The **M2VS-D2-R2/Q** is a high-performance, signal conditioning transducer (isolator) manufactured by **M-System**. It is primarily used in industrial automation to convert one DC voltage/current signal into another while providing galvanic isolation. --- ### ## Technical Specifications Table | Feature | Specification | | :--- | :--- | | **Model Series** | M2 (Mini-M) Series | | **Input Signal** | 4 – 20 mA DC | | **Output 1** | 4 – 20 mA DC | | **Output 2** | 1 – 5 V DC | | **Power Input (R2)** | 110V AC (Operating range 85 – 132V AC) | | **Isolation** | 3-way isolation (Input to Output to Power) | | **Mounting** | DIN Rail | | **Option (/Q)** | Special customizations (often conformal coating or specific labeling) | --- ### ## Breakdown of the Model Code To understand the electronic capabilities, we must decode the suffix parts: 1. **M2VS**: This identifies the unit as a **Signal Transmitter** (Linearizer/Isolator) from the Mini-M family. 2. **D2**: Represents the Input and Output configuration. In this specific configuration: * **Input:** 4 – 20 mA DC. * **Output:** Dual output (Current and Voltage simultaneously). 3. **R2**: Specifies the **Power Supply** requirements. * **R** denotes AC power. * **2** specifically points to 110V - 120V AC. 4. **SLASHQ (/Q)**: This is a "Special Specification" suffix. * Commonly, this refers to **Ex-factory settings** or **Conformal Coating** for moisture/dust protection in harsh environments. --- ### ## Internal Electronic Components & Functions * **Galvanic Isolation:** The device uses optical or magnetic coupling to separate the input circuit, output circuit, and power supply. This prevents "ground loops" and protects sensitive PLC/DCS equipment from high-voltage surges. * **Precision Resistors:** High-stability shunt resistors are used to sense the input current (4-20mA) and convert it into a proportional internal voltage for processing. * **Operational Amplifiers (Op-Amps):** Low-drift amplifiers are utilized to scale and linearize the signal, ensuring the output maintains high accuracy (typically ±0.1%). * **Switching Power Supply:** The "R2" section contains a small internal transformer and rectifier circuit to convert the 110V AC mains into regulated DC for the internal logic. --- ### ## Wiring Connections (Typical) | Terminal | Function | Description | | :--- | :--- | :--- | | **4 / 5** | Input (+) / (-) | Connect to the sensor or source (4-20mA). | | **1 / 2** | Output 1 (+) / (-) | Primary loop (4-20mA). | | **3 / 6** | Output 2 (+) / (-) | Secondary loop (1-5V). | | **7 / 8** | Power U / V | 110V AC Power Supply. |