The **M2VT-B1-R2/K** is a high-performance **V/I Converter (Signal Conditioner)** manufactured by **M-System**. It is designed to convert DC voltage or current input signals into standardized DC voltage or current output signals with galvanic isolation. Below is a breakdown of its technical specifications and electronic components. --- ## 1. Technical Specifications | Feature | Specification | | :--- | :--- | | **Model Series** | M2VT (Mini-M Series) | | **Input Signal** | DC Voltage or Current (Configurable) | | **Output Signal** | DC Voltage or Current (Configurable) | | **Power Input (R2)** | 11 - 27V DC | | **Response Time** | $\le$ 0.5 seconds (0 – 90%) | | **Accuracy** | $\pm$0.1% | | **Isolation** | 3-Way (Input - Output - Power) | | **Mounting** | DIN Rail Mounting | --- ## 2. Model Number Suffix Breakdown The suffix `/K` often denotes a specific customization or coating: * **M2VT**: Basic model (Signal Conditioner). * **B1**: Specific input/output range configuration (Often 4-20mA or 1-5V). * **R2**: 24V DC power supply requirement. * **K**: Usually indicates **Multi-output** or specific **Fast Response** options depending on the production lot (often refers to a customized gain or response curve). --- ## 3. Electronic Architecture The device functions through three primary internal stages to ensure signal integrity: ### A. Input Stage * **Shunt Resistor/Attenuator:** If the input is current, a high-precision shunt converts it to voltage. * **Surge Absorbers:** Protects the internal circuitry from voltage spikes on the field side. ### B. Isolation & Processing Stage * **Optical Isolation:** Uses opto-isolators to decouple the input from the output, preventing ground loops. * **Zero/Span Adjustment:** Contains high-precision potentiometers (accessible on the front) to calibrate the lower and upper limits of the signal. ### C. Output Stage * **Amplifier Circuit:** Scales the signal to the desired industrial range (e.g., 4-20mA). * **Drive Circuitry:** Ensures the output can drive the required load impedance (typically up to 600 $\Omega$ for current outputs). --- ## 4. Connection Diagram | Terminal | Function | Description | | :---: | :--- | :--- | | **1 & 2** | Input | Connect to the sensor/source | | **3 & 4** | Output | Connect to PLC/Controller | | **5 & 6** | Power Supply | 24V DC (+ / -) | ---