The **W2AP-G2A-R2** is a specialized electronic component primarily categorized as an **Isolator** or **Signal Conditioner**. Specifically, it is a **Transducer/Isolator** manufactured by companies like **M-System (MG CO., LTD.)**. It is designed to convert an AC current or voltage input into a standardized DC output signal while providing high galvanic isolation. --- ### 1. General Specifications The W2AP-G2A-R2 is part of the **W2 Series**, known for its ultra-slim design and dual-channel (or split-output) capabilities. | Parameter | Specification Details | | :--- | :--- | | **Model Type** | AC Transmitter (Average Sensing) | | **Input Signal** | AC Current (A) or AC Voltage (V) | | **Output 1** | 4 – 20 mA DC | | **Output 2** | 1 – 5 V DC | | **Power Input** | 24 V DC (Standard for -R2 suffix) | | **Isolation** | 3-way isolation (Input to Output to Power) | | **Accuracy** | ±0.3% to ±0.5% of span | --- ### 2. Key Electronic Features #### A. Input Circuitry * **Average Sensing:** It rectifies an AC input and calculates the average value, which is then calibrated to the RMS (Root Mean Square) for a sine wave. * **Input Impedance:** High impedance for voltage inputs to prevent loading the source; low impedance for current inputs. #### B. Isolation Barrier * **Galvanic Isolation:** Uses optical or magnetic coupling to ensure there is no electrical path between the high-voltage field input and the low-voltage PLC/DCS input. This protects sensitive equipment from surges and ground loops. * **Dielectric Strength:** Typically rated for **2000V AC** for 1 minute. #### C. Power Supply (-R2 Suffix) * The **"R2"** designation specifically refers to the power requirement. In this series, "R" usually indicates **24V DC** power supply, which is standard for industrial control panels. --- ### 3. Application Use Cases 1. **Motor Monitoring:** Converting the AC current from a motor lead into a 4-20mA signal for a PLC to monitor load conditions. 2. **Power Grid Interfacing:** Scaling down 110V/220V AC line voltage into a 1-5V DC signal for data loggers. 3. **Noise Reduction:** Breaking ground loops in complex industrial environments where the sensor and the controller are at different ground potentials. --- ### 4. Terminal Configuration (Generic) | Terminal No. | Function | | :--- | :--- | | 1 - 2 | Output 1 (+) / (-) | | 3 - 4 | Output 2 (+) / (-) | | 5 - 6 | Power Supply (24V DC) | | 7 - 8 | AC Input Signals | ---