The **W2VS-ABA-R2** is a high-performance, industrial-grade signal conditioner/transmitter (specifically a **Two-Wire Isolator**) manufactured by **M-System**. It is designed to take a DC input signal and provide an isolated DC output signal, typically used to eliminate ground loops and protect sensitive control systems. --- ## 1. Technical Specifications Table The following table outlines the core electronic parameters for the W2VS-ABA-R2 model: | Component/Feature | Specification | | :--- | :--- | | **Model Type** | Ultra-slim Signal Conditioner (W2-UNIT series) | | **Input Signal (Code A)** | 4 – 20 mA DC | | **Output Signal (Code A)** | 4 – 20 mA DC | | **Power Input (Code R2)** | 11 – 27 V DC (Ripple 10% p-p max) | | **Accuracy** | ±0.1% of span | | **Isolation** | Input to output to power (2000V AC @ 1 minute) | | **Response Time** | ≤ 0.5 seconds (0 – 90%) | | **Mounting** | DIN Rail Mounting | --- ## 2. Key Electronic Features ### A. Triple Isolation The unit provides a 3-way isolation architecture: * **Input to Output:** Prevents noise and surges from the field sensor from reaching the PLC/DCS. * **Input to Power:** Protects the internal circuitry from power fluctuations. * **Output to Power:** Ensures the control system loop remains clean. ### B. Ultra-Slim Design The "W2" series is characterized by its compact 12mm width, allowing for high-density installation in electrical cabinets where space is limited. ### C. Loop Powered Capability While this specific model (R2) uses a 24V DC power supply, it operates as a high-precision buffer to maintain current loop integrity over long distances. --- ## 3. Terminal Connection Diagram The electronic wiring is simplified through plug-in terminal blocks. ```text Terminal | Function ---------|------------------ 1 | Output (+) 2 | Output (-) 3 | Input (+) 4 | Input (-) 5 | Power (+) 24V DC 6 | Power (-) 0V ``` --- ## 4. Application Use Case This part is commonly used in environments where: 1. **Ground Loops** exist between the field instrument and the control room. 2. **Signal Conversion** is needed (though this specific ABA model is 1:1, it acts as a buffer). 3. **Circuit Protection** is required to prevent a failure in one sensor from taking down the entire 24V DC power bus. ---