The **FT-R43** is a specialized fiber optic sensor head manufactured by Keyence. It is part of their "Tough Fiber" series, designed for high-precision detection in industrial automation. Below is an overview of its electronic and physical characteristics. --- ### 1. Technical Specifications The FT-R43 is a **Thrubeam** type fiber unit, meaning it consists of a transmitter and a receiver. | Feature | Specification | | :--- | :--- | | **Model Type** | Thrubeam (Separate transmitter/receiver) | | **Fiber Diameter** | ø1.0 mm × 2 | | **Fiber Length** | 2 meters (standard, free-cut) | | **Minimum Bend Radius** | R1 mm (High-flexibility) | | **Minimum Detectable Object** | ø0.005 mm (Gold wire detection possible) | | **Enclosure Material** | Stainless Steel (SUS304) | --- ### 2. Key Electronic Features #### A. M3 Hex-Shaped Head The "R" in R43 stands for the **hexagonal** shape of the sensor head. This allows for: * **Easy Mounting:** Can be secured directly into a threaded hole using a nut. * **Durability:** The stainless steel housing protects the internal glass or plastic fiber from mechanical stress. #### B. High-Flexibility (R1 Bend Radius) Unlike standard fiber cables that snap or lose signal when bent, the FT-R43 uses a multi-core fiber structure. This allows it to be bent around a radius of **1mm** without significant light loss, making it ideal for robotic arms or tight cabinets. #### C. Optical Performance As a passive electronic component (it does not require its own power source, but rather plugs into an amplifier), its performance depends on the connected **Fiber Optic Amplifier** (e.g., Keyence FS-N series). * **Light Source:** Usually Red LED or Green LED (determined by the amplifier). * **Response Time:** Capable of microsecond response times depending on the amplifier settings. --- ### 3. Installation Logic The FT-R43 must be paired with an amplifier to function. The setup follows this electronic logic: 1. **Light Emission:** The amplifier generates a light signal. 2. **Transmission:** Light travels through the **FT-R43 transmitter** cable. 3. **Reception:** If the beam is not blocked, the **FT-R43 receiver** picks up the light. 4. **Signal Output:** The amplifier converts the optical signal into an electrical output (PNP/NPN). --- ### 4. Application Examples * **Semiconductor Industry:** Detecting the presence of thin wafers. * **Electronics Assembly:** Checking for the presence of tiny screws or components. * **Lead Frame Detection:** High-precision positioning of metal frames.