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- Yokogawa
- AAV144-S00/K4A00
- Voltage Input Module (Isolated)
- Japan
- 107.5 × 130 × 32.8 mm
- 0.2 kg
- Xiamen, China
- New & In Stock
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Product Overview
The Yokogawa AAV144-S00 / K4A00 Voltage Input Module is an isolated analog input module designed for Yokogawa CENTUM Distributed Control Systems (DCS). It is used to acquire field voltage signals and convert them into high-resolution digital data for process monitoring and automation control.
This module is engineered for high reliability, strong electrical isolation, and stable performance in industrial environments, making it suitable for critical process industries such as oil & gas, petrochemical, and power generation systems.
Compared with standard terminal configurations, the K4A00 version provides a dedicated KS cable interface adapter solution, enabling more flexible and robust field wiring integration in control cabinet environments.
Technical Specifications
| Parameter | Details |
|---|---|
| Manufacturer | Yokogawa |
| Model | AAV144-S00 / K4A00 |
| 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 |
| Interface Type | KS cable adapter (K4A00 configuration) |
| 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 / K4A00 operates as a high-precision isolated analog signal interface between field instrumentation and the DCS system.
Its working process includes:
- Receiving analog voltage signals from field devices
- Routing signals through isolated input circuits
- Performing noise filtering and signal conditioning
- Converting analog signals into 16-bit digital data
- Transmitting processed data to the control system in real time
The K4A00 interface design improves field wiring flexibility, making installation more efficient in complex industrial cabinet layouts.
Role in Industrial Control Systems
Within Yokogawa DCS architecture, the module functions as a front-end data acquisition and isolation unit.
It is responsible for:
- Accurate collection of voltage-based process signals
- Electrical isolation between field devices and control systems
- Stable real-time process data acquisition
- Protection of control systems from electrical noise and surges
This ensures high system integrity, operational safety, and reliable process control performance.
Industrial Applications
The AAV144-S00 / K4A00 is widely used in:
- Oil and gas production facilities
- Petrochemical and refining plants
- Power generation and turbine control systems
- Chemical processing industries
- Water treatment and utility automation systems
- Large-scale distributed control system environments
It is particularly effective in environments requiring stable signal acquisition with flexible field wiring integration.
Installation and System Integration
Proper installation is essential for optimal performance:
- Installed in Yokogawa CENTUM I/O racks or control cabinets
- Connected via system backplane architecture
- Field wiring implemented using KS cable interface (K4A00)
- Shielded cables recommended for noise reduction
- Proper grounding required to maintain isolation performance
Configuration and scaling are managed through Yokogawa engineering tools within the DCS system environment.
Compatible System Components
The AAV144-S00 / K4A00 is commonly used with:
- Yokogawa CENTUM VP / CS 3000 controllers
- Field voltage transmitters and sensors
- KS cable interface systems
- System I/O backplane modules
- Signal conditioning and interface units
- Process automation instrumentation
Together, these components form a complete industrial distributed control architecture.
Recommended Alternative Models
| Model | Type | Key Feature | Application |
|---|---|---|---|
| Yokogawa AAV144-S00 / A4S00 | Voltage Input Module | Standard terminal version | General DCS systems |
| Yokogawa AAV144-S00 / A4S10 | Voltage Input Module | Surge protection terminal | Harsh electrical environments |
| Yokogawa AAV142-S50 | Voltage Input Module | Non-isolated compact type | Cost-sensitive systems |
| Yokogawa AAI141 | Current Input Module | 4–20 mA input support | Process instrumentation |
| Yokogawa AAI143-S00 | Isolated Analog Input | Higher robustness design | Critical applications |
Key Advantages
- Fully isolated 16-channel voltage input design
- Flexible KS cable interface (K4A00 configuration)
- High resistance to electromagnetic interference
- Stable 16-bit signal conversion accuracy
- Fast 10 ms data acquisition cycle
- Compact industrial-grade structure
- Reliable long-term continuous operation
- Seamless integration with Yokogawa CENTUM systems
Technical FAQs
Q1: What is the main function of the AAV144-S00 / K4A00?
It converts isolated analog voltage signals into digital data for DCS processing.
Q2: What is the advantage of the K4A00 configuration?
It provides a KS cable interface adapter for more flexible and reliable field wiring.
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, petrochemical, and power generation industries.
Q5: Is it suitable for harsh environments?
Yes, it is designed for high-noise industrial environments with strong isolation.
Conclusion
The Yokogawa AAV144-S00 / K4A00 Voltage Input Module is a high-reliability isolated analog input solution designed for industrial DCS applications. With its KS cable interface flexibility, strong electrical isolation, and stable signal conversion performance, it ensures accurate and safe voltage measurement in complex industrial environments.
It is widely used in mission-critical automation systems where signal integrity, wiring flexibility, and long-term operational stability are essential.