Siemens Aktiengesellschaft

Klaus Aufschneider

Markus Meier

Johann Seitz

Dirk Hertz

Fritz Royer

Stefan Zitzler

Manfred Prölss

Herbert Haller

Andreas Kneidl

Kyoung-Jin Lee-Hoff

Michael Lehner

The invention relates to a safety-related switching device () which is equipped with an electromagnetic coil (), a control unit () and a first switching means (). The first switching means () is designed to activate and deactivate the electromagnetic coil (). Moreover, the first switching means () is designed to receive a coil control signal (), a monitoring signal () and a first higher-level control signal (). The safety-related switching device () also has a receiver unit () for receiving an external control signal (). The receiver unit () is designed to generate the first higher-level control signal () and a second higher-level control signal () from the external control signal (). The control unit () is designed to receive the second higher-level control signal ().

Safety-related switching device

The invention relates to a soft starter () for connecting at least one main circuit (), each of which includes a bypass circuit () having a semiconductor switch (). Said soft starter () comprises a control unit () for actuating the bypass circuit (), and the control unit () is equipped with a control signal input (). According to the invention, the control unit () has a separate safety signal input ().

Soft starter, operating method, and switching system

According to an embodiment of the invention, a motor starter includes a connection module, which includes a second and third interface, wherein the second interface is electrically conductively connected to the third interface. The security evaluation unit can be mechanically coupled to the connection module so that an electrically conductive connection is produced between the first and second interfaces. The secure switch unit can be mechanically coupled to the connection module so that an electrically conductive connection between the third and fourth interfaces is produced, so that, in the coupled state of the security evaluation unit and the secure switch unit to the connection module; there is an electrically conductive connection between the first and fourth interfaces via the connection module, so that the control command can be transmitted from the security evaluation unit via the connection module to the secure switch unit.

Secure motor starter

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Illschwang, Germany

Klaus Aufschneider