System for conveying a medium

System for conveying a medium, the system comprising:

• a first working machine;
• and a second working machine;
• wherein the first and second working machines each have at least one carrier shaft with transport elements for the medium to be conveyed upon arranged on the at least one carrier shaft, and at least one drive that sets each of the respective carrier shaft in rotation, wherein the first and second working machines are connected in series, the first working machine is arranged downstream of the medium to be conveyed, a first drive is assigned to the first working machine and a second drive is assigned to the second working machine, and the first and second drives are connected in parallel with each other and connected to a common power supply system, and a driven shaft is coupled with each carrier shaft in a torsionally rigid manner,
• wherein each of the working machine is assigned to a bypass line in order to be able to bypass the respective working machine in the connection in series.