CN207124572U - A kind of bi-motor automatic switching control circuit - Google Patents
A kind of bi-motor automatic switching control circuit Download PDFInfo
- Publication number
- CN207124572U CN207124572U CN201720982647.8U CN201720982647U CN207124572U CN 207124572 U CN207124572 U CN 207124572U CN 201720982647 U CN201720982647 U CN 201720982647U CN 207124572 U CN207124572 U CN 207124572U
- Authority
- CN
- China
- Prior art keywords
- contactor
- tri
- way electromagnetic
- rotary switch
- electromagnetic relay
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Control Of Multiple Motors (AREA)
- Control Of Ac Motors In General (AREA)
- Control Of Direct Current Motors (AREA)
Abstract
The utility model discloses a kind of bi-motor automatic switching control circuit, wherein, frequency converter and the first A.C. contactor are electrically connected with, first A.C. contactor is electrically connected with the 3rd A.C. contactor, the 4th A.C. contactor respectively, second A.C. contactor is electrically connected with the 3rd A.C. contactor, the 4th A.C. contactor respectively, 3rd A.C. contactor and the first motor are electrically connected with, and the 4th A.C. contactor and the second motor are electrically connected with；First two-way electromagnetic relay controls the energization of frequency converter, the second A.C. contactor；Second two-way electromagnetic relay controls the first A.C. contactor, the second A.C. contactor break-make mutual exclusion；3rd two-way electromagnetic relay controls the 3rd A.C. contactor, the 4th A.C. contactor break-make mutual exclusion.Beneficial effect：Circuit structure is compact, moderate cost, can realize the various control strategy such as fixed-frequency control, VFC, manual switching, automatic switchover, exchange-column shift, failover, can meet most Two-channel switching control application demand.
Description
Technical field
Motor control technology field is the utility model is related to, more particularly, to a kind of bi-motor automatic switching control circuit.
Background technology
In low-voltage distribution cabinet Electromechanical Control technology, the situation for needing active and standby bi-motor to automatically switch can be usually run into.Example
Such as the using and the reserved double water pump water system, the using and the reserved formula two fans ventilating system.Common double-machine switching circuit control structure
There are double contactor controls, dual frequency converter control etc..These circuit control structure some are excessively simple, can not meet more complicated control
Demand processed, some structures are excessively complicated, and required part is excessive, poor reliability, and cost is too high.Existing double-machine switching circuit control
Structure processed can not better meet application demand.
Utility model content
The purpose of this utility model is to overcome above-mentioned technical deficiency, proposes a kind of bi-motor automatic switching control circuit,
Solves above-mentioned technical problem of the prior art.
To reach above-mentioned technical purpose, the technical solution of the utility model provides a kind of bi-motor auto-changeover control electricity
Road, including：Main loop circuit, control circuit, main loop circuit include：Breaker, frequency converter, the first A.C. contactor, second
A.C. contactor, the 3rd A.C. contactor, the 4th A.C. contactor, the first motor, the second motor；Breaker is respectively and frequency conversion
Device, the second A.C. contactor are electrically connected with, and frequency converter and the first A.C. contactor are electrically connected with, the first A.C. contactor respectively and
3rd A.C. contactor, the 4th A.C. contactor be electrically connected with, the second A.C. contactor respectively with the 3rd A.C. contactor, the 4th
A.C. contactor is electrically connected with, and the 3rd A.C. contactor and the first motor are electrically connected with, the 4th A.C. contactor and the second motor
It is electrically connected with；Control circuit includes：First two-way electromagnetic relay, the second two-way electromagnetic relay, the 3rd two-way electromagnetism relay
Device, PLC；First two-way electromagnetic relay is electrically connected with frequency converter, the second A.C. contactor respectively, and first
Two-way electromagnetic relay exports enabling signal to frequency converter, the second A.C. contactor and controls frequency converter, the second A.C. contactor
Energization；Normally-closed contact, normally opened contact and the first A.C. contactor, the second A.C. contactor electricity of second two-way electromagnetic relay
Property connection, control the first A.C. contactor, the break-make of the second A.C. contactor；The normally-closed contact of 3rd two-way electromagnetic relay,
Normally opened contact and the 3rd A.C. contactor, the 4th A.C. contactor are electrically connected with, and the 3rd A.C. contactor of control, the 4th exchange connect
The break-make of tentaculum；PLC and the first two-way electromagnetic relay, the second two-way electromagnetic relay, the 3rd two-way electricity
Magnetic relay is electrically connected with.
Compared with prior art, the beneficial effects of the utility model include：The utility model proposes bi-motor cut automatically
Control circuit is changed, compact-sized, moderate cost, fixed-frequency control, VFC, manual switching, automatic switchover, timing for cutting can be realized
Change, the various control strategy such as failover, most Two-channel switching control application demand can be met.
Brief description of the drawings
Fig. 1 is a kind of main loop circuit structure chart of bi-motor automatic switching control circuit provided by the utility model；
Fig. 2 is the schematic diagram of control circuit of the present utility model.
Embodiment
In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, below in conjunction with accompanying drawing and implementation
Example, the utility model is further elaborated.It should be appreciated that specific embodiment described herein is only explaining
The utility model, it is not used to limit the utility model.
The utility model provides a kind of bi-motor automatic switching control circuit, including：Main loop circuit, control circuit,
Main loop circuit includes：Circuit breaker Q F1, frequency converter VFD, the first A.C. contactor KM1, the second A.C. contactor KM2, the 3rd hand over
Flow contactor KM3, the 4th A.C. contactor KM4, the first motor M1, the second motor M2；Circuit breaker Q F1 respectively with frequency converter VFD,
Second A.C. contactor KM2 is electrically connected with, and frequency converter VFD and the first A.C. contactor KM1 are electrically connected with, the first A.C. contactor
KM1 respectively with the 3rd A.C. contactor KM3, the 4th A.C. contactor KM4 be electrically connected with, the second A.C. contactor KM2 respectively and
3rd A.C. contactor KM3, the 4th A.C. contactor KM4 are electrically connected with, and the 3rd A.C. contactor KM3 and the first motor M1 are electrical
Connection, the 4th A.C. contactor KM4 and the second motor M2 are electrically connected with；
In above-mentioned technical proposal, control circuit includes：First two-way electromagnetic relay KV1, the second two-way electromagnetic relay
KV2, the 3rd two-way electromagnetic relay KV3, PLC；PLC and the first two-way electromagnetic relay
KV1, the second two-way electromagnetic relay KV2, the 3rd two-way electromagnetic relay KV3 are electrically connected with.Second two-way electromagnetic relay KV2
Normally-closed contact, normally opened contact and the first A.C. contactor KM1, the second A.C. contactor KM2 be electrically connected with, control first exchange
Contactor KM1, the second A.C. contactor KM2 break-make, optionally, the second two-way electromagnetic relay KV2 normally-closed contact connect
One A.C. contactor KM1 coil, normally opened contact connect the second A.C. contactor KM2 coil, pass through the second two-way electromagnetism relay
Device KV2 realizes the first A.C. contactor KM1, the second A.C. contactor KM2 break-make mutual exclusion；First A.C. contactor KM1, second
A.C. contactor KM2 break-make mutual exclusion protects frequency converter VFD not burnt due to output backward voltage.3rd two-way electromagnetism after
Electrical equipment KV3 normally-closed contact, normally opened contact and the 3rd A.C. contactor KM3, the 4th A.C. contactor KM4 electric connection, control
3rd A.C. contactor KM3, the 4th A.C. contactor KM4 break-make, optionally, the 3rd two-way electromagnetic relay KV3's is normally closed
Contact connects the 3rd A.C. contactor KM3 coil, and normally opened contact connects the 4th A.C. contactor KM4 coil, passes through the 3rd two-way
Electromagnetic relay KV3 realizes the 3rd A.C. contactor KM3, the 4th A.C. contactor KM4 break-make mutual exclusion；Start when needing selection
During the first motor M1, KM3 adhesives, KM4 disconnects, and when needing to select to start the second motor M2, KM4 adhesives, KM3 disconnects, and the 3rd
A.C. contactor KM3, the 4th A.C. contactor KM4 break-make mutual exclusion ensure that synchronization only allows an electric motor starting, prevent
Only overload.First two-way electromagnetic relay KV1 is electrically connected with frequency converter VFD, the second A.C. contactor KM2 respectively, first pair
Road electromagnetic relay KV1 exports enabling signal to frequency converter VFD, the second A.C. contactor KM2 and controls frequency converter VFD, second
A.C. contactor KM2 energization.
In above-mentioned technical proposal, if Fig. 2 is in the schematic diagram of control circuit, KV1-1, KV1-2 represents two of KV1 respectively
Contact, KV2-1, KV2-2 represent KV2 two contacts respectively, and KV3-1, KV3-2 represent KV3 two contacts respectively, and FU is represented
Fuse.
In above-mentioned technical proposal, the second two-way electromagnetic relay KV2 realizes that the first A.C. contactor KM1, the second exchange connect
Tentaculum KM2 break-make mutual exclusion, i.e. frequency/frequency conversion of determining that KV2 is responsible for circuit switch, and the 3rd two-way electromagnetic relay KV3 realizes the 3rd
The first motor M1 is responsible in A.C. contactor KM3, the 4th A.C. contactor KM4 break-make mutual exclusion, i.e. KV3, the second motor M2 is cut
Change；Main loop circuit shares four kinds of work according to frequency conversion/fixed frequency, first motor M1/ the second motor M2 combination of two at work
State；When using conversion system control, KM1 adhesives, KM2 disconnects, and now the driving power source of motor is in frequency converter VFD,
Frequency converter VFD provides frequency conversion electric power source, when using determine frequency mode and controlling, KM1 disconnections, KM2 adhesives, now motor directly pass through
KM2 power takings.
In above-mentioned technical proposal, control circuit also includes electrothermal relay KH1, the second A.C. contactor KM2 and electrothermal relay
KH1 is connected, and electrothermal relay KH1 is electrically connected with the 3rd A.C. contactor KM3, the 4th A.C. contactor KM4 respectively；Electrothermal relay
KH1 can long time running overheat of anti-fastening frequency when starting motor, electrothermal relay KH1 can cut off the second A.C. contactor during overheat
KM2 coil power, so as to disconnect motor power.
In above-mentioned technical proposal, control circuit also includes time-delay relay KT1, the second chain drivings of A.C. contactor KM2
Time-delay relay KT1, when the second A.C. contactor KM2 is turned to by adhesive to be disconnected, time-delay relay KT1 controls and frequency converter
The first A.C. contactor KM1 delay adhesives of VFD connections, in order to avoid when turning to frequency conversion by determining frequency, too fast handover operation causes
The recoil residual voltage damage frequency converter VFD of motor.
In above-mentioned technical proposal, control circuit also include the first tri-state rotary switch SA1, the second tri-state rotary switch SA2,
3rd tri-state rotary switch SA3：
First tri-state rotary switch SA1 one end contact portion PLC, the first tri-state rotary switch SA1
Other end contact portion the first two-way electromagnetic relay KV1, when the first tri-state rotary switch SA1 rotates to different gears by
PLC or the fixation 24V current potentials of the first tri-state rotary switch SA1 connections are to the first two-way electromagnetic relay KV1
Send electric signal；
Optionally, SA1 points of the first tri-state rotary switch is three gears, " starting gear ", " retaining catch ", " automatic catch ", " is started
Gear " connects 24V circuits, and when SA1 rotates to startup gear, SA1 sends electric signal to KV1, and KV1 is to frequency converter VFD, the second ac contactor
Device KM2 exports enabling signal and makes frequency converter VFD, the second A.C. contactor KM2 energization, when SA1 rotates to retaining catch, KV1
Frequency converter VFD, the second A.C. contactor KM2 power-off are controlled, whole down circuitry, when SA1 rotates to automatic catch, PLC is according to PLC
Middle pre-set programs are taken KV1 through the first tri-state rotary switch SA1 and automatically controlled.
Second tri-state rotary switch SA2 one end contact portion PLC, the second tri-state rotary switch SA2
Other end contact portion the second two-way electromagnetic relay KV2, when the second tri-state rotary switch SA2 rotates to different gears by
PLC or the fixation 24V current potentials of the second tri-state rotary switch SA2 connections are to the second two-way electromagnetic relay KV2
Send electric signal；
Optionally, SA2 points of the second tri-state rotary switch is three gears, " fixed frequency is kept off ", " frequency conversion gear ", " automatic catch ", " determines frequency
Gear " connects 24V circuits, and (the second two-way electromagnetic relay KV2 normally-closed contact connects the first A.C. contactor KM1 coil, normally opened to touch
Point connects the second A.C. contactor KM2 coil), determine frequency gear when SA2 is rotated to, SA2 sends electric signal, KV2 controls KM1 to KV2
Disconnect, control KM2 adhesives, now motor starts frequently surely, and when SA2 rotates to frequency conversion gear, KM1 adhesives, KM2 disconnects, now motor
Variable frequency starting, when SA2 rotates to automatic catch, PLC is taken KV2 according to pre-set programs in PLC through the second tri-state rotary switch SA2
Automatically control.
3rd tri-state rotary switch SA3 one end contact portion PLC, the 3rd tri-state rotary switch SA3
Other end contact portion the 3rd two-way electromagnetic relay KV3, when the 3rd tri-state rotary switch SA3 rotates to different gears by
PLC or the fixation 24V current potentials of the 3rd tri-state rotary switch SA3 connections are to the 3rd two-way electromagnetic relay KV3
Send electric signal；
Optionally, SA3 points of the 3rd tri-state rotary switch keeps off for three, " motor 2 is kept off ", " motor 1 is kept off ", " automatic catch ", " motor
2 gears " connect 24V circuits, and (the 3rd two-way electromagnetic relay KV3 normally-closed contact connects the 3rd A.C. contactor KM3 coil, normally opened
Contact connects the 4th A.C. contactor KM4 coil), kept off when SA3 rotates to motor 2, SA3 sends electric signal, KV3 controls to KV3
KM3 disconnects, and controls KM4 adhesives, and now the second motor M2 starts, and is kept off when SA3 rotates to motor 1, KM3 adhesives, and KM4 disconnects, this
When the first motor M1 start, when SA3 rotates to automatic catch, PLC is according to pre-set programs in PLC through the 3rd tri-state rotary switch SA3
KV3 is taken and automatically controlled.
In above-mentioned technical proposal, when using manual manual control, KV1, KV2, KV3 coil control signal by SA1,
SA2, SA3 are provided, can be by rotating SA1, SA2, SA3 to different gear (" startup is kept off ", " retaining catch ", " fixed frequency is kept off ", " change
Frequency gear ", " motor 2 is kept off ", " motor 1 is kept off ") so as to start and stop or switching circuit working condition, when SA1 or SA2 or SA3 is rotated to
Automatic catch, PLC take corresponding KV1, KV2, KV3 according to pre-set programs in PLC and automatically controlled, and automatically controlling may include timing
(PLC leads to switch motor when switch motor (state for changing relay KV1-KV3 in good time by the timer inside PLC), failure
Cross the state collected and fault-signal judge how this selects to start motor) etc..
Compared with prior art, the beneficial effects of the utility model include：The utility model proposes bi-motor cut automatically
Control circuit is changed, compact-sized, moderate cost, fixed-frequency control, VFC, manual switching, automatic switchover, timing for cutting can be realized
Change, the various control strategy such as failover, most Two-channel switching control application demand can be met.
Specific embodiment of the present utility model described above, the restriction to scope of protection of the utility model is not formed.
Any various other corresponding changes and deformation made according to technical concept of the present utility model, should be included in this practicality
In new scope of the claims.
Claims (4)
- A kind of 1. bi-motor automatic switching control circuit, it is characterised in that including：Main loop circuit, control circuit, the master return Road circuit includes：Breaker, frequency converter, the first A.C. contactor, the second A.C. contactor, the 3rd A.C. contactor, the 4th hand over Flow contactor, the first motor, the second motor；The breaker is electrical with the frequency converter, second A.C. contactor respectively Connection, the frequency converter and first A.C. contactor are electrically connected with, and first A.C. contactor is respectively with the described 3rd A.C. contactor, the 4th A.C. contactor are electrically connected with, and second A.C. contactor exchanges with the described 3rd connect respectively Tentaculum, the 4th A.C. contactor are electrically connected with, and the 3rd A.C. contactor and first motor are electrically connected with, described 4th A.C. contactor and second motor are electrically connected with；The control circuit includes：First two-way electromagnetic relay, second Two-way electromagnetic relay, the 3rd two-way electromagnetic relay, PLC；The first two-way electromagnetic relay difference It is electrically connected with the frequency converter, second A.C. contactor, the first two-way electromagnetic relay is to the frequency converter, institute State the second A.C. contactor output enabling signal and control the energization of the frequency converter, second A.C. contactor；Described Normally-closed contact, normally opened contact and first A.C. contactor, second A.C. contactor electricity of two two-way electromagnetic relays Property connection, control the first A.C. contactor, the break-make of the second A.C. contactor；The normally closed of the 3rd two-way electromagnetic relay is touched Point, normally opened contact and the 3rd A.C. contactor, the 4th A.C. contactor are electrically connected with, and control the 3rd exchange connects The break-make of tentaculum, the 4th A.C. contactor；The PLC and the first two-way electromagnetic relay, institute State the second two-way electromagnetic relay, the 3rd two-way electromagnetic relay is electrically connected with.
- 2. bi-motor automatic switching control circuit as claimed in claim 1, it is characterised in that the control circuit also includes heat Relay, second A.C. contactor are connected with the electrothermal relay, and the electrothermal relay exchanges with the described 3rd connect respectively Tentaculum, the 4th A.C. contactor are electrically connected with.
- 3. bi-motor automatic switching control circuit as claimed in claim 1, it is characterised in that the control circuit also includes prolonging When relay, the chain driving time-delay relay of second A.C. contactor, the time-delay relay control described first A.C. contactor postpones adhesive.
- 4. bi-motor automatic switching control circuit as claimed in claim 1, it is characterised in that the control circuit also includes the One tri-state rotary switch, the second tri-state rotary switch, the 3rd tri-state rotary switch；Touch one end of the first tri-state rotary switch Point connects the PLC, the first two-way electricity described in the other end contact portion of the first tri-state rotary switch Magnetic relay, by the PLC or described first when the first tri-state rotary switch rotates to different gears Tri-state rotary switch sends electric signal to the first two-way electromagnetic relay；One terminal contacts of the second tri-state rotary switch Connect the PLC, the second two-way electromagnetism described in the other end contact portion of the second tri-state rotary switch Relay, by the PLC or the described 2nd 3 when the second tri-state rotary switch rotates to different gears State rotary switch sends electric signal to the second two-way electromagnetic relay；One terminal contacts of the 3rd tri-state rotary switch connect Connect the PLC, the 3rd two-way electromagnetism described in the other end contact portion of the 3rd tri-state rotary switch after Electrical equipment, by the PLC or the 3rd tri-state when the 3rd tri-state rotary switch rotates to different gears Rotary switch sends electric signal to the 3rd two-way electromagnetic relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720982647.8U CN207124572U (en) | 2017-08-08 | 2017-08-08 | A kind of bi-motor automatic switching control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720982647.8U CN207124572U (en) | 2017-08-08 | 2017-08-08 | A kind of bi-motor automatic switching control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207124572U true CN207124572U (en) | 2018-03-20 |
Family
ID=61613662
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720982647.8U Active CN207124572U (en) | 2017-08-08 | 2017-08-08 | A kind of bi-motor automatic switching control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207124572U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111077842A (en) * | 2019-12-12 | 2020-04-28 | 首钢京唐钢铁联合有限责任公司 | Automatic switching control system for alloy electric vibration fault behind converter |
-
2017
- 2017-08-08 CN CN201720982647.8U patent/CN207124572U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111077842A (en) * | 2019-12-12 | 2020-04-28 | 首钢京唐钢铁联合有限责任公司 | Automatic switching control system for alloy electric vibration fault behind converter |
| CN111077842B (en) * | 2019-12-12 | 2022-12-13 | 首钢京唐钢铁联合有限责任公司 | Automatic switching control system for alloy electric vibration fault behind converter |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203788042U (en) | Circuit capable of realizing automatic switching of two-way power supply | |
| CN202374037U (en) | Double-power on-line automatic switching device | |
| CN104110800A (en) | Air conditioner, and on-off control method and on-off control system for resistive load | |
| CN207124572U (en) | A kind of bi-motor automatic switching control circuit | |
| CN201821309U (en) | Control circuit for controlling forward rotation and reverse rotation of motor through PLC (programmable logic controller) | |
| CN210536349U (en) | Full-automatic uninterrupted power supply dual-power supply system | |
| CN102868214A (en) | utomatic standby power supply switching box in small water power station | |
| CN207926267U (en) | a kind of UPS system | |
| CN203617935U (en) | Overload starting control device for low-power motor | |
| CN103532445B (en) | A kind of startup control device of heavy load start of motor and control method thereof | |
| CN207504787U (en) | A kind of low voltage motor control system | |
| CN202818190U (en) | High-reliability micro motor rapid brake system | |
| CN203774865U (en) | A dual power switching circuit for fan power supply and a high-voltage inverter | |
| CN104578390A (en) | Double-power-supply automatic switching device and control method thereof | |
| CN204361781U (en) | There is the protection switch of automatic reclosing function | |
| CN208257499U (en) | Dual power supply automatic bus | |
| CN202435122U (en) | Two-path power supply circuit | |
| CN203070136U (en) | Heating and dehumidifying logic circuit with defrosting function | |
| CN207652133U (en) | The dual power supply automatic switching device of electric spray type generating set and alternating current | |
| CN205595782U (en) | Inrush current restraines return circuit | |
| CN204141793U (en) | A kind of Central air-conditioning unit chilled water control circuit | |
| CN207338244U (en) | A kind of drive circuit of relay | |
| CN202696520U (en) | Frame switch control loop with motor controller | |
| CN206759150U (en) | A kind of intelligent UPS device | |
| CN110838711A (en) | Anti-interference circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |