Patent ID: 9664724
Date: 2017-05-30
CPC Classifications: G01R,G05B

Claim:
1. A device for monitoring and switching a load circuit, having: a) an input part and an output part, b) switching inputs to connect a controller to the input part, c) switching outputs to connect at least one load circuit with at least one load to be switched to the output part, d) at least one load switch for switching the at least one load, e) wherein the input part has an input circuit which converts switching commands of the controller incoming via the switching inputs into switching processes of the load switches, f) having a first fault detection circuit, connected in parallel with the load circuit, to detect faults in the load circuit and g) having a second fault detection circuit, connected in series with the load circuit, to detect faults in the load circuit, h) wherein the first and the second fault detection circuit each generate intermediate fault signals which are logically linked in a logic circuit to form an overall fault signal, and wherein the overall fault signal is transmitted from the output part to the input part and made available via the switching inputs for evaluation.