Method and device for realizing programmable logic control function of frequency converter, and frequency converter
A programming logic control and logic control technology, applied in the field of automation, can solve the problems of increasing the cost of frequency converters, high prices, and limited wide application of frequency converters, and achieve the effect of reducing costs
Active Publication Date: 2018-04-20
INVT POWER ELECTRONICS SUZHOU CO LTD
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Problems solved by technology
However, the price of PLC hardware modules is relatively high, which will increase the cost of the inverter
The built-in PLC hardware module in the frequency converter will also increase the size of the frequency converter, which limits the wide application of frequency converters with built-in PLC hardware modules.
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[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0031] The embodiment of the present invention provides a method and device for realizing the programmable logic control function of a frequency converter, and a frequency converter, which are used to realize software logic control in the frequency converter and reduce the cost of the frequency converter. At the same time, the embodiment of the present invention also provides an editable logic control processing method of a frequency converter and a digital signal p...
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The invention discloses a method and a device for realizing the programmable logic control function of a frequency converter as well as the frequency converter and aims at realizing software logic control in the frequency converter and reducing the cost of the frequency converter. The method comprises defining a logic control region in the digital signal processor (DSP) of the frequency converter and setting a PLC program analysis module in the DSP, receiving a downloading instruction which comprises a PLC file obtained by virtue of development in an upper computer, loading the PLC file to the logic control region so that the DSP is capable of analyzing the PLC file by use of the PLC program analysis module to obtain an analysis result, and applying the analysis result to logic control on the frequency converter and / or an external device.
Description
technical field [0001] The invention relates to the technical field of automation, in particular to a method, a device and a frequency converter for realizing the programmable logic control function of a frequency converter. Background technique [0002] Programmable logic controller (PLC, Programmable Logic Controller) and frequency converter are common components on automation equipment. In the prior art, the PLC hardware module is usually built into the frequency converter or the frequency converter is externally connected to a PLC device to realize the PLC control function, such as figure 1 As shown, at present, the PLC hardware module is built in the frequency converter, integrated with the joint control operation, and logically controls the frequency converter and various external devices. However, the price of the PLC hardware module is relatively high, which will increase the cost of the inverter. The built-in PLC hardware module in the frequency converter will als...
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IPC IPC(8): H02M1/00G05B19/05
CPCG05B19/058G05B2219/163
Inventor 许晋宁刘全丹
Owner INVT POWER ELECTRONICS SUZHOU CO LTD