The **M2AC-AZ1-R2** is a high-performance, plug-in type signal conditioner (isolator) manufactured by **M-System**. It is designed to convert an AC current input into a standard DC output signal, providing electrical isolation between the input, output, and power source. --- ### 1. Technical Specifications Below are the primary electronic characteristics of the M2AC-AZ1-R2: | Feature | Specification | |:---|:---| | **Input Signal** | 0 – 1 A AC | | **Output Signal** | 4 – 20 mA DC | | **Power Input** | 100 – 240V AC (50/60 Hz) | | **Accuracy** | ±0.3% | | **Response Time** | ≤ 0.5 seconds (0 – 90%) | | **Isolation** | Input to Output to Power (2000V AC) | | **Mounting** | Surface or DIN rail (Plug-in socket) | --- ### 2. Core Electronic Components & Architecture The device functions through several internal stages to ensure signal integrity and safety: #### A. Input Stage (Current Transformer) The "AZ1" designation indicates a 0-1A AC input range. Internally, the device uses a miniature precision current transformer to step down the input current while providing the first layer of galvanic isolation. #### B. Rectification & Filtering Since the input is AC and the output must be DC, the internal circuitry employs a bridge rectifier and a smoothing filter. This converts the sinusoidal AC wave into a proportional DC voltage level. #### C. Isolation Barrier (Optical/Magnetic) The M2 series utilizes a 3-way isolation scheme. This prevents "ground loops" and protects sensitive control equipment (like PLCs) from high-voltage surges on the input line. * **Input-to-Output:** Protects the controller. * **Input-to-Power:** Protects the local power grid. #### D. Output Driver (4-20mA Loop) The final stage is a constant-current generator. It translates the processed internal signal into a standard 4-20mA current loop. The "R2" in the part number specifies the power supply requirement (standard AC power). --- ### 3. Wiring Configuration The unit typically uses an 8-pin or 11-pin base (depending on the specific socket). ```text Pin Connections (General Layout): 1. Output (+) 2. Output (-) 3. AC Power (L) 4. AC Power (N) 5. Input (U) 6. Input (V) ``` --- ### 4. Key Applications * **Motor Load Monitoring:** Converting high AC currents from motors into signals a PLC can read. * **Signal Normalization:** Standardizing different AC current levels for a unified control system. * **Safety:** Isolating high-voltage AC field equipment from low-voltage DC control rooms.