CN208489808U - A kind of automatic positive and negative rotating controller of threephase motor - Google Patents
A kind of automatic positive and negative rotating controller of threephase motor Download PDFInfo
- Publication number
- CN208489808U CN208489808U CN201820887078.3U CN201820887078U CN208489808U CN 208489808 U CN208489808 U CN 208489808U CN 201820887078 U CN201820887078 U CN 201820887078U CN 208489808 U CN208489808 U CN 208489808U
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- Prior art keywords
- phase
- time relay
- contactor
- phase mains
- threephase motor
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- Control Of Ac Motors In General (AREA)
Abstract
The utility model provides a kind of automatic positive and negative rotating controller of threephase motor, including first time relay, second time relay, the third time relay, the 4th time relay, first contactor and second contactor；The first contactor and the second contactor are all connected between three phase mains and threephase motor, and when the first contactor or second contactor energization, three phase mains is threephase motor power supply；It is powered with different phase sequences to motor in different time period by the time relay of same model and two contactor combinations, realizes the rotating forward or reversion of motor, structure is simple, at low cost, reliability is higher.
Description
Technical field
The utility model relates to motor braking technical fields, more particularly, to a kind of automatic positive and negative rotation of threephase motor
Controller.
Background technique
With expanding economy and the progress of science and technology, electric operator is more and more wider in the application of industrial circle
It is general, while there has also been certain progress and updates for the control technology of electric operator.In many field of industrial production, such as cement
The occasions such as stirring, elevator, crane, material conveying, need to realize the periodical positive and negative rotation of motor；But using three-phase
In the electric operator of motor, motor braking problem is always without low ideal of a kind of good braking effect, use cost
Technical solution.
Existing motor periodicity positive and negative rotating controller has following several types: first is that manually controlling, i.e., manually pressing just
Biography stops key, motor stalls；It is manually pressed by reversion start button again, motor starts to rotate backward, and needs reversed again
When, repeat this operation, the advantages of such method is that structure is simple, at low cost；Second is that microcomputer control, i.e., using single-chip microcontroller C51,
FPGA or other microprocessor output control pulses, drive the turn-on and turn-off of the different moments of several relays, to realize
The automated periodic positive and negative rotation of motor, operator need to only set operating parameter, press start button, can be by controller
The advantages of positive and negative rotation of auto-controlled motor, this method is the labor intensity for alleviating operator, reduces operator
The operation level requirement of member.
But the method manually controlled makes the labor intensity of operator very big, and operates level requirement height, operation
Personnel need state and the duration of runs of moment observation motor, be easy to cause maloperation；And microcomputer controls higher cost, more
Dust, high pollution, low power supply quality environment, such as cement mixing working environment, microprocessor is easily contaminated and voltage electricity
Magnetic disturbance, failure rate is relatively high, and maintenance cost is also higher.
Utility model content
The utility model provides a kind of a kind of three-phase electricity for overcoming the above problem or at least being partially solved the above problem
The automatic positive and negative rotating controller of motivation, solves that three phase motor structure in the prior art is complicated, reliability is low, maintenance cost is high
Problem.
One aspect according to the present utility model provides a kind of automatic positive and negative rotating controller of threephase motor, including first
The time relay, second time relay, the third time relay, the 4th time relay, first contactor and the second contact
Device；The first contactor and the second contactor are all connected between three phase mains and threephase motor, and first contact
When device or the second contactor are powered, three phase mains is threephase motor power supply；
The first time relay, second time relay, the third time relay and the 4th time relay structure
It is identical, all include normally closed switch, normal open switch and power supply circuit, and be powered after it is every pass through setting time, the normally closed switch by
Closure is converted to disconnection or is converted to closure by disconnection, and the normal open switch is closed or is converted to by closure by disconnecting being converted to
It disconnects；
The N phase of three phase mains, the normally closed switch of first time relay, the third time relay in the threephase motor
Power supply circuit, three phase mains L be connected be connected into circuit；
The L phase of three phase mains, the power supply circuit of first time relay, second time relay in the threephase motor
Normally closed switch, three phase mains N be connected be connected into circuit；
The L phase of three phase mains, the normal open switch of first time relay, the 4th time relay in the threephase motor
Power supply circuit, three phase mains N be connected be connected into circuit；
The L phase of three phase mains, the normal open switch of the 4th time relay, first contactor, three in the threephase motor
The N of phase power supply, which is connected, is connected into circuit；
Wherein, the L phase is any one phase conductor in the three phase mains three-phase, and the N phase is the zero of three phase mains
Line or the neutral conductor.
Preferably, the first contactor is identical with the second contactor structure, it all include three normally opened contacts
With a contact pull-in winding, when the contact pull-in winding is powered, three normally opened contact closures.
Preferably, three normally opened contacts of the first contactor and the second contactor are separately connected described three
Phase power supply and motor, the contact pull-in winding of the first contactor connect the 4th time relay normal open switch,
The N phase of three phase mains；The contact pull-in winding of the second contactor connects the normal open switch of the third time relay, three
The N phase of phase power supply.
Preferably, the normally closed switch includes the first contact and the 4th contact, the normal open switch includes the 6th touching
Point and the 8th contact.
Preferably, the first time relay, second time relay, the third time relay and the 4th time
The setting time of relay is identical or different.
It is opened preferably, being also connected with the three-phase air disconnected for manual closing between the three phase mains and motor
It closes
The utility model proposes a kind of automatic positive and negative rotating controllers of threephase motor, pass through the time relay of same model
Combined with two contactors, in different time period, give motor to be powered with different phase sequences, realize motor rotating forward or
Reversion, structure is simple, at low cost, reliability is higher.
Detailed description of the invention
Fig. 1 is the controller architecture schematic diagram according to the utility model embodiment；
Fig. 2 is the time relay structural schematic diagram according to the utility model embodiment；
Fig. 3 is the contactor construction schematic diagram according to the utility model embodiment；
Fig. 4 is the three phase mains major loop wiring schematic diagram according to the utility model embodiment.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiment of the present utility model is described in further detail.Below
Embodiment is not intended to limit the scope of the present invention for illustrating the utility model.
As shown in Figure 1, showing a kind of automatic positive and negative rotating controller of threephase motor, including first time relay in figure
T1, the second time relay T2, third time relay T3, the 4th time relay T4, the contact of first contactor K1 and second
Device K2；The first contactor K1 and the second contactor K2 are connected between three phase mains and threephase motor M, and described
When the one contactor K1 or second contactor K2 is powered, three phase mains is threephase motor M power supply；
The first time relay T1, the second time relay T2, third time relay T3 and the 4th time relay
Device T4 structure is identical, all includes normally closed switch, normal open switch and power supply circuit, and every by setting time after energization, described normal
Make and break, which is closed, to be converted to disconnection by closure or is converted to closure by disconnection, and the normal open switch is converted to closure or by closing by disconnecting
Conjunction is converted to disconnection；
The N phase of three phase mains, the normally closed switch of first time relay T1, third time relay in the threephase motor
The power supply circuit of device T3, the L of three phase mains are connected and are connected into circuit；
The L phase of three phase mains, the power supply circuit of first time relay T1, the second time relay in the threephase motor
The normally closed switch of device T2, the N of three phase mains are connected and are connected into circuit；
The L phase of three phase mains, the normal open switch of first time relay T1, the 4th time relay in the threephase motor
The power supply circuit of device T4, the N of three phase mains are connected and are connected into circuit；
The L phase of three phase mains, the normal open switch of the 4th time relay T4, first contactor in the threephase motor
K1, three phase mains N be connected be connected into circuit；
The L phase of three phase mains, the normal open switch of third time relay T3, second contactor in the threephase motor
K2, three phase mains N be connected be connected into circuit；
Wherein, the L phase is any one phase conductor in three phase mains U, V, W three-phase, and the N phase is three phase mains
Zero curve or the neutral conductor.
Specifically, in the present embodiment, as shown in Fig. 2, being the internal structure of the time relay.
Contact 1 (the first contact) and contact 4 (the 4th contact) form normally closed switch K14, and wait for a period of time (the length of time
Degree is to fix time set by relay) after, this normally closed switch disconnects；
Contact 6 (the 6th contact) and contact 8 (the 8th contact) form normal open switch K68, and wait for a period of time (the length of time
Degree is to fix time set by relay) after, this normally closed switch closure.
As shown in figure 3, being the internal structure of contactor, the first contactor K1 and the second contactor K2 structure phase
Together, it is made of three normally opened contacts and a contact pull-in winding KM.When power supply is powered to contact pull-in winding KM, three normally opened
Contact closure, contactor conducting, starts to work.
In the present embodiment, as shown in figure 4, three normally opened touchings of the first contactor K1 and second contactor K2
It puts and is separately connected the three phase mains and threephase motor M, described in the contact pull-in winding KM1 connection of the first contactor K1
The N phase of the normal open switch of 4th time relay T4, three phase mains；The contact pull-in winding KM2 of the second contactor K2 connects
Connect the normal open switch of the third time relay T3, the N phase of three phase mains.
Specifically, M is motor.U, V, W are respectively a phase of three phase mains.K3 is main switch, disconnected using manual closing
The three-phase air switch opened；K1, K2 are respectively phase-change switch, the contactor of model the present embodiment Fig. 3 introduction, and three phase mains is logical
K1 and K2 are crossed, in different time period, is powered with different phase sequences to motor, realizes the rotating forward or anti-of threephase motor M
Turn.
T1, T2, T3, T4 are the time relay of same model, and internal structure is as shown in Figure 2.KM1 is contactor K1's
Pull-in winding, KM2 are the pull-in winding of contactor K2.
In the present embodiment, when the first time relay, second time relay, the third time relay and the 4th
Between relay setting time it is identical or different.
In the present embodiment, it is preferred that first time relay T1, the second time relay T2, the third time relay
The setting time of T3 and the 4th time relay T4 are set to time1, time2, time3 and time4.
In the present embodiment, specifically, the conducting wire connection of circuit is as follows:
The pin 1 of T3 is connected with the pin 2 of T2；The pin 4 of T3 is connected with N；
The pin 2 of T3 is connected with the pin 1 of T1；The pin 7 of T3 is connected with L；
The pin 8 of T3 is connected with L；The pin 6 of T3 is connected with one end of KM2；The other end of KM2 is connected with N；
The pin 1 of T2 is connected with the pin 2 of T1；The pin 4 of T2 is connected with N；
The pin 2 of T2 is connected with the pin 1 of T3；The pin 7 of T2 is connected with L；
The pin 1 of T1 is connected with the pin 2 of T3；The pin 4 of T1 is connected with N；
The pin 2 of T1 is connected with the pin 1 of T2；The pin 7 of T1 is connected with L；
The pin 8 of T1 is connected with L；The pin 6 of T1 is connected with the pin 7 of T4；
The pin 7 of T4 is connected with the pin 6 of T1；The pin 2 of T4 is connected with N；
The pin 8 of T4 is connected with L；The pin 6 of T4 is connected with one end of KM1；The other end of KM1 is connected with N.
Above-mentioned pin 1, pin 2 ... respectively refer to the first pin, second pin ....
In the present embodiment, the course of work of controller is divided into first cycle period after being powered and following cycle period
Two states, specific work process are as follows:
First cycle period:
1, controller starts；
T1 obtains power supply by the K14 of T2, and T1 starts timework, setting time time1；
T2 obtains power supply by the K14 of T3, and T2 starts timework, setting time time2；
T3 obtains power supply by the K14 of T1, and T3 starts timework, setting time time3；
The setting time of T4 is time4.
1, after T1 waits for a period of time time1 (length of time is to fix time set by relay), the K14 of T1 is disconnected, T1
K68 closure；Power supply is powered to T4, and T4 starts timing；
T4 waits for a period of time after time4 (length of time is to fix time set by relay), and the K68 of T4 is closed；Power supply
It powers to KM1, contactor K1 (first contactor) closure conducting, by K1 to motor, motor starts three phase mains
It rotates forward.
2, after T2 waits for a period of time time2 (length of time is to fix time set by relay), the K14 of T2 is disconnected, T1
It is powered down, the K68 of T1 is disconnected；
T4 is powered down, and the K68 of T4 is disconnected；
KM1 is powered down, and contactor K1 is disconnected, and motor is powered down, stops operating.
3, after T3 waits for a period of time time3 (length of time is to fix time set by relay), the K14 of T3 is disconnected, T3
K68 closure, power supply to KM2 power, contactor K2 closure conducting, three phase mains by K2 (second contactor) to motor supply
Electricity, motor start to rotate backward；T2 is powered down, and the K14 of T2 restores closed state, and T1 is energized, and T1 starts timing.
Second circulation:
1, after T1 waits for a period of time time1 (length of time is to fix time set by relay), the K14 of T1 is disconnected, T1
K68 closure；
T3 is powered down, and the K68 of T3 is disconnected, and the K14 of T3 restores closed state；T2 is energized, and T2 starts timing；Power supply is to T4
Power supply, T4 start timing；
KM2 is powered down, and contactor K2 is disconnected, and motor is powered down, stops operating.
T4 waits for a period of time after time4 (length of time is to fix time set by relay), and the K68 of T4 is closed；Power supply
It powers to KM1, contactor K1 closure conducting, by K1 to motor, motor starts to rotate forward three phase mains.
2, after T2 waits for a period of time time2 (length of time is to fix time set by relay), the K14 of T2 is disconnected, T1
It is powered down, the K68 of T1 is disconnected；
T4 is powered down, and the K68 of T4 is disconnected；
KM1 is powered down, and contactor K1 is disconnected, and motor is powered down, stops operating.
3, after T3 waits for a period of time time3 (length of time is to fix time set by relay), the K14 of T3 is disconnected, T3
K68 closure, power supply to KM2 power, contactor K2 closure conducting, three phase mains by K2 to motor, motor is opened
Beginning rotates backward；
T2 is powered down, and the K14 of T2 restores closed state, and T1 is energized, and T1 starts timing.
The mode operation that the subsequent period recycles according to second.By set four time relays timing when
Between, it can control the dwell time between the time and positive and negative rotation conversion of motor forward direction and inverted running.
In conclusion passing through same model the utility model proposes a kind of automatic positive and negative rotating controller of threephase motor
The time relay and two contactor combinations are powered with different phase sequences to motor in different time period, realize motor
Rotating forward or reversion, structure is simple, at low cost, reliability is higher.
Finally, the method for the utility model is only preferable embodiment, it is not intended to limit the protection of the utility model
Range.Within the spirit and principle of the utility model, any modification, equivalent replacement, improvement and so on should be included in
Within the protection scope of the utility model.
Claims (6)
1. a kind of automatic positive and negative rotating controller of threephase motor, which is characterized in that including first time relay, the second time after
Electric appliance, the third time relay, the 4th time relay, first contactor and second contactor；The first contactor and institute
It states second contactor to be all connected between three phase mains and threephase motor, and the first contactor or the second contactor are powered
When, three phase mains is threephase motor power supply；
The first time relay, second time relay, the third time relay and the 4th time relay structure are identical,
It all include normally closed switch, normal open switch and power supply circuit, and every by setting time after energization, the normally closed switch is turned by closure
It is changed to disconnection or closure is converted to by disconnection, and the normal open switch is closed by disconnecting being converted to or is converted to disconnection by closure；
The confession of the N phase of three phase mains, the normally closed switch of first time relay, the third time relay in the threephase motor
Circuit, three phase mains L be connected be connected into circuit；
The L phase of three phase mains in the threephase motor, the power supply circuit of first time relay, second time relay it is normal
Make and break pass, three phase mains N be connected be connected into circuit；
The confession of the L phase, the normal open switch, the 4th time relay of first time relay of three phase mains in the threephase motor
Circuit, three phase mains N be connected be connected into circuit；
The L phase of three phase mains, the normal open switch of the 4th time relay, first contactor, three-phase electricity in the threephase motor
The N in source, which is connected, is connected into circuit；
The L phase of three phase mains, the normal open switch of the third time relay, second contactor, three-phase electricity in the threephase motor
The N in source, which is connected, is connected into circuit；
Wherein, the L phase is any one phase conductor in the three phase mains three-phase, the N phase be three phase mains zero curve or
The neutral conductor.
2. the automatic positive and negative rotating controller of threephase motor according to claim 1, which is characterized in that the first contactor
It is identical with the second contactor structure, it all include three normally opened contacts and a contact pull-in winding, the contact is attracted line
When circle is powered, three normally opened contact closures.
3. the automatic positive and negative rotating controller of threephase motor according to claim 2, which is characterized in that the first contactor
The three phase mains and motor, the touching of the first contactor are separately connected with three normally opened contacts of the second contactor
Point pull-in winding connects the N phase of the normal open switch of the 4th time relay, three phase mains；The contact of the second contactor
Pull-in winding connects the N phase of the normal open switch of the third time relay, three phase mains.
4. the automatic positive and negative rotating controller of threephase motor according to claim 1, which is characterized in that the normally closed switch packet
The first contact and the 4th contact are included, the normal open switch includes the 6th contact and the 8th contact.
5. the automatic positive and negative rotating controller of threephase motor according to claim 1, which is characterized in that the first time after
Electric appliance, second time relay, the setting time of the third time relay and the 4th time relay are identical or different.
6. the automatic positive and negative rotating controller of threephase motor according to claim 1, which is characterized in that the three phase mains with
The three-phase air switch disconnected for manual closing is also connected between motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820887078.3U CN208489808U (en) | 2018-06-08 | 2018-06-08 | A kind of automatic positive and negative rotating controller of threephase motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820887078.3U CN208489808U (en) | 2018-06-08 | 2018-06-08 | A kind of automatic positive and negative rotating controller of threephase motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208489808U true CN208489808U (en) | 2019-02-12 |
Family
ID=65251343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820887078.3U Expired - Fee Related CN208489808U (en) | 2018-06-08 | 2018-06-08 | A kind of automatic positive and negative rotating controller of threephase motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208489808U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111697902A (en) * | 2020-06-23 | 2020-09-22 | 温州大学 | Three-phase motor control circuit based on relay |
-
2018
- 2018-06-08 CN CN201820887078.3U patent/CN208489808U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111697902A (en) * | 2020-06-23 | 2020-09-22 | 温州大学 | Three-phase motor control circuit based on relay |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190212 Termination date: 20210608 |