Festo Se &co. Kg

Festo Eg & Co. Kg

Philippus Hartmann

Ralf Forcht

Eduard Wenske

Michael Schultheiß

Wolfram Turnaus

A safety device (), in particular a safety control apparatus and/or a safety diagnosis apparatus, for industrial automation, including a logic voltage zone (), a load voltage zone () which is galvanically separated from the logic voltage zone (), a transmission unit () for transmitting a communication signal between the logic voltage zone () and the load voltage zone () whilst maintaining the galvanic separation, a first voltage supply connection () for providing a first supply voltage (V) for the logic voltage zone () and a first current limitation element (), wherein the transmission unit () is connected on the first voltage supply connection () via the first current limitation element () and is fed from the first voltage supply connection () via the first current limitation element ().

Safety device, valve arrangement and method

A valve device having a valve housing, through which passes a fluid channel, in which are formed a valve seat and a valve member which is accommodated such that it can be moved relative to the valve seat, having an electromechanical actuator for moving the valve member between at least two functional positions in order to influence a free cross-section of the fluid channel, and having a control device, which is designed for activating the actuator depending on a control signal and includes a delay circuit which, in the case of the valve being switched off, is designed for a time-delayed movement of the valve member into a switch-off position. The delay circuit includes an electrical energy store which, in the case of the valve being switched off, is designed for energy-independent movement of the valve member into the switch-off position.

Growing community of inventors

Wildberg, Germany

Philippus Hartmann