The **SVB-C9-R/K** is a specialized electronic component, typically categorized as a **Vibration Sensor** or **Seismic Switch** often used in industrial machinery, elevators, or safety systems to detect excessive mechanical vibration or tilt. Below is a breakdown of its technical specifications and electronic characteristics. --- ### 1. General Specifications The "R/K" designation often refers to specific mounting or reset configurations (e.g., Manual vs. Automatic reset). | Feature | Specification | | :--- | :--- | | **Type** | Vibration/Seismic Displacement Sensor | | **Operating Voltage** | Typically 24V DC or 100-220V AC (model dependent) | | **Contact Output** | Relay Contact (SPDT or DPDT) | | **Reset Method** | Manual (R) or Automatic (K) configurations | | **Sensitivity Range** | Adjustable (Gal or mm/s²) | --- ### 2. Core Electronic Components The internal architecture of the SVB-C9 series generally consists of the following electronic blocks: #### A. Sensing Mechanism * **Mass-Spring System:** Many versions use a weighted pendulum or a spring-loaded mass. When vibration exceeds a certain threshold, the mass moves, triggering a mechanical or optical switch. * **Accelerometers (Digital Versions):** High-end variants may use a MEMS (Micro-Electro-Mechanical Systems) accelerometer to convert physical motion into an electrical signal. #### B. Signal Processing Circuitry * **Comparator/Threshold Logic:** Analyzes the input from the sensor. If the G-force (Gal) exceeds the preset limit, the circuit triggers the output relay. * **Time Delay Circuit:** Prevents "nuisance tripping" caused by momentary shocks or minor bumps that do not represent a sustained vibration hazard. #### C. Output Stage * **Dry Contact Relay:** The primary electronic interface. This allows the sensor to be integrated into a larger Control Panel or Emergency Power Off (EPO) circuit. * **Status LEDs:** Usually includes a Green (Power/Normal) and Red (Alarm/Tripped) LED indicator. --- ### 3. Wiring and Integration The electronic interface usually follows a standard industrial pinout: ```yaml Pin 1: Power Input (+) Pin 2: Power Input (-) Pin 3: Common (COM) Pin 4: Normally Open (NO) - Closes upon vibration detection Pin 5: Normally Closed (NC) - Opens upon vibration detection ``` ### 4. Typical Applications 1. **Elevator Safety:** To stop the elevator car during a seismic event (Earthquake). 2. **Cooling Towers:** To shut down fans if a blade becomes unbalanced. 3. **Industrial Boilers:** To cut fuel supply in the event of a structural impact or collapse. ---