Control device for safety-critical components and...

Details Control device for safety-critical components and... Control device for safety-critical components and...

2007-12-04

2007-12-04

Deberadinis, Robert L. (Department: 2836)

Electrical transmission or interconnection systems

Personnel safety or limit control features

Reexamination Certificate

active

10559536

ABSTRACT:
The response time of safety-critical electrical components is improved during a safety cut-out. To this end, the outputs of two controllers used to control switches connected in series and pertaining to a switching device for the electrical components or machines to be switched are subjected to an AND operation. The transmission time from one controller to another is no longer relevant in terms of the safety cut-out, if one controller receives the cut-out signal from the input and the other controller is responsible for operating both switches in unison. The average response time during the safety cut-out increases accordingly.

REFERENCES:
patent: 4665323 (1987-05-01), Russell et al.
patent: 6397280 (2002-05-01), Nitschke et al.
patent: 6515377 (2003-02-01), Ubelein et al.
patent: 44 09 541 (1995-09-01), None
patent: 100 09 707 (2001-09-01), None
NOT-AUS-Schaltgeräte, Schutztürwächter, PNOZplus—Mastergerät PNOZXM1, Annoncement, Pilz, NSG-D-1-051-07/00, XP-000961973; Jul. 2000.
“Not-Aus-Schaltgeraete, Schutztuerwaechter” Announcement PILZ NSG-D-1-051-07/00, XX, XX, Jul. 2000.

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