The **FD-R34EG** is a specific part number typically associated with **Hokuyo** electronic components, specifically a **Fiber Optic Cable** unit used in conjunction with photoelectric sensors. In industrial automation, these parts are critical for sensing objects in tight spaces where a standard sensor body cannot fit. --- ### 1. Technical Specifications The "FD" prefix generally denotes a "Fiber Diffuse" type sensor. Below are the common specifications for this series: | Feature | Specification | | :--- | :--- | | **Detection Type** | Diffuse Reflective (Emitter and Receiver in one head) | | **Fiber Material** | Plastic (typically PFA or Polyethylene jacket) | | **Standard Target** | Opaque and translucent objects | | **Mounting Style** | M3 or M4 Threaded Head (depending on sub-variant) | | **Bending Radius** | R15 - R25 (Standard Flexibility) | | **Operating Temp** | -40°C to +70°C | --- ### 2. Electronic Operating Principle The FD-R34EG does not contain active electronic circuitry inside the cable itself. Instead, it acts as a passive light guide for an **Amplifier Unit** (such as the FX or FS series). 1. **Light Emission:** The amplifier sends an LED signal (Infrared or Red) through the "Emitter" fiber core. 2. **Reflection:** The light exits the FD-R34EG head and hits a target. 3. **Light Reception:** Reflected light enters the "Receiver" fiber core within the same head. 4. **Signal Conversion:** The amplifier converts the returned light intensity into a digital/analog electrical signal (NPN/PNP output). --- ### 3. Application Use Cases Because of its small form factor and "EG" (often denoting enhanced durability or specific sleeve type), it is used in: * **Wafer Detection:** Sensing thin silicon wafers in semiconductor tools. * **Lead Frame Alignment:** Positioning small metal parts in electronics assembly. * **Liquid Level Sensing:** Detecting the presence of fluid in small clear tubes. --- ### 4. Installation Considerations To ensure the electronic signal remains stable, follow these integration rules: ```markdown - Do not bend the fiber cable beyond its rated bending radius; light loss will occur. - Use a dedicated fiber cutter to ensure a clean 90-degree cut for maximum light transmission. - Ensure the fiber tips are clean before inserting them into the amplifier's optical ports. ``` ---