CN207339712U - Circuit for controlling motor - Google Patents
Circuit for controlling motor Download PDFInfo
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- CN207339712U CN207339712U CN201721165149.0U CN201721165149U CN207339712U CN 207339712 U CN207339712 U CN 207339712U CN 201721165149 U CN201721165149 U CN 201721165149U CN 207339712 U CN207339712 U CN 207339712U
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- circuit
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- frequency converter
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Abstract
It the utility model is related to the New-type electric machine control circuit used in a kind of circuit for controlling motor, especially motor control box.The circuit includes the overload or under-voltage protective module that input terminal is connected with 380V three phase mains; the overload or the output terminal connection frequency converter of under-voltage protective module; the frequency converter connection motor, the overload or under-voltage protective module are also associated with one and send the frequency-variable controller of control signal to frequency converter and the switch power module of power supply is provided to frequency-variable controller.The circuit for controlling motor of the utility model is while motor safety stable operation under ensureing single scene, the output frequency of frequency converter can be adjusted by frequency-variable controller, during so that connecting the motor of different size under different usage scenarios, circuit need not be changed, output parameter can be adjusted by frequency-variable controller, use demand of the circuit for controlling motor to different scenes is improved, operation is also more convenient.
Description
Technical field
It the utility model is related to the New-type electric machine control electricity used in a kind of circuit for controlling motor, especially motor control box
Road.
Background technology
In existing industrial production activities, industrial motor has extensive reference, and existing industrial motor is generally
Three phase electric machine, such motor is powered using the three-phase alternating current of 380V when in use, and is equipped with electric cabinet and is carried out operation control, existing
Three firewire cables being connected with 380V power supplys and a ground wire cable, firewire electricity are generally comprised in some electric cabinet circuit connections
Cable connects a frequency converter with low-voltage circuit breaker via on-load switch respectively, and ground wire is directly connected to and frequency converter and is grounded, frequency converter
It is connected with three phase electric machine.
During work, on-load switch plays the role of arc-control device, and when needing to close circuit, pulls down switch manually just
Rated load current can be cut off, realizes power-off manually；Low-voltage circuit breaker is to distribute electric energy, when starting motor to power circuit
And the implementation such as motor protection, when they occur it is serious overload or it is short-circuit and it is under-voltage when failure when can automatic shutdown circuit,
Realization automatically powers off；Frequency converter controls the Electric control of ac motor to set by varying motor working power Frequency Patterns
Standby and then energy saving, speed governing purpose, realizes the basic function of motor operation.
For existing circuit for controlling motor when controlling motor work, frequency converter can only be according to the fortune of single scenery control motor
OK, in today of industrialization degree universalness, motor is widely used in various production lines, continuous productive process platform and logistics and turns
Run in industry, for different sector applications, circuit for controlling motor also generates different types accordingly, in different work
Under environment, for motor operating functional diversity and device security requirement it is also different, after necessary electromotor is changed, it is necessary to
Replace corresponding frequency converter and just adapt to new use demand, be related to the replacement of circuit modification and component, it is complicated.
The content of the invention
In order to solve the above-mentioned technical problem, the utility model provides that a kind of easily to effectively adapt to frequency converter different
Motor use demand circuit for controlling motor.
The circuit includes the overload or under-voltage protective module that input terminal is connected with 380V three phase mains, the overload or deficient
The output terminal connection frequency converter of protection module, frequency converter connection motor are pressed, its improvement is：The overload or under-voltage
Protection module is also associated with one and sends the frequency-variable controller of control signal to frequency converter and provide power supply to frequency-variable controller
Switch power module.
Preferably, the overload or under-voltage protective module are low-voltage circuit breaker, and the input terminal of low-voltage circuit breaker connects
Three firewires of 380V three phase mains, the output terminal of low-voltage circuit breaker connect the input terminal of frequency converter, frequency conversion by three firewires
The zero curve of the zero curve connection 380V three phase mains of device, the output terminal firewire of frequency converter and the leading firewire and zero for connecting motor respectively
Line.
Preferably, the frequency-variable controller is programmable logic controller (PLC).
Preferably, it is its 220V that the firewire all the way of the 380V three phase mains, which connects programmable logic controller (PLC) with zero curve,
Startup power supply.
Preferably, the firewire all the way of 380V three phase mains and zero curve connecting valve power supply, Switching Power Supply turn 220V power supplys
Connected after turning to 24V and be transported to programmable logic controller (PLC) and input and output working power is provided.
The circuit for controlling motor of the utility model passes through change while motor safety stable operation under ensureing single scene
Frequency controller can adjust the output frequency of frequency converter so that when the motor of different size is connected under different usage scenarios,
Circuit need not be changed, you can output parameter is adjusted by frequency-variable controller, improves circuit for controlling motor to different scenes
Use demand, operation are also more convenient.
Brief description of the drawings
Fig. 1 is the modular structure schematic diagram of the utility model embodiment；
Fig. 2 is the wire connection structure schematic diagram of the utility model embodiment.
Embodiment
As Figure 1-Figure 2, the circuit for controlling motor in the embodiment of the utility model includes input terminal and 380V three-phases
The output terminal connection frequency converter 3 of the overload or under-voltage protective module 2 that power supply 1 connects, the overload or under-voltage protective module 2,
The frequency converter 3 connects motor 4, and the overload or under-voltage protective module 2 are also associated with one and send control letter to frequency converter 3
Number frequency-variable controller 5 and to frequency-variable controller 5 provide power supply switch power module 6.
In the present embodiment, the overload or under-voltage protective module 2 are low-voltage circuit breaker, and the input terminal of low-voltage circuit breaker connects
Three firewires of 380V three phase mains are connect, the output terminal of low-voltage circuit breaker connects the input terminal of frequency converter 3 by three firewires, becomes
The zero curve of the zero curve connection 380V three phase mains 1 of frequency device 3, the output terminal firewire of frequency converter 3 and the leading fire for connecting motor 4 respectively
Line and zero curve.
In the present embodiment, the frequency-variable controller 5 is programmable logic controller (PLC).
In the present embodiment, the firewire all the way of the 380V three phase mains 1 connects programmable logic controller (PLC) with zero curve and is
It is powered.
In the present embodiment, the firewire all the way and zero curve connecting valve power supply of 380V three phase mains, Switching Power Supply by 220V electricity
Source, which connects after being converted into 24V and is transported to programmable logic controller (PLC), provides power supply.
During work, cable is drawn at 380V power supplys, first connects a low-voltage circuit breaker to distribute electric energy, this low pressure
Breaker when starting motor to the implementations such as power circuit and motor protect, when they occur it is serious overload or short circuit and
Under-voltage energy automatic shutdown circuit, realization when failure automatically power off；Frequency converter is then attached to, by varying motor working power
Frequency Patterns control the electric control appliance of ac motor, and then energy saving, speed governing purpose, realize motor operation
Basic function.
Programmable logic controller (PLC) input/output point is docked with frequency converter, then controls motor operating.After program write-in,
Without manual intervention, equipment automatic running is reliable and stable, reduces manpower, reduces failure rate, saves cost.Using programmable
The powerful control function of logic controller, can apply, actual items demand, actual client make a reservation for realize according to actual place
The intelligence of motor, automated operation.
In the present embodiment, it is it that the firewire all the way of the 380V three phase mains, which connects programmable logic controller (PLC) with zero curve,
220V startup power supplies；The firewire all the way and zero curve connecting valve power supply of 380V three phase mains, Switching Power Supply is by 220V power conversions
Input and output working power is provided for programmable logic controller (PLC) is connected and be transported to after 24V.
In conclusion this new circuit control structure can reach energy conservation and environmental protection, safe and reliable, high-intelligentization, height certainly
The control performance of dynamicization.In the case of overcurrent, overload protection, realization is instant, accurately controls motor action, and can guarantee that
In the case of having accident, manual manipulation breaker can power off, meet needed for most of industrialized production at any time, possess applicability and
Generalization, with the continuous improvement of industrial automatization, such a circuit for controlling motor pattern has also obtained very in practice
It is widely applied.
The above is only the preferred embodiment of the present invention, and it does not limit the scope of the patent of the present invention,
Every equivalent structure or equivalent flow shift made based on the specification and figures of the utility model, is directly or indirectly transported
Used in other related technical areas, it is equally included in the patent within the scope of the utility model.
Claims (5)
1. circuit for controlling motor, including the overload or under-voltage protective module that input terminal is connected with 380V three phase mains, the mistake
Carry or the output terminal of under-voltage protective module connection frequency converter, the frequency converter connect motor, it is characterised in that：The overload
Or under-voltage protective module is also associated with one and sends the frequency-variable controller of control signal to frequency converter and provided to frequency-variable controller
The switch power module of power supply.
2. circuit for controlling motor as claimed in claim 1, it is characterised in that：The overload or under-voltage protective module are low pressure
Breaker, three firewires of the input terminal connection 380V three phase mains of low-voltage circuit breaker, the output terminal of low-voltage circuit breaker pass through three
Root firewire connects the input terminal of frequency converter, the zero curve of the zero curve connection 380V three phase mains of frequency converter, the output terminal fire of frequency converter
Line and the leading firewire and zero curve for connecting motor respectively.
3. circuit for controlling motor as claimed in claim 2, it is characterised in that：The frequency-variable controller is programmable logic control
Device processed.
4. circuit for controlling motor as claimed in claim 3, it is characterised in that：The firewire all the way of the 380V three phase mains and
Zero curve connection programmable logic controller (PLC) is its startup power supply.
5. circuit for controlling motor as claimed in claim 4, it is characterised in that：The firewire all the way and zero curve of 380V three phase mains connect
Switching Power Supply is connect, Switching Power Supply provides 220V power conversions to input to be connected after 24V and being transported to programmable logic controller (PLC)
Output power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721165149.0U CN207339712U (en) | 2017-09-12 | 2017-09-12 | Circuit for controlling motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721165149.0U CN207339712U (en) | 2017-09-12 | 2017-09-12 | Circuit for controlling motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207339712U true CN207339712U (en) | 2018-05-08 |
Family
ID=62368884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721165149.0U Active CN207339712U (en) | 2017-09-12 | 2017-09-12 | Circuit for controlling motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207339712U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114069942A (en) * | 2021-12-08 | 2022-02-18 | 今峰精密机电（上海）有限公司 | Gear reduction single-phase asynchronous motor suitable for low-temperature environment |
-
2017
- 2017-09-12 CN CN201721165149.0U patent/CN207339712U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114069942A (en) * | 2021-12-08 | 2022-02-18 | 今峰精密机电（上海）有限公司 | Gear reduction single-phase asynchronous motor suitable for low-temperature environment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: DC motor control circuit and DC motor Effective date of registration: 20200529 Granted publication date: 20180508 Pledgee: Guangdong Nanhai Rural Commercial Bank branch branch of Limited by Share Ltd. Pledgor: FOSHAN JINJIA ELECTROMECHANICAL Co.,Ltd. Registration number: Y2020980002624 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |