Device and method for monitoring and switching a load circuit
First 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 andg) 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.
3 Assignments
0 Petitions
Accused Products
Abstract
In a device for monitoring and switching a load circuit, having an input part and an output part, having switching inputs to connect a controller to the input part, having switching outputs to connect at least one load circuit with at least one load to be switched to the output part, having at least one load switch to switch, in particular to switch on and off, the at least one load, having a first fault detection circuit, connected in parallel with the load circuit, to detect faults in the load circuit, and having a second fault detection circuit, connected in series with the load circuit, to detect faults in the load circuit, 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. The first and the second fault detection circuit respectively generate intermediate fault signals which are logically linked in a logic circuit to form an overall fault signal. The overall fault signal is transmitted from the output part to the input part and made available via the switching inputs for evaluation.
5 Citations
17 Claims
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1. A device for monitoring and switching a load circuit, having:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 16, 17)
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14. A method for monitoring and switching a load circuit with a load, wherein
a) a device with an input part and an output part is or has been switched between a controller and the load circuit, b) the input part has an input circuit which converts switching commands of the controller) incoming via switching inputs into switching processes of the load switches, c) at least a first fault detection circuit, connected in parallel with the load circuit, and at least a second fault detection circuit, connected in series with the load circuit, detects faults in the load circuit and generates at least one respective intermediate fault signal in the output part, d) a logic circuit comprising the intermediate fault signals generates an overall fault signal derived from these intermediate fault signals and transmits it from the output part to the input part, and wherein e) the overall fault signal is made available via the switching inputs for evaluation.
Specification