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Frequency converter integrated with PLC function and method for realizing integrated PLC function of frequency converter

A frequency converter and frequency converter control technology, applied in the field of frequency converters, can solve the problems of lack of universality of hardware platform and troublesome programming programs, and achieve the effects of shortening the execution cycle, facilitating programming, and improving execution efficiency

Inactive Publication Date: 2019-01-15
CHANGSHU SWITCHGEAR MFG CO LTD (FORMER CHANGSHU SWITCHGEAR PLANT)
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Problems solved by technology

When the inverter changes the processor model, the executable file needs to be recompiled according to different hardware platforms, which does not have the versatility of the hardware platform, causing troubles in programming programs

Method used

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  • Frequency converter integrated with PLC function and method for realizing integrated PLC function of frequency converter
  • Frequency converter integrated with PLC function and method for realizing integrated PLC function of frequency converter
  • Frequency converter integrated with PLC function and method for realizing integrated PLC function of frequency converter

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Embodiment Construction

[0040] In view of the deficiencies in the prior art, the idea of ​​the present invention is to set a PLC virtual machine in the frequency converter control system, and the PLC virtual machine unit is used to run the PLC byte code and the input signal to obtain the operation result, and the obtained The running results are output to the inverter control program and / or output terminals, so as to realize the integration of PLC functions in the inverter. The PLC bytecode is the object code that can run on the PLC virtual machine unit, and the PLC virtual machine uses the stack structure to simulate and realize the operation function.

[0041] image 3 It shows the first embodiment of the frequency converter with integrated PLC function of the present invention. The frequency converter includes a frequency converter control system and a main circuit system of the frequency converter. The main circuit system of the frequency converter is a power circuit for driving the motor. The c...

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Abstract

The invention discloses a frequency converter integrated with PLC function. The frequency converter comprises a frequency converter control system. The frequency converter control system comprises a frequency converter control program and a PLC module for executing the PLC function. The PLC module comprises a PLC virtual machine unit for running a PLC byte code and an input signal to obtain a running result, and outputting the obtained running result. The invention also discloses a method for realizing the integrated PLC function of the frequency converter. The frequency converter integrated with the PLC function and the method for realizing the integrated PLC function of the frequency converter can effectively shorten the execution cycle of the PLC control program and improve the execution efficiency of the PLC control program while satisfying the versatility of various types of processors.

Description

technical field [0001] The invention relates to a frequency converter integrated with PLC functions. Background technique [0002] The aggravation of the world's energy crisis has made the theme of energy saving and loss deeply rooted in the hearts of the people. All countries in the world are paying attention to energy saving, which also drives the production demand and capacity release of low-power inverters, which makes the demand for innovation and innovation ability. The inverter industry has achieved long-term sustainable development. [0003] Simple and miniaturized inverters are concentrated in the low-power segment, where they are widely used in the low-power segment and are in great demand. Programmable logic controller (PLC, Programmable Logic Controller) and frequency converter are common components on automation equipment, and the two are often used in combination. [0004] Such as figure 1 As shown, a prior art integrates a logic control module in a frequenc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/05
Inventor 陈鸽李志鹏
Owner CHANGSHU SWITCHGEAR MFG CO LTD (FORMER CHANGSHU SWITCHGEAR PLANT)
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