The **PV10M-R100** is an industrial-grade **Proximity Sensor** (specifically a Retro-reflective Photoelectric Sensor). These components are widely used in automation for object detection without physical contact. --- ### 1. Key Technical Specifications The following table outlines the primary electronic and operational characteristics: | Feature | Specification | | :--- | :--- | | **Detection Principle** | Retro-reflective (Requires a reflector) | | **Sensing Distance** | Up to 10 Meters (100dm) | | **Output Type** | NPN/PNP (Push-Pull) | | **Operating Voltage** | 10 - 30V DC | | **Light Source** | Red LED (660nm) or Infrared | | **Response Time** | ≤ 1ms | | **Housing Material** | ABS / Polycarbonate | | **Protection Rating** | IP67 (Dust tight and water immersion) | --- ### 2. Core Electronic Components The internal circuitry of the PV10M-R100 consists of three main stages: #### A. The Emitter Stage - **Light Emitting Diode (LED):** Usually a high-intensity Red or Infrared LED. - **Oscillator Circuit:** Pulses the LED at a high frequency (modulated light). This ensures the sensor ignores ambient light (like sunlight or room lamps) and only "listens" to its own frequency. #### B. The Receiver Stage - **Photodiode/Phototransistor:** Captures the light bounced back from the reflector. - **Preamplifier & Filter:** Amplifies the weak signal and filters out noise. - **Demodulator:** Converts the modulated pulses back into a steady DC signal for the logic controller. #### C. The Output Stage - **Comparator:** Decides if the received signal strength is high enough to trigger an "Object Detected" state. - **Switching Transistor:** Usually a **Push-Pull** configuration. - **NPN:** Switches the Load to the Negative rail. - **PNP:** Switches the Load to the Positive rail. --- ### 3. Wiring Configuration The device typically uses a standard 4-wire color code: ```markdown 1. Brown (BN): +V (10-30V DC) 2. White (WH): Complementary Output (NC) 3. Blue (BU): 0V (Ground) 4. Black (BK): Control Output (NO) ``` --- ### 4. Application Logic The **PV10M-R100** operates on the "Light-ON / Dark-ON" principle: 1. **Normal State:** Light travels to the reflector and back to the receiver. 2. **Detection State:** An object breaks the beam. The receiver loses the signal, and the internal transistor flips the output state to signal a "hit" to the PLC (Programmable Logic Controller).