The **M2AC-A23-R2/CE** is a specific model of an **M2 Series signal conditioner** (isolator) manufactured by **M-System**. It is designed to convert an AC voltage input into a standard DC output signal, providing galvanic isolation between the input, output, and power supply. --- ### ## Technical Specifications The model number can be broken down into specific electronic components and configurations: | Component Code | Description | Specification Details | | :--- | :--- | :--- | | **M2AC** | **Base Model** | AC Transmitter (Signal Conditioner) | | **A** | **Input** | 0 – 100V AC | | **23** | **Output** | 0 – 10V DC (High Impedance) | | **R** | **Power Input** | 24V DC | | **2** | **Accuracy/Option** | Standard Accuracy | | **CE** | **Certification** | CE Marking (European Conformity) | --- ### ## Key Electronic Features 1. **Isolation Technology**: It features **3-way isolation**. This means the Input, Output, and Power circuits are electrically separated. This protects sensitive PLC/DCS inputs from high-voltage surges or ground loops on the AC line. 2. **Signal Conversion (RMS vs. Mean)**: While specific to the internal circuitry, these units typically use a mean-rectifying circuit calibrated to the RMS value of a sine wave to convert AC voltage into a steady DC voltage. 3. **Physical Interface**: * **Socket-type mounting**: The electronic core is housed in a module that plugs into a base socket (M2N series), allowing for easy replacement without rewiring. * **DIN Rail Mount**: Designed for standard industrial control panels. 4. **Output Drive**: The "23" code indicates a 0-10V DC output, which typically requires a load resistance of $10k \Omega$ or higher. --- ### ## Connection Diagram (Conceptual) ```mermaid graph LR A[AC Input: 0-100V] --> B{M2AC Unit} C[Power: 24V DC] --> B B --> D[DC Output: 0-10V] ``` --- ### ## Common Applications * **Grid Monitoring**: Converting 100V AC mains voltage into a 0-10V signal for PLC monitoring. * **Motor Control**: Monitoring the voltage supply to industrial motors to detect under-voltage or over-voltage conditions. * **Noise Reduction**: Using the isolation feature to prevent electrical noise from the power lines from entering sensitive measurement systems.