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Frequency converter keyboard generalized processing method

A processing method and frequency converter technology, which is applied in the field of frequency converters, can solve the problems that the frequency converter keyboard cannot be used universally, and achieve the effects of improving practical value, low cost, and accurate parameter setting

Active Publication Date: 2019-04-02
WISDRI WUHAN AUTOMATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a universal processing method for inverter keyboards, which has a wide control range, good stability, high precision, and low cost. Reduce the manufacturing cost of the keyboard and improve the practical value of the inverter

Method used

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Embodiment Construction

[0025] The embodiments of the present invention will be described in detail below, however, the embodiments of the present invention are not limited thereto. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0026] In an embodiment of the present invention: a generalized processing method for a frequency converter keyboard is provided, including the following steps:

[0027] The first step: Inverter parameters and hardware initialization: initialize the hardware related to the motor drive and some static parameters; the initialization parameters include MCP4, the I / O port related to the PWM output of MCP4, the interrupt related to the PWM output of MCP4, Phase accumulator, phase increment register, amplitude modulation coefficient, various status flags and U / f curve parameter table generated by SPWM;

[0028] Step 2...

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Abstract

The invention discloses a frequency converter keyboard generalized processing method. For the problems that an existing frequency converter keyboard is single in use function, poor in stability and the like, the frequency converter keyboard generalized processing method provided by the invention uses SPMC75F2313A as a master control CPU of the whole processing process. The frequency converter keyboard generalized processing method comprises the following steps: frequency converter parameter and hardware initialization, frequency converter keyboard parameter calculation, smoothing processing for keyboard frequency changes, PWM periodic interrupt services, an analog keyboard signal interface module, a frequency conversion system error detection protection module, keyboard signal processing,display information processing, and motor operation parameter reading and writing module setting; and finally, a master controller regulates and controls keyboard parameters according to motor operation parameters to ensure that the keyboard parameters are correct, so that the frequency converter keyboard generalized processing method is suitable for the use of a universal frequency converter; andthe whole process is clear in processing, the parameter setting is accurate, the regulation and control range of a frequency converter is wide, the stability is good, the precision is high, the costis low, and the problem that the existing frequency converter keyboard cannot realize the generalized use function is solved, the manufacturing cost of the frequency converter keyboard is saved, and the practical value of the frequency converter is improved.

Description

technical field [0001] The invention relates to the technical field of frequency converters, in particular to a method for generalizing keyboards of frequency converters. Background technique [0002] The inverter keyboard is a control device used for inverter debugging. It uses frequency conversion technology and microelectronics technology to control the power control equipment of AC motors by changing the frequency of the motor's working power supply. Usually, the frequency converter is equipped with a keyboard, and the general keyboard is divided into two types: LED and LCD. The user can view and set the function parameters of the frequency converter through the keyboard. However, the keyboard usually needs to be matched with a specific inverter, that is, the inverters of different manufacturers generally use their own designed keyboards, but there are often many inverter models produced by the same manufacturer, and there is often only one type of keyboard, which means...

Claims

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Application Information

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IPC IPC(8): H02M1/00H02P27/04
CPCH02M1/00H02P27/04
Inventor 张旭梅梅意安王胜勇
Owner WISDRI WUHAN AUTOMATION