The **M2UDS-F0-R/CE** is a high-precision digital computing unit belonging to the **M2 Series** of signal conditioners manufactured by **M-System**. It is specifically designed for industrial automation to perform mathematical operations on DC input signals. --- ### ## Technical Specifications Overview | Feature | Specification | | :--- | :--- | | **Model** | M2UDS-F0-R/CE | | **Input Type** | 4 – 20 mA DC | | **Output Type** | 4 – 20 mA DC | | **Power Input** | 24V DC | | **Functions** | Square Root Extraction, Linear, etc. | | **Accuracy** | ±0.1% | | **Response Time** | ≤ 0.5 seconds (0 – 90%) | | **Construction** | Plug-in style | | **Certification** | CE Marking | --- ### ### Key Electronic Components & Functions 1. **Input Conditioning Section:** * Receives the standard 4–20 mA current loop. * Uses a high-precision shunt resistor to convert current into a measurable voltage. * Includes surge protectors to shield the internal circuitry from spikes. 2. **Computing Logic (Digital Processor):** * The "F0" designation refers to the function. This unit typically performs **Square Root Extraction**. This is essential for flow measurement where the differential pressure is proportional to the square of the flow rate. * The digital microprocessor ensures zero drift and high linearity compared to older analog computing modules. 3. **Output Driver:** * Converts the processed digital value back into an isolated 4–20 mA analog signal. * Designed to drive loads up to 550 $\Omega$. 4. **Galvanic Isolation:** * Provides 3-way isolation (Input to Output to Power). * This prevents ground loops and protects sensitive PLC/DCS inputs from field-side electrical noise. --- ### ### Terminal Configuration | Terminal No. | Connection | Function | | :--- | :--- | :--- | | **1** | Output (+) | Positive Analog Output | | **2** | Output (-) | Negative Analog Output | | **4** | Power (U) | +24V DC Supply | | **5** | Power (V) | 0V DC Supply | | **7** | Input (+) | Positive Current Input | | **8** | Input (-) | Negative Current Input | --- ### ### Installation & Wiring Code Breakdown * **M2UDS:** Model Series (Digital Computing Unit). * **F0:** Square Root Extraction (Standard). * **R:** Power Input (24V DC). * **CE:** European Conformity (Safety and EMC standards).