The **W2AC-AA1B-R2/Q** is a specific model within the **W2 Series** of signal conditioners manufactured by **M-System**. These devices are primarily used in industrial automation to provide signal isolation, conversion, and amplification. --- ### 1. Technical Specifications Breakdowns The alphanumeric suffix in the model number defines the specific electronic configuration of the unit: | Component Code | Description | Specifications | | :--- | :--- | :--- | | **W2AC** | **Model Series** | Dual-output signal conditioner (Splitter) | | **-AA** | **Input/Output 1** | Input: 4–20 mA DC / Output 1: 4–20 mA DC | | **1** | **Output 2** | Output 2: 4–20 mA DC | | **-B** | **Power Supply** | 100V – 240V AC (Universal AC power) | | **-R2** | **Design / Version** | Compact plug-in style with specific terminal layout | | **-Q** | **Option Code** | Non-standard or special specifications (often tropicalization or specific labels) | --- ### 2. Core Electronic Functions The device operates as an **Active Signal Splitter**. Its internal circuitry performs three primary electronic tasks: 1. **Isolation (Galvanic):** It provides 2000V AC isolation between the input, output 1, output 2, and power supply. This prevents ground loops from damaging sensitive PLCs or DCS systems. 2. **Signal Conversion:** It takes one analog current loop (4-20mA) and mirrors it into two independent, isolated loops. 3. **Power Regulation:** The internal switching power supply converts the 100-240V AC mains into stabilized DC voltages required for the internal operational amplifiers and optoisolators. --- ### 3. Connection Diagram (General) The unit typically uses a **socket-mounted** design. The wiring logic follows this pattern: ```text Input (+) ---- [ Terminal 5 ] Input (-) ---- [ Terminal 6 ] Output 1 (+) -- [ Terminal 1 ] Output 1 (-) -- [ Terminal 2 ] Output 2 (+) -- [ Terminal 3 ] Output 2 (-) -- [ Terminal 4 ] Power (L) ---- [ Terminal 7 ] Power (N) ---- [ Terminal 8 ] ``` --- ### 4. Key Electronic Characteristics * **Response Time:** Approximately $\le$ 0.5 seconds (0 to 90%). * **Accuracy:** Within $\pm$0.1% of the span. * **Load Resistance:** * Output 1: Up to 750 $\Omega$. * Output 2: Up to 350 $\Omega$. * **Insulation Resistance:** 100 M$\Omega$ minimum at 500V DC.