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Frequency Converter and Its Frequency Given Signal Fault Detection Method

A technology of given signal and frequency converter, applied in the field of frequency converter control, can solve the problem of frequency signal failure of frequency converter, which cannot be detected in time.

Active Publication Date: 2019-02-26
CHONGQING CHENGYI ELECTROMECHANICAL EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The invention proposes a fault detection method for a frequency converter and its frequency given signal, which solves the problem in the prior art that the fault cannot be detected in time when a fault occurs when the frequency signal of the converter is given

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  • Frequency Converter and Its Frequency Given Signal Fault Detection Method
  • Frequency Converter and Its Frequency Given Signal Fault Detection Method

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Embodiment Construction

[0016] The following describes the present invention clearly and completely in conjunction with the technical solutions of the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0017] The frequency converter of the first embodiment of the present invention is such as figure 1 As shown, it includes a control unit 1, a rising signal terminal 2 and a falling signal terminal 3. The rising signal terminal 2 and the falling signal terminal 3 are respectively connected to the rising signal monitoring terminal 5 and the falling signal monitoring terminal 6 inside the inverter. Both the rising signal monitoring terminal 5 and the falling signal monitoring terminal 6 a...

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Abstract

The invention relates to the frequency conversion control technology field and discloses a frequency converter. The frequency converter comprises a control unit, a rising signal end and a falling signal end, wherein the rising signal end and the falling signal end are respectively connected with a rising signal monitoring end and a falling signal monitoring end in a frequency converter, the rising signal monitoring end and the falling signal monitoring end are connected with a control unit, an alarm device, a constant speed signal end and a constant speed signal monitoring end connected with the constant speed signal end are further comprised, the constant speed signal monitoring end and the alarm device are connected with the control unit, the rising signal monitoring end, the falling signal monitoring end and the constant speed signal monitoring end are used for feeding monitoring signals to the control unit, and the alarm device is triggered to alarm when two and more signals are simultaneously received by the control unit within pre-determined time delay or no signal is received. The invention further discloses a frequency-given signal fault detection method of the frequency converter. Through the frequency converter, fault detection on the frequency converter with frequency-given signals can be carried out, and the frequency converter and corresponding external connection equipment can be effectively protected.

Description

Technical field [0001] The invention relates to the technical field of frequency converter control, in particular to a frequency converter and a method for detecting faults of a given frequency signal thereof. Background technique [0002] The frequency conversion speed control technology is currently a very widely used advanced intelligent control technology; the frequency setting in the frequency converter control technology generally includes UP / DOWN, PID, analog (current or voltage signal), and communication mode given. Up / down (UP / DOWN) setting uses two switches or pulse signals. Between the two signal conversions, it is a constant speed process (maintaining the current frequency and speed). When there is no up or down signal, it is constant speed In this way, when the true rising or falling signal is lost, the frequency converter always maintains a constant frequency, and the failure of the rising or falling signal loss can not be detected in time in an automatic frequency...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/00
CPCG01R31/00
Inventor 孙智虎
Owner CHONGQING CHENGYI ELECTROMECHANICAL EQUIP
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