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公开(公告)号：EP0879475A1
公开(公告)日：1998-11-25
申请号：EP97900577.0
申请日：1997-01-09
CPC分类号： H01H9/168 , H01H47/002
摘要： The invention relates to an electromagnetic switch magnet control system (1) for contactors (2). The contactor (2) has a coil (7) which drives switching contacts (5) via an armature (4) moving between an ON and OFF position. The switch magnet control system (1) also has a sensor (S, 3a) used to determine the position of the armature (4) driven by the coil (7). A mark (4a) joined to the armature (4) can be detected by the sensor (S, 3a). The sensor (S, 3a) is arranged with respect to the mark (4a) in such a manner that when the armature (4) deviates to a small extent from the ON position the sensor (S, 3a) detects the mark (4a) and sends an appropriate signal to the switch magnet control system (1). So, a maximum magnetic field is generated which drives the armature (4) towards the ON position as soon as the sensor (3; S, 3a) detects the mark (4a), the strength of said maximum magnetic field being set or adjusted for a predetermined maximum time (tmax) and cut off at the end of said maximum time (tmax).
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公开(公告)号：EP0885448A1
公开(公告)日：1998-12-23
申请号：EP97906135.0
申请日：1997-02-27
CPC分类号： H01H50/646 , H01H3/001
摘要： The invention relates to an electromagnetic switching device (2) with restricted guidance, in which the closure contacts do not come into contact when the opener contact is welded or fixed. The problem was to create the restricted guidance without additional components and for the case of parallel alignment of the magnet system armature (8) and of the contact support (12) bearing the closure and opening contacts. To that end an elastically resilient transmission lever (10) is provided to establish the effective connection between the armature (8) and the contact support (12) extending at a distance from and parallel to the armature (8).
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3.发明公开
公开(公告)号：EP0879474A1
公开(公告)日：1998-11-25
申请号：EP97900969.0
申请日：1997-01-09
CPC分类号： H01H9/168 , H01H47/002 , H01H50/08
摘要： The invention relates to an electronic switch magnet control system for contactors, the contactor (2) having a travel sensor (3) used to determine the position of the armature (4). A measuring transducer (6) determines the actual current in the armature coil (7). A current-theoretical-value transmitter presets a theoretical current in relation to the armature position. A voltage regulator presets the coil voltage (Ucoil) applied to the armature coil (7) in relation to the current deviation between the actual current and the theoretical current. The travel sensor (3) has a number of n sensors, in particular mechanical switches, light barriers, Hall-effect detectors or induction switches which are all arranged along the distance (H) covered by the armature (4), thereby determining the armature position discretely, a theoretical-current value being allocated to each sensor of the travel sensor (3).
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公开(公告)号：EP0879472A1
公开(公告)日：1998-11-25
申请号：EP97900576.0
申请日：1997-01-09
IPC分类号： H01H9
CPC分类号： H01H9/168 , H01H2071/048
摘要： The invention relates to a position determining device (1) for the armature (2) of the switch magnet of a contactor, said device being used to control and check the course of movement of the armature (2). Said armature (2) has a mark (3) and can be moved between an OFF and an ON position. The position determining device (1) has a plurality of sensors (5) which can be used to detect the marking (3) of the armature (2), thereby determining the position of said armature (2). The marking (3) can be simultaneously detected by at least two sensors (5).
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