The **M2VS-AA-R2/UL** is a high-performance **Mini-M System Signal Conditioner** (Isolator) manufactured by M-System. It is designed to take an analog input signal and provide an isolated analog output signal, protecting control systems from electrical noise and surge. --- ### 1. Technical Specifications The model code breaks down into specific electronic configurations: | Component Code | Description | Specifications | | :--- | :--- | :--- | | **M2VS** | Series Name | Ultra-slim Signal Conditioner | | **AA** | Input / Output | **Input:** 4–20mA DC / **Output:** 4–20mA DC | | **R** | Power Input | 24V DC | | **2** | Isolation | 3-way isolation (Input to Output to Power) | | **UL** | Standard | UL/cUL approved | --- ### 2. Key Electronic Features #### A. 3-Way Isolation This is a critical electronic feature where the **Input**, **Output**, and **Power supply** circuits are galvanically isolated from one another. * **Dielectric Strength:** 2000V AC @ 1 minute. * **Benefit:** Prevents ground loops and protects sensitive PLC/DCS inputs from high-voltage transients on the field side. #### B. Signal Conversion & Accuracy The device uses high-precision operational amplifiers and components to ensure signal integrity. * **Accuracy:** ±0.1% of span. * **Temperature Coefficient:** ±0.015% per °C (ensures stability in industrial environments). * **Response Time:** Approximately 0.5 seconds (0 to 90%). #### C. Physical Interface * **Front Adjustments:** Equipped with zero and span adjustments (potentiometers) accessible via the front panel for field calibration. * **Mounting:** Plug-in socket structure (base mounted on DIN rail). --- ### 3. Electronic Connection Diagram The unit typically utilizes a 10-pin or 8-pin base socket. Below is the general electronic pinout logic: | Terminal No. | Function | Connection | | :--- | :--- | :--- | | **1 & 2** | Output (+) / (-) | To PLC/Controller Input | | **4 & 5** | Input (+) / (-) | From Sensor/Transmitter | | **7 & 8** | Power (+) / (-) | 24V DC Supply | --- ### 4. Summary of Application The **M2VS-AA-R2/UL** is primarily used in automation to: 1. Match impedance between sensors and controllers. 2. Eliminate electrical interference in long-distance 4-20mA loops. 3. Ensure safety compliance via its **UL** certification for North American markets.