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- Yokogawa
- AAV142-S50
- Analog Input Module
- Japan
- 32.8 × 130 × 107.5 mm
- 0.2 kg
- Xiamen, China
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Product Overview
The Yokogawa AAV142-S50 Analog Input Module is an industrial-grade I/O component designed for Yokogawa CENTUM Distributed Control Systems (DCS). It is used to acquire analog field signals and convert them into digital data for process monitoring and automation control.
This module is engineered for high-density signal acquisition and stable long-term operation in industrial environments. It is commonly deployed in process automation systems where accuracy, reliability, and electrical noise resistance are essential.
The AAV142-S50 is a non-isolated analog voltage input module, optimized for standard industrial measurement signals and continuous operation in control cabinets.
Technical Specifications
| Parameter | Details |
|---|---|
| Manufacturer | Yokogawa |
| Model | AAV142-S50 |
| Product Type | Analog Input Module |
| System Compatibility | CENTUM VP / CENTUM CS 3000 DCS |
| Input Channels | 16 channels (non-isolated) |
| Input Signal Range | -10 V to +10 V DC |
| Input Type | Voltage input |
| Input Resistance | ≥ 1 MΩ |
| A/D Conversion | 16-bit resolution |
| Data Update Period | 10 ms |
| Step Response Time | 100 ms |
| Accuracy | ±20 mV |
| Temperature Drift | ±20 mV / 10°C |
| Power Supply | 5 V DC |
| Power Consumption | Approx. 350 mA |
| Withstand Voltage | 500 V AC (input to system, 1 minute) |
| Isolation | No channel-to-channel isolation |
| Operating Temperature | -20°C to +60°C |
| Dimensions (H × W × D) | 32.8 × 130 × 107.5 mm |
| Weight | 0.2 kg |
| Mounting Type | Rack-mounted / I/O unit installation |
Function and Working Principle
The AAV142-S50 functions as a signal acquisition interface between field instruments and the DCS controller.
Its operation process includes:
- Receiving analog voltage signals from field devices
- Performing internal signal conditioning and filtering
- Converting analog signals into digital data via high-resolution A/D conversion
- Transmitting processed data to the control system for real-time processing
This enables accurate monitoring of process variables such as pressure, temperature, level, and flow when transmitted via voltage-based instrumentation.
Role in Industrial Control Systems
Within Yokogawa DCS architecture, the AAV142-S50 serves as a front-end data acquisition module.
Its key roles include:
- Collecting real-time analog process signals
- Supporting centralized and distributed control strategies
- Providing stable input data for control algorithms
- Ensuring consistent signal conversion for process monitoring
It is essential for maintaining process stability, operational safety, and control precision in industrial automation systems.
Industrial Applications
The Yokogawa AAV142-S50 is widely used in:
- Oil and gas processing plants
- Petrochemical and refinery systems
- Power generation facilities
- Chemical manufacturing plants
- Water treatment and utility systems
- Industrial DCS-based automation environments
It is particularly suitable for continuous process industries requiring stable analog signal monitoring.
Installation and System Integration
Proper installation is critical for stable performance:
- Installed in Yokogawa DCS I/O racks or control cabinets
- Connected via system backplane interface
- Requires correct wiring of analog voltage inputs
- Shielded cables recommended for noise reduction
- Must ensure proper grounding to avoid signal interference
System configuration is typically handled through Yokogawa engineering tools to define channel scaling and signal mapping.
Compatible System Components
The AAV142-S50 is commonly used with:
- Yokogawa CENTUM VP controllers
- Field analog transmitters (voltage output type)
- DCS I/O backplane systems
- Signal conditioning and interface modules
- Process instrumentation devices
Together, these components form a complete distributed process control ecosystem.
Recommended Alternative Models
| Model | Type | Key Feature | Application |
|---|---|---|---|
| Yokogawa AAV142 | Analog Input Module | Standard voltage input version | General DCS applications |
| Yokogawa AAI141 | Analog Input Module | Current input (4–20 mA) | Industrial process control |
| Yokogawa AAV141-S50 | Voltage Input Module | Compact 16-channel design | Space-limited systems |
| Yokogawa AAI143-S50 | Isolated Analog Input Module | Higher electrical isolation | Critical environments |
| Yokogawa ADV151 | Digital Input Module | Digital signal processing | Hybrid automation systems |
Key Advantages
- High-density 16-channel analog input design
- Stable performance in industrial environments
- High-resolution 16-bit signal conversion
- Fast data update cycle (10 ms)
- Compact and lightweight construction
- Strong compatibility with Yokogawa DCS platforms
- Reliable long-term continuous operation
Technical FAQs
Q1: What is the main function of the AAV142-S50?
It converts analog voltage signals into digital data for DCS processing.
Q2: What type of signals does it support?
It supports -10 V to +10 V DC analog voltage inputs.
Q3: Is it isolated between channels?
No, it is a non-isolated analog input module.
Q4: Where is it typically used?
It is used in industrial process control systems such as refineries, chemical plants, and power stations.
Q5: Can it be used in modern DCS systems?
Yes, it is compatible with Yokogawa CENTUM VP series systems.
Conclusion
The Yokogawa AAV142-S50 Analog Input Module is a high-density industrial data acquisition component designed for precise analog voltage measurement in DCS environments. With its stable signal conversion, compact structure, and strong compatibility with Yokogawa CENTUM systems, it plays a critical role in modern industrial automation and process control applications.
It is widely trusted in industries requiring accurate, continuous, and reliable analog signal monitoring.