A control device (50) and a conveying method for conveying carriers (40 to 49) in a machine (1) are provided. The control device (50) comprises a determining unit (51) for determining the velocity of a carrier (40 to 49) in a first conveying device (10) in which carriers (40 to 49) are conveyed with magnetic force and with variable velocity for each carrier (40 to 49) from a first position to a second position different from the first position, and an evaluating unit (52) for evaluating the velocity of carriers (40 to 49) in a second conveying device (20) in which carriers (40 to 49) are conveyed from a second position to a third position different from the second position, wherein the determining unit (51) is arranged to determine the velocity of each carrier (40 to 49) in the first conveying device (10) on the basis of the evaluation result of the evaluating unit (52) so that the carriers (40 to 49) move continuously between the first and second conveying devices (10, 20). The control device (50) can be part of a conveying system (5) and/or a machine (1).