Lenze Automation Gmbh

Pilzland Produktions Gmbh

Andreas Wempe

Dirk Duesterberg

Andreas Tolksdorf

Edmund Neumann

Uwe Beilfuss-Spickmann

Frank Oltmann

Uwe Beilfuß-Spickmann

Karsten HÜBNER

Gerhard Visser

A method produces a digital signal from an analog signal. The method includes: producing a pulse-width-modulated actuation signal by a frequency converter, wherein the pulse-width-modulated actuation signal is produced over a number n of periods of the pulse width modulation such that the signal curve of the pulse-width-modulated actuation signal is identical in the respective periods; applying the actuation signal to a load; producing a bitstream with a predetermined bit repetition duration depending on an analog signal to be measured by a sigma-delta modulator, wherein the analog signal to be measured depends on the actuation signal and on the load, wherein a number m of bits are produced and stored with the predetermined bit repetition duration over a respective period of the pulse-width-modulated actuation signal; and summing corresponding bits of the respective periods in order to form the digital signal.

Method for generating a digital signal from an analog signal, and frequency converter

A frequency converter () includes a housing (), a circuit board () arranged in the housing, and a coupling arrangement () arranged externally on the housing () for galvanically coupling the circuit board () to an adjacently arranged second frequency converter (), wherein the coupling arrangement () either comprises a base portion () and a coupling member () movable with respect to the base portion () along a defined movement path, or is formed as a rigid busbar which is designed for simultaneous attachment to the frequency converter and the second frequency converter, and the coupling arrangement () is galvanically coupled to the circuit board (). The coupling arrangement () is connected to the circuit board () by a spring element (), wherein this spring element () has a fastening portion () on the circuit board side and a fastening portion () on the coupling arrangement side. The fastening portions are interconnected by a resilient spring portion ().

Frequency converter and spring element therefor

Growing community of inventors

Aerzen, Germany

Andreas Wempe