Method for operating an extrusion system and extrusion system

A method for operating an extrusion system comprising an extrusion unit that includes an extrusion device and a cartridge device, wherein the cartridge device is configured to have at least two cartridges and the extrusion unit is designed to have a receiving space for receiving the cartridge device, wherein the extrusion device has extrusion pistons operable at at least two different extrusion speeds, each of the extrusion pistons being designed to cooperate with the at least two cartridges, a control device, at least one drive device, and a power supply, the method comprises:

• inserting the cartridge device into the receiving space;
• emitting at least one first signal from a signal generator of the cartridge device;
• receiving the at least one first signal of the cartridge device by at least one sensor of the extrusion device;
• sending a second signal from the sensor to the control device;
• storing a ratio of feed rates of the extrusion pistons in a storage device of the control device as a function of the second signal;
• actuating the at least one drive device by the control device for displacing the extrusion pistons into a starting position, in which a first plunger of a first of the extrusion pistons is substantially in contact with a first of the at least two cartridges of the cartridge device and in which a second plunger of a second of the extrusion pistons is substantially in contact with a second of the at least two cartridges of the cartridge device;
• actuating the at least one drive device by the control device with a ratio of feed rates stored in the storage device of the control device for the extrusion pistons at user request;
• and
• emitting at least one third signal from the signal transmitter of the cartridge device which stores the starting position of the extrusion pistons in the storage device.