The part number **M2VF2-5W1-R2/Q** refers to a high-precision, signal-isolated **M2-Series Component-type Signal Conditioner** manufactured by **M-System** (now part of MG CO., LTD.). This specific device is designed to convert a variable frequency input (from a pulse generator, flow meter, or rotary encoder) into a standard analog output signal. --- ### Technical Specifications Breakdown | Component Segment | Description | Detail | | :--- | :--- | :--- | | **Model** | M2VF2 | Frequency Transmitter (Potentiometer/Plug-in) | | **Power Input** | 5W1 | 100 – 120V AC (50/60Hz) | | **Output** | R2 | 4 – 20mA DC (Load resistance 600$\Omega$ max) | | **Options** | /Q | Custom specific or special coating (Check manual) | | **Isolation** | 3-Port | Input to Output to Power | --- ### Electronic Features & Functionality #### 1. Pulse-to-Analog Conversion The core electronic function is to measure the frequency of incoming pulses. The internal circuitry counts the time interval between pulses and translates that mathematical value into a proportional current (4-20mA). #### 2. Signal Isolation The unit provides galvanic isolation between: * **Input Circuitry:** Protects the field sensor. * **Output Circuitry:** Protects the PLC or DCS system. * **Power Supply:** Prevents ground loops and noise interference. #### 3. Threshold and Noise Filtering The electronics include a **noise filter** and **chatter-prevention** logic. This ensures that electrical "bounce" from mechanical contacts or electromagnetic interference (EMI) does not cause false frequency readings. #### 4. Response Time The internal electronics are tuned for a response time of $\leq$ 0.5 seconds (0 – 90%) for most frequency ranges, ensuring real-time monitoring of motor speeds or flow rates. --- ### Physical Interface * **Housing:** Plug-in base (typically 11-pin or 8-pin depending on the sub-model). * **LED Indicators:** Usually features a power indicator LED to verify internal DC bus health. * **Adjustments:** Zero and Span adjustments are accessible on the front panel to calibrate the 4-20mA signal. ---