Patent ID: 6737823
Filing Date: 2004-05-18
Classification: E06B

Abstract:
A control system for controlling the operation of a door operator unit to move a door between open and closed positions, said operator unit including an electric drive motor, a drive unit interconnecting said drive motor with a door, and an electrically operated brake assembly operably connected to at least one of said drive motor and said drive unit for braking rotation of an output shaft of said drive unit, said control system comprising:a programmable controller operable to receive door open, door close and door stop signals and to provide control signals to said drive motor; a brake control circuit operably connected to said controller and operable to control engagement and release of said brake; and a keypad operably connected to said controller for providing calibration of a selected function controlled by said controller including at least one of a braking rate for applying braking action by said brake assembly to control rotation of said output shaft, a setting for arresting movement of said door between its open and closed positions, a maximum run time of said operator unit to provide at least one of opening and closing said door, and deenergizing said drive motor for a predetermined time commencing with deenergization of said drive motor.