Device for opening and closing a window has actuator drive(s) with revolution rate regulation circuit for own motor; revolution rate regulator contains lower level control circuit

摘要

The device has at least one actuator drive (1) with an electric motor (4) fixed to a structural body on one side and connected to a moving window panel on the other side. Each actuator drive contains a revolution rate regulation circuit for its own motor, whereby the revolution rate regulator contains a lower level R x I control circuit.