The **FUD-FW3-R/Q** is a high-performance, dual-beam photoelectric sensor (typically a fiber-optic amplifier or specific sensor head) designed for industrial automation. It is commonly used for detection tasks requiring high precision and resistance to harsh environments. --- ### 1. Technical Specifications The following table outlines the core electronic and mechanical parameters for this series: | Parameter | Specifications | | :--- | :--- | | **Sensing Method** | Reflective / Through-beam (depending on fiber head) | | **Light Source** | Red LED (Visible) or Infrared | | **Response Time** | 50 µs (High Speed) to 2 ms (Standard) | | **Output Type** | NPN or PNP Open Collector (model specific) | | **Operating Voltage** | 12 - 24V DC ±10% | | **Current Consumption** | < 40 mA | | **Protection Circuit** | Reverse polarity, Overcurrent, Surge suppression | --- ### 2. Key Electronic Features #### A. Dual Digital Display The "Q" and "R" series often feature a dual-monitor system. - **Current Value:** Shows the real-time received light intensity. - **Set Value (Threshold):** Shows the user-defined limit for triggering the output. #### B. High-Speed Sampling The electronic circuitry is optimized for high-speed production lines. With response times as low as **50 microseconds**, it can detect small objects moving at high velocities without signal "jitter." #### C. Signal Stability (APC) The unit includes an **Auto-Power Control (APC)** circuit. This compensates for LED aging or dust accumulation by automatically adjusting the light emission power to maintain a consistent sensing margin. #### D. Interference Prevention The "FW" designation often implies advanced frequency modulation. This allows multiple sensors to be mounted side-by-side without optical cross-talk, as each unit alternates its pulse frequency. --- ### 3. Connection Diagram (Standard NPN Example) To integrate the sensor into a PLC or controller, the following wiring logic is typically used: ```mermaid graph LR A[Brown: +12-24V DC] --- Power B[Blue: 0V / GND] --- Power C[Black: Control Output] --- Load/PLC_Input D[White: External Input/Teach] --- Switch ``` --- ### 4. Environmental Resilience * **EMI/RFI Shielding:** The internal PCB is shielded to prevent malfunctions caused by nearby motors or high-frequency drives. * **Temperature Compensation:** Integrated thermistors adjust the sensitivity threshold based on ambient temperature shifts to prevent "drift."