Abstract: A method of diagnosing a state of at least one component of a molding machine is performed such that a state of the at least one component is determined on the basis of a vibration measured at the molding machine. A drive unit of the molding machine accelerates and/or decelerates at least one movable element provided at the molding machine in such a way that the vibration is stimulated in a predetermined frequency range.

Abstract: A power supply device for a molding machine with an intermediate circuit, which can be connected with at least one drive of the molding machine and is suitable for supplying the at least one drive with electrical energy; a supply module connected to the intermediate circuit; an energy storage device connected to the intermediate circuit; and a closed loop control device for closed loop controlling an energy content of the energy storage device. The energy storage device can be closed loop controlled by means of the closed loop control device so that the energy content of the energy storage device does not go outside a range, in which a power input and/or a power output of the energy storage device is essentially constant.

Abstract: A power supply apparatus for a shaping machine includes an intermediate circuit to be connected to at least one drive of the shaping machine, a power supply mains, and a power storage device. A measuring device measures an electric voltage or an electric current at the intermediate circuit, and a closed-loop regulating device regulates a power transfer between the power supply mains and the intermediate circuit based on the measured voltage or the measured current. The closed-loop regulating device can increase a main power furnished by the power supply main to the intermediate circuit if the measured voltage or the measured current leaves a first range, and can reduce the main power if the measured voltage or the measured current passes into a second range, the second range being smaller than the first range and completely contained in the first range.

Abstract: A power supply apparatus for a shaping machine includes an intermediate circuit to be connected to at least one drive of the shaping machine, a power supply mains, and a power storage device. A measuring device measures an electric voltage or an electric current at the intermediate circuit, and a closed-loop regulating device regulates a power transfer between the power supply mains and the intermediate circuit based on the measured voltage or the measured current. The closed-loop regulating device can increase a main power furnished by the power supply main to the intermediate circuit if the measured voltage or the measured current leaves a first range, and can reduce the main power if the measured voltage or the measured current passes into a second range, the second range being smaller than the first range and completely contained in the first range.

Abstract: Power supply device for a moulding machine with an intermediate circuit, which can be connected with at least one drive of the moulding machine and is suitable for supplying the at least one drive with electrical energy; a supply module connected to the intermediate circuit; an energy storage device connected to the intermediate circuit, and a closed loop control device for closed loop controlling an energy content of the energy storage device, wherein the energy storage device can be closed loop controlled by means of the closed loop control device so that the energy content of the energy storage device does not go outside a range, in which a power input and/or a power output of the energy storage device is essentially constant.