The **LCS-122-R** is a specific model of a **Limit Switch**, typically utilized in industrial automation, machinery, and door interlock systems. It belongs to a category of electromechanical components designed to detect the physical presence or position of an object. --- ### 1. Technical Specifications The following table outlines the general electronic and mechanical characteristics typical of this component series: | Parameter | Specification | | :--- | :--- | | **Contact Configuration** | SPDT (Single Pole Double Throw) | | **Switching Function** | On-(On) / Momentary | | **Current Rating** | Usually 0.1A to 5A (depending on voltage) | | **Voltage Rating** | 125V AC / 250V AC | | **Actuator Type** | Short Roller Lever | | **Termination Style** | PCB Terminals / Solder Pins | --- ### 2. Core Electronic Components The device operates through a simple but precise internal mechanism: * **Actuator (Roller Lever):** The "R" in the part number often denotes the **Roller** lever. This is the mechanical interface that physical objects press against to trigger the switch. * **Contacts (Silver/Gold Plated):** Inside the housing are three main terminals: 1. **COM (Common):** The input terminal. 2. **NO (Normally Open):** The circuit is open until the lever is pressed. 3. **NC (Normally Closed):** The circuit is closed until the lever is pressed. * **Snap-Action Spring:** A high-precision spring mechanism ensures that when the lever reaches a specific "trip point," the contacts snap instantly from one position to the other to prevent electrical arcing. --- ### 3. Application Use-Cases In electronic systems, the LCS-122-R is used for: 1. **End-Stop Detection:** In 3D printers or CNC machines to tell the controller that an axis has reached its limit. 2. **Safety Interlocks:** Ensuring a machine panel or door is closed before allowing the circuit to energize. 3. **Object Sensing:** Detecting when a product on a conveyor belt passes a certain point. --- ### 4. Circuit Diagram Representation In a schematic, the part is represented as follows: ```text [COM] / (NC) o o (NO) ``` * **Idle State:** COM is connected to NC. * **Actuated State:** COM moves to connect with NO.