CN206111512U - Air compressor's frequency conversion control circuit - Google Patents

Air compressor's frequency conversion control circuit Download PDF

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Publication number
CN206111512U
CN206111512U CN201621057922.7U CN201621057922U CN206111512U CN 206111512 U CN206111512 U CN 206111512U CN 201621057922 U CN201621057922 U CN 201621057922U CN 206111512 U CN206111512 U CN 206111512U
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CN
China
Prior art keywords
output point
frequency conversion
air compressor
coil
control
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Active
Application number
CN201621057922.7U
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Chinese (zh)
Inventor
白向阳
邱环环
黄瑞
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen Greatall Energy Technology Co Ltd
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Shenzhen Greatall Energy Technology Co Ltd
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Priority to CN201621057922.7U priority Critical patent/CN206111512U/en
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Abstract

The utility model is suitable for an air compressor system control technical field provides an air compressor's frequency conversion control circuit, including setting up in the start -up output point Q0.0 of PLC controller, stopping output point Q0.1, frequency conversion control output point Q1.0 and public power end COM, start output point Q0.0 and connect start control coil KA1, stop output point Q0.1 connection disactivation control coil KA2, frequency conversion control output point Q1.0 connection frequency conversion control coil KA3, start output point Q0.0 with it has stop control coil KA2's normally closed contact KA21 to establish ties between the start control coil KA1, start control coil KA1's normally open contact connects the power end of converter, the messenger of frequency conversion control coil KA3's normally open contact KA31 connection converter can hold EN, makes the frequency conversion control signal of PLC controller is received to the converter. The utility model provides a current general adoption of air compressor at the uniform velocity control, can not carry out the power output control that corresponds according to the load, cause the problem of the waste of the energy.

Description

A kind of frequency conversion control circuit of air compressor
Technical field
The utility model belongs to air compressor system control technology field, more particularly to a kind of frequency conversion of air compressor Control circuit.
Background technology
Air compressor is the basic product of the modernization of industry, and predominantly industrial pneumatic system provides source of the gas power, is gas The nucleus equipment of dynamic system, in some source of the gas supply systems, need by supply gas pressure control at one it is constant within the scope of To meet industrial requirements.Air compressor is powerful device, and unit interval energy consumption is larger.
Existing air compressor is typically adopted and at the uniform velocity controlled, it is impossible to carry out corresponding power output control according to load, Cause the waste of the energy.
Utility model content
The utility model embodiment provides a kind of frequency conversion control circuit of air compressor, it is intended to solve existing air pressure Contracting machine is typically adopted and at the uniform velocity controlled, it is impossible to is carried out corresponding power output control according to load, is caused the problem of the waste of the energy.
The utility model embodiment is achieved in that a kind of frequency conversion control circuit of air compressor,
Wherein, export including being arranged at the startup output point Q0.0 of PLC, stopping output point Q0.1, VFC Point Q1.0 and common electrical source COM;
Common electrical source COM connects power firestreak end L, and the startup output point Q0.0 connections start control coil KA1, the Q0.1 connections of stopping output point stopping control coil KA2, VFC output point Q1.0 connection VFC coil KA3, The other end of described coil KA1, KA2, KA3 is in parallel to access zero-power line end N, and the startup output point Q0.0 starts control with described The normally-closed contact KA21 for stopping control coil KA2 is in series between coil KA1 processed;
The normally opened contact KA11 of the startup control coil KA1 connects the power end of frequency converter, the VFC coil The normally opened contact KA31 of KA3 connects Enable Pin EN of frequency converter so that the frequency converter receives the VFC letter of PLC Number.
Further, the zero line of the power supply is additionally provided with fuse F4.
Further, PLC model S7-400, frequency converter model G150.
The frequency conversion control circuit of the air compressor of the utility model embodiment, by PLC and variable-frequency motor Between frequency conversion control circuit and frequency converter are set, the output of air compressor is controlled according to the frequency change control signal of PLC Power so that air compressor can save the power consumption of air compressor according to the power output of loaded self-adaptive, it is to avoid The waste of the energy.
Description of the drawings
Fig. 1 is the frequency conversion control circuit schematic diagram of the air compressor that the utility model embodiment is provided;
Fig. 2 is the frequency conversion control circuit frequency converter end connection signal of the air compressor that the utility model embodiment is provided Figure.
Specific embodiment
In order that the purpose of this utility model, technical scheme and advantage become more apparent, below in conjunction with accompanying drawing and enforcement Example, is further elaborated to the utility model.It should be appreciated that specific embodiment described herein is only to explain The utility model, is not used to limit the utility model.
It should be noted that when element is referred to as " being fixed on " or " being arranged at " another element, it can be directly another On one element or may be simultaneously present centering elements.When an element is known as " being connected to " another element, it can To be directly to another element or may be simultaneously present centering elements.
Also, it should be noted that the orientation term such as left and right, upper and lower in the utility model embodiment, is only relative each other Concept or be reference with the normal operating condition of product, and should not be regarded as restrictive.
With reference to shown in Fig. 1 and Fig. 2, a kind of frequency conversion control circuit of air compressor that the utility model embodiment is provided,
Including the startup output point Q0.0, stopping output point Q0.1, the VFC output point that are arranged at PLC Q1.0 and common electrical source COM;
Common electrical source COM connects power firestreak end L, and the startup output point Q0.0 connections start control coil KA1, the Q0.1 connections of stopping output point stopping control coil KA2, VFC output point Q1.0 connection VFC coil KA3, The other end of described coil KA1, KA2, KA3 is in parallel to access zero-power line end N, and the startup output point Q0.0 starts control with described The normally-closed contact KA21 for stopping control coil KA2 is in series between coil KA1 processed;
The normally opened contact KA11 of the startup control coil KA1 connects the power end of frequency converter, the VFC coil The normally opened contact KA31 of KA3 connects Enable Pin EN of frequency converter so that the frequency converter receives the VFC letter of PLC Number;
Specific mechanism is as follows:
After variable-frequency motor M normally starts, when operating personnel press VFC button, PLC is exported from Q1.0 Point output motor frequency change control signal, starts VFC coil KA3 and obtains electric so that the normally opened contact of VFC coil KA3 KA31 is closed at frequency converter end so that the enable control end EN path of frequency converter is connected, and frequency converter starts to receive PLC end The frequency change control signal of transmission carries out the frequency control of variable-frequency motor M, so as to pass through transmission according to load control and variable-frequency motor The power output and output flow of the air compressor of mechanism's connection, reaches the purpose of air compressor VFC, due to adopting With VFC motor and air compressor, the effect of loaded self-adaptive is reached, according to load output power adaptable therewith Size, it is to avoid also saved the power consumption of air compressor to be more than the power output for loading when loading less;
Wherein,
When operating personnel press start button, PLC exports enabling signal, control line is started afterwards from Q0.0 output points Circle KA1 obtains electric, starts the normally opened contact KA11 closures of control coil KA1, and converter power supply is connected, and variable-frequency motor is installed acquiescence and set Speed rotation is put,
When operating personnel press stop button, PLC exports stop signal, control line is stopped afterwards from Q0.1 output points Circle KA2 obtains electric, and normally-closed contact KA21 disconnects, and starts control coil KA1 dead electricity, starts the normally opened contact KA11 of control coil KA1 Disconnect, converter power supply disconnects, variable-frequency motor stops operating.
In the utility model embodiment, the zero line of the power supply is additionally provided with fuse F4, control circuit is risen and is protected Shield is acted on.
Preferably, as one embodiment of the present utility model, PLC model S7-400, the frequency conversion Device model G150, it is ensured that air compressor reliability of operation.
The frequency conversion control circuit of the air compressor that the utility model embodiment is provided, by PLC and frequency conversion Frequency conversion control circuit and frequency converter are set between motor, air compressor is controlled according to the frequency change control signal of PLC Power output so that air compressor can save the power consumption of air compressor according to the power output of loaded self-adaptive, keep away Exempt from the waste of the energy, reduce the production cost of enterprise.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model Any modification, equivalent and improvement made within the spirit and principle of utility model etc., should be included in the utility model Protection domain within.

Claims (3)

1. a kind of frequency conversion control circuit of air compressor, it is characterised in that including the startup output point for being arranged at PLC Q0.0, stopping output point Q0.1, VFC output point Q1.0 and common electrical source COM;
Common electrical source COM connects power firestreak end L, and the startup output point Q0.0 connections start control coil KA1, stop Only output point Q0.1 connections stop control coil KA2, VFC output point Q1.0 connection VFC coil KA3, the line The other end of circle KA1, KA2, KA3 is in parallel to access zero-power line end N, the startup output point Q0.0 and the startup control coil The normally-closed contact KA21 for stopping control coil KA2 is in series between KA1;
The normally opened contact KA11 of the startup control coil KA1 connects the power end of frequency converter, the VFC coil KA3's Normally opened contact KA31 connects Enable Pin EN of frequency converter so that the frequency converter receives the frequency change control signal of PLC.
2. the frequency conversion control circuit of air compressor according to claim 1, it is characterised in that the zero line of the power supply It is additionally provided with fuse F4.
3. the frequency conversion control circuit of air compressor according to claim 1, it is characterised in that the PLC type Number be S7-400, frequency converter model G150.
CN201621057922.7U 2016-09-13 2016-09-13 Air compressor's frequency conversion control circuit Active CN206111512U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201621057922.7U CN206111512U (en) 2016-09-13 2016-09-13 Air compressor's frequency conversion control circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201621057922.7U CN206111512U (en) 2016-09-13 2016-09-13 Air compressor's frequency conversion control circuit

Publications (1)

Publication Number Publication Date
CN206111512U true CN206111512U (en) 2017-04-19

Family

ID=58519950

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201621057922.7U Active CN206111512U (en) 2016-09-13 2016-09-13 Air compressor's frequency conversion control circuit

Country Status (1)

Country Link
CN (1) CN206111512U (en)

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