The **M2VF-AA-R2** is a high-performance **Mini-M series signal conditioner** (specifically a Voltage/Current Input to Voltage Output transmitter) manufactured by **M-System**. It is designed to galvanically isolate and convert analog signals for industrial automation and control systems. --- ## 1. Technical Specifications The following table outlines the primary electronic characteristics of the M2VF-AA-R2: | Feature | Specification | | :--- | :--- | | **Model Type** | Ultra-slim Signal Conditioner (Mini-M Series) | | **Input Signal** | 4 to 20 mA DC (Input resistance 250 Ω) | | **Output Signal** | 4 to 20 mA DC (Load resistance 600 Ω max.) | | **Power Input** | 24V DC (Operating range 24V ± 10%) | | **Isolation** | 3-way isolation (input to output to power) | | **Accuracy** | ±0.1% of span | | **Response Time** | ≤ 0.5 seconds (0 to 90%) | | **Housing Material** | Flame-resistant resin (Black) | --- ## 2. Key Electronic Components & Design The device is engineered for high reliability in harsh industrial environments. Its electronic architecture focuses on: ### A. Three-Way Isolation The "R2" designation indicates 24V DC power, but the unit maintains strict galvanic isolation between: 1. **The Input Circuit** (Sensor/Transmitter side) 2. **The Output Circuit** (PLC/DCS/Controller side) 3. **The Power Supply** *This prevents ground loops and protects sensitive equipment from high-voltage surges.* ### B. Signal Conditioning Circuitry * **Precision Resistors:** Used to convert the current input into a stable voltage for internal processing. * **Zero and Span Adjustments:** Located on the front panel, these allow for fine-tuning the electronic calibration (±5%). * **Active Filtering:** Integrated circuits filter out high-frequency noise and electromagnetic interference (EMI). ### C. Physical Interface * **Terminal Blocks:** M3 screw terminals for secure electrical connections. * **DIN Rail Mounting:** The unit is designed to snap onto a standard 35mm DIN rail. * **LED Indicator:** A power LED indicates the status of the internal DC-DC converter. --- ## 3. Terminal Connection Map *Note: Always refer to the specific wiring diagram on the side of the unit before installation.* | Terminal No. | Function | Description | | :--- | :--- | :--- | | **1** | Output (+) | Positive Output to Receiver | | **2** | Output (-) | Negative Output to Receiver | | **3** | Power (U) | +24V DC Power Supply | | **4** | Power (V) | 0V DC Power Supply | | **5** | Input (+) | Positive Input from Source | | **6** | Input (-) | Negative Input from Source | ---