Control facility for controlling a controlled system, - wherein the control facility has a front node, a back node, an external tapping point arranged between the front and the back node (2, 3), a controller and a compensating circuit, - wherein the compensating circuit has an inner node, a frequency filter, a front buffer and a back buffer, - wherein the front node receives an actual value (x) detected at the output of the controlled system by means of a measuring device, and a corresponding desired value (x*), and determines a control difference (δx) by forming the difference thereof, - wherein the back node receives the control difference (δx) and a compensation signal and supplies the controller with an external sum signal formed by adding control difference (δx) and compensation signal, - wherein, using the external sum signal, the controller determines a control signal for the controlled system and outputs it to the controlled system, - wherein the inner node forms an internal sum signal by adding the control difference (δx) tapped at the external tapping point and weighted with a first weighting factor (γ), and a feedback signal weighted with a second weighting factor (β), and supplies it to the frequency filter, - wherein the frequency filter carries out a frequency filtering and supplies the filtered signal (sF) to the front buffer, - wherein the front buffer delays the filtered signal (sf) by a first propagation delay and outputs the correspondingly delayed signal (sv) as an output signal (sv), - wherein the back buffer delays the compensation signal by a second propagation delay and outputs the correspondingly delayed signal as a feedback signal, - wherein, during normal operation of the control facility, the output signal (sv) of the front buffer is used as the compensation signal, characterised in that the control facility has a setting device and that in a setting mode of the control facility the setting device automatically - suppresses use of the output signal (sv) of the front buffer as the compensation signal, - supplies the back buffer and the back node with an excitation signal (u) as the compensation signal instead, - detects a result signal (e) produced by the excitation signal (u), wherein the result signal (e) is the control difference (δx), the internal sum signal, the output signal (sf) of the frequency filter or the output signal (sv) of the front buffer, and - based on an evaluation of the excitation signal (u) and the result signal (e), sets at least one parameter of the frequency filter and the second propagation delay. - wherein the control facility has a front node, a back node, an external tapping point arranged between the front and the back node (2, 3), a controller and a compensating circuit, - wherein the compensating circuit has an inner node, a frequency filter, a front buffer and a back buffer, - wherein the front node receives an actual value (x) detected at the output of the controlled system by means of a measuring device, and a corresponding desired value (x*), and determines a control difference (δx) by forming the difference thereof, - wherein the back node receives the control difference (δx) and a compensation signal and supplies the controller with an external sum signal formed by adding control difference (δx) and compensation signal, - wherein, using the external sum signal, the controller determines a control signal for the controlled system and outputs it to the controlled system, - wherein the inner node forms an internal sum signal by adding the control difference (δx) tapped at the external tapping point and weighted with a first weighting factor (γ), and a feedback signal weighted with a second weighting factor (β), and supplies it to the frequency filter, - wherein the frequency filter carries out a frequency filtering and supplies the filtered signal (sF) to the front buffer, - wherein the front buffer delays the filtered signal (sf) by a first propagation delay and outputs the correspondingly delayed signal (sv) as an output signal (sv), - wherein the back buffer delays the compensation signal by a second propagation delay and outputs the correspondingly delayed signal as a feedback signal, - wherein, during normal operation of the control facility, the output signal (sv) of the front buffer is used as the compensation signal, - suppresses use of the output signal (sv) of the front buffer as the compensation signal, - supplies the back buffer and the back node with an excitation signal (u) as the compensation signal instead, - detects a result signal (e) produced by the excitation signal (u), wherein the result signal (e) is the control difference (δx), the internal sum signal, the output signal (sf) of the frequency filter or the output signal (sv) of the front buffer, and - based on an evaluation of the excitation signal (u) and the result signal (e), sets at least one parameter of the frequency filter and the second propagation delay.