Device for monitoring a space by series-connected normally-open contacts, in particular cover interlock switches in a security enclosure
First Claim
1. Device for monitoring a space by varying a sequence of a series connection of normally-open contacts, in particular of cover interlock switches in a security enclosure, comprisinga series-connection variation device;
- a security cover;
at least two normally-open contacts; and
a protective circuit;
said at least two normally-open contacts each having an open, electrically non-conducting state and a closed, electrically conducting state;
said security cover being configured to shift each of the at least two normally-open contacts into a closed, electrically-conducting state in each case;
said protective circuit being configured to detect an opening of at least one of the at least two normally-open contacts;
said series-connection variation device connecting in series the at least two normally-open contacts;
it being possible to vary the sequence of the series connection of the at least two normally-open contacts by the series-connection variation device.
1 Assignment
0 Petitions
Accused Products
Abstract
A device for monitoring a space by changing a sequence of a serial interconnection of closing contacts, in particular of cover switches in a security housing, having a series circuit variation apparatus, a security cover, at least two closing contacts, and a protective circuit, wherein said at least two closing contacts each have an open, electrically nonconductive state and a closed, electrically conductive state, wherein said security cover is set up to put each of said at least two closing contacts in a closed, electrically conductive state, wherein said protective circuit is set up to detect an opening of at least one of said at least two closing contacts, wherein said series circuit variation apparatus serially interconnects said at least two closing contacts, wherein the sequence of the serial interconnection of said at least two closing contacts can be changed by said series circuit variation apparatus.
5 Citations
13 Claims
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1. Device for monitoring a space by varying a sequence of a series connection of normally-open contacts, in particular of cover interlock switches in a security enclosure, comprising
a series-connection variation device; -
a security cover; at least two normally-open contacts; and a protective circuit; said at least two normally-open contacts each having an open, electrically non-conducting state and a closed, electrically conducting state; said security cover being configured to shift each of the at least two normally-open contacts into a closed, electrically-conducting state in each case; said protective circuit being configured to detect an opening of at least one of the at least two normally-open contacts; said series-connection variation device connecting in series the at least two normally-open contacts; it being possible to vary the sequence of the series connection of the at least two normally-open contacts by the series-connection variation device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. Method for varying a sequence of a series connection of normally-open contacts, comprising the steps
series connection of at least two normally-open contacts using a series-connection variation device; -
varying the sequence of the series connection of at least two normally-open contacts using the series-connection variation device; closing each of the at least two normally-open contacts in an electrically conducting state using a security cover; and detecting the closure status of each of the at least two normally-open contacts using a protective circuit. - View Dependent Claims (10, 11, 12, 13)
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Specification