channels does it have?
It supports 16 analog input channels.
3. What signal types are supported?
4–20 mA current and 1–5 V / 0–10 V voltage signals.
4. Is the module isolated?
No, it is a non-isolated differential input module.
5. What is the accuracy level?
Approximately ±0.1% of full scale.
6. What is the response time?
Around 100 ms step response time.
7. What system is it used with?
Yokogawa STARDOM FCN/FCJ control platforms.
8. What is the weight?
Approximately 0.2–0.44 kg depending on configuration.
9. Can it operate in harsh environments?
Yes, it is designed for industrial temperature and electrical conditions.
10. Does it support maintenance diagnostics?
Yes, it includes built-in diagnostic functions for system health monitoring.
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