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- Yokogawa
- AAV144-S00/A4S10
- Voltage Input Module (Isolated)
- Japan
- 107.5 × 130 × 32.8 mm
- 0.2 kg
- Xiamen, China
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Product Overview
The Yokogawa AAV144-S00 / A4S10 Voltage Input Module is an isolated 16-channel analog voltage input module designed for Yokogawa CENTUM Distributed Control Systems (DCS). It is used to acquire voltage signals from field instruments and convert them into digital data for real-time process monitoring and control.
This model is engineered for high electrical isolation, strong noise immunity, and long-term industrial stability, making it suitable for critical process environments such as oil & gas, petrochemical plants, and power generation systems.
Compared with non-isolated versions, the A4S10 configuration provides enhanced surge protection and improved signal integrity in harsh electrical conditions.
Technical Specifications
| Parameter | Details |
|---|---|
| Manufacturer | Yokogawa |
| Model | AAV144-S00 / A4S10 |
| Product Type | Isolated Voltage Input Module |
| System Compatibility | CENTUM VP / CENTUM CS 3000 |
| Input Channels | 16 channels (isolated) |
| Input Signal Range | 1–5 V DC / -10 to +10 V DC |
| Allowable Input Voltage | ±30 V DC |
| Input Resistance | 1 MΩ (power ON), 200 kΩ (power OFF) |
| Isolation Voltage | 1500 V AC (input to system, 1 minute) |
| A/D Conversion Resolution | 16-bit |
| Data Update Period | 10 ms |
| Accuracy | ±4 mV typical / ±20 mV maximum |
| Temperature Drift | ±4 mV / 10°C |
| Power Supply | 5 V DC (via backplane) |
| Current Consumption | Max 500 mA |
| Power Dissipation | Approx. 5.5 W |
| Protection Feature | Surge absorber (A4S10 terminal variant) |
| Mounting Type | Rack-mounted I/O module |
| Dimensions (H × W × D) | 107.5 × 130 × 32.8 mm |
| Weight | 0.2 kg |
Function and Working Principle
The AAV144-S00 / A4S10 functions as an isolated analog signal acquisition interface between field devices and the DCS system.
Its operation process includes:
- Receiving analog voltage signals from field transmitters or sensors
- Applying electrical isolation to separate field and system circuits
- Filtering and conditioning incoming signals to remove noise
- Converting analog voltage into high-resolution digital data
- Sending processed data to the DCS controller for real-time control
The integrated surge protection (A4S10 terminal design) helps protect the module from voltage spikes and transient disturbances common in industrial power environments.
Role in Industrial Control Systems
Within Yokogawa DCS architecture, this module serves as a front-end isolated signal interface unit.
It is responsible for:
- Safe acquisition of voltage-based process signals
- Electrical isolation between field instruments and control system
- Stable real-time data acquisition for process control loops
- Protection of control systems from electrical noise and surges
It plays a key role in maintaining system reliability, measurement accuracy, and operational safety.
Industrial Applications
The AAV144-S00 / A4S10 is widely used in:
- Oil and gas production and refining systems
- Petrochemical processing plants
- Power generation and turbine control systems
- Chemical manufacturing facilities
- Water treatment and utility automation systems
- Large-scale distributed process control environments
It is especially suitable for high-interference electrical environments requiring signal protection and isolation.
Installation and System Integration
Proper installation ensures stable performance:
- Installed in Yokogawa CENTUM I/O racks or control cabinets
- Connected via system backplane interface
- Field wiring routed through shielded cables
- Proper grounding required to maintain isolation integrity
- Surge absorber terminal (A4S10) used for enhanced protection
Configuration and channel scaling are performed through Yokogawa engineering tools within the DCS environment.
Compatible System Components
The AAV144-S00 / A4S10 is typically used with:
- Yokogawa CENTUM VP / CS 3000 controllers
- Field voltage transmitters and industrial sensors
- System I/O backplane units
- Signal conditioning modules
- Process automation instrumentation systems
These components together form a complete distributed control system architecture.
Recommended Alternative Models
| Model | Type | Key Feature | Application |
|---|---|---|---|
| Yokogawa AAV144-S00 / A4S00 | Voltage Input Module | Standard isolation version | General DCS applications |
| Yokogawa AAV142-S50 | Non-isolated voltage input | Compact high-density design | Cost-sensitive systems |
| Yokogawa AAI141 | Current input module | 4–20 mA signal support | Process instrumentation |
| Yokogawa AAI143-S00 | Isolated analog input | Higher robustness level | Critical industrial systems |
| Yokogawa AAV141-S00 | Voltage input module | Standard compact version | Space-limited cabinets |
Key Advantages
- Fully isolated 16-channel voltage input design
- Integrated surge protection (A4S10 configuration)
- High resistance to electromagnetic interference
- Stable 16-bit signal conversion accuracy
- Fast 10 ms data update cycle
- Compact industrial-grade structure
- Reliable long-term continuous operation
- Seamless integration with Yokogawa DCS systems
Technical FAQs
Q1: What is the main function of the AAV144-S00 / A4S10?
It converts isolated analog voltage signals into digital data for DCS processing.
Q2: What is the difference between A4S00 and A4S10?
A4S10 includes additional surge absorption protection for improved electrical safety.
Q3: What signals does it support?
It supports 1–5 V DC and -10 to +10 V DC voltage inputs.
Q4: Where is it typically used?
It is used in oil & gas, chemical plants, and power generation systems.
Q5: Is it suitable for harsh environments?
Yes, it is designed for high-noise industrial environments with strong isolation and surge protection.
Conclusion
The Yokogawa AAV144-S00 / A4S10 Voltage Input Module is a high-reliability isolated analog input solution designed for industrial DCS systems. With its enhanced surge protection, strong electrical isolation, and stable signal conversion performance, it ensures accurate and safe voltage measurement in demanding industrial environments.
It is widely used in mission-critical automation systems where signal integrity, electrical safety, and continuous operation reliability are essential.