The **M2AC-AD3-R2/Q** is a high-performance, plug-in type signal conditioner (transducer) manufactured by **M-System**. It is specifically designed to convert an AC current input into a standard instrumentation DC signal. --- ### 1. Technical Specifications The "R2/Q" suffix indicates specific power and configuration options. Below are the core technical specifications: | Feature | Specification | | :--- | :--- | | **Input Type** | AC Current (e.g., 0–1A, 0–5A AC) | | **Output Type** | DC Voltage or Current (e.g., 4–20mA, 0–10V) | | **Power Input** | 110V AC (Standard for R2 designation) | | **Accuracy** | ±0.3% to ±0.5% (depending on specific range) | | **Response Time** | ≤ 0.5 seconds (0 to 90%) | | **Isolation** | 3-way isolation (Input to Output to Power) | | **Mounting** | Plug-in socket (surface or DIN rail) | --- ### 2. Core Electronic Components The device utilizes several internal stages to process the signal: 1. **Input Transformer:** Provides primary isolation and steps down the AC current to a level manageable by the internal circuitry. 2. **Rectifier & Filter Circuit:** Converts the AC waveform into a pulsating DC signal and smooths it to determine the RMS or average value. 3. **Isolation Amplifier:** Uses optical or magnetic coupling to ensure the input, output, and power supply are electrically isolated (typically up to 2000V AC). 4. **Output Driver:** A precision operational amplifier stage that scales the signal to the desired DC range (e.g., 4–20mA). 5. **Power Module:** An internal AC/DC converter that regulates the 110V AC input to power the internal active components. --- ### 3. Part Number Breakdown (M2AC-AD3-R2/Q) * **M2AC:** Series identification (AC Input Signal Conditioner). * **AD3:** Specific input/output configuration (Standard AC Current to DC). * **R2:** Power Supply code (typically 100–120V AC). * **Q:** Indicates "Special Order" or "Option Specified." This usually means the device has custom calibration, specific coating (like tropicalization), or a non-standard frequency response. --- ### 4. Application Usage This part is commonly used in industrial automation for: * **Motor Load Monitoring:** Converting high AC motor currents into 4-20mA signals for a PLC. * **Power Management:** Feeding current data into SCADA systems. * **Safety Isolation:** Protecting sensitive control electronics from high-voltage AC power lines.