Patent ID: 11960274
Assignee: B&R INDUSTRIAL AUTOMATION GMBH
Field: Measurement (Instruments)
Classification: CPC G  H | IPC G  H

Claim 9:
10. Electrical switching arrangement having at least two channels, which each electrically conductively connect an electrical source supplying the respective channel, forming an electrical supply quantity, to an output of the respective channel, having a diagnoser and an input interface, wherein the input interface is designed to accept an external safety signal, from which an internal safety signal is respectively generated for the at least two channels in order to control a voltage interrupter connected in series in the respective channel, wherein the switching arrangement is designed to superimpose the internal safety signals with a pulsed diagnostic signal, in which a first diagnostic signal level and a second diagnostic signal level alternate, to form two safety signal levels which alternate in the internal safety signals and to open the voltage interrupters connected in the respective channels by controlling with the first safety signal level and to close them by controlling with the second safety signal level in order to respectively alternately interrupt the supply quantities appearing in the respective channels, and wherein the diagnose unit is designed to measure the alternately interrupted supply quantities as measurement quantities and to compare the detected measurement quantities of the alternately interrupted supply quantities to one another in order to determine a deviation between the detected measurement quantities for monitoring the electrical switching arrangement.