Control device for asynchronous motor of shutter or roller blind

A control device for asynchronous motor (M) with two directions of rotation, used for driving a shutter or roller blind (RB) displacing at least approximately vertically, comprising a control point (CP) equipped with manually actuable Up and Down contacts, the actuation of which causes the rotation of the motor in the desired direction, a control and supply box (CB), containing a logic processing unit (LPU), between the control point and the motor, switching means controlled by the logic processing unit for supplying one or the other of the windings of the motor and means for establishing a direction of rotation of the motor corresponding respectively to the up and down instructions, characterized in that the means for establishing a direction of rotation of the motor comprise means (LPU, CLK, DC) for recognizing the direction of displacement of the shutter or roller blind through the measurement of a quantity representative of the speed of rotation of the motor and, in the logic processing unit, a memory of EEPROM type (MI) for recording the direction of rotation instruction to be issued to the motor in response to an instruction emanating from the control point and a programmed processor for comparing the recognized direction of displacement with the instruction emanating from the control point and for reversing, if necessary, the direction of rotation recorded in respect of this instruction.