DRIVE AND CONTROL SYSTEM FOR LIFTING GATES

摘要

The present invention provides a drive unit for high-speed lifting gates in which a drive motor is provided for moving the gate leaf and can be down-regulated up to zero rotational speed. The drive motor is actuated via a control unit. Following the occurrence of an emergency stop condition, the drive motor is actuated such that its rotational speed is reduced to zero in a controlled manner and the gate leaf is thereby braked in a motor-driven manner. When the gate leaf is at a standstill, the gate leaf is held by the energized drive motor at zero rotational speed at the holding position. It is with an emergency power supply ensured that, also in the event of a power failure, motor-driven deceleration of the gate leaf and an emergency opening can occur.

主权项

1. Drive and control system for a lifting gate with a vertically moved gate leaf, comprising:
a drive motor connectable to said gate leaf and adapted to vertically move said gate leaf, a control unit for actuating said drive motor, and a power regulating unit for regulating said drive motor, characterized in that said drive motor can be down-regulated up to zero rotational speed, said control unit is upon the occurrence of a stop condition adapted to actuate said drive motor such that its rotational speed is reduced in a controlled manner and said gate leaf is thereby braked in a motor-driven manner, where said drive motor is configured to provide sufficient torque at zero rotational speed to hold said gate leaf at a current position, and where said control system is configured to ensure this also during power failure.