CN207008393U - A kind of automatic switching control device - Google Patents
A kind of automatic switching control device Download PDFInfo
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- CN207008393U CN207008393U CN201720833094.XU CN201720833094U CN207008393U CN 207008393 U CN207008393 U CN 207008393U CN 201720833094 U CN201720833094 U CN 201720833094U CN 207008393 U CN207008393 U CN 207008393U
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- soft
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- control device
- automatic switching
- electric motor
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Abstract
The utility model discloses a kind of automatic switching control device, belongs to intelligent electric appliance control technology field.The automatic switching control device includes：Control PLC；Soft starting main loop one end is connected with control PLC, the other end and motor connection；Electric motor protecting bypasses one end and is connected with control PLC, the other end and motor connection, and electric motor protecting bypass is in parallel with soft starting main loop.The utility model automatic switching control device can effectively reduce the important key equipment outage rate caused by soft start equipment fault; significantly very high equipment reliability of operation and stability; equipment operating efficiency is improved while a large amount of spare part expenses are saved, ensure that the operation steady in a long-term of key equipment.
Description
Technical field
Intelligent electric appliance control technology field is the utility model is related to, more particularly to a kind of automatic switching control device.
Background technology
At present, the major steel plant's belt in the whole nation and Fan Equipment start is entered using integrated, integrated soft initiator
Row starts, impact during avoiding electric motor starting to power network and plant equipment.But most of soft initiators exist it is following some ask
Topic：
(1) run time is longer：In whole soft initiator running, controller is responsible for logic control and alert detecting,
24 hours high load capacity long-play states are constantly in, aging occurs in internal circuit board electronic device, performance reduces, and causes to control
Functional fault processed.
(2) external environment condition reason：Due to soft initiator installation switchgear house at the scene, by high temperature, dust shadow in charging operation
Ring, reduce equipment physical life.
(3) interference free performance is low：Due to indoor design reason, it is impossible to resist the harmonic wave interference in external power source, cause to control
Device board failure processed takes place frequently, and influences to produce normal operation.
As usage time increases, soft initiator internal control component easily breaks down, and easily occurs frequently " stopping steathily "
Or other failures, cause soft initiator to break down, once but soft initiator break down, certainly will cause and soft initiator phase
Key equipment burst even is shut down, and immeasurable loss is caused to production.
Utility model content
The utility model provides a kind of automatic switching control device, solves or part solves soft start in the prior art
Device internal control component easily breaks down, and frequently " stopping steathily " or other failures easily occurs, causes the burst of key equipment to stop
The technical problem of machine.
In order to solve the above technical problems, the utility model provides a kind of automatic switching control device, with motor connection, institute
Stating control device includes：Control PLC；Soft starting main loop, one end are connected with the control PLC, and the other end connects with the motor
Connect；Electric motor protecting bypasses, and one end be connected with the control PLC, the other end and the motor connection, the electric motor protecting bypass and
The soft starting main loop is in parallel.
Further, the soft starting main loop includes：Soft initiator, fuse and breaker；The soft initiator
Current input terminal is connected by the fuse with the breaker；The current output terminal of the soft initiator connects with the motor
Connect；The control signal input of the soft initiator is connected with the control PLC.
Further, the electric motor protecting bypass includes：Electrothermal relay and contactor；The electric current input of the electrothermal relay
End and contactor series connection；The current output terminal of the electrothermal relay and the motor connection；The signal of the electrothermal relay
Control terminal is connected with the control PLC.
Further, power taking at connecting node of the contactor between the breaker and the fuse.
Further, the utility model automatic switching control device also includes：Transmitting device, one end and the control PLC
Connection, the other end are connected with electric motor protecting bypass and the soft starting main loop respectively.
Further, the transmitting device includes：D nets PLC, is connected with the control PLC；D net netting twines, one end with it is described
D nets PLC connections, and the other end is connected with electric motor protecting bypass and the soft starting main loop respectively.
The one or more technical schemes provided in the embodiment of the present application, have at least the following technical effects or advantages：
Because soft starting main loop one end is connected with control PLC, the other end and motor connection, electric motor protecting bypass one end with
Control PLC connects, and the other end and motor connection, electric motor protecting bypass is in parallel with soft starting main loop, so, efficiently solve existing
There is soft initiator internal control component in technology easily to break down, frequently " stopping steathily " or other failures easily occur, cause to close
The technical problem that the burst of button apparatus is shut down, after opening machine signal to soft starting main loop by control PLC transmission first, control
PLC transmissions second are opened machine signal and bypassed to electric motor protecting, the operation that control PLC bypasses according to soft starting main loop and electric motor protecting
Situation, the circuit that electric current is conveyed to motor is switched into electric motor protecting bypass by soft starting main loop, it is possible to achieve soft start master
The one-key start in loop simultaneously automatically switches to electric motor protecting bypass operation according to service condition, after electric motor protecting bypass is stable
Automatically soft initiator is cut off, can effectively reduces the important key equipment outage rate caused by soft start equipment fault, endure significantly
High equipment reliability of operation and stability, equipment operating efficiency is improved while a large amount of spare part expenses are saved, is protected
The operation steady in a long-term of key equipment is demonstrate,proved.
Brief description of the drawings
Fig. 1 is the electrical schematic diagram for the automatic switching control device that the utility model embodiment provides；
Fig. 2 is the structural representation of the soft initiator of automatic switching control device in Fig. 1；
Fig. 3 is the structural representation of the electric motor protecting bypass of automatic switching control device in Fig. 1；
Fig. 4 is the actual control interface chart of automatic switching control device in Fig. 1；
Fig. 5 is the control principle drawing of automatic switching control device in Fig. 1；
Fig. 6 is the control program ladder diagram of the control PLC of automatic switching control device in Fig. 1；
Wherein, the M in Fig. 1 is motor, and MP is electrothermal relay, KM is contactor, FU is fuse and QL is breaker,
L1, L2, L3 are power supply three-phase.
Embodiment
Referring to Fig. 1-6, the utility model embodiment provides a kind of automatic switching control device, described with motor connection
Control device includes：Control PLC, soft starting main loop and electric motor protecting bypass.
Described soft starting main loop one end is connected with the control PLC, the other end and the motor connection.
The electric motor protecting bypasses one end and is connected with the control PLC, and the other end and the motor connection, the motor are protected
Shield bypass is in parallel with the soft starting main loop.
Technical scheme is because soft starting main loop one end is connected with control PLC, the other end and motor connection, motor
Protection bypass one end is connected with control PLC, and the other end and motor connection, electric motor protecting bypass, institute in parallel with soft starting main loop
With, efficiently solve soft initiator internal control component in the prior art and easily break down, easily occur frequently " stopping steathily " or
Other failures, the technical problem for causing the burst of key equipment to be shut down, send first by control PLC and open machine signal to soft start
After major loop, control PLC transmission second is opened machine signal and bypassed to electric motor protecting, and control PLC is according to soft starting main loop and electricity
The running situation of machine protection bypass, the circuit that electric current is conveyed to motor is switched into electric motor protecting bypass by soft starting main loop,
The one-key start of soft starting main loop can be realized and electric motor protecting bypass operation is automatically switched to according to service condition, motor is protected
Soft initiator is cut off automatically after shield bypass is stable, the important key caused by soft start equipment fault can be effectively reduced and set
Standby outage rate, significantly very high equipment reliability of operation and stability, is improved while a large amount of spare part expenses are saved
Equipment operating efficiency, it ensure that the operation steady in a long-term of key equipment.
The structure of soft starting main loop is discussed in detail.
The soft starting main loop includes：Soft initiator, fuse and breaker.
The current input terminal of the soft initiator is connected by the fuse with the breaker.
The current output terminal of the soft initiator and the motor connection.
The control signal input of the soft initiator is connected with the control PLC.
4,5,6 points in Fig. 2 are connected with 10 in Fig. 3,11,12 points, i.e.,：The outlet side of electric motor protecting bypass with it is soft
The outlet side of starter is connected in parallel powers to motor.
The structure of soft starting main loop is discussed in detail.
The electric motor protecting bypass includes：Electrothermal relay and contactor.
The current input terminal of the electrothermal relay and contactor series connection.
The current output terminal of the electrothermal relay and the motor connection.
The signal control terminal of the electrothermal relay is connected with the control PLC.
Contactor power taking at the connecting node between the breaker and the fuse, ensure special feelings in the future
Under condition directly from electric motor protecting bypass start-up when will not cause fuse blows.
1,2,3 point in Fig. 2 is connected with 7 in Fig. 3,8,9 points, i.e.,：The contactor is from the breaker and described molten
Power taking at connecting node between disconnected device.
The utility model automatic switching control device also includes：Transmitting device.
Described transmitting device one end is connected with the control PLC, the other end respectively with the electric motor protecting bypass and it is described
Soft starting main loop connects.
The transmitting device includes：D nets PLC and D net netting twines.
The D nets PLC is connected with the control PLC.
Described D nets netting twine one end and the D net PLC be connecteds, and the other end bypasses and described soft with the electric motor protecting respectively
Start major loop connection.
In order to become apparent from introducing the utility model embodiment, introduced below from application method of the present utility model.
Control PLC (PLC, you can programmed logic controller) nets PLC (D nets, i.e. DeviceNet) by D and D nets netting twine is sent out
Send first open machine signal to soft starting main loop after, control PLC by D net PLC and D nets netting twines send second open machine signal to
Electric motor protecting bypasses, the running situation that control PLC bypasses according to soft initiator and electric motor protecting, the electricity of electric current will be conveyed to motor
Route soft starting main loop switches to electric motor protecting bypass.
I.e.：Control PLC sends first and opens machine signal to soft initiator, when soft initiator electric current is less than Rated motor electric current simultaneously
During stable operation 2S, control PLC sends second and opens machine signal to electrothermal relay, after bypass is connected, electrothermal relay and soft initiator
3S is operated together, when not other failures occur, control PLC sends stopping signal to soft initiator, passes through electrothermal relay
Current output terminal is powered to motor.Machine signal is opened when soft initiator receives the first of control PLC transmission, soft initiator starts report event
When hindering or can not start, allow a directly button playing machine interface and clicking on, then put startup, the electric current for directly passing through electrothermal relay exports
Hold to motor and power, it is possible to achieve the one-key start of soft starting main loop is simultaneously automatically switched to by electric motor protecting according to service condition
Road is run, and is automatically cut off soft initiator after electric motor protecting bypass is stable, can effectively be reduced because soft start equipment fault is led
The important key equipment outage rate caused, significantly very high equipment reliability of operation and stability, is saving a large amount of spare part expenses
With while improve equipment operating efficiency, ensure that the operation steady in a long-term of key equipment.It is being switched to electrothermal relay power supply
Afterwards, soft starting main loop is switched back into again when electric motor protecting bypass is broken down to be powered motor.
It should be noted last that above embodiment is only illustrating the technical solution of the utility model rather than limit
System, although the utility model is described in detail with reference to example, it will be understood by those within the art that, can be right
The technical solution of the utility model is modified or equivalent substitution, without departing from the spirit and model of technical solutions of the utility model
Enclose, it all should cover among right of the present utility model.
Claims (6)
1. a kind of automatic switching control device, with motor connection, it is characterised in that the control device includes：
Control PLC；
Soft starting main loop, one end are connected with the control PLC, the other end and the motor connection；
Electric motor protecting is bypassed, and one end is connected with the control PLC, the other end and the motor connection, the electric motor protecting bypass
It is in parallel with the soft starting main loop.
2. automatic switching control device according to claim 1, it is characterised in that the soft starting main loop includes：It is soft
Starter, fuse and breaker；
The current input terminal of the soft initiator is connected by the fuse with the breaker；
The current output terminal of the soft initiator and the motor connection；
The control signal input of the soft initiator is connected with the control PLC.
3. automatic switching control device according to claim 2, it is characterised in that the electric motor protecting bypass includes：Heat
Relay and contactor；
The current input terminal of the electrothermal relay and contactor series connection；
The current output terminal of the electrothermal relay and the motor connection；
The signal control terminal of the electrothermal relay is connected with the control PLC.
4. automatic switching control device according to claim 3, it is characterised in that：
Contactor power taking at the connecting node between the breaker and the fuse.
5. automatic switching control device according to claim 1, it is characterised in that also include：
Transmitting device, one end are connected with the control PLC, and the other end is bypassed respectively with the electric motor protecting and the soft start master
Loop connects.
6. automatic switching control device according to claim 5, it is characterised in that the transmitting device includes：
D nets PLC, is connected with the control PLC；
D net netting twines, one end are connected with D nets PLC, and the other end returns with electric motor protecting bypass and the soft start master respectively
Road connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720833094.XU CN207008393U (en) | 2017-07-11 | 2017-07-11 | A kind of automatic switching control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720833094.XU CN207008393U (en) | 2017-07-11 | 2017-07-11 | A kind of automatic switching control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207008393U true CN207008393U (en) | 2018-02-13 |
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ID=61453654
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720833094.XU Active CN207008393U (en) | 2017-07-11 | 2017-07-11 | A kind of automatic switching control device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111283327A (en) * | 2020-03-04 | 2020-06-16 | 首钢京唐钢铁联合有限责任公司 | Laser source soft starter control method, control circuit, laser welding machine and medium |
-
2017
- 2017-07-11 CN CN201720833094.XU patent/CN207008393U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111283327A (en) * | 2020-03-04 | 2020-06-16 | 首钢京唐钢铁联合有限责任公司 | Laser source soft starter control method, control circuit, laser welding machine and medium |
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