EP 2017803 B1 20110706 - Active function maintenance and safety system for warning loudspeaker networks in double-wire loop system
Title (en)
Active function maintenance and safety system for warning loudspeaker networks in double-wire loop system
Title (de)
Aktives Funktionserhaltungs- und Sicherungssystem für Alarmierungs-Lautsprechernetze in Zweidraht-Ringleitungstechnik
Title (fr)
Système de conservation des fonctions et de sécurisation actif pour réseaux de haut-parleurs d'alarmes dans une technique de conduite annulaire à deux fils
Publication
Application
Priority
EP 07013864 A 20070716
Abstract (en)
[origin: EP2017803A1] The system has a central module for feeding and operational mode switching of a double-wire loop. A central feeding and operational mode switching module registers an individual line and loudspeaker fault using a function maintaining and securing module installed at an alarming loudspeaker. The switching module switches to a two-way operation in response to registration for function maintenance. A faulty transmission chain with exception of defective parts functions again within seconds. Ground fault control is present for securing protection against accidental contact.
IPC 8 full level
G08B 3/10 (2006.01); G08B 7/06 (2006.01); G08B 25/04 (2006.01); G08B 29/16 (2006.01)
CPC (source: EP)
G08B 3/10 (2013.01); G08B 7/06 (2013.01); G08B 25/04 (2013.01); G08B 29/16 (2013.01); H04R 29/007 (2013.01); H04R 27/00 (2013.01)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
EP 2017803 A1 20090121; EP 2017803 B1 20110706; AT E515758 T1 20110715
DOCDB simple family (application)
EP 07013864 A 20070716; AT 07013864 T 20070716