The **W2RS-0C2-R2/Q** is a high-precision, industrial-grade **Current Transducer (Signal Conditioner)** manufactured by **M-System** (now part of MG CO., LTD). It is primarily used to convert alternating current (AC) into a standardized DC signal for use in PLC, DCS, or monitoring systems. --- ## 1. Technical Specifications The following table outlines the core electronic characteristics of the W2RS-0C2-R2/Q: | Parameter | Specification | Details | | :--- | :--- | :--- | | **Model Type** | W2RS | Two-wire / Dual-output Signal Conditioner | | **Input Signal** | 0 – 5A AC | Standard CT (Current Transformer) secondary input | | **Output 1** | 4 – 20mA DC | Standard process control signal | | **Output 2** | 4 – 20mA DC | Independent secondary output | | **Power Supply** | 24V DC | Ripple 10% p-p max. | | **Accuracy** | ±0.3% | Relative to the input span | | **Response Time** | ≤ 0.5 sec | Time to reach 90% of final value | | **Insulation Resistance** | 100 MΩ | Measured at 500V DC | --- ## 2. Component Features The device is engineered for reliability in harsh electrical environments. Key electronic features include: ### A. RMS Sensing Unlike basic rectifiers, this unit uses **True RMS** sensing. This allows it to accurately measure current even if the waveform is distorted by non-linear loads (like Variable Frequency Drives). ### B. Isolation Technology The unit features **triple isolation**: 1. **Input to Output:** Protects sensitive PLC cards from high-voltage surges on the current line. 2. **Output to Output:** Ensures the two 4-20mA signals do not interfere with each other. 3. **Power to Ground:** Prevents ground loops. ### C. Construction & Mounting * **Housing:** Flame-resistant resin (Black). * **Terminal Blocks:** M3.5 screw terminals (nickel-plated steel). * **Mounting:** Standard DIN rail or wall mounting. --- ## 3. Wiring Configuration The `/Q` suffix usually indicates a specific factory setting or a specialized option (like conformal coating or specific labeling). Below is a typical wiring logic for the W2RS series: ```text Input (AC) Output 1 (DC) Output 2 (DC) [1] --- (+) [5] --- (+) [7] --- (+) [2] --- (-) [6] --- (-) [8] --- (-) Power Supply (24V DC) [9] --- (+) [10] -- (-) ``` --- ## 4. Application Use Case This part is typically used in **Power Distribution Centers**: * **Monitoring:** Taking a 5A signal from a large Current Transformer (CT) installed on a high-voltage busbar. * **Redundancy:** Providing one 4-20mA signal to a local digital display and a second 4-20mA signal to a remote SCADA system simultaneously.