The **MLS-C5W-R** is an electronic component primarily classified as a **Magnetic Proximity Sensor** (often a Reed Switch type) used in industrial automation, pneumatic cylinder position sensing, and security systems. Below is a detailed breakdown of its electronic specifications and features. --- ### 1. General Specifications The MLS-C5W-R is designed to detect the presence of a magnetic field (usually from a piston inside a cylinder) without physical contact. | Feature | Specification | | :--- | :--- | | **Switching Logic** | SPST (Normally Open) | | **Sensor Type** | Reed Switch | | **Operating Voltage** | 5V ~ 240V AC/DC | | **Switching Current** | 100mA Max. | | **Contact Rating** | 10W Max. | | **Voltage Drop** | 2.5V Max @ 100mA DC | | **Indicator** | Red LED | | **Cable Type** | $\phi$ 2.8, 2C, PVC (usually 2 meters) | --- ### 2. Internal Components & Circuitry The device consists of several critical electronic sub-parts: #### A. The Reed Switch The heart of the device. It consists of two ferromagnetic blades hermetically sealed in a glass envelope. When a magnet approaches, the blades pull together to complete the circuit. #### B. LED Indicator Circuit * **LED:** Provides visual feedback when the switch is closed. * **Current Limiting Resistor:** Prevents the LED from burning out at higher voltages (e.g., 24V or 110V). * **Bridge Rectifier (Optional/Model Dependent):** Allows the LED to function regardless of the polarity of the DC input or during AC cycles. #### C. Protection Components * **Varistor/Zener Diode:** Often included to protect the contacts from inductive voltage spikes (EMF) generated when switching solenoid valves. --- ### 3. Wiring Diagram (Simplified) The MLS-C5W-R typically uses a 2-wire configuration. ```markdown [Power + / Load] ----(Brown Wire)---- [ Sensor ] ----(Blue Wire)---- [Power - / Neutral] ``` > **Note:** Since it is a 2-wire sensor, it is wired in **series** with the load (PLC Input or Relay Coil). --- ### 4. Key Applications 1. **Pneumatic Cylinders:** Mounted on the "C-slot" or "T-slot" of an air cylinder to signal when the piston has reached its stroke end. 2. **Limit Switching:** Used in CNC machinery to define safe travel boundaries. 3. **Security:** Detecting the opening/closing of doors or safety guards. ---