EP 0423638 B1 19950111 - Safety circuit for motor-driven and electrical brake- or arrestable oscillating weights or machine parts.
Title (en)
Safety circuit for motor-driven and electrical brake- or arrestable oscillating weights or machine parts.
Title (de)
Sicherheitsschaltung für elektromotorisch angetriebene und elektrisch brems- oder arretierbare Schwungmassen oder Maschinenteile.
Title (fr)
Circuit de sécurité pour moteur électrique et freinage ou verrouillage électrique des masses oscillantes ou des éléments des machines.
Publication
Application
Priority
DE 3934662 A 19891018
Abstract (en)
[origin: US5159203A] In safety circuits for braking or arresting devices (7) of flywheel masses or machine parts, especially a revolving door, which are driven by electric motor and can be switched on electrically, in which at least one of two edges moving toward each other is provided with a pressure-sensitive electrical switching member (3) for generating interference signals. Interference signals generated during a disturbance are sent to an electronic control unit (1) and are used, by an electronic switch (8), to switch off the drive motor (10) and/or to switch on a braking or arresting device (7). The movement of the part provided with the movable edge or element is stopped even when the electrical switch (8) of the control unit (1) does not respond correctly in the presence of an interference signal. The reliability of the safety circuit is continuously checked. An electronic switching unit (2), which interrupts the continuous excitation of a safety relay (4) having at least three relay contact switches (a, b, c) and at least one closing contact (a, b, or c), is connected before the electronic control unit (1). The relay contact switches (a, b, c) switch the circuits (9, 6) of the drive motor (10) and of the braking or arresting device (7), as well as a control circuit (11).
IPC 1-7
IPC 8 full level
H01H 47/00 (2006.01)
CPC (source: EP US)
H01H 47/005 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DK ES FR GB IT LI NL SE
DOCDB simple family (publication)
EP 0423638 A2 19910424; EP 0423638 A3 19920422; EP 0423638 B1 19950111; AT E117126 T1 19950115; DE 3934662 A1 19910425; DE 3934662 C2 19910801; DK 0423638 T3 19950619; ES 2069648 T3 19950516; US 5159203 A 19921027
DOCDB simple family (application)
EP 90119589 A 19901012; AT 90119589 T 19901012; DE 3934662 A 19891018; DK 90119589 T 19901012; ES 90119589 T 19901012; US 59900390 A 19901017