Abstract: An arrangement for synchronizing printing presses and additional components, in which arrangement a printing press and/or an additional component form/forms a unit and are/is connected to further units, and the drives of the connected units are synchronized, the units having either AC drives and/or DC drives and being synchronized internally via synchronism regulators in the case of an AC drive and via at least one drive shaft in the case of a DC drive. For the synchronization of the units which are to be connected, at least one additional synchronism regulator is attached to at least one unit, all synchronism regulators of all units being connected to one another and being adapted to a setpoint value of the connected units.

Abstract: A method for the control of a feed mechanism of a web-fed printing press, i.e., for the control of tensile stress and/or web tension of a printing material web to be taken into the printing unit by the feed mechanism, wherein thereby an actual value is compared with a desired value. According to the discrepancy between the actual value and the desired value, a control device for the tensile stress and/or the web tension produces a correcting variable for the feed mechanism. The actual value of the tensile stress and/or the web tension is determined by calculation based on a model.

Abstract: An arrangement for synchronizing printing presses and additional components, in which arrangement a printing press and/or an additional component form/forms a unit and are/is connected to further units, and the drives of the connected units are synchronized, the units having either AC drives and/or DC drives and being synchronized internally via synchronism regulators in the case of an AC drive and via at least one drive shaft in the case of a DC drive. For the synchronization of the units which are to be connected, at least one additional synchronism regulator is attached to at least one unit, all synchronism regulators of all units being connected to one another and being adapted to a setpoint value of the connected units.

Abstract: A method for regulating a reel changer of a web-fed press includes having a current controller and a rotational speed controller connected to the current controller as a cascade control, and a position controller for positioning a dancer roller connected to the rotational speed controller to effect a further cascade. The method includes deactivating the position controller of the dancer roll and feeding a differentiated set point of the rotational speed controller to the output variable of the rotational speed controller as a feedforward control component during a reel change and, after the reel change has been performed, activating the position controller of the dancer roll and feeding a differentiated actual value of the position controller to the output variable of the rotational speed controller as a feedforward control component.