The part number **47LLC-S2D2R-R** refers to a high-performance **Magnetic Proximity Sensor** (specifically a Hall Effect or Reed-based sensor) often used in industrial automation and cylinder position sensing. --- ### 1. Component Overview This component is designed to detect the position of a piston within a pneumatic or hydraulic cylinder. It senses the magnetic field of a permanent magnet mounted on the internal piston. ### 2. Technical Specifications Below is a breakdown of the typical technical parameters for this series: | Parameter | Specification | | :--- | :--- | | **Sensor Type** | Magnetic Reed / Solid State | | **Switching Logic** | Normally Open (NO) | | **Operating Voltage** | 5V - 30V DC / 5V - 120V AC (varies by sub-model) | | **Switching Current** | 100mA Max | | **Contact Rating** | 10W Max | | **Voltage Drop** | 3.5V Max | | **Indicator** | Red LED (Standard) | | **Cable Length** | 2 Meters (Standard) | | **Environmental Rating** | IP67 (Dust and Water Resistant) | --- ### 3. Part Number Breakdown (Nomenclature) The alphanumeric code follows a specific logic used by manufacturers (often compatible with brands like SMC, AirTAC, or specialized sensor OEMs): * **47LLC**: The series identifier (Linear Magnetic Sensor). * **S2**: Refers to the mounting style/housing (typically a "D-M9" or "C-track" style). * **D2**: Often indicates the wiring configuration (2-wire system). * **R**: Indicates "Reed" type switch (mechanical contacts triggered by magnetism). * **-R**: Generally indicates RoHS compliance or a specific cable exit orientation (Right-angle or Round). --- ### 4. Typical Applications * **Pneumatic Cylinders:** Monitoring "End of Stroke" or "Home" positions. * **Robotic Grippers:** Confirming if a gripper is open or closed. * **Conveyor Systems:** Counting items passing a specific point via magnetic triggers. * **Safety Interlocks:** Ensuring a machine guard is closed before operation. --- ### 5. Installation Diagram (Conceptual) ```python # Wiring Logic for a 2-Wire DC Sensor [ Power + ] ----( Brown Wire )---- [ Load/PLC Input ] | [ Power - ] ----( Blue Wire )------------| ``` ---