The **W2XR-4V2V3-R/N** is a specialized industrial sensor, typically categorized as a **Color Mark Sensor** or **Registration Mark Sensor**, manufactured by companies like Wenglor. These devices are used in high-speed packaging and printing industries to detect color contrasts. --- ### 1. Technical Specifications The part number indicates specific electronic characteristics regarding its logic, output, and connectivity. | Feature | Specification | | :--- | :--- | | **Sensor Type** | Color Mark / Contrast Sensor | | **Light Source** | White Light (LED) | | **Supply Voltage** | 10...30 V DC | | **Switching Frequency** | High-speed (up to 25 kHz) | | **Output Type** | Push-Pull (Supports both PNP and NPN) | | **Connection Type** | M12 × 1 connector, 4-pin | | **Sensing Range** | Typically 12 mm to 18 mm (focused) | --- ### 2. Key Electronic Components & Functionality #### A. The Optical System * **Transmitter:** Uses a high-intensity white light LED. This allows the sensor to detect a wide range of color combinations between the background and the registration mark. * **Receiver:** A sensitive photodiode array that measures the intensity of the reflected light. #### B. The "Push-Pull" Output Stage The **R/N** in the suffix often denotes the output logic flexibility. * **PNP/NPN Compatibility:** Unlike traditional sensors that are fixed to one logic, Push-Pull outputs can drive loads to the positive rail or the ground, making them compatible with almost any PLC (Programmable Logic Controller) input. * **Response Time:** These sensors have extremely low jitter (approx. 20 µs), which is critical for maintaining cutting accuracy on high-speed conveyor belts. #### C. Interface and Configuration * **Teach-In Button:** Located on the housing, this allows the user to set the threshold electronically. * **External Teach:** One of the 4 pins in the M12 connector is usually reserved for a remote teach-in signal from the PLC. --- ### 3. Application Use Cases * **Packaging:** Detecting the "cut mark" on plastic films or foil to ensure the blade cuts at the correct position. * **Labeling:** Aligning labels on bottles by detecting the gap or a printed mark. * **Printing:** Monitoring color alignment during high-speed offset printing. --- ### 4. Wiring Diagram (Standard M12) | Pin | Color | Function | | :--- | :--- | :--- | | 1 | Brown | +10...30V DC | | 2 | White | Teach-In Input | | 3 | Blue | 0V (GND) | | 4 | Black | Switching Output (Push-Pull) |