The **M2VF-C0-R2** is a high-performance **V/F (Voltage-to-Frequency) Converter** module part of the M2-Series signal conditioners manufactured by **M-System**. It is designed to convert a standard DC voltage input into a proportional pulse frequency output. --- ## 1. Technical Specifications The model code `M2VF-C0-R2` breaks down into specific electronic characteristics: | Code Segment | Component Detail | Description | | :--- | :--- | :--- | | **M2VF** | Model Series | V/F Converter (Plug-in type) | | **C** | Input Signal | 1 – 5V DC (Input resistance 1M$\Omega$ min.) | | **0** | Output Signal | Open Collector (High frequency) | | **R2** | Power Input | 11V – 27V DC | --- ## 2. Key Electronic Components & Internal Design ### A. Input Circuitry The input stage utilizes a high-impedance operational amplifier to ensure minimal loading on the source signal. * **Voltage Range:** Typically 1 to 5V DC. * **Input Impedance:** $\ge$ 1 M$\Omega$ when powered; 10 k$\Omega$ when unpowered. ### B. Conversion Logic (V/F Converter) The core of the device is a precision V/F converter IC or discrete circuit that generates a pulse train where the frequency ($f$) is linearly proportional to the input voltage ($V_{in}$). * **Accuracy:** $\pm$0.1% of span. * **Temp. Coefficient:** $\pm$0.015% per °C. ### C. Output Configuration (Open Collector) The "0" designation indicates an **Open Collector** output, which acts as a solid-state switch. * **Rating:** 30V DC @ 100mA maximum. * **Saturation Voltage:** $\le$ 0.4V DC. * **Frequency Range:** Configurable, often up to 10 kHz (depending on specific factory settings). --- ## 3. Physical & Installation Features * **Construction:** Plug-in socket structure for easy maintenance without disconnecting wires. * **Isolation:** 3-way isolation (Input to Output to Power). * **Adjustments:** Front-facing Zero and Span adjustments (multi-turn potentiometers) for fine-tuning the frequency output. --- ## 4. Wiring Diagram Representation Below is a simplified representation of the electronic connections: ```mermaid graph LR A[Input 1-5V DC] --> B[M2VF Unit] C[Power 24V DC] --> B B --> D[Pulse Output / Open Collector] ```