A motorized beverage machine having a brewing unit that comprises a first assembly and a second assembly cooperating together, each assembly delimiting part of a brewing chamber for containing an ingredient capsule, at least one of said assemblies being: - movable away from the cooperating assembly into an open position within said machine for forming between said assemblies a passage for inserting into and/or removing from the brewing unit said ingredient capsule; and - movable to the cooperating assembly into a closed position for forming said brewing chamber, such machine comprising activation means including: - a motor for driving said movable assembly between said open and closed positions; - a transmission means for transmitting a drive action from the motor to the movable assembly; - water supply means for supplying heated water to the brewing chamber; and - control means for controlling the drive action of the motor, characterised in that the control means comprise: - means for measuring at least one electrical parameter representative of a consumption of power by the motor, optionally the at least one measured parameter representing the current absorption of the motor; - means for comparing to a set reference (40,41) an evolution of said measured parameter as a function of time during the transfer of the assembly from the open to the closed position; and - means for providing to at least one of said activation means an input resulting from the comparison of the evolution of said measured parameter to the set reference, and in that a safety input is provided to the motor when detecting a variation of the measured parameter relative to the set reference (40,41) which is abnormal, the variation being deemed abnormal when the measured parameter corresponds to a resistance against closure caused by the presence of an obstacle, in particular a human body part such as a finger, inbetween the assemblies moving towards the closed position and prior to reaching thereof. - movable away from the cooperating assembly into an open position within said machine for forming between said assemblies a passage for inserting into and/or removing from the brewing unit said ingredient capsule; and - movable to the cooperating assembly into a closed position for forming said brewing chamber, - a motor for driving said movable assembly between said open and closed positions; - a transmission means for transmitting a drive action from the motor to the movable assembly; - water supply means for supplying heated water to the brewing chamber; and - control means for controlling the drive action of the motor, - means for measuring at least one electrical parameter representative of a consumption of power by the motor, optionally the at least one measured parameter representing the current absorption of the motor; - means for comparing to a set reference (40,41) an evolution of said measured parameter as a function of time during the transfer of the assembly from the open to the closed position; and - means for providing to at least one of said activation means an input resulting from the comparison of the evolution of said measured parameter to the set reference,