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- Yokogawa
- NFA1543-S50/A4S00
- Analog Input Module
- Japan
- 130 x 107.5 x 32.8 mm
- 0.3 kg
- Xiamen, China
- New & In Stock
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All our products are priced very favorably because we have our own warehouse and supply.
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Product Overview
The Yokogawa NFA1543-S50/A4S00 is an isolated analog input module designed for Yokogawa STARDOM FCN/FCJ control systems. It acquires analog process signals from field instruments, converts them into digital data, and transfers the information to the controller for monitoring and process control.
Featuring 16 individually isolated input channels, the module provides excellent noise immunity, measurement accuracy, and reliable operation in demanding industrial environments.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Yokogawa |
| Model | NFA1543-S50/A4S00 |
| Product Type | Isolated Analog Input Module |
| Number of Input Channels | 16 |
| Input Signal | 4–20 mA DC |
| Input Resistance | Approximately 250 Ω |
| Resolution | 16-bit |
| Accuracy | ±0.1% of Full Scale |
| Channel Isolation | Channel-to-channel and channel-to-system isolation |
| Power Supply | 24 V DC |
| Compatible System | Yokogawa STARDOM FCN/FCJ |
| Mounting | Controller base unit |
| Dimensions | 130 × 107.5 × 32.8 mm |
| Weight | 0.3 kg |
Function and Working Principle
The NFA1543-S50/A4S00 receives standard 4–20 mA analog signals from field devices such as pressure, temperature, flow, and level transmitters.
Each input channel is electrically isolated to reduce interference and improve measurement reliability. The incoming analog signals are converted into high-resolution digital values through an internal analog-to-digital converter (ADC), allowing the controller to process accurate real-time process data.
Operating Sequence
- Field transmitter outputs a 4–20 mA signal.
- The analog input module receives the signal.
- Each channel performs isolated signal acquisition.
- The ADC converts the analog signal into digital data.
- The controller processes the measurement for monitoring, alarms, and control.
Key Features
- 16 individually isolated analog input channels
- Supports standard 4–20 mA process signals
- High-resolution 16-bit analog-to-digital conversion
- Excellent electrical isolation and noise immunity
- High measurement accuracy
- Reliable operation in industrial environments
- Compact and modular design
System Role
The module serves as the analog signal acquisition interface between field instruments and the Yokogawa controller.
Typical System Architecture
Pressure / Temperature / Flow Transmitter → NFA1543-S50/A4S00 → STARDOM Controller → HMI / DCS → Process Control
Industrial Applications
The NFA1543-S50/A4S00 is suitable for:
- Distributed Control Systems (DCS)
- STARDOM automation systems
- Oil and gas production
- Chemical processing plants
- Power generation facilities
- Water and wastewater treatment
- Pharmaceutical manufacturing
- General industrial process automation
Installation Guidelines
- Install the module in a compatible Yokogawa controller base unit.
- Verify the 24 V DC power supply before commissioning.
- Connect field transmitters using the designated input terminals.
- Keep signal wiring separate from power cables to minimize electrical noise.
- Ensure proper grounding of the control system.
- Verify channel configuration during system startup.
Compatible Components
The NFA1543-S50/A4S00 is compatible with:
- Yokogawa STARDOM FCN controllers
- Yokogawa STARDOM FCJ controllers
- Pressure transmitters
- Temperature transmitters
- Flow transmitters
- Level transmitters
- Yokogawa controller base units
Alternative Models
| Model | Description |
|---|---|
| NFAI141-S01 | Non-Isolated Analog Input Module |
| AAI143 | Analog Input Module |
| AAI143-H | High-performance Analog Input Module |
| AAI835 | Analog I/O Module |
| ADV151 | Digital Input Module |
Advantages
- High-precision analog signal acquisition
- Individual channel isolation for improved reliability
- Excellent resistance to electromagnetic interference
- Stable long-term industrial performance
- Compact, modular construction
- Easy integration with Yokogawa STARDOM systems
Frequently Asked Questions
What is the NFA1543-S50/A4S00 used for?
It is used to acquire 4–20 mA analog signals from field instruments and transmit digital process data to Yokogawa STARDOM controllers.
How many input channels does it provide?
The module provides 16 individually isolated analog input channels.
What input signal does it support?
It supports the industry-standard 4–20 mA DC analog current input.
Why is channel isolation important?
Channel isolation minimizes electrical interference, improves measurement accuracy, and protects the controller from field-side disturbances.
Which systems is it compatible with?
It is designed for integration with Yokogawa STARDOM FCN and FCJ control systems.
Conclusion
The Yokogawa NFA1543-S50/A4S00 Analog Input Module is a high-performance 16-channel isolated analog input module engineered for accurate and reliable acquisition of 4–20 mA process signals. Its high-resolution conversion, channel isolation, and robust industrial design make it an excellent choice for demanding process automation and control applications.