The **SWZ2** typically refers to a specific series of high-precision, industrial-grade **limit switches** or **position sensors**, commonly manufactured by brands like **Azbil (formerly Yamatake)**. These electronic parts are critical for automated machinery and safety systems. --- ## 1. Core Component Specifications The SWZ2 series is designed for durability in harsh industrial environments. Below are the primary technical characteristics: | Feature | Specification | | :--- | :--- | | **Contact Type** | Snap-action or Slow-action | | **Switching Voltage** | 125V AC / 250V AC / 30V DC | | **Operating Force** | Varies by actuator (High precision) | | **Ingress Protection** | Typically IP67 (Dust-tight and waterproof) | | **Material** | Die-cast aluminum or reinforced plastic housing | --- ## 2. Key Internal Electronic Parts The functionality of an SWZ2 switch relies on several internal mechanisms: ### A. Contact Block The heart of the switch. It usually contains gold-plated or silver contacts to ensure low electrical resistance. * **NC (Normally Closed):** The circuit is complete when the switch is at rest. * **NO (Normally Open):** The circuit is open until the actuator is triggered. ### B. Actuator Mechanism The mechanical part that interfaces with the electronic contact. Common types include: * **Roller Lever:** For cam-driven operations. * **Plunger:** For direct linear motion detection. * **Adjustable Rod:** For flexible positioning. ### C. Terminal Block The wiring interface, often featuring screw terminals or M12 connectors, allowing for integration into a PLC (Programmable Logic Controller) circuit. --- ## 3. Circuit Application In an electronic control system, the SWZ2 acts as a **Digital Input (DI)**. When the mechanical arm is moved, it completes or breaks a 24V DC or 110V/220V AC loop, sending a signal to the controller. ### Wiring Logic Example ```json { "Common (COM)": "Input Power", "Normally Closed (NC)": "Safety Stop Circuit", "Normally Open (NO)": "Position Confirmation Signal" } ``` --- ## 4. Common Use Cases 1. **CNC Machines:** To detect the "Home" position of the tool head. 2. **Conveyor Belts:** To detect the presence or passage of a package. 3. **Safety Interlocks:** Ensuring a machine guard is closed before operation begins.