Motorised driving device for a home automation locking system, the home automation locking system comprising a first screen and a second screen, the motorised drive device comprising: - a first electromechanical actuator, the first electromechanical actuator comprising a first electric motor and being configured to move the first screen, - a second electromechanical actuator, the second electromechanical actuator comprising a second electric motor and being configured to move the second screen, and - an electronic control device, the electronic control device comprising at least one power supply circuit, the power supply circuit comprising at least: - first electrical connection elements, the first electrical connection elements being configured to electrically connect the first electric motor of the first electromechanical actuator to the electrical supply circuit, - second electrical connection elements, the second electrical connection elements being configured to electrically connect the second electric motor of the second electromechanical actuator to the power supply circuit, and - electrical switching elements (K1-1, K1-2, K2-1, K2-2), the electrical switching elements being configured to be switched between an energised state and a rest state, characterised in that the power supply circuit is configured electrically to connect the first and second electric motors head-to-tail via the electrical switching elements, - when the first electric motor is electrically connected to the first electrical connection elements and the second electric motor is electrically connected to the second electrical connection elements, and - when the electrical switching elements (K1-1, K1-2, K2-1, K2-2) are switched to the rest state, and in that the power supply circuit is configured to detect a displacement of at least one of the screens (4a, 4b) from a measurement of the electrical voltage between at least one of the electrical connection elements (K1-1, K1-2, K2-1, K2-2) and a voltage reference of the power supply circuit (Vcc), when the electrical switching elements are switched in the rest state. - a first electromechanical actuator, the first electromechanical actuator comprising a first electric motor and being configured to move the first screen, - a second electromechanical actuator, the second electromechanical actuator comprising a second electric motor and being configured to move the second screen, and - an electronic control device, the electronic control device comprising at least one power supply circuit, the power supply circuit comprising at least: - first electrical connection elements, the first electrical connection elements being configured to electrically connect the first electric motor of the first electromechanical actuator to the electrical supply circuit, - second electrical connection elements, the second electrical connection elements being configured to electrically connect the second electric motor of the second electromechanical actuator to the power supply circuit, and - electrical switching elements (K1-1, K1-2, K2-1, K2-2), the electrical switching elements being configured to be switched between an energised state and a rest state, characterised in that the power supply circuit is configured electrically to connect the first and second electric motors head-to-tail via the electrical switching elements, - first electrical connection elements, the first electrical connection elements being configured to electrically connect the first electric motor of the first electromechanical actuator to the electrical supply circuit, - second electrical connection elements, the second electrical connection elements being configured to electrically connect the second electric motor of the second electromechanical actuator to the power supply circuit, and - electrical switching elements (K1-1, K1-2, K2-1, K2-2), the electrical switching elements being configured to be switched between an energised state and a rest state, - when the first electric motor is electrically connected to the first electrical connection elements and the second electric motor is electrically connected to the second electrical connection elements, and - when the electrical switching elements (K1-1, K1-2, K2-1, K2-2) are switched to the rest state,