Open-end spinning machine, and method and control device for operating an open-end spinning machine of this type

An open-end spinning machine having a plurality of workstations, each of which has:

• a spinning device for producing a thread;
• a thread take-up device for taking up the thread from the spinning device;
• an accumulator navel for temporarily storing the taken-up thread;
• a winding device for producing a cross-wound package;
• and a suction nozzle, which can be subjected to a vacuum, the open-end spinning machine being equipped with at least one service unit, which serves several of the workstations and which has an auxiliary thread delivery device for delivering an auxiliary thread and an auxiliary thread take-up, which are used during a piecing process at a workstation to be served,
• characterised in that
• the auxiliary thread take-up is configured and is operated in such a way that the auxiliary thread take-up speed of the auxiliary thread take-up for the take-up of the pieced auxiliary thread has a speed offset, which takes into account the thread take-up speed of the thread take-up device and at least one further correction factor.