The **M2UDS2-16D-R2/CE** is a high-performance **Magnetic Proximity Sensor** manufactured by **Azbil (formerly Yamatake)**. It is primarily used in industrial automation to detect the position or movement of cylinders or actuators through a magnetic field. --- ### 1. Key Technical Specifications The following table outlines the core electronic and physical parameters of the device: | Feature | Specification | | :--- | :--- | | **Sensor Type** | Magnetic Reed / Proximity Switch | | **Output Type** | 2-Wire (Current switching) | | **Operating Voltage** | 10 to 30 VDC | | **Load Current** | 5 to 20 mA | | **Internal Voltage Drop** | 4.0 V or less | | **Indicator Light** | Red LED (Lights up when detected) | | **Enclosure Rating** | IP67 (Dust-tight and water-resistant) | | **Cable Length** | 2.0 Meters (Standard) | --- ### 2. Electronic Component Breakdown #### A. The Sensing Element (Magnetic Reed/Hall Effect) The "D" in the part number typically signifies a **2-wire DC** configuration. It contains a solid-state or reed-based sensing element that reacts to the magnetic field of a piston magnet within a pneumatic cylinder. #### B. The Indicator Circuit The device features a built-in **LED indicator**. This is electronically integrated in series or parallel with the output circuit to provide visual confirmation of the switching state without needing an external test meter. #### C. Protection Circuitry * **Reverse Polarity Protection:** Prevents damage if the positive and negative wires are swapped during installation. * **Surge Absorption:** Protects the internal electronics from high-voltage spikes (EMF) often found in industrial environments. --- ### 3. Wiring Configuration As a 2-wire DC device, it is wired in series with the load (such as a PLC input or a small relay). ```mermaid graph LR Power_Supply(+) --- Sensor Sensor --- Load/PLC_Input Load/PLC_Input --- Power_Supply(-) ``` --- ### 4. Application Context * **Cylinder Positioning:** Specifically designed to fit into the T-slots or tie-rod grooves of pneumatic cylinders. * **Feedback Loops:** Used to signal a PLC that a mechanical stroke is complete. * **Durability:** The "CE" designation indicates compliance with European safety, health, and environmental protection requirements.