CN202025196U - Circuit for realizing two-place control of motor - Google Patents

Abstract

The utility model discloses a circuit for realizing two-place control of a motor. The circuit comprises a three-phase power (L1, L2 and L3). The three-phase power (L1, L2 and L3) is connected with an air switch QF; the air switch QF is connected with an AC (alternating current) contactor KM; the AC contactor KM is connected with a motor M to be controlled; the AC contactor KM is sequentially connected with a stop button SB21 and a stop button SB11; the stop button SB11 is connected with the air switch QF; and the AC contactor KM is connected with a start button SB12 and a start button SB22 in parallel. The utility model discloses a circuit for realizing two-place control of a motor. The circuit can effectively perform the two-place control of the large electric equipment in the factory, so that when an operator goes to the other field from one field, the operator does not need to control the motor in the field. Therefore, the time and the electric energy are saved greatly, and the working efficiency is improved.

Description

A kind of circuit that is used to realize the control of motor two places

Technical field

The utility model relates to the motor technology field, particularly relates to a kind of circuit that is used to realize the control of motor two places.

Background technology

At present, the illumination in stair, tunnel etc. need at one end be opened, by after close.This just requires can both control at two ends.Generally realize with two " single-pole double-throw switch (SPDT)s ".Two leads are arranged between two " single-pole double-throw switch (SPDT)s ": when two switches were received same lead, circuit was connected, and lamp is bright; When two switches were received on the different leads, circuit disconnected, and electric light extinguishes.

But for the large-scale electric equipment of factory, what great majority adopted is place's control circuit, thereby when the operator goes another on-the-spot from a scene, want to control the equipment at original scene, must get back to the original place like this, wasted a large amount of time and electric energy, be unfavorable for increasing work efficiency.

Therefore, press at present and develop a kind of circuit, it can be effectively carries out two places control to the large-scale electric equipment of factory, thereby when the operator goes another on-the-spot from a scene, need not to get back to the original place controls, thereby can save a large amount of time and electric energy, help increasing work efficiency.

The utility model content

In view of this, the purpose of this utility model provides a kind of circuit that is used to realize the control of motor two places, it can be effectively carries out two places control to the large-scale electric equipment of factory, thereby when the operator goes another on-the-spot from a scene, need not to get back to the original place and control, thereby can save a large amount of time and electric energy, help increasing work efficiency, therefore can produce universally widely, be of great practical significance.

For this reason, the utility model provides a kind of circuit that is used to realize the control of motor two places, it is characterized in that, include three-phase supply (L1, L2, L3), described three-phase supply (L1, L2, L3) joins with an air switch QF, described air switch QF and an A.C. contactor KM join, and described A.C. contactor KM and the motor M that needs control join;

Described A.C. contactor KM meets stop button SB21, stop button SB11 successively, and described stop button SB11 meets air switch QF, and described A.C. contactor KM and start button SB12, start button SB22 are in parallel.

Wherein, be provided with an electrothermal relay FR between the motor M of described A.C. contactor KM and needs control.

Wherein, be provided with a fuse FUI between described stop button SB11 and the air switch QF.

Wherein, the L3 power end of described three-phase supply (L1, L2, L3) meets described air switch QF, fuse FUI, electrothermal relay FR, a described stop button SB11, described stop button SB21 successively;

Described stop button SB21 meets described start button SB22, described A.C. contactor KM, a fuse FUI and described air switch QF successively;

Described start button SB22 two ends and described start button SB12 are parallel with one another.

Wherein, described motor M's is ground wire grounded.

The technical scheme that is provided by above the utility model as seen, compared with prior art, the utility model provides a kind of circuit that is used to realize the control of motor two places, it can be effectively carries out two places control to the large-scale electric equipment (as motor) of factory, thereby when the operator goes another on-the-spot from a scene, need not to get back to the original place controls, thereby can save a large amount of time and electric energy, help increasing work efficiency, therefore can produce universally widely, be of great practical significance.

In addition,, need control start and stop, can not simply use disconnecting link switch etc. with the secondary line circuit for the large-scale electric equipment of factory.Because need the local more of control, perhaps apart from reason too far away, this control circuit can compare electricity wasting.The utility model is finished the control of backbone by using A.C. contactor KM, and secondary line gauge tap (air switch QF etc.) is set in a plurality of places simultaneously.For example, control such as the two places of three-phase illumination, motor etc. needs to use A.C. contactor KM to control, and when distance is farther, for the utility model, just can use the industrial network communication technology to finish the transmission and the control of signal.

Description of drawings

A kind of schematic diagram that is used to realize the circuit of motor two places control that Fig. 1 provides for the utility model;

A kind of concrete wiring schematic diagram that is used to realize the circuit of motor two places control that Fig. 2 provides for the utility model.

Embodiment

In order to make those skilled in the art person understand the utility model scheme better, the utility model is described in further detail below in conjunction with drawings and embodiments.

A kind of schematic diagram that is used to realize the circuit of motor two places control that Fig. 1 provides for the utility model.

Referring to Fig. 1, the utility model provides a kind of ultracapacitor composite module voltage detecting circuit, include three-phase supply (L1, L2, L3), described three-phase supply (L1, L2, L3) joins with an air switch QF, the L3 power end of described three-phase supply (L1, L2, L3) meets described air switch QF, fuse FUI, electrothermal relay FR, a stop button SB11, stop button SB21 successively, and described stop button SB21 meets start button SB22, A.C. contactor KM, a fuse FUI and described air switch QF successively.

In addition, described start button SB22 two ends are also parallel with one another with a start button SB12, and it is a) also parallel with one another with described start button SB22 two ends that described A.C. contactor KM(is specially the main contact of KM.

Referring to Fig. 1; described air switch QF and described A.C. contactor KM(are specially the auxiliary normally opened contact b of KM) join; described A.C. contactor KM meets described electrothermal relay FR successively and needs the motor M of control to join; described motor M ground connection (the ground wire PE line ground connection of motor service cable); thereby effectively motor is carried out the multiple current protection, guaranteed the serviceable life of motor.

In the utility model, described start button SB12 and SB22 are the two places start button, and they are parallel with one another.Described stop button SB11 and SB21 are the two places stop button, and they are connected mutually.

Need to prove that for the utility model, the overload protection of motor is finished by electrothermal relay FR, and the fuse FUI in the circuit mainly is the effect of motor being played short-circuit protection.

For the utility model, for motor being carried out two places control, (as first ground) goes another scene (as second ground) time to control in real time promptly from a scene, wherein, SB11 and SB12 are used for the control of first ground, and SB12 and SB22 are used for the control of second ground, and specific operation process is as follows:

One, control motor start-up process:

At first, the air switch QF that closes connects three-phase supply (L1, L2, L3);

Then, pressing start button SB12 or SB22(specifically is which button is principle with easy to operate), make the coil electricity adhesive of A.C. contactor KM, the main contact closure of KM, realization trigger motor M operation, the auxiliary normally opened contact b self-locking of KM simultaneously.

Two, control motor stopped process;

At first, pressing stop button SB11 or SB21(specifically is which button is principle with the handled easily), make the coil losing electricity of A.C. contactor KM, the contact of KM all discharges so, A.C. contactor KM disconnects non-conductive, thereby makes motor M outage, and motor M is out of service.

Referring to Fig. 2, a kind of concrete wiring schematic diagram that is used to realize the circuit of motor two places control that Fig. 2 provides for the utility model.In the drawings as can be known, the circuit of realization motor two places that the utility model provides control includes an air switch 3, two fuses 4, A.C. contactor 5, electrothermal relay 2, two stop button 6(are SB11 and SB21 shown in Figure 1), two start button 7(are SB12 and SB22 shown in Figure 1) and motor 1, described air switch 4 is connected with the three-phase supply of outside.

As shown in Figure 2, described air switch 3 is connected with two fuses 4, described two fuses 4 join with an A.C. contactor 5 and an electrothermal relay 2 respectively, described electrothermal relay 2 connects motor 1 respectively and two stop button 6(are SB11 and SB21 shown in Figure 1), described A.C. contactor 5 connects described air switch 3, described electrothermal relay 2 respectively, two start button 7(are SB12 and SB22 shown in Figure 1).Described two stop button 6(are SB11 and SB21 shown in Figure 1) mutually series connection, be SB12 and SB22 shown in Figure 1 with described two start button 7(then) parallel circuit formed is cascaded again.

Need to prove that for the circuit that is used to realize the control of motor two places that the utility model provides, convenient for operating motor, a motor apparatus has several control handwheels or push-button station, can operate control everywhere.Realize that the point control of many ground then uses start button is in parallel in operation circuit, and the stop button series connection is used.

For the utility model, according to the characteristic of electric original paper, utilize circuit design mode cleverly, build simple and practical circuit.Realization realizes same control mode to various electrical appliances in the diverse location place, comprise simple startup, stop, and perhaps expands to complicated parameter adjusting etc., guarantees the stable of equipment operation, and control accurately.

The utility model has been realized effectively raising the real-time and the work efficiency of monitoring to carrying out the control in a plurality of places with an electrical appliance.Meanwhile, effectively saved the time that operating personnel walk and wasted repeatedly.In line with reliable principle, the circuit that the utility model provides will have very big application in daily life and commercial production, no matter be lighting field or power control field, all will improve very big convenience to control.

In sum, compared with prior art, a kind of circuit that is used to realize the control of motor two places that the utility model provides, it can be effectively carries out two places control to the large-scale electric equipment (as motor) of factory, thereby when the operator goes to another scene from a scene, need not to get back to the original place and control, thereby can save a large amount of time and electric energy, therefore help increasing work efficiency, can produce universally widely, be of great practical significance.

In addition,, need control start and stop, can not simply use disconnecting link switch etc. with the secondary line circuit for the large-scale electric equipment of factory.Because need the local more of control, perhaps apart from reason too far away, this control circuit can compare electricity wasting.The utility model is finished the control of backbone by using A.C. contactor KM, and secondary line gauge tap (air switch QF etc.) is set in a plurality of places simultaneously.For example, control such as the two places of three-phase illumination, motor etc. needs to use A.C. contactor KM to control, and when distance is farther, for the utility model, just can use the industrial network communication technology to finish the transmission and the control of signal.

The above only is a preferred implementation of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.

Claims (5)

1. circuit that is used to realize the control of motor two places, it is characterized in that, include three-phase supply (L1, L2, L3), described three-phase supply (L1, L2, L3) joins with an air switch QF, described air switch QF and an A.C. contactor KM join, and described A.C. contactor KM and the motor M that needs control join;

Described A.C. contactor KM meets stop button SB21, stop button SB11 successively, and described stop button SB11 meets air switch QF, and described A.C. contactor KM and start button SB12, start button SB22 are in parallel.

2. circuit as claimed in claim 1 is characterized in that, be provided with an electrothermal relay FR between the motor M of described A.C. contactor KM and needs control.

3. circuit as claimed in claim 1 is characterized in that, is provided with a fuse FUI between described stop button SB11 and the air switch QF.

4. circuit as claimed in claim 1, it is characterized in that the L3 power end of described three-phase supply (L1, L2, L3) meets described air switch QF, fuse FUI, electrothermal relay FR, a described stop button SB11, described stop button SB21 successively;

Described stop button SB21 meets described start button SB22, described A.C. contactor KM, a fuse FUI and described air switch QF successively;

Described start button SB22 two ends and described start button SB12 are parallel with one another.

5. as each described circuit in the claim 1 to 4, it is characterized in that described motor M's is ground wire grounded.

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