The **M2VF-01-R2** is a high-performance **Frequency Transmitter** (or Frequency-to-DC Converter) manufactured by **M-System**. It is part of the Mini-M series and is primarily used in industrial automation to convert pulse train signals from sensors into standard analog signals. --- ### ## Technical Specifications The "R2" suffix specifically identifies the power input and configuration of the device. | Component / Feature | Description | | :--- | :--- | | **Model Type** | Frequency Transmitter (Mini-M Series) | | **Input Signal** | Pulse train (Dry contact, Open collector, Voltage pulse) | | **Output Signal** | 4 – 20 mA DC (Current) or 0 – 10V DC (Voltage) | | **Power Supply (R2)** | 11 – 27 V DC | | **Accuracy** | ±0.1% | | **Response Time** | Max. 0.5 sec (0 – 90%) | | **Mounting** | DIN Rail or Surface Mount | --- ### ### Electronic Components & Internal Functions The M2VF-01-R2 operates through three primary electronic stages: 1. **Input Conditioning Circuit:** * **Isolation:** Uses optical or magnetic isolation to protect the internal circuitry from high-voltage spikes on the input line. * **Threshold Detection:** It senses pulses based on a specific voltage threshold (typically 2V or higher for voltage pulses). 2. **Frequency-to-Voltage Converter (F/V):** * The core of the unit is a precision F/V converter. It measures the time interval between pulses and generates a proportional internal DC voltage. 3. **Output Driver:** * This stage amplifies the internal DC signal to a standard industrial range (like 4-20mA). It is designed to drive high-impedance loads (up to 600Ω for current outputs). --- ### ### Wiring Configuration The device uses a plug-in base for easy maintenance. Below is the typical terminal arrangement: | Terminal | Function | Description | | :--- | :--- | :--- | | **1 - 2** | Output (+) / (-) | Connects to the PLC/Controller input | | **3 - 4** | Input (+) / (-) | Connects to the pulse source (e.g., Flowmeter) | | **5 - 6** | Power (+) / (-) | 24V DC Power Input | --- ### ### Common Applications * **Flow Measurement:** Converting pulses from a turbine flowmeter into a 4-20mA signal for a PLC. * **Motor Speed Monitoring:** Converting RPM signals from a magnetic pickup or encoder into a speed control signal. * **Production Counting:** Translating pulse rates from a conveyor sensor into a rate-of-flow analog signal.