Based on the technical specifications for the **M2VF2-3A-R2/N**, this device is an **M2-System Signal Conditioner (Frequency Transmitter)** manufactured by M-System. It is designed to convert pulse frequency signals from various sensors into standard analog signals. --- ### 1. General Specifications This specific model code breaks down into the following functional components: | Component | Code | Description | | :--- | :--- | :--- | | **Series** | M2VF2 | Frequency Transmitter (Mini-M Series) | | **Input** | 3 | Open Collector or Mechanical Contact | | **Output** | A | 4 – 20 mA DC | | **Power Input** | R2 | 11 – 27 V DC | | **Option** | /N | Without CE marking (Standard Specification) | --- ### 2. Key Electronic Features #### A. Input Section (Frequency Detection) * **Sensor Compatibility:** Designed to interface with dry contacts, open collectors, or voltage pulses. * **Frequency Range:** Configurable to detect specific ranges (e.g., 0–10 Hz up to 0–10 kHz depending on the specific calibration). * **Pulse Width:** Requires a minimum pulse width (typically around 10μs to 50ms depending on the sensor type) to ensure accurate frequency sampling. #### B. Signal Conversion (DSP/Analog Path) * **Integration:** The internal circuitry performs a frequency-to-voltage conversion. It measures the interval between pulses or the number of pulses over time and translates this into a proportional current. * **Accuracy:** Typically ±0.1% of span. * **Response Time:** Usually ≤ 0.5 seconds (0 to 90%). #### C. Output Section * **Output Signal:** 4 – 20 mA DC. * **Load Resistance:** Can typically drive a load up to 550 $\Omega$. * **Isolation:** This unit features **3-way isolation**. This means the Input, Output, and Power circuits are electrically separated from each other, preventing ground loops and protecting equipment from surges. --- ### 3. Electrical Connections The device is a plug-in type, usually mounted on a socket (like the 11-pin base). | Terminal | Function | | :--- | :--- | | **Input (+ / -)** | Connection for the pulse-generating sensor. | | **Output (+ / -)** | Connection to the PLC, controller, or recorder. | | **Power (U / V)** | 24V DC (Range: 11 – 27V). | --- ### 4. Physical Build * **Housing:** Small, space-saving "Mini-M" footprint. * **Adjustments:** Front-facing **Zero and Span** adjustments (potentiometers) for fine-tuning the 4mA and 20mA points. * **LED Indicator:** Usually includes a power indicator LED to verify operational status.