Lenze Automation Gmbh

Lenze Se

Dirk Duesterberg

Andreas Burgermeister

Heiko Stichweh

Peter Hesse

Holger Borcherding

Andreas Wempe

Thomas Gentzen

Fritz Witte

Thomas Petersen

Daniel Borowski

Marc Sommer

A method transmits temporally successive datasets of a position sensor via an Ethernet network, wherein a respective dataset of the position sensor consists of a maximum of 4 bits. The method includes the steps of: continuous reading, by a reference component connected to the Ethernet network, of the datasets of the position sensor which are to be transmitted; and continuous writing, by the reference component, of a respective dataset to a 4-bit transmit register of a Media Independent Interface of the reference component.

Method for transmitting temporally successive datasets of a position sensor via an ethernet network, and electrical drive system

A controller for controlling an electric motor includes an interface having a first connection pole and a second connection pole, wherein the interface is designed to connect a measuring resistor and to connect a digital encoder. The controller is designed to evaluate a resistance value of the measuring resistor in order to monitor the temperature of the electric motor when the measuring resistor is connected to the interface, and the controller is designed to receive digital data from the digital encoder at the interface when the digital encoder is connected to the interface.

Control device for controlling an electric motor

A method for starting up a controller system having at least one electric controller and a plurality of hardware modules of different types which can be coupled to the controller. To each type of hardware module there is assigned a type-specific parameter set and a type-specific control program. A respective parameter set has a quantity of parameters with adjustable parameter values. The method has the steps of: coupling a hardware module to the controller, determining the type of the coupled hardware module by way of the controller, selecting the type-specific control program by way of the controller, and by way of the controller, selecting the type-specific parameter set as an adjustable parameter set.

Method for starting up a controller system, and controller system

A method is provided for operating a frequency converter, which is designed to drive a three-phase motor, wherein the frequency converter has three half-bridges each having at least two switches. The method includes the following steps: generating three phase voltages for the three-phase motor by a pulse width modulation, wherein, for the pulse width modulation, various switching patterns of the switches are activated, wherein specific star point voltages ensue for various groups of switching patterns; and in at least one operating state of the frequency converter, within a respective period of the pulse width modulation, activating only those switching patterns in which an identical star point voltage ensues.

Method for operating a frequency converter and frequency converter

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

An electric control device includes a first delta sigma modulator having a clock input connection, a second delta sigma modulator having a clock input connection, and an evaluation unit. The evaluation unit includes a first clock output connection which is connected to the clock input connection of the first delta sigma modulator by a first electrical cable, and a second clock output connection which is connected to the clock input connection of the second delta sigma modulator by a second electrical cable. The evaluation unit is designed to generate a clock signal (CLK) at the first clock output connection () in phase opposition to a clock signal (CLK) at the second clock output connection ().

Electric control device

A circuit for generating a sampling signal for a UART interface has an input terminal designed to receive a peripheral clock, an output terminal designed to output the sampling signal, a bit rate memory designed to store a value corresponding to a desired bit rate of the UART interface, a peripheral clock memory designed to store a value corresponding to a frequency of the peripheral clock, a sum memory designed to store a sum value, and a computing unit. The computing unit compares a comparison value, which is dependent on the sum value stored in the sum memory, with a threshold value, which is dependent on the value stored in the peripheral clock memory. The result of the comparison is taken as a basis for generating the sampling signal at a first level or a second level. In step with the peripheral clock and on the basis of the result of the comparing, the sum value stored in the sum memory is altered by the value stored in the bit rate memory or the sum value stored in the sum memory is altered by a value that is dependent on the value stored in the peripheral clock memory.

Circuit for generating a sampling signal for a UART interface, and by comparing values stored in peripheral clock memory

A measuring device includes a delta-sigma modulator configured to take an analog signal as a basis for generating a bit stream, and an evaluation unit that receives the bit stream from the delta-sigma modulator and evaluates the received bit stream. The measuring device has a single data transmission line, wherein the delta-sigma modulator is configured to transmit the bit stream to the evaluation unit via the single data transmission line using a transmit clock, and wherein the evaluation unit is configured to reconstruct the transmit clock and/or a phase of bits within the bit stream from the received bit stream and to extract the bits from the received bit stream based on the reconstructed transmit clock and/or based on the reconstructed phase.

Measuring device and electrical controller

A method is provided for generating a digital signal from an analog signal generated using a frequency converter on the basis of pulse width modulation with a variable period duration, values of the digital signal corresponding to an average value of the analog signal over an associated period duration of the pulse width modulation. The method includes the acts of: generating a bit stream on the basis of the analog signal using a sigma-delta modulator, the bit stream being generated with a constant modulator clock; generating temporally successive digital samples during an associated period duration by filtering the bit stream using a number of digital filters, intervals of time between the temporally successive digital samples being multiples of the modulator clock, the digital filters being started with a time delay with respect to one another in the intervals of time of the multiples of the modulator clock, and a respective digital filter outputting an associated digital sample, and forming an average value of the digital samples generated during the associated period duration, the average value forming the value of the digital signal (DS) for the associated period duration.

Method and device for producing a digital signal

A method is provided for generating a digital signal (DS) from an analog signal (IA, UA) generated by a frequency converter on the basis of pulse width modulation, wherein the digital signal corresponds to a mean value of the analog signal over a period of the pulse width modulation. The method includes the acts of: generating a bit stream (BS(i)) with a predetermined bit repetition duration (BW) depending on the analog signal by way of a sigma-delta modulator () and, during a time interval which has a duration which is at least as great as the period of the pulse width modulation: multiplying a respective bit (BS(i)) of the bit stream by a corresponding rating coefficient (BK(i)) for generating a respective bit/rating coefficient product and summing the respective bit/rating coefficient products, wherein the sum represents the digital signal.

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Emmerthal, Germany

Dirk Duesterberg