Abstract: The present invention relates to a controlling device of a regulating device of a power window. The controlling device includes at least one computer unit to control an actuator of the regulating device. The computer unit is set up to stop or initiate the stop of an adjusting motion of the actuator if a signal correlating to the rotary moment of the actuator exceeds a current response level. The signal correlating to the rotary moment of the actuator may be the driving power and/or its temporal change, the rotary frequency of the actuator and/or its temporal change and/or a power effecting the actuator and/or its change. The current response level is thereby not a fixed threshold value, but a changing value, which is changeable by the computer unit.