CN207530733U - The control circuit of motor - Google Patents
The control circuit of motor Download PDFInfo
- Publication number
- CN207530733U CN207530733U CN201721774986.3U CN201721774986U CN207530733U CN 207530733 U CN207530733 U CN 207530733U CN 201721774986 U CN201721774986 U CN 201721774986U CN 207530733 U CN207530733 U CN 207530733U
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- motor
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- output terminal
- switch
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- Control Of Ac Motors In General (AREA)
Abstract
The utility model provides a kind of novel in structural design, the control circuit for the motor for having electric motor protecting, it includes motor, and the motor is connect by major loop with 380V power supplys；The major loop includes the circuit breaker Q F1, A.C. contactor KM, the motor protecter KB that are sequentially connected in series, and the output terminal of the motor protecter KB and the power interface of motor are correspondingly connected with, and the circuit breaker Q F1 input terminals are connect with 380V power supplys；Further include control circuit；The control circuit includes change-over switch SA of the tool there are two output terminal, and the input terminal of change-over switch SA is connect with power supply；Preferably, manual controlling brancher, PLC controlling branchers are connected separately on two output terminals of the change-over switch SA；Further include protection circuit.
Description
Technical field
The utility model is related to a kind of circuit more particularly to a kind of control electricity of motor for being used to control blender
Road.
Background technology
Because of UNITANK technological reasons, biochemistry pool B lattice blender must run without interruption for daily 24 hours, and it lacks phase
Protective device is closed, equipment motor is easily burnt when encountering catastrophic failure, and is repaired motor and taken longer influence production and its dimension
It repaiies costly.
Invention content
The purpose of the utility model is to overcome the deficiencies in the prior art, adapt to real needs, provide a kind of structure design
The control circuit of motor that is novel, having electric motor protecting.
In order to realize the purpose of this utility model, technical solution is used by the utility model：
A kind of control circuit of motor is designed, it includes motor, and the motor is connect by major loop with 380V power supplys；Institute
It states major loop and includes the circuit breaker Q F1, A.C. contactor KM, the motor protecter KB that are sequentially connected in series, the motor protecter
The output terminal of KB and the power interface of motor are correspondingly connected with, and the circuit breaker Q F1 input terminals are connect with 380V power supplys；
Preferably, the A.C. contactor KM is A.C. contactor open in usual；
Preferably, the A phases power cord on the motor protecter KB output terminals is equipped with current transformer TA；
Preferably, the timer being correspondingly connected with B, C phase power cord on the motor protecter KB output terminals is further included
KB1, the output terminal of the timer KB1 are connect with the control signal of motor protecter KB；
Preferably, control circuit is further included；
Preferably, there are two the change-over switch SA of output terminal, the inputs of change-over switch SA including a tool for the control circuit
End is connect with power supply；
Preferably, manual controlling brancher, PLC control branch are connected separately on two output terminals of the change-over switch SA
Road；
Preferably, the manual controlling brancher includes the normally closed type being connected in series with switch SB2, switch SB1 open in usual；
Preferably, the input terminal of the normally closed type switch SB2 is connect with the first output terminal of change-over switch SA；
Preferably, the control signal input of the output terminal and the A.C. contactor KM of the switch SB1 open in usual connects
It connects；
Preferably, the output terminal of the switch SB1 open in usual passes through normally closed type motor protecter KB2 and a normally closed type relay
The control signal input connection of device KA1；
Preferably, the PLC controlling branchers include a PLC controller, it is described it is open in usual switch SB1 output terminal also with institute
State one of input terminal connection of PLC controller；
Preferably, it is connected with touching display screen in the PLC controller；
Preferably, the first output terminal of the change-over switch SA also with one of input terminal in the PLC controller
Connection；
Preferably, the control signal input of the A.C. contactor KM also with one of them in the PLC controller
Input terminal connects；
Preferably, protection circuit is further included；
Preferably, it is relay open in usual that the protection circuit, which includes power transfer relay KA2, the power transfer relay KA2,；
Preferably, the input terminal of power transfer relay KA2 is connect with power supply, and the output terminal of power transfer relay KA2 passes through normally opened
Formula circuit breaker Q F2 connects and composes access with power supply；
Preferably, the output terminal of the power transfer relay KA2 is also inputted with the control signal of the normal closing type relay KA1
End connection；
Preferably, the output terminal of the power transfer relay KA2 also connects with one of input terminal in the PLC controller
It connects.
Preferably, the run indicator HG1 being connected in parallel below the output terminal of switch SB1 open in usual, operation are further included
Indicator light HG2.
Preferably, trouble light HY1, HY2 are connected in parallel on the power transfer relay KA2.
Preferably, the input terminal of the change-over switch SA is connect by fuse FU2 with power supply.
Preferably, the input terminal of the power transfer relay KA2 is connect by fuse FU1 with power supply.
The beneficial effects of the utility model are：
Its novel in structural design of the design, and have protective device, when detecting excess load and phase shortage, this circuit can be certainly
Dynamic cut-out motor device, stops motor device operation, protects motor, prolong the service life, reduce maintenance cost in time.
Description of the drawings
Fig. 1 is the electric appliance principle schematic of the utility model；
Fig. 2 is the PLC controller catenation principle schematic diagram in this circuit.
Specific embodiment
The utility model is further illustrated with reference to the accompanying drawings and examples：
Embodiment 1：A kind of control circuit of motor, referring to Fig. 1, Fig. 2；It includes motor M, and the motor M is by leading back
Road 100 is connect with 380V power supplys.
Specifically, the major loop 100 includes the circuit breaker Q F1, A.C. contactor KM, the electric motor protecting that are sequentially connected in series
Device KB, the power interface of the output terminal and motor M of the motor protecter KB are correspondingly connected with, the circuit breaker Q F1 input terminals with
380V power supplys connect.
The A.C. contactor KM is A.C. contactor open in usual.
Further, the A phases power cord on the motor protecter KB output terminals is equipped with current transformer TA.
Further, the timing being correspondingly connected with B, C phase power cord on the motor protecter KB output terminals is further included
Device KB1, the output terminal of the timer KB1 are connect with the control signal of motor protecter KB.
Further include control circuit 101；The control circuit 101 includes change-over switch SA of the tool there are two output terminal, turns
The input terminal for changing switch SA is connect by fuse FU2 with power supply.
Manual controlling brancher, PLC controlling branchers are connected separately on two output terminals of the change-over switch SA.
Specifically, the manual controlling brancher includes the normally closed type being connected in series with switch SB2, switch SB1 open in usual；It is described
The input terminal of normally closed type switch SB2 is connect with the first output terminal of change-over switch SA；It is described it is open in usual switch SB1 output terminal with
The control signal input connection of the A.C. contactor KM.
Further include the run indicator HG1 being connected in parallel below the output terminal of switch SB1 open in usual, run indicator
HG2。
Further, the output terminal of the switch SB1 open in usual by normally closed type motor protecter KB2 and a normally closed type after
The control signal input connection of electric appliance KA1.
Specifically, the PLC controlling branchers include a PLC controller, it is described it is open in usual switch SB1 output terminal also with institute
State one of input terminal connection of PLC controller.
Further, it is connected with touching display screen in the PLC controller.
Further, the first output terminal of the change-over switch SA also with one of input in the PLC controller
End connection.
Further, the control signal input of the A.C. contactor KM also with wherein one in the PLC controller
A input terminal connection.
Further include protection circuit.
Specifically, it is relay open in usual that the protection circuit, which includes power transfer relay KA2, the power transfer relay KA2,.
Further, the input terminal of power transfer relay KA2 is connect by fuse FU1 with power supply, power transfer relay KA2's
Output terminal connects and composes access by circuit breaker Q F2 open in usual and power supply；
Further, the output terminal of the power transfer relay KA2 is also defeated with the control signal of the normal closing type relay KA1
Enter end connection；
Further, the output terminal of the power transfer relay KA2 also with one of input terminal in the PLC controller
Connection.
Further, trouble light HY1, HY2 are connected in parallel on the power transfer relay KA2.
As shown in Figure 1, further include the ammeter PA being connect with protection circuit in parallel.
The control principle of this circuit is as follows：
1. on-site manual controls
Exchange that 1.1 rotary sampling switch SA are reversed to 1-2 contactings --- scene presses switch SB1 open in usual ---
Contactor KM coils obtain it is electric, A.C. contactor KM normally opened contacts become it is normally closed, then A.C. contactor KM main contacts be closed --- electricity
Machine M energization operating --- run indicator HG1, run indicator HG2 lamps are bright --- PLC controller controls show that touch screen is shown
Run signal and simultaneously motor M startups.
1.2 scene pressing normally closed type switch SB2 buttons --- A.C. contactor KM coil losing electricities --- A.C. contactor KM
Opened point restores normally opened, and A.C. contactor KM main contacts disconnects --- motor M shuts down ---, and HG2 and HG1 running indicators go out.
--- circuit breaker Q F1 trips --- opened point of circuit breaker Q F2 switches open in usual is closed --- during 1.3 line short
Power transfer relay KA2 obtains electric --- and the normally closed points of normal closing type relay KA1 become opened point, and normal closing type relay KA1 is disconnected --- it hands over
Flow contactor KM main contacts to disconnect --- motor M shuts down --- HG2 and HG1 running indicators go out --- trouble light HY1, HY2 lamp
Bright --- PLC controller input signal --- shows that touch screen shows fault message.
When 1.4 equipment have overload, phase shortage --- timer KB1 starts timing, more than motor protecter KB after setting time
Normally closed point becomes opened point --- A.C. contactor K dead electricity, and A.C. contactor K main contacts disconnects --- and motor M is out of service.
2.PLC is controlled.
2.1 rotary sampling switch SA are reversed to 3-4 contactings --- and Central Control Room, which is clicked, shows that touch screen starts motor M
（Or it is controlled according to program）--- PLC controller enabled instruction --- A.C. contactor KM obtains electric, and A.C. contactor KM is closed contact
Closing --- motor M is run.
2.2 rotary sampling switch SA are reversed to 3-4 contactings --- and Central Control Room, which is clicked, shows that touch screen stops motor M
（Or it is controlled according to program）--- PLC controller halt instruction --- A.C. contactor KM dead electricity, A.C. contactor KM break contact
Opening --- motor M is out of service.
What the embodiment of the utility model was announced is preferred embodiment, and however, it is not limited to this, the common skill of this field
Art personnel easily according to above-described embodiment, understand the spirit of the utility model, and make different amplification and variation, but as long as
The spirit of the utility model is not departed from, it is all within the protection scope of the present utility model.
Claims (5)
1. a kind of control circuit of motor, it includes motor, and the motor is connect by major loop with 380V power supplys；Its feature exists
In：The major loop includes the circuit breaker Q F1 being sequentially connected in series, A.C. contactor KM, motor protecter KB, and the motor is protected
The output terminal of shield device KB and the power interface of motor are correspondingly connected with, and the circuit breaker Q F1 input terminals are connect with 380V power supplys；
The A.C. contactor KM is A.C. contactor open in usual；
A phases power cord on the motor protecter KB output terminals is equipped with current transformer TA；
Further include the timer KB1 being correspondingly connected with B, C phase power cord on the motor protecter KB output terminals, the timing
The output terminal of device KB1 is connect with the control signal of motor protecter KB；
Further include control circuit；
Input terminal and the power supply that the control circuit includes a tool change-over switch SA there are two output terminal, change-over switch SA connect
It connects；
Manual controlling brancher, PLC controlling branchers are connected separately on two output terminals of the change-over switch SA；
The manual controlling brancher includes the normally closed type being connected in series with switch SB2, switch SB1 open in usual；
The input terminal of the normally closed type switch SB2 is connect with the first output terminal of change-over switch SA；
The output terminal of the switch SB1 open in usual is connect with the control signal input of the A.C. contactor KM；
The control that the output terminal of the switch SB1 open in usual passes through normally closed type motor protecter KB2 and a normal closing type relay KA1
Signal input part connects；
The PLC controlling branchers include a PLC controller, it is described it is open in usual switch SB1 output terminal also with the PLC controller
One of input terminal connection；
Touching display screen is connected in the PLC controller；
The first output terminal of the change-over switch SA is also connect with one of input terminal in the PLC controller；
The control signal input of the A.C. contactor KM is also connect with one of input terminal in the PLC controller；
Further include protection circuit；
It is relay open in usual that the protection circuit, which includes power transfer relay KA2, the power transfer relay KA2,；
The input terminal of power transfer relay KA2 is connect with power supply, and the output terminal of power transfer relay KA2 passes through circuit breaker Q F2 open in usual
Access is connected and composed with power supply；
Control signal input of the output terminal of the power transfer relay KA2 also with the normal closing type relay KA1 is connect；
The output terminal of the power transfer relay KA2 is also connect with one of input terminal in the PLC controller.
2. the control circuit of motor as described in claim 1, it is characterised in that：It further includes and is connected in switch open in usual in parallel
Run indicator HG1, run indicator HG2 below the output terminal of SB1.
3. the control circuit of motor as described in claim 1, it is characterised in that：It is connected in parallel on the power transfer relay KA2
Faulty lamp HY1, HY2.
4. the control circuit of motor as described in claim 1, it is characterised in that：The input terminal of the change-over switch SA passes through molten
Disconnected device FU2 is connect with power supply.
5. the control circuit of motor as described in claim 1, it is characterised in that：The input terminal of the power transfer relay KA2 leads to
Overcurrent fuse FU1 is connect with power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721774986.3U CN207530733U (en) | 2017-12-19 | 2017-12-19 | The control circuit of motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721774986.3U CN207530733U (en) | 2017-12-19 | 2017-12-19 | The control circuit of motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207530733U true CN207530733U (en) | 2018-06-22 |
Family
ID=62579210
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721774986.3U Active CN207530733U (en) | 2017-12-19 | 2017-12-19 | The control circuit of motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207530733U (en) |
-
2017
- 2017-12-19 CN CN201721774986.3U patent/CN207530733U/en active Active
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