US 12,034,439 B2
Safety device, valve arrangement and method
Philippus Hartmann, Wildberg (DE); and Michael Schultheiß, Rudersberg (DE)
Assigned to Festo SE & Co. KG, Esslingen (DE)
Filed by Festo SE & Co. KG, Esslingen (DE)
Filed on May 4, 2021, as Appl. No. 17/307,485.
Claims priority of application No. 102020210899.4 (DE), filed on Aug. 28, 2020.
Prior Publication US 2022/0069820 A1, Mar. 3, 2022
Int. Cl. H03K 19/003 (2006.01)
CPC H03K 19/003 (2013.01) 17 Claims
OG exemplary drawing
 
1. A safety device for industrial automation, comprising 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 for the logic voltage zone, and a first current limitation element, wherein the transmission unit is connected to 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, and
wherein the logic voltage zone comprises a voltage converter for converting the supply voltage into an electronics supply voltage, as well as a computation unit which is fed from the electronics supply voltage and is designed to receive and/or output the communication signal.