The **M2UDS2-01-R/CE** is a specialized electronic component, specifically a **Plug-in Digital Type Multi-Power Monitor** manufactured by **M-System** (now part of MG CO., LTD). It is designed to measure and monitor various parameters of a power system. --- ### 1. Core Specifications and Electronics The device functions as a high-precision power transducer that converts AC power parameters into digital or analog signals for PLC or SCADA integration. | Feature | Specification | |:---|:---| | **Power Supply** | 100 – 240V AC (Standard for /CE marking) | | **Input Type** | Single-phase, 2-wire / Single-phase, 3-wire / Three-phase, 3-wire | | **Voltage Input** | Up to 480V AC | | **Current Input** | 1A or 5A AC (from CT) | | **Output Type** | Typically Modbus-RTU or Analog (depending on exact suffix) | | **Mounting** | Plug-in base (M2 series style) | --- ### 2. Key Electronic Functions * **Measurement Capabilities:** It monitors Voltage (V), Current (A), Active Power (P), Reactive Power (Q), Apparent Power (S), Power Factor (cos φ), Frequency (Hz), and Active Energy (kWh). * **Signal Processing:** It utilizes an internal Microprocessing Unit (MPU) to perform True RMS (Root Mean Square) calculations, ensuring accuracy even in the presence of harmonic distortion. * **Isolation:** Features high-level galvanic isolation between input, output, and power supply (typically up to 2000V AC). * **Display:** The front panel usually features a digital display (LED or LCD) for local monitoring and configuration. --- ### 3. Part Number Breakdown: M2UDS2-01-R/CE The suffix "R/CE" provides specific information regarding its electrical compliance and power requirements: 1. **M2UDS2:** Model series (Multi-power monitor). 2. **01:** Specifically denotes the configuration (typically 1-point output or specific input range). 3. **R:** Indicates the Power Input is **24V DC**. (Note: While many M2 units are AC, the 'R' code specifically designates 24V DC power supply). 4. **CE:** Indicates the unit meets **European Conformity (CE)** standards for safety and EMC (Electromagnetic Compatibility). --- ### 4. Typical Connection Diagram ```text [ AC Power Line ] --------+-------- [ CT - Current Transformer ] | | v v +-------+-----------------+-------+ | M2UDS2-01-R/CE | +-------+-----------------+-------+ | | [ 24V DC Power ] [ RS-485 Modbus ] ``` ---