CN205864313U - Automatically control the asynchronous motor turned to - Google Patents

Abstract

This utility model relates to a kind of asynchronous motor automatically controlling and turning to, can turn to by auto-controlled motor in running, use the action of the Miniature direct current relay of electronic switching circuit or mcu programming control band transfer contact, Resistor-Capacitor Unit is accessed in two input ports of single-chip microcomputer, so that user runs the time from Row sum-equal matrix, the contact of relay connects the end points of motor difference winding respectively.

Description

Automatically control the asynchronous motor turned to

Technical field

This utility model relates to a kind of asynchronous motor automatically controlling and turning to.

Background technology

The AC asynchronous motor of modern production, generally uses two-direction switch to change rotation direction.These manually fall along opening The contact closed, since it is desired that contact instability by the biggest electric current, it is easy to be burned out.My Application No. The utility application of 2016203539530, it is provided that a kind of monophase machine using Miniature direct current relay to construct is used Two-direction switch, solve single-phase motor manual two-direction switch contact instability, the problem burning contact.

Summary of the invention

The purpose of this utility model, it is simply that provide a kind of and can automatically control the asynchronous electric turned in running Machine.

Realize technical measures of the present utility model, it is simply that the small-sized DC using mcu programming to control band transfer contact continues The action of electrical equipment, the contact of relay connects the different end points of motor difference winding respectively, it is achieved asynchronous motor ran Journey automatically controls the function turned to.

The output of single-chip microcomputer controls the action of Miniature direct current relay, and two input ports are accessed Resistor-Capacitor Unit and (can be used Potentiometer substitutes fixed resistance, in order to user runs the time from Row sum-equal matrix).

The beneficial effects of the utility model, it is simply that compact conformation, easy to operate, it is possible to automatic control electric in running The rotation direction of motivation, user can run the time from Row sum-equal matrix as required.

Accompanying drawing illustrates:

Fig. 1 is the circuit of the asynchronous motor automatic reversing apparatus using Single-chip Controlling Miniature direct current relay structure Schematic diagram；

Fig. 2 is the relay of the monophase machine automatic reversing apparatus using Single-chip Controlling Miniature direct current relay structure Contact lug figure；

In each figure, label symbol is as follows: DPJ is single-chip microcomputer；W is resistance or potentiometer in limited time；C is electric capacity；R is resistance； JZ1, JZ2, JZ3 are Miniature direct current relay；ZL is main winding；FL is auxiliary winding；～be alternating current power supply symbol.

For simplifying explanation, figure eliminates the centrifugal switch of such as monophase machine, capacitor, rosette and control power supply etc. The parts unrelated with utility model content.

Detailed description of the invention:

Detailed description of the invention of the present utility model is further described below in conjunction with accompanying drawing:

Embodiment one: use the automatic reverse dress of the monophase machine of Single-chip Controlling Miniature direct current relay structure Put.Using mcu programming to control the action of three Miniature direct current relays, two input ports of single-chip microcomputer connect current potential respectively Device and the delay circuit of electric capacity composition.After powering on, first single-chip microcomputer starts JZ1 and JZ3, and drags down two input ports respectively, electronic Machine forward runs；Then start to read the state of the two input port, when the first input port level is upgraded to high level, control JZ1 release starts JZ2 simultaneously, and motor changes inverted running into, after the second input port level is upgraded to high level, controls relay All release, completes the most complete operation.

Embodiment two: use the repeatedly automatic reverse dress of the monophase machine of Single-chip Controlling Miniature direct current relay structure Put.Circuit structure is essentially identical with upper example, and difference is that the second input port level is upgraded to the time of high level much larger than first Input port level is upgraded to the time of high level, remembers the time of change, in order to repeatedly while changing rotation direction for the first time Change the open/close states of JZ1 and JZ2, until end of run.

Embodiment three: use the three phase electric machine automatic reversing apparatus of Single-chip Controlling Miniature direct current relay structure.This Example only with two Miniature direct current relays, is passed directly into a phase power supply (such as A phase) phase winding of motor, then one The normally opened point of relay and normally closed point, connect the normally closed point of another relay and normally opened point respectively, connect other two-phase power supply, Other two phase windings of motor (transfer point of two relays connect respectively), just constitutes the automatic reverse of three phase electric machine Device.

Claims (1)

1. one kind automatically controls the asynchronous motor turned to, it is characterised in that: use mcu programming to control band transfer contact The action of Miniature direct current relay, the contact of relay connects the different end points of motor difference winding respectively.