The **M2AC-AZ0-R/Q** is a specific part number belonging to the **M2 Series** of Signal Conditioners manufactured by **M-System** (now often branded under **MG CO., LTD.**). These devices are high-performance, plug-in type signal converters used in industrial automation to isolate and convert analog signals. --- ### 1. Part Number Breakdown To understand the electronic capabilities, we can decode the nomenclature: | Code Segment | Component Detail | Description | | :--- | :--- | :--- | | **M2AC** | **Model Name** | AC Current Transmitter (converts AC input to DC output) | | **-A** | **Input Type** | 0 – 1 A AC | | **Z** | **Output 1** | Specified DC output (often customized or voltage-based) | | **0** | **Output 2** | None (Single output configuration) | | **-R** | **Power Input** | 24V DC | | **-Q** | **Option Code** | Quality/Special requirements (often signifies specific certifications) | --- ### 2. Key Electronic Specifications The internal electronics are designed for high dielectric strength and signal integrity in noisy industrial environments. * **Conversion Method:** The device uses an average-sensing RMS calculating circuit (standard) or a True RMS conversion (if specified) to turn an AC input into a proportional, isolated DC signal. * **Isolation Structure:** 3-way isolation (Input to Output to Power). This prevents ground loops and protects sensitive PLC/DCS inputs from high-voltage surges on the AC line. * **Accuracy:** Typically ±0.3% to ±0.5% of span. * **Response Time:** Approximately 0.5 seconds (to reach 90% of the signal). * **Overload Capacity:** Designed to withstand momentary current surges (e.g., 10x the rated input for several seconds). --- ### 3. Connection Diagram (General) The unit uses a standard 8-pin or 11-pin plug-in base. Below is the typical pin assignment for this series: ```text Terminal | Function ---------|-------------------- 1 | Output (+) 2 | Output (-) 3 | Not Connected 4 | AC Input (L) 5 | AC Input (N) 6 | Ground/Earth 7 | Power Supply (+) 8 | Power Supply (-) ``` --- ### 4. Typical Applications 1. **Motor Monitoring:** Converting the AC current draw of a motor into a 4-20mA signal for a Controller. 2. **Power Management:** Providing feedback to energy management systems regarding branch circuit loads. 3. **Electrical Isolation:** Protecting low-voltage control circuits from high-voltage AC power lines.