EP 0225444 B1 19901024 - PROCESS FOR THE CONTROL OF AN ELECTROMAGNET
Title (en)
PROCESS FOR THE CONTROL OF AN ELECTROMAGNET
Publication
Application
Priority
DE 3543055 A 19851205
Abstract (en)
[origin: EP0225444A1] 1. Method for controlling an electromagnet (10) which attracts an armature, in which the electromagnet (10) in its holding phase is controlled with pulsed current from a power supply, the current being switched off when an upper threshold value is exceeded and is switched on when it falls below a lower threshold value, characterized in that the frequency of the pulsing is measured during the holding phase and compared with a preset frequency value, and an error signal is initiated when a maximum deviation is exceeded.
IPC 1-7
IPC 8 full level
F01L 9/04 (2006.01); F01L 9/20 (2021.01); H01F 7/18 (2006.01); H01H 47/32 (2006.01)
CPC (source: EP)
F01L 9/20 (2021.01); H01F 7/1805 (2013.01); H01H 47/325 (2013.01)
Designated contracting state (EPC)
DE ES FR GB IT SE
DOCDB simple family (publication)
DE 3543055 C1 19861211; CA 1276679 C 19901120; DE 3675167 D1 19901129; EP 0225444 A1 19870616; EP 0225444 B1 19901024; ES 2018147 B3 19910401; JP H0368522 B2 19911028; JP S62134911 A 19870618
DOCDB simple family (application)
DE 3543055 A 19851205; CA 524701 A 19861205; DE 3675167 T 19861002; EP 86113598 A 19861002; ES 86113598 T 19861002; JP 27383786 A 19861117