The **FUD-C2-R/Q** is a specific series of high-precision fiber optic sensors (amplifiers), typically manufactured by companies like **Fuji Electric** or associated industrial automation brands. These devices are designed to detect small objects or marks by transmitting and receiving light through fiber optic cables. --- ### 1. Key Technical Specifications Below are the primary electronic and operational characteristics of the FUD-C2-R/Q series: | Feature | Specification | | :--- | :--- | | **Power Supply** | 12 to 24V DC ±10% | | **Current Consumption** | Max 40mA | | **Output Type** | NPN or PNP Open Collector (depending on R/Q suffix) | | **Response Time** | High-speed (approx. 200μs to 500μs) | | **Light Source** | Red LED (visible) or Infrared | | **Sensitivity Adjustment** | Multi-turn Trimmer or Digital Teach-in | | **Connection** | M8 Connector or Pre-wired Cable | --- ### 2. Core Electronic Components The internal circuitry of the FUD-C2-R/Q consists of three main functional blocks: #### A. The Emitter Stage * **LED Driver:** Regulates the current to the light-emitting diode to ensure consistent brightness despite temperature fluctuations. * **Modulator:** Pulses the light at a specific frequency to distinguish the sensor's own light from ambient light interference. #### B. The Receiver Stage * **Photodiode:** Converts incoming photons back into a low-level electrical current. * **Preamplifier/Filter:** Boosts the weak signal from the photodiode and filters out noise that does not match the emitter's modulation frequency. #### C. Signal Processing & Output * **Comparator:** Compares the received signal strength against a set threshold (the "Sensitivity" setting). * **Output Transistor:** An electronic switch (NPN or PNP) that closes the circuit to trigger a PLC or relay when the threshold is met. --- ### 3. Wiring Configuration Typical wiring for these sensors follows industrial standards: ```yaml Brown: +V (12-24V DC) Blue: 0V (Ground) Black: Control Output (Load) Pink: External Teaching / Mode Selection (Optional) ``` --- ### 4. Suffix Variations (R vs. Q) * **R:** Often denotes a **Relay** output or a specific **Red LED** light source with a standard cable. * **Q:** Generally indicates a **Quick-disconnect** M8 or M12 connector type rather than a fixed cable.