The **M2AC-AAZ-R2** belongs to the M2AC series of signal conditioners (transducers) manufactured by **M-System**. These devices are designed to convert an alternating current (AC) input into a standard instrumentation DC output signal. --- ### 1. Model Code Breakdown The model number provides specific details regarding its electronic configuration: | Code Segment | Description | Specific Detail | |:---|:---|:---| | **M2AC** | Model Series | AC Input Signal Conditioner | | **-A** | Input Type | 0 – 1A AC | | **A** | Output Type | 4 – 20mA DC | | **-Z** | Power Supply | 200 – 240V AC | | **R2** | Design Revision | Standard Specification (RoHS compliant) | --- ### 2. Key Electronic Specifications The internal circuitry is designed for industrial environments, focusing on isolation and precision conversion. * **Input Impedance:** Approximately 0.1 VA. * **Operational Method:** Average sensing, RMS calibrated. It rectifies the AC input and filters it to provide a DC output proportional to the average value of the waveform. * **Isolation:** 4-way isolation (Input to Output to Power to Ground). This protects sensitive PLCs or controllers from high-voltage surges on the input line. * **Response Time:** $\leq$ 0.5 seconds (0 – 90%). * **Accuracy:** $\pm$0.3% of span. --- ### 3. Component Interface & Wiring The unit is typically housed in a plug-in socket for easy maintenance without disconnecting wires. #### Connection Diagram (Standard) ```text [Input Side] [Power Side] [Output Side] Terminals 1 & 8 <-- Terminals 4 & 5 --> Terminals 2(+) & 3(-) (AC 0-1A) (200-240V AC) (4-20mA DC) ``` --- ### 4. Application Context The electronics of the M2AC-AAZ-R2 are commonly used to interface between a **Current Transformer (CT)** and a **Control System (PLC/DCS)**. * **The CT** steps down a large motor current to a 0-1A range. * **The M2AC** converts that 0-1A AC signal into a linear 4-20mA DC signal. * **The PLC** reads the 4-20mA to monitor motor health or load status. ---