Siemens Aktiengesellschaft

Josef Scherl

Rudolf Zimmermann

Ralf Tomaschek

An embodiment of the invention relates to an electrical installation unit for making contact with electrical loads, wherein the installation unit has at least two contact elements. In at least one embodiment, an installation unit is disclosed in which an electrical connection provided between the two contact elements is necessarily interrupted when the installation unit is dismantled. In at least one embodiment, the installation unit includes at least one device for interrupting the conductive connection leading to the contact elements when the installation unit is dismantled. This at least one device, in at least one embodiment, includes two connecting elements in a switching element of the installation unit and, for example, a contact pin consisting of a conductive material, which produces a conductive connection between the connecting elements in a properly installed state of the installation unit. Alternatively, for example, the electrical connection between the connecting elements can be produced by a wire or a braided wire, by which the electrical connection is interrupted, for example by the wire or braided wire being ripped, when the installation unit is dismantled. A particularly advantageous application for the installation unit according to at least one embodiment is, for example, the use as an EMERGENCY STOP command device.

Command device with switching element monitoring

A control unit including a monitoring apparatus is disclosed, with the monitoring apparatus having an operating element and an attachment element. In at least one embodiment, the control unit is in two parts and includes an operating unit and switching elements. The required spatial association between the operating unit and the switching element is intended to be monitored in a cost-effective and reliable manner. For this purpose, when the monitoring apparatus is installed correctly, at least one second switching element can be operated by way of an operating member, and a first switching element is operated at the same time by way of the operating element of the monitoring apparatus.

Control unit with a monitoring apparatus

A system includes a control device including an actuator, a movement of which is adapted to cause a movement of an actuator plunger; and a switching element. The switching element includes a switch slide adapted to follow a movement of the actuator plunger; a first terminal and a second terminal; contacting members adapted to connect the first terminal to the second terminal; and contact breaking member adapted to disconnect the first terminal from the second terminal in response to an inward displacement of the switch slide exceeding a first distance. The switching element further includes a jump system, responsive to displacement of the switch slide, adapted to bring the contacting members together to connect the first terminal to the second terminal if the inward displacement of the switch slide exceeds a second distance that is less than the first distance.

System

A key switch is disclosed, including a key channel for receiving a key and including a key-insertion-dependent switching mechanism. The switching mechanism exhibits a device for key monitoring. A key switch is specified which can be inexpensively manufactured and exhibits additional security-related options. For this purpose, the key switch exhibits a device for key monitoring which exhibits a quasi-rigid system arranged axially in the key channel, which are provided for key ejection and for operating a switching element.

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Neunburg, Germany

Josef Scherl