Safety circuit for actuators controlled by analogue signals e.g. for machine tools and vibratory tables

摘要

The circuit has a signal line (2) for a control signal with a first element for maintaining voltage or current contg. passive components (R1,C1) with a first defined maintenance time and powered by the control signal. The control signal line is also connected to a second element for maintaining voltage or current contg. passive components (R2,C2) with a second defined maintenance time essentially longer than the first and powered by a voltage supply (UB).