The **W2VS-22B-R2/N** is an industrial-grade, high-performance **Signal Conditioner (Transducer)** manufactured by **M-System**. Its primary function is to isolate and convert two independent DC input signals into two isolated DC output signals. --- ### 1. General Specifications This device belongs to the *W2 Series* of compact signal conditioners. The "W" indicates a **Dual-Output** or **Dual-Channel** design. | Feature | Specification | | :--- | :--- | | **Model Type** | Ultra-Slim Signal Splitter / Transducer | | **Channels** | 2 Independent Channels | | **Isolation** | 3-way isolation (Input to Output to Power) | | **Construction** | Terminal block style (DIN rail mounting) | | **Housing Material** | Flame-resistant resin (Black) | --- ### 2. Part Number Breakdown (W2VS-22B-R2/N) Understanding the suffix codes is critical for identifying the electronic behavior of this specific unit: | Code | Meaning | Description | | :--- | :--- | :--- | | **W2VS** | Model Series | Dual Output Signal Conditioner (Isolator) | | **2** | Input | 4 – 20 mA DC | | **2** | Output 1 | 4 – 20 mA DC | | **B** | Output 2 | 2 – 10 V DC (Specific to "B" variant) | | **R** | Power Input | 24V DC | | **2** | Performance | High Accuracy / Standard Response | | **/N** | Option | Specific terminal coating or standard compliance | --- ### 3. Electronic Components & Functionality #### A. Input Circuit (4-20mA) The input stage features a precision shunt resistor. When the 4-20mA current flows through, it creates a voltage drop which is then sampled by the internal circuitry. It includes **surge protection** to prevent damage from line spikes. #### B. Isolation Barrier This is the core electronic feature. It uses **Optical or Galvanic Isolation** (typically transformer-based for M-System): * **Voltage Resistance:** Usually rated for 2000V AC @ 1 minute. * **Purpose:** It prevents ground loops and protects sensitive PLC/DCS controllers from high-voltage transients on the field side. #### C. Output Stages The "R2" designation implies high-precision operational amplifiers that drive the outputs: 1. **Output 1 (Current):** A 4-20mA current loop driver. 2. **Output 2 (Voltage):** A 2-10V voltage source driver. #### D. Power Supply Section Designed for **24V DC** operation. It contains internal DC-DC converters to provide stable, regulated power to the isolated input and output stages independently. --- ### 4. Technical Summary Table | Parameter | Value | | :--- | :--- | | **Accuracy** | ±0.1% | | **Temperature Coefficient** | ±0.015% / °C | | **Response Time** | ≤ 0.5 seconds (0 – 90%) | | **Insulation Resistance** | ≥ 100 MΩ with 500V DC | | **Power Consumption** | Approx. 3W | ---