CN209072383U - A kind of motor inverter control loop - Google Patents
A kind of motor inverter control loop Download PDFInfo
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- CN209072383U CN209072383U CN201821797763.3U CN201821797763U CN209072383U CN 209072383 U CN209072383 U CN 209072383U CN 201821797763 U CN201821797763 U CN 201821797763U CN 209072383 U CN209072383 U CN 209072383U
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Abstract
The utility model discloses a kind of motor inverter control loops, which is characterized in that controls main circuit, transducer control circuit, frequency converter, motor including motor inverter；The three phase mains motor described by the connection of Frequency Converter Control main circuit；The transducer control circuit accesses frequency converter, controls the start and stop of motor；And protect motor and frequency converter；Restart the protective devices such as protector, electric motor protecting monitoring device using fuse disconnecting switch, current transformer, creepage mutual inductor and circuit protection device, motor; realize the protection of frequency converter and motor; while driving part should be used as by changing frequency converter; the usage mode for also acting as protection device, so that the service life of frequency converter and motor is greatly improved.Meanwhile the protection of transducer drive route is additionally provided, so that the protection of frequency converter is more comprehensive.
Description
Technical field
The utility model relates to electric control circuit more particularly to a kind of motor inverter control loops.
Background technique
In existing motor inverter control loop, uses frequency converter as driving part, motor has been adjusted
Speed still seldom adds circuit protection prototype part and the electrical prototype part of electric motor protecting, always with frequency conversion in general circuit
Device also acts as protection device while as driving part, still, during existing technical application, can usually go out
The case where existing motor and frequency converter burn or damage.Therefore, biggish economic loss is caused.
Utility model content
The purpose of this utility model is according in place of above-mentioned the deficiencies in the prior art, and the utility model aim realizes a kind of electricity
Machine Frequency Converter Control circuit, which is characterized in that control main circuit, transducer control circuit, frequency converter, electricity including motor inverter
Machine；The three phase mains motor described by the connection of Frequency Converter Control main circuit；The transducer control circuit accesses frequency converter,
Control the start and stop of motor；And protect motor and frequency converter；
Further, motor inverter control main circuit includes fuse disconnecting switch, current transformer, electric leakage
Mutual inductor；Three phase mains connects the end of incoming cables of fuse disconnecting switch, and the leading-out terminal of fuse disconnecting switch connects frequency conversion
Device；Frequency converter connects motor；It is inserted in the first electric current on three phase mains respectively between fuse disconnecting switch and frequency converter
Mutual inductor, the first creepage mutual inductor, the leading-out terminal of fuse disconnecting switch connect the end of incoming cables of breaker simultaneously, breaker
Leading-out terminal is connected with the end of incoming cables of contactor main contacts；The leading-out terminal of contactor main contacts connects cooling fan；In contactor
It is inserted in the second current transformer, the second electric leakage mutual inductance between the leading-out terminal and cooling fan of first contact on three phase mains respectively
Device.
Further, the transducer control circuit further includes line protective devices, motor restarts protector, motor is protected
Protect monitoring device, contactor；First control power supply connection the first contact of fuse disconnecting switch end of incoming cables, fuse type every
Leave the end of incoming cables for closing leading-out terminal the 4th relay coil of connection of the first contact；The leading-out terminal connection zero of 4th relay coil
Line；The end of incoming cables of first control power supply connection the second contact of fuse disconnecting switch, the second contact of fuse disconnecting switch
Leading-out terminal connection motor restart the end of incoming cables of the first contact of protector, motor restarts the leading-out terminal of the first contact of protector
The first normally-closed contact of frequency converter failure output relay end of incoming cables is connected, the first normally-closed contact of frequency converter failure output relay goes out
The leading-out terminal of the end of incoming cables of line end connection line protective device output contact, line protective devices output contact connects the 6th relay
The end of incoming cables of the first normally opened contact of device, the inlet wire of leading-out terminal connection the first contact of breaker of the 6th the first normally opened contact of relay
End, the end of incoming cables of the leading-out terminal connection stop button of the first contact of breaker, and in parallel start is pressed on the first contact of breaker
Button, the leading-out terminal of stop button connect the end of incoming cables of the first relay coil, and the leading-out terminal of the first relay coil connects zero curve；
The end of incoming cables of leading-out terminal connection the first auxiliary contact of breaker of the second contact of fuse disconnecting switch, breaker first assist
The end of incoming cables of leading-out terminal connection the second contact of breaker of contact；The leading-out terminal connection electric motor protecting monitoring of the second contact of breaker
The end of incoming cables of the first normally-closed contact of device, and parallel-connected induction motors protect the normally opened touching of monitoring device first on the second contact of breaker
Point, the end of incoming cables of the leading-out terminal connection strange land stop button normally-closed contact of the first normally-closed contact of electric motor protecting monitoring device；Strange land
The end of incoming cables of the leading-out terminal connection contactor coil of stop button normally-closed contact, the leading-out terminal of contactor coil connect zero curve；The
The end of incoming cables of one control power supply connection the second normally opened contact of electric motor protecting monitoring device, the normally opened touching of electric motor protecting monitoring device second
The end of incoming cables of the leading-out terminal connection third relay coil of point；The leading-out terminal of third relay coil connects zero curve；First control
Power supply connection motor restarts one end of protector, and motor restarts the other end connection zero curve of protector.
Further, the one of first the first normally opened contact of relay is accessed in the leading-out terminal of enabling signal on the frequency converter
The other end at end, first the first normally opened contact of relay connects 24V power supply；24V power supply connects the first output of the frequency converter
One end of signal, the other end connect the end of incoming cables of the tenth relay coil, and the leading-out terminal of the tenth relay coil connects 0V；24V
Power supply connects one end of the second output signal of the frequency converter, and the other end connects the end of incoming cables of the 12nd relay coil, the
The leading-out terminal of 12 relay coils connects 0V.
The utility model has technical effect that, using fuse disconnecting switch, current transformer, creepage mutual inductor and
Circuit protection device, motor restart the protective devices such as protector, electric motor protecting monitoring device, realize the guarantor of frequency converter and motor
Shield changes frequency converter while should be as driving part, also acts as the usage mode of protection device so that frequency converter and
The service life of motor is greatly improved.Meanwhile the protection of transducer drive route is additionally provided, so that the guarantor of frequency converter
It protects more comprehensive.
Detailed description of the invention
Fig. 1 is the schematic diagram of the motor inverter control main circuit of the utility model.
Fig. 2 is the schematic diagram of the transducer control circuit of the utility model.
Fig. 3 is the elementary diagram of the frequency converter of the utility model.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
It clearly and completely describes, it is clear that described embodiment is only the utility model a part of the embodiment, rather than whole realities
Apply example.Based on the embodiments of the present invention, those of ordinary skill in the art institute without making creative work
The every other embodiment obtained, fall within the protection scope of the utility model.
A kind of motor inverter control loop, including motor inverter control are provided in conjunction with shown in attached drawing 1, in the present embodiment
Main circuit 100 processed, transducer control circuit 200, frequency converter 300, motor M；Three phase mains L1-L3 passes through the main electricity of Frequency Converter Control
Road 100 connects motor M；Transducer control circuit 200 accesses frequency converter 300, controls the start and stop of motor M, and protects 100 He of motor
Frequency converter 300.
It includes fuse disconnecting switch QS, the first current transformer T1, the second electricity that motor inverter, which controls main circuit 100,
Current transformer T2, the first creepage mutual inductor TAN1, the second creepage mutual inductor TAN2；Three phase mains L1-L3 connection fuse type every
The end of incoming cables for closing QS is left, the leading-out terminal of fuse disconnecting switch QS connects frequency converter 300；Frequency converter 300 connects motor M；
Be inserted on three phase mains L1-L3 respectively between fuse disconnecting switch QS and frequency converter 300 first current transformer T1,
The leading-out terminal of first creepage mutual inductor TAN1, fuse disconnecting switch QS connect the end of incoming cables of circuit breaker Q F, breaker simultaneously
The leading-out terminal of QF is connected with the end of incoming cables of contactor main contacts KM；The leading-out terminal of contactor main contacts KM connects cooling fan
M1；The second electric current is inserted on three phase mains L1-L3 respectively between the leading-out terminal and cooling fan M1 of contactor main contacts KM
Mutual inductor T2, the second creepage mutual inductor TAN2.Accessed in above-mentioned main circuit fuse disconnecting switch, current transformer,
Creepage mutual inductor and circuit protection device, motor restart the protective devices such as protector, electric motor protecting monitoring device, can be effective
Ground is directed to the protection of frequency converter and motor, while driving part should be used as by changing frequency converter, also acts as protection device
Usage mode so that the service life of frequency converter and motor is greatly improved.Meanwhile additionally providing transducer drive line
The protection on road, so that the protection of frequency converter is more comprehensive.
In order to realize the protection for frequency converter and motor functionally, need to be connect in transducer control circuit
Enter function contact, the protection for frequency converter and motor is realized with this.
In conjunction with attached drawing 2, providing transducer control circuit 200 in the present embodiment further includes line protective devices FCU, electricity
Machine restarts protector QM, electric motor protecting monitoring device MCU, contactor KM；First control power supply L1 connection fuse type isolation
The leading-out terminal of the end of incoming cables of the first contact of switch QS-1, the first contact of fuse disconnecting switch QS-1 connects the 4th relay
The end of incoming cables of KA4 coil；The leading-out terminal of 4th relay coil KA4 connects zero curve N；First control power supply L1 connection fuse type
The leading-out terminal connection motor of the end of incoming cables of the second contact of disconnecting switch QS-2, the second contact of fuse disconnecting switch QS-2 opens again
The end of incoming cables of dynamic the first contact of protector QM-1, motor restart the leading-out terminal connection frequency converter event of the first contact of protector QM-1
Hinder the end of incoming cables output relay the first normally-closed contact KA12-1, the first normally-closed contact of frequency converter failure output relay KA12-1 goes out
The leading-out terminal of the end of incoming cables of line end connection line protective device output contact FCU-1, line protective devices output contact FCU-1 connects
Connect the end of incoming cables of the 6th the first normally opened contact of relay KA6-1, the leading-out terminal connection of the 6th the first normally opened contact of relay KA6-1
The end of incoming cables of the first contact of breaker KM-1, the end of incoming cables of the leading-out terminal connection stop button SB1 of the first contact of breaker KM-1,
And the leading-out terminal of parallel connection start button SA2, stop button SB1 connect the first relay KA1 on the KM-1 of the first contact of breaker
The leading-out terminal of the end of incoming cables of coil, the first relay KA1 coil connects zero curve N；The second contact of fuse disconnecting switch QS-2
Leading-out terminal connection the first auxiliary contact of breaker QF-1 end of incoming cables, the first auxiliary contact of breaker QF-1 leading-out terminal connection
The end of incoming cables of the second contact of breaker KM-2；The leading-out terminal connection electric motor protecting monitoring device the of the second contact of breaker KM-2
The end of incoming cables of one normally-closed contact MCU-1, and parallel-connected induction motors protection monitoring device first is normally opened on the KM-2 of the second contact of breaker
The leading-out terminal of contact MCU-2, the first normally-closed contact of electric motor protecting monitoring device MCU-1 connect strange land stop button normally-closed contact
The end of incoming cables of SB2；The end of incoming cables of the leading-out terminal connection contactor KM coil of strange land stop button normally-closed contact SB2, contactor KM
The leading-out terminal of coil connects zero curve N；First control power supply L1 connection electric motor protecting the second normally opened contact of monitoring device MCU-3 into
Line end, the end of incoming cables of the leading-out terminal connection third relay KA3 coil of the second normally opened contact of electric motor protecting monitoring device MCU-3；
The leading-out terminal of third relay coil KA3 connects zero curve N；First control power supply L1 connection motor restarts the one of protector QM
End, motor restart the other end connection zero curve N of protector QM.After above-mentioned circuit presses start button SA2, the is connected
One relay KA1 coil starts frequency converter, and transducer drive motor is started to work, while cooling fan is also switched on, and is also started
Work.Due to having accessed line protective devices FCU in transducer control circuit, motor restart protector QM, electric motor protecting
The functions such as monitoring device MCU contact, so at work, frequency converter and motor are restarted in line protective devices FCU, motor
It works under protector QM, electric motor protecting monitoring device MCU protection.Realize the protection for frequency converter and motor.
Relevant defencive function contact has been accessed in above-mentioned transducer control circuit 200, meanwhile, it needs for frequency conversion
The relevant wiring of carry out on device 300, on frequency converter 300 the first relay of leading-out terminal access first of enabling signal DI0 often
One end of contact KA1-1 is opened, the other end of first the first normally opened contact of relay KA1-1 connects 24V power supply；The connection of 24V power supply
One end of first output signal DO0 of frequency converter, the other end connect the end of incoming cables of the tenth relay KA10 coil, the tenth relay
The leading-out terminal of KA10 coil connects 0V；24V power supply connects one end of the second output signal DO1 of frequency converter, and other end connection becomes
The end of incoming cables of frequency device failure output relay coil KA12, the leading-out terminal connection of frequency converter failure output relay KA12 coil
0V。
As the utility model preferred embodiment, it is obvious to a person skilled in the art that the utility model is unlimited
It, can in the details of above-mentioned exemplary embodiment, and without departing substantially from the spirit or essential attributes of the utility model
The utility model and the protection scope of the utility model are realized in other specific forms.Which point therefore, no matter come from
It sees, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the utility model is by appended claims
Rather than above description limits, it is intended that by all changes that come within the meaning and range of equivalency of the claims capsule
It includes in the utility model.Any reference signs in the claims should not be construed as limiting the involved claims.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (3)
1. a kind of motor inverter control loop, which is characterized in that control main circuit, Frequency Converter Control electricity including motor inverter
Road, frequency converter, motor；The three phase mains motor described by the connection of Frequency Converter Control main circuit；The Frequency Converter Control electricity
Frequency converter is accessed on road, controls the start and stop of motor, and protect motor and frequency converter；
The described motor inverter control main circuit includes that fuse disconnecting switch, the first current transformer, the first electric leakage are mutual
Sensor, the second creepage mutual inductor；Three phase mains connects the end of incoming cables of fuse disconnecting switch, and fuse disconnecting switch goes out
Line end connects frequency converter；Frequency converter connects motor；Between fuse disconnecting switch and frequency converter respectively on three phase mains
Be inserted in the first current transformer, the first creepage mutual inductor, the leading-out terminal of fuse disconnecting switch connect simultaneously breaker into
The leading-out terminal of line end, breaker is connected with the end of incoming cables of contactor main contacts；The leading-out terminal of contactor main contacts connects cooling
Fan；The second Current Mutual Inductance is inserted on three phase mains respectively between the leading-out terminal and cooling fan of the first contact of contactor
Device, the second creepage mutual inductor.
2. a kind of motor inverter control loop as described in claim 1, which is characterized in that the transducer control circuit
It further include that line protective devices, motor restart protector, electric motor protecting monitoring device, contactor；First control power supply connection
The leading-out terminal of the end of incoming cables of the first contact of fuse disconnecting switch, the first contact of fuse disconnecting switch connects the 4th relay
The end of incoming cables of device coil；The leading-out terminal of 4th relay coil connects zero curve；First control power supply connection fuse type is kept apart
The end of incoming cables of the second contact is closed, the leading-out terminal connection motor of the second contact of fuse disconnecting switch restarts the touching of protector first
The end of incoming cables of point, motor restart the leading-out terminal connection normally closed touching of frequency converter failure output relay first of the first contact of protector
Point end of incoming cables, the inlet wire of frequency converter failure output relay the first normally-closed contact leading-out terminal connection line protective device output contact
End, the leading-out terminal of line protective devices output contact connect the end of incoming cables of the 6th the first normally opened contact of relay, the 6th relay
The end of incoming cables of leading-out terminal connection the first contact of breaker of first normally opened contact, the leading-out terminal of the first contact of breaker, which connects, to be stopped
The end of incoming cables of button, and the start button in parallel on the first contact of breaker, the leading-out terminal of stop button connect the first relay
The leading-out terminal of the end of incoming cables of coil, the first relay coil connects zero curve；The leading-out terminal of the second contact of fuse disconnecting switch
The end of incoming cables of the first auxiliary contact of breaker is connected, leading-out terminal connection the second contact of breaker of the first auxiliary contact of breaker
End of incoming cables；The end of incoming cables of leading-out terminal connection the first normally-closed contact of electric motor protecting monitoring device of the second contact of breaker, and disconnected
Parallel-connected induction motors protect the first normally opened contact of monitoring device on the second contact of road device, the first normally-closed contact of electric motor protecting monitoring device
The end of incoming cables of leading-out terminal connection strange land stop button normally-closed contact；The leading-out terminal of strange land stop button normally-closed contact connects contactor
The leading-out terminal of the end of incoming cables of coil, contactor coil connects zero curve；First control power supply connects electric motor protecting monitoring device second
The end of incoming cables of normally opened contact, the inlet wire of the leading-out terminal connection third relay coil of the second normally opened contact of electric motor protecting monitoring device
End；The leading-out terminal of third relay coil connects zero curve；First control power supply connection motor restarts one end of protector, motor
Restart the other end connection zero curve of protector.
3. a kind of motor inverter control loop as described in claim 1, which is characterized in that starting on the frequency converter
The leading-out terminal of signal accesses one end of first the first normally opened contact of relay, and the other end of first the first normally opened contact of relay connects
Connect 24V power supply；24V power supply connects one end of the first output signal of the frequency converter, and the other end connects the tenth relay coil
End of incoming cables, the leading-out terminal of the tenth relay coil connects 0V；24V power supply connects the one of the second output signal of the frequency converter
End, the other end connect the end of incoming cables of frequency converter failure output relay coil, the outlet of frequency converter failure output relay coil
End connection 0V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821797763.3U CN209072383U (en) | 2018-11-02 | 2018-11-02 | A kind of motor inverter control loop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821797763.3U CN209072383U (en) | 2018-11-02 | 2018-11-02 | A kind of motor inverter control loop |
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| Publication Number | Publication Date |
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| CN209072383U true CN209072383U (en) | 2019-07-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821797763.3U Active CN209072383U (en) | 2018-11-02 | 2018-11-02 | A kind of motor inverter control loop |
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| CN (1) | CN209072383U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110985431A (en) * | 2019-12-30 | 2020-04-10 | 中国建材国际工程集团有限公司 | Control circuit based on frequency converter communication control fan |
-
2018
- 2018-11-02 CN CN201821797763.3U patent/CN209072383U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110985431A (en) * | 2019-12-30 | 2020-04-10 | 中国建材国际工程集团有限公司 | Control circuit based on frequency converter communication control fan |
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