The **W2TS-4AC-R** is a high-performance **Signal Conditioner (Transducer)** manufactured by **M-System**. This specific model is part of the W2-Series and is designed to accept an AC voltage or current input and convert it into two isolated DC output signals. --- ## 1. Technical Specifications The model code `W2TS-4AC-R` can be broken down to understand its internal electronic characteristics: | Code Segment | Description | Specific Detail | | :--- | :--- | :--- | | **W2TS** | Series Name | Dual-output Signal Conditioner | | **4** | Input Type | AC Current / Voltage (True RMS) | | **AC** | Output 1 & 2 | 4–20 mA DC (Standard Configuration) | | **R** | Power Input | 24V DC | ### Key Electronic Ratings * **Accuracy:** ±0.4% of span. * **Response Time:** ≤ 0.5 seconds (0 – 90%). * **Isolation:** 4-way isolation (Input to Output 1 to Output 2 to Power). * **Dielectric Strength:** 2000V AC @ 1 minute. * **Input Impedance:** Approx. 1 MΩ for voltage; approx. 0.1 Ω for current. --- ## 2. Internal Electronic Architecture The device utilizes a sophisticated circuit path to ensure signal integrity in industrial environments: 1. **Input Conditioning (RMS Circuit):** Unlike simple average-sensing transducers, the "4" series uses **True RMS conversion**. This means it can accurately measure distorted sine waves or signals controlled by SCRs. 2. **Galvanic Isolation:** Uses photocouplers or transformer-based isolation to separate the high-voltage AC input side from the low-voltage DC logic and output side. This protects PLC/DCS inputs from surges. 3. **Dual Output Stage:** The "W" in the prefix signifies a "Splitter" function. Internally, the signal is branched into two independent operational amplifier circuits, allowing one signal to go to a local display and the other to a control system. 4. **Zero/Span Adjustment:** Equipped with multi-turn potentiometers accessible on the front panel for fine-tuning the calibration. --- ## 3. Wiring Diagram (Terminal Layout) The unit typically uses a socket-mounted base (8-pin or 11-pin depending on the base model). | Terminal No. | Function | Connection Type | | :--- | :--- | :--- | | **1 & 2** | Input | AC Signal (Voltage/Current) | | **3(+) & 4(-)** | Output 1 | 4–20 mA DC | | **5(+) & 6(-)** | Output 2 | 4–20 mA DC | | **7(+) & 8(-)** | Power Supply | 24V DC | --- ## 4. Application Use Case This part is primarily used in **Power Monitoring** and **Motor Control Centers (MCC)**. For example: * Measuring the current draw of a large AC motor. * Converting that high-voltage AC signal into a safe 4-20mA signal for a PLC. * Providing two outputs: one for a SCADA system and one for a redundant safety trip-switch.