CN208337443U - A kind of motor frequency conversion starting or stopping control circuit - Google Patents
A kind of motor frequency conversion starting or stopping control circuit Download PDFInfo
- Publication number
- CN208337443U CN208337443U CN201721929841.6U CN201721929841U CN208337443U CN 208337443 U CN208337443 U CN 208337443U CN 201721929841 U CN201721929841 U CN 201721929841U CN 208337443 U CN208337443 U CN 208337443U
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- frequency
- contactor
- normally opened
- opened contact
- relay
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Abstract
The utility model provides a kind of motor frequency conversion starting or stopping control circuit comprising start and stop relay, frequency converter, industrial frequency AC contactor, frequency-changing AC contactor, electrothermal relay, converting operation relay, selection switch；Electric motor a-road-through overtemperature relay, industrial frequency AC contactor are connected with three phase mains, and another way is connected by frequency-changing AC contactor, frequency converter with the three phase mains；The selection switch includes frequency conversion gear, power frequency gear；Power frequency gear one end is connected with single phase poaer supply, and the other end is connected by normally opened contact, the control terminal of industrial frequency AC contactor, normally-closed contact with zero curve；Frequency conversion gear one end is connected with single phase poaer supply, and the other end is connected by the control terminal of normally opened contact, frequency-changing AC contactor with zero curve；The normally opened contact is in parallel with normally opened contact；It is connected on the control line bank of the frequency converter after the normally opened contact, normally opened contact series connection for controlling the start and stop of frequency converter.
Description
Technical field
The utility model relates to a kind of electric machines control technology, especially a kind of motor frequency conversion starting or stopping control circuit.
Background technique
After the disconnection of start and stop relay, the frequency-changing AC connecting with frequency converter connects traditional motor frequency conversion start-stop control system
Tentaculum can be disconnected directly, cut off the triple line between frequency converter and motor load, but frequency converter still will continue to operate at this time, this
Sample loses load in the case where frequency converter operates suddenly, be easy to cause frequency converter failure, and over time, frequency converter is easy damage
It is bad.
Therefore, urgent need one kind more preferably motor frequency conversion starting or stopping control circuit.
Summary of the invention
In view of the deficiencies of the prior art, the utility model technical issues that need to address are to provide a kind of motor frequency conversion start and stop
Control circuit, being capable of effective protection frequency converter.
In order to solve the above technical problems, the utility model provides a kind of motor frequency conversion starting or stopping control circuit comprising start and stop
Relay (R1), frequency converter, industrial frequency AC contactor (M1), frequency-changing AC contactor (M2), electrothermal relay (0/L1), frequency conversion fortune
Row relay (R2), selection switch (SW1)；Electric motor a-road-through overtemperature relay (0/L1), industrial frequency AC contactor (M1)
It is connected with three phase mains, another way is connected by frequency-changing AC contactor (M2), frequency converter with the three phase mains；The start and stop
Relay (R1) includes normally opened contact (R1-1), normally opened contact (R1-2), normally opened contact (R1-3), the converting operation relay
It (R2) include normally opened contact (R2-1), the electrothermal relay (0/L1) includes normally-closed contact (0/L1-1), and the frequency-changing AC connects
Tentaculum (M2) includes normally opened contact (M2-1)；The selection switch (SW1) includes two gears: frequency conversion gear, power frequency gear；
Power frequency gear one end is connected with single phase poaer supply, and the other end passes through normally opened contact (R1-1), industrial frequency AC contactor (M1)
Control terminal, normally-closed contact (0/L1-1) are connected with zero curve；Frequency conversion gear one end is connected with single phase poaer supply, and the other end passes through normal
Open contact (R1-2), the control terminal of frequency-changing AC contactor (M2) is connected with zero curve；The normally opened contact (R2-1) and normally opened touching
Point (R1-2) is in parallel, which is connected with the frequency conversion gear, the other end and frequency-changing AC contactor
(M2) control terminal is connected；The control of the frequency converter is connected to after the normally opened contact (R1-3), normally opened contact (M2-1) series connection
For controlling the start and stop of frequency converter on line bank processed.
It further include miniature circuit breaker as a kind of further improvement of motor frequency conversion starting or stopping control circuit of the utility model
(MCCB), the industrial frequency AC contactor (M1) and the frequency converter pass through the miniature circuit breaker (MCCB) and the three-phase electricity
Source is connected, and the third gear switch is connected also by the miniature circuit breaker (MCCB) with single phase poaer supply.
It further include miniature circuit breaker as a kind of further improvement of motor frequency conversion starting or stopping control circuit of the utility model
(WCB1), the industrial frequency AC contactor (M1) and the frequency converter pass through the miniature circuit breaker (WCB1) afterwards with it is described miniature
Breaker (MCCB) is connected.
It further include miniature circuit breaker as a kind of further improvement of motor frequency conversion starting or stopping control circuit of the utility model
(WCB2), the third gear switch is connected by the miniature circuit breaker (WCB2) with the miniature circuit breaker (MCCB).
It further include emergency button as a kind of further improvement of motor frequency conversion starting or stopping control circuit of the utility model
(EM1), the third gear switch is connected by the emergency button (EM1) with the miniature circuit breaker (MCCB).
As a kind of further improvement of motor frequency conversion starting or stopping control circuit of the utility model, further include frequency converter failure after
Electric appliance (R3), the frequency converter failure relay (R3) include normally-closed contact (R3-1), the frequency-changing AC contactor (M2)
Control terminal is connected by the normally-closed contact (R3-1) with zero curve.
As a kind of further improvement of motor frequency conversion starting or stopping control circuit of the utility model, the selection switchs (SW1)
It further include having emergency gear, described emergency gear one end is connected with single phase poaer supply, and the other end passes through industrial frequency AC contactor (M1)
Control terminal, normally-closed contact (0/L1-1) is connected with zero curve.
Compared with prior art, this control circuit is when variable mode starts, start and stop relay (R1) work once electrified, from
And frequency-changing AC contactor (M2) work once electrified, then opened by normally opened contact (R1-3) and normally opened contact (M2-1) control frequency converter
Dynamic, frequency converter output frequency controls electric motor revolving speed.When variable mode stops, start and stop relay (R1) power-off stops work
Make, normally opened contact (R1-3) disconnects, and frequency converter, which slows down, stops electric motor, but frequency converter is also being run, at this time converting operation after
Electric appliance (R2) is still within working condition, thus normally opened contact (R2-1) it is chain frequency-changing AC contactor (M2) be attracted, at this time
Frequency converter and motor triple line do not disconnect, and electric motor revolving speed starts to be declined according to frequency, when frequency will be 0, electric motor
It stops working, i.e., the triple line between inverter output terminal and electric motor disconnects, and will not lose when guarantee frequency converter operates in this way
It unloads, effective protection frequency converter.
Detailed description of the invention
It is more particularly described by the preferred embodiment in the utility model shown in the drawings, the above and other mesh of the utility model
, feature and advantage will become more fully apparent.Identical appended drawing reference indicates identical part in all the attached drawings, and does not carve
Meaning draws attached drawing by actual size equal proportion scaling, it is preferred that emphasis is shows this purport.
Fig. 1 is a kind of electrical block diagram of motor frequency conversion starting or stopping control circuit of the utility model.
Fig. 2 is the wiring schematic diagram of the control line line bank of frequency converter shown in Fig. 1.
Specific embodiment
For the ease of understanding the utility model, below with reference to relevant drawings to being originally described more fully.
It should be noted that it can be directly to separately when an element is considered as " connection " another element
One element and it is in combination be integrated, or may be simultaneously present centering elements.Term as used herein " installation ", " one
End ", " other end " and similar statement are for illustrative purposes only.
Unless otherwise defined, the technology of all technical and scientific terms used herein and the technical field for belonging to this
The normally understood meaning of personnel is identical.Term used in book described herein is intended merely to the mesh of description specific embodiment
, it is not intended that in limitation the utility model.Term " and or " used herein includes one or more relevant institute's lists
Any and all combinations of purpose.
With reference to Fig. 1-2, a kind of multi-mode motor switching on/off circuit of the present embodiment comprising start and stop relay (R1), frequency converter,
Industrial frequency AC contactor (M1), frequency-changing AC contactor (M2), electrothermal relay (0/L1), converting operation relay (R2), selection
It switchs (SW1).Electric motor a-road-through overtemperature relay (0/L1), industrial frequency AC contactor (M1) are connected with three phase mains, separately
It is connected all the way by frequency-changing AC contactor (M2), frequency converter with the three phase mains.The start and stop relay (R1) includes normal
Contact (R1-1), normally opened contact (R1-2), normally opened contact (R1-3) are opened, the converting operation relay (R2) includes normally opened contact
(R2-1), the electrothermal relay (0/L1) includes normally-closed contact (0/L1-1), and the frequency-changing AC contactor (M2) includes normally opened
Contact (M2-1).The selection switch (SW1) includes two gears: frequency conversion gear, power frequency gear；Power frequency gear one end
It is connected with single phase poaer supply, the other end passes through normally opened contact (R1-1), the control terminal of industrial frequency AC contactor (M1), normally-closed contact
(0/L1-1) is connected with zero curve；Frequency conversion gear one end is connected with single phase poaer supply, and the other end passes through normally opened contact (R1-2), change
The control terminal of frequency A.C. contactor (M2) is connected with zero curve；The normally opened contact (R2-1) is in parallel with normally opened contact (R1-2), should
Normally opened contact one end (R2-1) is connected with the frequency conversion gear, and the other end is connected with the control terminal of frequency-changing AC contactor (M2).
It is connected on the control line bank of the frequency converter after the normally opened contact (R1-3), normally opened contact (M2-1) series connection for controlling
The start and stop of frequency converter.
When variable mode, is cut off or connected between frequency converter output and electric motor by frequency-changing AC contactor (M2)
Triple line, the opportunity of actuation and the disconnection of frequency-changing AC contactor (M2) described in this control circuit major integration guarantee frequency conversion system
System is normal.When variable mode starting, start and stop relay (R1) work once electrified, so that frequency-changing AC contactor (M2) obtains electrician
Make, then by normally opened contact (R1-3) and normally opened contact (M2-1) control frequency converter starting, frequency converter output frequency controls motor horse
Up to revolving speed.When variable mode stops, start and stop relay (R1) power-off stops working, and normally opened contact (R1-3) disconnects, frequency conversion
Device, which slows down, stops electric motor, but frequency converter is also being run, and converting operation relay (R2) is still within working condition at this time, institute
With normally opened contact (R2-1) it is chain frequency-changing AC contactor (M2) be attracted, frequency converter and motor triple line do not disconnect at this time, electricity
Machine motor rotary speed starts to be declined according to frequency, and when frequency will be 0, electric motor stops working, i.e. inverter output terminal and electricity
Triple line between machine motor disconnects, and such frequency converter will not lose load when operating, and effective protection protects frequency converter.
It in a further preferred embodiment, further include miniature circuit breaker (MCCB), the industrial frequency AC contactor (M1)
Pass through the miniature circuit breaker (MCCB) with the frequency converter to be connected with the three phase mains, the third gear switch is micro- also by this
Type breaker (MCCB) is connected with single phase poaer supply.
In a further preferred embodiment, the multi-mode motor switching on/off circuit further includes miniature circuit breaker (WCB1),
The industrial frequency AC contactor (M1) and the frequency converter pass through the miniature circuit breaker (WCB1) afterwards with the miniature circuit breaker
(MCCB) it is connected.
In a further preferred embodiment, the multi-mode motor switching on/off circuit further includes miniature circuit breaker (WCB2),
The third gear switch is connected by the miniature circuit breaker (WCB2) with the miniature circuit breaker (MCCB).
In a further preferred embodiment, the multi-mode motor switching on/off circuit further includes emergency button (EM1), described
Third gear switch is connected by the emergency button (EM1) with the miniature circuit breaker (MCCB).
In a further preferred embodiment, the multi-mode motor switching on/off circuit further includes frequency converter failure relay
(R3), the frequency converter failure relay (R3) includes normally-closed contact (R3-1), the control of the frequency-changing AC contactor (M2)
End is connected by the normally-closed contact (R3-1) with zero curve.
In a further preferred embodiment, the selection switch (SW1) further includes having emergency gear, the emergency gear
One end is connected with single phase poaer supply, and the other end passes through the control terminal of industrial frequency AC contactor (M1), normally-closed contact (0/L1-1) and zero
Line is connected.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The several embodiments of utility model above described embodiment only expresses, the description thereof is more specific and detailed, but
It cannot be understood as the limitations to utility model patent range.It should be pointed out that for the ordinary skill of this field
For personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these belong to this
The protection scope of utility model.Therefore, the scope of protection shall be subject to the appended claims for the utility model patent.
Claims (7)
1. a kind of motor frequency conversion starting or stopping control circuit, it is characterised in that connect including start and stop relay (R1), frequency converter, industrial frequency AC
Tentaculum (M1), frequency-changing AC contactor (M2), electrothermal relay (0/L1), converting operation relay (R2), selection switch (SW1)；
Electric motor a-road-through overtemperature relay (0/L1), industrial frequency AC contactor (M1) are connected with three phase mains, and another way passes through change
Frequency A.C. contactor (M2), frequency converter are connected with the three phase mains；The start and stop relay (R1) includes normally opened contact (R1-
1), normally opened contact (R1-2), normally opened contact (R1-3), the converting operation relay (R2) include normally opened contact (R2-1), institute
Stating electrothermal relay (0/L1) includes normally-closed contact (0/L1-1), and the frequency-changing AC contactor (M2) includes normally opened contact (M2-
1)；The selection switch (SW1) includes frequency conversion gear, power frequency gear；Power frequency gear one end is connected with single phase poaer supply, another
End is connected by normally opened contact (R1-1), the control terminal of industrial frequency AC contactor (M1), normally-closed contact (0/L1-1) with zero curve；Institute
It states frequency conversion gear one end to be connected with single phase poaer supply, the other end passes through the control of normally opened contact (R1-2), frequency-changing AC contactor (M2)
End processed is connected with zero curve；The normally opened contact (R2-1) is in parallel with normally opened contact (R1-2), the normally opened contact one end (R2-1) with
The frequency conversion gear is connected, and the other end is connected with the control terminal of frequency-changing AC contactor (M2)；The normally opened contact (R1-3), often
It opens on the control line bank for being connected to the frequency converter after contact (M2-1) connects for controlling the start and stop of frequency converter.
2. a kind of motor frequency conversion starting or stopping control circuit as described in claim 1, it is characterised in that further include miniature circuit breaker
(MCCB), the industrial frequency AC contactor (M1) and the frequency converter pass through the miniature circuit breaker (MCCB) and the three-phase electricity
Source is connected, and the selection switch (SW1) is connected also by the miniature circuit breaker (MCCB) with single phase poaer supply.
3. a kind of motor frequency conversion starting or stopping control circuit as claimed in claim 2, it is characterised in that further include miniature circuit breaker
(WCB1), the industrial frequency AC contactor (M1) and the frequency converter pass through the miniature circuit breaker (WCB1) afterwards with it is described miniature
Breaker (MCCB) is connected.
4. a kind of motor frequency conversion starting or stopping control circuit as claimed in claim 2, it is characterised in that further include miniature circuit breaker
(WCB2), the selection switch (SW1) is connected by the miniature circuit breaker (WCB2) with the miniature circuit breaker (MCCB).
5. a kind of motor frequency conversion starting or stopping control circuit as claimed in claim 2, it is characterised in that it further include emergency button (EM1),
The selection switch (SW1) is connected by the emergency button (EM1) with the miniature circuit breaker (MCCB).
6. a kind of motor frequency conversion starting or stopping control circuit as described in claim 1, it is characterised in that further include frequency converter failure relay
Device (R3), the frequency converter failure relay (R3) include normally-closed contact (R3-1), the control of the frequency-changing AC contactor (M2)
End processed is connected by the normally-closed contact (R3-1) with zero curve.
7. a kind of motor frequency conversion starting or stopping control circuit as described in claim 1, it is characterised in that the selection switch (SW1) is also wrapped
Emergency gear is included, described emergency gear one end is connected with single phase poaer supply, and the other end passes through the control of industrial frequency AC contactor (M1)
End processed, normally-closed contact (0/L1-1) are connected with zero curve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721929841.6U CN208337443U (en) | 2017-12-31 | 2017-12-31 | A kind of motor frequency conversion starting or stopping control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721929841.6U CN208337443U (en) | 2017-12-31 | 2017-12-31 | A kind of motor frequency conversion starting or stopping control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208337443U true CN208337443U (en) | 2019-01-04 |
Family
ID=64788816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721929841.6U Expired - Fee Related CN208337443U (en) | 2017-12-31 | 2017-12-31 | A kind of motor frequency conversion starting or stopping control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208337443U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108092557A (en) * | 2017-12-31 | 2018-05-29 | 广州市大弘自动化科技有限公司 | A kind of motor frequency conversion starting or stopping control circuit |
-
2017
- 2017-12-31 CN CN201721929841.6U patent/CN208337443U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108092557A (en) * | 2017-12-31 | 2018-05-29 | 广州市大弘自动化科技有限公司 | A kind of motor frequency conversion starting or stopping control circuit |
| CN108092557B (en) * | 2017-12-31 | 2024-02-20 | 宁波市镇海甬欣机电科技有限公司 | Motor frequency conversion start-stop control circuit |
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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: 20190104 Termination date: 20201231 |