The **M2UDS-5W2-R2/CE** is a high-performance, compact digital indicator and signal conditioner manufactured by **M-System** (now part of MG CO., LTD). It is primarily used for converting DC input signals into various analog outputs while providing a local digital display. Below is a detailed breakdown of its electronic specifications and features. --- ### 1. Model Code Breakdown Understanding the specific suffix of this part number is crucial for identifying its electronic configuration: | Component | Code | Specification | | :--- | :--- | :--- | | **Series** | M2UDS | Universal Digital Indicator (M2 Series) | | **Input** | 5 | 4 to 20 mA DC | | **Output** | W2 | Dual Output: 4 to 20 mA DC (Output 1 & 2) | | **Power Input** | R2 | 11 to 27 V DC | | **Standards** | /CE | CE Marking compliant | --- ### 2. Core Electronic Specifications This device acts as both a **signal isolator** and a **converter**. | Feature | Technical Detail | | :--- | :--- | | **Input Impedance** | 250 $\Omega$ (for 4–20mA input) | | **Output Load Resistance** | Max 300 $\Omega$ | | **Display Type** | 4-digit, 7-segment LED (Red) | | **Accuracy** | $\pm$0.1% of span | | **Response Time** | $\leq$ 0.5 seconds (0 to 90%) | | **Isolation** | 4-way isolation (Input to Output 1 to Output 2 to Power) | | **Dielectric Strength** | 2000V AC @ 1 minute | --- ### 3. Key Electronic Features #### A. Quad-Isolator Technology The "4-way isolation" is a critical electronic safety feature. It prevents ground loops and protects sensitive PLC/DCS cards by electrically separating the input signal, both output channels, and the power supply from one another. #### B. Microprocessor-Based Scaling The device contains internal logic that allows the user to scale the digital display. For example, a 4–20mA input can be programmed to display 0.0 to 100.0% or custom engineering units (e.g., liters, pressure) without affecting the analog output signal. #### C. Dual Output (Splitter Function) The "W2" designation indicates this part acts as a signal splitter. It takes one loop input (4-20mA) and provides two independent 4-20mA outputs. This is useful for sending one signal to a local controller and the other to a central SCADA system. --- ### 4. Installation & Wiring The unit is designed for DIN rail mounting and utilizes M3 screw terminals. * **Terminals 1 & 2:** Power Input (11–27V DC). * **Terminals 5 & 6:** Input Signal (4–20mA). * **Terminals 7 & 8:** Output 1 (4–20mA). * **Terminals 9 & 10:** Output 2 (4–20mA). ---