EP 0623943 B1 19970820 - Relay terminal array with malfunction detection and transmission functions
Title (en)
Relay terminal array with malfunction detection and transmission functions
Title (de)
Endstufenrelaismatrix mit Fehlererkennungs- und Übertragungsfunktionen
Title (fr)
Ensemble de relais de sortie avec des fonctions de détection d'erreur et de transmission
Publication
Application
Priority
JP 7844193 A 19930406
Abstract (en)
[origin: EP0623943A1] This invention is a relay terminal which can accurately detect malfunctions of relays. Detection coils are connected in series to relay contacts on load circuits. By detecting the magnetic flux generated in the coils, a current detection circuit, which contains a Hall element, determines if a current is flowing in the load circuits. Detection signals, which indicate the presence or absence of a current, and outputs from the relay coils are processed in a transmission control circuit. A malfunction detection signal indicating whether or not a malfunction has occurred is transmitted to a programmable controller via a driver/receiver circuit. If a malfunction has occurred, display means flash on and off. <IMAGE>
IPC 1-7
IPC 8 full level
G01R 15/20 (2006.01); H01H 47/00 (2006.01)
CPC (source: EP)
H01H 47/002 (2013.01)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 0623943 A1 19941109; EP 0623943 B1 19970820; DE 69405043 D1 19970925; JP H06295652 A 19941021
DOCDB simple family (application)
EP 94105339 A 19940406; DE 69405043 T 19940406; JP 7844193 A 19930406