Safety Sensor & Loop Issues

If your gate stops before closing, reverses for no reason, or stays open indefinitely, chances are the problem lies with your safety sensors or loop detectors. These components are essential to the safe operation of your automatic gate system, and when they fail, your gate’s reliability and safety are compromised.

At A.S. Gate and Fence, we specialize in diagnosing and repairing photo-eye sensors and vehicle loop detectors for all types of gates across the Dallas-Fort Worth area. Our technicians ensure your gate not only works, but does so safely and in full compliance with UL-325 safety standards.

Understanding Gate Safety Sensors & Loops

  • Photo-Eye Sensors: These infrared “eyes” detect obstacles like people, pets, or vehicles. If the beam is blocked, the gate stops or reverses to prevent accidents.

  • Loop Detectors: These are installed beneath your driveway and detect metal objects (vehicles). They signal your gate to open or stay open while a car is present.

When either system fails, your gate may refuse to close or open unexpectedly.

Common Sensor & Loop Issues We Repair

  1. Dirty or Misaligned Sensors
    Dust, insects, or misalignment can interrupt the infrared beam, tricking your gate into thinking something’s in the way. We clean and realign sensors for proper function.

  2. Damaged or Corroded Wiring
    Exposure to moisture or pests can corrode or break sensor and loop wires. We replace damaged wiring and seal connections for long-lasting reliability.

  3. Failed Loop Detectors
    Over time, the loop’s underground wire can deteriorate or lose calibration. We test loop resistance, repair breaks, and recalibrate detectors to restore full sensitivity.

  4. Sunlight or Weather Interference
    Direct sunlight can cause false readings in older sensors. We reposition and shield sensors to minimize interference and improve accuracy.

  5. Control Board Malfunctions
    The control board interprets signals from your sensors and loops. If it’s not reading properly, your gate might ignore commands. We repair or replace faulty boards to restore communication.

Our Repair & Maintenance Process

  1. System Diagnosis: We test your photo eyes, loops, and control board to identify the fault.

  2. Repair or Replacement: Damaged sensors or loops are replaced with high-quality, weather-rated components.

  3. Calibration & Alignment: We fine-tune detection sensitivity and beam alignment for optimal performance.

  4. Safety Testing: We perform high safety checks to confirm that your gate stops or reverses correctly when obstacles are detected.