Electric control device for a roller drive motor of a pipe rolling mill

摘要

An electrical control arrangement for the speed control of a roller drive motor for tube rolling mills for the production of hollow blocks is assigned a replacing power control, in which a power controller (15) determines the actual value of the motor power from the speed as well as the field strength and the armature current of the drive motor (1) Compares the setpoint and uses it to generate a manipulated variable that acts on the current controller (8) in the sense of constant power output.