Frequency converter especially for wire drawing machine and control method thereof
A control method and frequency converter technology, applied in the field of frequency converters, can solve the problems of complicated programming and calculation, low accuracy, difficult to popularize and apply, etc., and achieve the effect of strong practicability and reduction of production costs.
Inactive Publication Date: 2011-12-07
DONGGUAN KELEE STEEL WIRE
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Problems solved by technology
[0005] Disadvantages of the status quo of proportional linkage of the frequency converter on the straight wire drawing machine: program writing and program control are completed through PLC, PLC programming and calculation are more complicated, and a lot of data is collected by on-site commissioning personnel during the programming process. The accuracy is low. In addition, the compiled program can be used on this machine, but it cannot be used on another machine after being copied. The versatility is poor, and it is difficult to popularize and apply.
Method used
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[0034] In order to facilitate the understanding of those skilled in the art, the present invention will be further described below in conjunction with the embodiments and accompanying drawings, and the contents mentioned in the embodiments are not intended to limit the present invention.
[0035] as attached Figures 1 to 3 As shown, a special frequency converter for a wire drawing machine, the special frequency converter for a wire drawing machine is equipped with an output frequency f n+1 The operation program, the operation steps include:
[0036] a) Obtain fine-tuning correction coefficient k 0 data, get the motor rated speed n of the nth wire drawing unit n data, transmission ratio i n data, bobbin diameter d n data, mold hole diameter D n data, get the motor rated speed n of the n+1th wire drawing unit n+1 data, transmission ratio i n+1 data, bobbin diameter d n+1 data, mold hole diameter D n+1 The data;
[0037] b) Calculate the total correction coefficient k ...
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The invention relates to the technical field of frequency converters, in particular to a frequency converter especially for a wire drawing machine and a control method thereof. An operation program is set in the frequency converter, and the frequency converter can be put into use without re-writing and debugging the program, thereby eliminating complex PLC programming and calculation; the law of wire drawing is worked out into a formula to be put inside the frequency converter, the complex calculation is completed by the frequency converter, and the frequency converter can be used by inputting data, thereby eliminating a touch screen and reducing production cost. In addition, a general electrician can debug a machine according to the manual of the frequency converter, and the practicalityis very strong; the invention points out the direction for the development of the frequency converter especially for the wire drawing machine, and provides a good basis for low-cost promotion and application of straight-line wire drawing machines.
Description
Technical field: [0001] The invention relates to the technical field of frequency converters, in particular to a special frequency converter for wire drawing machines and a control method thereof. Background technique: [0002] The existing frequency converters can be divided into general-purpose and special-purpose. Most general-purpose frequency converters are only suitable for single machine control, and the functions of two or more linkages are not very complete. The functions of various brands of frequency converters are limited. The focus is different; for special-purpose inverters such as injection molding machines launched by various manufacturers, some manufacturers have also introduced inverters with comparison functions and arithmetic functions. This inverter has a step forward in the linkage of two or more sets. [0003] The straight wire drawing machine generally includes two or more wire drawing units. The wire drawing unit includes a motor that drives the wire...
Claims
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IPC IPC(8): H02P5/74
Inventor 陈文学
Owner DONGGUAN KELEE STEEL WIRE