The **M2VF2-3E-R2** is a specific model of an **Ultra-Slim Signal Conditioner** (Transducer) manufactured by **M-System**. It is designed to convert a variable frequency pulse signal into a standard instrumentation DC signal (like 4-20mA or 0-10V). --- ### 1. Key Technical Specifications Below is a breakdown of the electronic parameters for this specific configuration: | Feature | Specification | | :--- | :--- | | **Model Function** | Frequency Transmitter (Frequency to DC Converter) | | **Input Signal** | Dry Contact, Open Collector, or Voltage Pulse | | **Output Signal** | Configurable (Current or Voltage) | | **Power Input** | 24V DC | | **Isolation** | 3-way isolation (Input to Output to Power) | | **Mounting** | DIN Rail Mounting | --- ### 2. Part Number Breakdown (Model Logic) The suffix **3E-R2** defines the specific electronic hardware configuration: * **M2VF2**: Series Name (Frequency Transmitter). * **3**: Input Type. Usually indicates a wide range of pulse inputs (Contact, Open Collector, or 5V/12V/24V pulses). * **E**: Output Type. In M-System's nomenclature, **E** typically stands for a **0 – 10V DC** voltage output. * **R2**: Power Supply. **R** indicates DC power, and **2** indicates **24V DC**. --- ### 3. Electronic Components & Internal Workflow The device functions through several internal electronic stages: 1. **Input Pulse Processing**: * The input terminal receives pulse signals (e.g., from a flow meter or tachometer). * The internal circuitry includes a **Schmidt Trigger** to clean up noisy signals and ensure accurate pulse counting. 2. **Frequency-to-Voltage Conversion**: * A microprocessor or a high-precision analog timing circuit measures the time between pulses. * This frequency is converted into a linear proportional internal voltage. 3. **Galvanic Isolation**: * Utilizes **Optocouplers** or **Transformers** to provide 2000V AC isolation. This protects sensitive PLC/DCS inputs from high-voltage surges or ground loops on the field side. 4. **Output Driver**: * The internal signal is scaled to the final **0-10V DC** output range using an operational amplifier (Op-Amp) circuit. --- ### 4. Terminal Connections | Terminal No. | Function | Description | | :--- | :--- | :--- | | **1 - 2** | Output | 0–10V DC Signal | | **3 - 4** | Power Supply | 24V DC (3+, 4-) | | **5 - 6** | Input | Pulse signal from sensor | ---