The **FVS-K4-R** is a specialized electronic component typically used in automated industrial sensing, specifically within the category of **Fiber Optic Sensors** or **Amplifiers**. It is designed to interface with fiber optic cables to detect objects in tight spaces or harsh environments. --- ### 1. Core Technical Specifications The electronic architecture of the FVS-K4-R is centered around high-speed signal processing and reliability. | Feature | Specification | | :--- | :--- | | **Output Type** | NPN or PNP (Model dependent, "R" often denotes Relay or Receiver) | | **Response Time** | High-speed (Typically < 500μs) | | **Light Source** | Red LED (Visible) or Infrared | | **Operating Voltage** | 12V - 24V DC | | **Connectivity** | M8 Connector or Pre-wired Cable | --- ### 2. Key Electronic Components & Functions The internal circuitry consists of several critical stages: * **Emitter Circuit:** Drives the light source (LED) at a specific frequency to distinguish it from ambient light interference. * **Receiver (Photodiode):** Converts the incoming light signals from the fiber optic cable back into electrical current. * **Signal Amplifier:** Boosts the weak electrical signal from the photodiode to a level that can be processed. * **Sensitivity Potentiometer:** A variable resistor (often a multi-turn trimmer) that allows the user to set the threshold for object detection. * **Logic Controller:** A microprocessor or logic IC that handles the "Light-ON" vs "Dark-ON" switching logic. --- ### 3. Wiring Configuration For most variants of the FVS series, the standard industrial wiring color code applies: | Wire Color | Function | Description | | :--- | :--- | :--- | | **Brown** | VCC | Positive Power Supply (+12/24V) | | **Blue** | GND | Negative / Common Ground (0V) | | **Black** | Output | Control Signal (Load) | | **White/Pink** | Mode | Teach-in or Light/Dark switching | --- ### 4. Application Context The FVS-K4-R acts as the "brain" for fiber optic heads. While the fiber optics are passive (glass or plastic strings), the FVS-K4-R provides the active electronic pulse. It is commonly used in: * **Electronic Assembly:** Detecting small pins or components. * **Packaging:** Counting high-speed items on a conveyor. * **Semiconductor Tools:** Wafer detection where space is limited.