Title:
安全スイッチモジュールおよびスイッチ素子のオフ能力検査方法
Document Type and Number:
Japanese Patent JP4191494
Kind Code:
B2
Abstract:
A safety switching module for safely switching-off an electrical load ( 43 ), comprising a first and a second switching control device ( 20 A, 20 B); a first and a second switching element ( 24.1, 24.2 ) both being series-connected with each other and forming a first current path ( 26.1 ) for supplying the load, whereby the first switching element ( 24.1 ) can be controlled by the first switching control device ( 20 A) and the second switching element ( 24.2 ) can be controlled by the second switching control device ( 20 B); and an evaluation and control device ( 12 ) for testing the switching-off ability of at least one switching element. A third and a fourth switching element ( 24.3, 24.4 ) are provided which are connected to each other in series, are connected in parallel to the series connection consisting of the first and second switching elements ( 24.1, 24.2 ) and form a second current path ( 26.2 ), the third switching element ( 24.3 ) being controlled by the first switching control device ( 20 A) and the fourth switching element ( 24.4 ) being controlled by the second switching control device ( 20 B). Further, the evaluation and control device ( 12 ) carries out the test of the switching elements by alternating in one of both current paths ( 26.1, 26.2 ) so that the other of both current paths supplies the load ( 43 ).
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Inventors:
File, richard
Flyer, Jurgen
Flyer, Jurgen
Application Number:
JP2002591715A
Publication Date:
December 03, 2008
Filing Date:
March 14, 2002
Export Citation:
Assignee:
Pilz Game GmbH and Co. Kahge
International Classes:
F16P7/02; H03K17/00; F16P3/00; H01H9/54; H01H47/00; H03K17/18
Domestic Patent References:
| JP10341140A | ||||
| JP3082661A | ||||
| JP5199091A | ||||
| JP6097793A | ||||
| JP7281704A | ||||
| JP10039924A | ||||
| JP2001516161A |
Attorney, Agent or Firm:
Inaoka cultivation
Mio Kawasaki
Mio Kawasaki