Erni Elektroapparate Gmbh

K. A. Schmersal Gmbh & Co., Kg

K.a. Schmersal Gmbh & Co.

Udo Kienapfel

Hermann Friedrich Hoepken

Gerd Lausberg

Rudi Singer

J&ouml;rg Koch

Marc Stanesby

Herbert Recke

Stawros Orkopoulos

An electronic device that can be pushed onto a support rail ( ), having a housing ( ), with an electronic module that can be inserted detachably into the housing, and bus contacts are provided for the transmission of data and/or energy to neighboring electronic devices that are pushed onto the support rail ( ) and have an identical design, with appropriately designed bus terminal. The bus contacts can be displaced relative to the housing ( ). The bus contacts can be immobilized via a latching fixture so that when in a latched position they can be brought into contact of the bus terminals in the neighboring device.

Electronic device with data bus and energy bus connection

The state of operability of a circuit having at least one group of condition responsive monitoring switches, the switches having first terminals connected to an input signal source and output terminals connected to an evaluation unit, is monitored by periodically interrupting the connection between at least one of the condition responsive switches of each group and the evaluation unit. The evaluation unit compares the change in potential at the output terminal of the one switch, resulting from the interruption, with the potential at the output terminal of another switch.

Monitoring device having monitoring switches

Growing community of inventors

Düsseldorf, Germany

Udo Kienapfel