公开(公告)号：US10141746B2

公开(公告)日：2018-11-27

申请号：US15279938

申请日：2016-09-29

申请人： SICK AG

发明人： Adrian Schwarz ,  Shinde Geeta ,  Victor Kok Heng Phay

IPC分类号： H01H31/10 ,  H01H33/52 ,  H01H33/59 ,  H01H47/00 ,  H01H85/46 ,  H01H19/14 ,  H02J4/00 ,  H02J1/06 ,  G05B9/02

摘要： A cascade of safety switches includes safety switches for the monitoring of accesses of an automation system, at least one connection unit for the arrangement between two safety switches, and a terminator for the termination of the cascade of safety switches. Each safety switch has a first conductor and a second conductor. The first conductor includes conductor cores for transmitting signals and for receiving voltage. The second conductor includes conductor cores for receiving signals and for forwarding the voltage. The connection unit has a first circuit and a second circuit. The first circuit is provided for receiving the signals of a subsequent safety switch and for forwarding the signals of the subsequent safety switch to an upstream safety switch and the second circuit is provided for connecting the connection unit to a voltage source and to a conductor core for receiving the voltage of the subsequent safety switch.

公开(公告)号：USD803704S1

公开(公告)日：2017-11-28

申请号：US29556821

申请日：2016-03-03

申请人： SICK AG

设计人： Adrian Schwarz ,  Omar Saycon ,  Tun Tun Lin ,  Shinde Geeta ,  Victor Phay Kok Heng