The **M2AC-AZ0-R2/CE** is a high-precision, compact signal conditioner (transducer) manufactured by **M-System**. This specific model is an **AC Current Transmitter**, designed to convert an alternating current input into a standard process output signal. --- ### 1. Technical Specifications The model code can be broken down into specific electronic configurations: | Feature | Specification | Description | |:---|:---|:---| | **Input** | AC Current | Typically 0 – 1 A or 0 – 5 A AC | | **Output** | DC Output | Configurable/Fixed standard process signals | | **Power Input (R2)** | 110V - 240V AC | Wide-range alternating current power supply | | **Accuracy** | ±0.3% | High precision for industrial monitoring | | **Response Time** | ≤ 0.5 seconds | Time to reach 90% of the output value | | **Isolation** | 3-Way Isolation | Input to Output to Power to Ground | | **Mounting** | DIN Rail | Standard 35mm industrial rail mounting | --- ### 2. Key Electronic Components & Functions * **Input Transformer:** The device contains an internal current transformer that steps down the high-current AC input to a low-voltage electronic signal while providing galvanic isolation. * **Rectifier and Filter Circuit:** Since the input is AC and the output is DC, the internal circuitry rectifies the sine wave. The "AZ0" designation often refers to **Average Sensing**, meaning it calculates the average value of the AC wave and scales it to the RMS equivalent. * **Isolation Barrier:** It utilizes optical or magnetic isolators to ensure that high-voltage surges on the input side do not damage the sensitive PLC or DCS connected to the output. * **Zero/Span Adjustments:** Located on the front panel, these potentiometers allow for fine-tuning the electronic calibration to compensate for line loss or sensor drift. --- ### 3. Application Use Cases 1. **Motor Load Monitoring:** Measuring the current draw of an industrial motor to detect overloads or dry-running pumps. 2. **SCADA Integration:** Converting raw 5A current transformer (CT) signals into 4-20mA signals that a programmable logic controller (PLC) can read. 3. **Power Management:** Monitoring branch circuit loads in factory automation environments. --- ### 4. Certification (CE) The **/CE** suffix indicates that the electronic components and housing meet European Conformity standards for: * **Electromagnetic Compatibility (EMC):** Resistance to radio frequency interference. * **Low Voltage Directive (LVD):** Safety standards for the internal power supply components.