The **W2VS-AB15-R** belongs to the **W2VS series** of signal converters/isolators manufactured by **M-System**. This specific model is a **Dual-Output Signal Conditioner** (often referred to as a signal isolator or transmitter) designed for industrial automation and process control. Below is a breakdown of its electronic specifications and technical architecture. --- ## 1. Technical Specifications The model code `W2VS-AB15-R` can be decoded as follows: | Component Code | Description | Details | | :--- | :--- | :--- | | **W2VS** | Series Name | Dual-output signal conditioner (compact size) | | **A** | Input Signal | 4 – 20 mA DC | | **B** | Output 1 | 2 – 10 V DC | | **1** | Output 2 | 4 – 20 mA DC | | **5** | Power Input | 100 – 240 V AC | | **R** | Standards/Options | Typically refers to standard housing/RoHS compliance | --- ## 2. Key Electronic Components & Functions The device operates using three primary internal stages to ensure signal integrity and safety: ### A. Input Stage * **Current Shunt:** Converts the 4-20mA input loop into a low-voltage signal for internal processing. * **Protection:** Includes surge suppressors to protect the internal circuitry from spikes in the field wiring. ### B. Isolation Barrier (Galvanic Isolation) * **Method:** Uses optical or magnetic coupling. * **Isolation Points:** Provides 3-way isolation (Input to Output 1 to Output 2 to Power). * **Rating:** Typically rated for 2000V AC isolation for 1 minute. This prevents ground loops from distorting signals. ### C. Output Stage * **Dual Drivers:** Contains two independent output circuits. * **Span/Zero Adjustments:** Front-mounted potentiometers allow for fine-tuning the calibration of both the voltage output (Output 1) and the current output (Output 2). --- ## 3. Performance Parameters | Parameter | Specification | | :--- | :--- | | **Accuracy** | ±0.1% of span | | **Temperature Coefficient** | ±0.015% / °C | | **Response Time** | ≤ 0.5 seconds (0 – 90%) | | **Insulation Resistance** | 100 MΩ with 500V DC | | **Housing Material** | Flame-resistant resin (Black) | --- ## 4. Wiring Diagram (Conceptual) The unit is typically mounted on a DIN rail and uses a multi-pin base. ```text [ Power L ] --- (1) (5) --- [ Output 1 (+) ] [ Power N ] --- (2) (6) --- [ Output 1 (-) ] (7) --- [ Output 2 (+) ] [ Input + ] --- (3) (8) --- [ Output 2 (-) ] [ Input - ] --- (4) ``` --- ## 5. Typical Application This part is used when a single sensor signal (e.g., a flow meter) needs to be sent to two different devices simultaneously—for example, a **PLC** (Programmable Logic Controller) and a **Local Digital Display**—without the two devices interfering with each other electronically.