Abstract: A magnetic actuator having an actuator element, a coil for actuating the actuator element, and a circuit for energizing the coil, the circuit having a supply voltage input to which a supply voltage for energizing the coil is appliable, and the circuit being configured to provide a clocked energization of the coil in a holding current reduction phase and to adapt a duty cycle of the clocked energization as a function of the supply voltage.

Abstract: A field device for controlling actuators and for processing and relaying sensor signals, having a control unit for providing control signals, having a transmission device for transmitting the control signals within the field device, wherein the transmission device comprises at least one interface designed for electrical coupling of a function module, having at least one function module designed as an engine control module, which is equipped for controlling at least one electrical drive depending on control signals from the control unit, wherein the control unit and the function module are electrically connected to each other by means of the transmission device, wherein the transmission device is designed for providing electrical drive energy to the engine control module and wherein the engine control module is designed for providing electrical drive energy to the drive in order to enable operation of the electrical drive with the electrical drive energy.

Abstract: A field device for controlling actuators and for processing and relaying sensor signals, having a control unit for providing control signals, having a transmission device for transmitting the control signals within the field device, wherein the transmission device comprises at least one interface designed for electrical coupling of a function module, having at least one function module designed as an engine control module, which is equipped for controlling at least one electrical drive depending on control signals from the control unit, wherein the control unit and the function module are electrically connected to each other by means of the transmission device, wherein the transmission device is designed for providing electrical drive energy to the engine control module and wherein the engine control module is designed for providing electrical drive energy to the drive in order to enable operation of the electrical drive with the electrical drive energy.