Barrier balancing state adjustment method
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In the layout of the ground coil, cut a 10cm deep, 2X0.8M square nest, and cut the four corners into a 45-degree bevel (as shown in the figure on the right). Place the coil (1mm square) into a circle. , put a total of 3-5 laps, the coil must be pressed between each layer, there is no joint in the coil. The inductive coil output is twisted to the barrier, and the distance is as short as possible. After the connection is completed, the nest is sealed with dry cement. Note: High-temperature copper conductors with a cross-sectional area of ​​0.5-1.5 mm 2 for the ground coil, the influence of the cross-sectional area on the induction strength is not significant.
After the induction coil is energized, the coil will produce low-frequency oscillations. When a metal enters the coil, the magnetic field is weakened by the magnetic sensor and the magnetic field is weakened, resulting in a corresponding action. The induction strength of the induction coil has a great relationship with the number of turns of the coil and the shape of the coil. The number of turns in the coil is too large to cause a large inductive reactance, resulting in an open circuit; too few turns in the input have a small inductance and cause a short circuit. In both cases, the working indicator of the magnetic sensor will flash rapidly. The general number of turns is 3-5 turns.
When the brake is commissioned, it will be short-circuited between "up" and "ground", and the brake lever will automatically start and the gate will be normal.
Connect the card reader with 8-core shielded wire according to the drawing. Be careful not to break the wire when wiring.
The controller power supply is DC 12V. Be careful not to make mistakes.
The sense coil is installed below the barrier, and the distance from the barrier to the reader is 3-5 meters.