Sliding gate operator limit sensor – Magnetic mechanism

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Sliding gate operator limit sensor - Magnetic mechanism

A sliding gate operator limit sensor, often a limit switch, is a crucial component that signals the gate operator when the gate has reached its fully open or fully closed position, stopping the motor and preventing over-travel. These sensors ensure the gate stops at the correct positions, preventing damage to the gate and surrounding structure. 
Here's a more detailed explanation:
  • Function:
    Limit sensors, like limit switches, detect when the gate reaches its extreme open or closed positions. 
  • How it works:
    When the gate reaches the limit, the sensor sends a signal to the gate operator's control board, which then stops the motor. 
  • Importance:
    Without limit sensors, the gate might continue to move, potentially hitting the end posts or other obstructions, causing damage. 
  • Types:
    Common types include magnetic limit switches and photoelectric sensors (photo eyes). 
  • Magnetic Limit Switches:
    These utilize magnets placed on the gate and a magnetic sensor on the operator. When the magnet aligns with the sensor, it triggers the limit switch. 
  • Photoelectric Sensors (Photo Eyes):
    These use infrared beams to detect obstructions. When the beam is broken (e.g., by the gate), the sensor signals the operator to stop. 
  • Installation:
    Proper installation and adjustment of limit sensors are crucial for the reliable operation. 
  • Maintenance:
    Regular inspection and maintenance of limit sensors are recommended, as they can wear out or become misaligned over time.