With a high-efficiency magnetic coil
The turnstile manufacturer required a system capable of instantly stopping and locking the arm in the event of an attempted intrusion, ensuring that the access point was fully and securely blocked. At the same time, to comply with safety requirements for public areas, the system had to release the passage automatically in the event of a power failure, allowing rapid evacuation in an emergency. The existing electromechanical actuator solutions, which involved high assembly costs, provided neither sufficiently effective locking nor adequate release times. In addition, installation inside a metal tube, with limited space for heat dissipation, caused noticeable overheating of the turnstile’s outer structure.
The solution developed by Telcomec was based on a standard GDRC-F series electromagnetic tooth clutch, specially adapted to operate as a brake. The coil body, equipped with two power lead wires, was secured to a plate to convert torque transmission into a motion-locking function. To meet the installation constraints, a special high-efficiency magnetic coil with low heat generation was also designed, providing high locking torque. When energised, the brake locks the arm. When the power supply is removed, it disengages automatically, leaving the passage clear in an emergency.
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