Pivot-hung door drive system with an electronic controlsystem that contains at least one memory and onemicroprocessor, for an at least single-panel door, the door panelof which is driven by an electro-mechanical drive unit that acts inthe opening and closing directions, whereby the drive unitconsists essentially of a drive motor with a transmission and apower transmission unit for the door connected to it, whereby thepower transmission unit consists of a drive shaft which isconnected with one end of an actuator lever and the pivot-hungdoor drive system is installed inside a door panel or inside adoor frame or casing, and the power transmission unit consists ofa screw with a nut that partly surrounds it, which nut ispositively and non-positively connected to a toothed rack,whereby the drive shaft is engaged with its gear teeth in thegear teeth of the toothed rack.
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