CN220440371U - Motor protector - Google Patents
Motor protector Download PDFInfo
- Publication number
- CN220440371U CN220440371U CN202321964522.4U CN202321964522U CN220440371U CN 220440371 U CN220440371 U CN 220440371U CN 202321964522 U CN202321964522 U CN 202321964522U CN 220440371 U CN220440371 U CN 220440371U
- Authority
- CN
- China
- Prior art keywords
- power supply
- interface
- microprocessor
- motor protector
- acquisition unit
- 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
- 230000001012 protector Effects 0.000 title claims abstract description 38
- 230000006854 communication Effects 0.000 claims abstract description 19
- 238000004891 communication Methods 0.000 claims abstract description 19
- 238000004458 analytical method Methods 0.000 claims abstract description 13
- 238000005070 sampling Methods 0.000 claims abstract description 12
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 4
- 230000000087 stabilizing effect Effects 0.000 claims description 13
- 239000013078 crystal Substances 0.000 claims description 8
- 230000007175 bidirectional communication Effects 0.000 claims description 3
- 230000035945 sensitivity Effects 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 11
- 230000000694 effects Effects 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Control Of Electric Motors In General (AREA)
Abstract
The utility model relates to a motor protector, which comprises a shell, a display screen, a control panel, an interface component and a main control board, wherein the interface component comprises a sampling interface, a control interface and a power supply interface; the main control board is integrated with a microprocessor, a power supply acquisition unit, a power supply control unit and an internal communication interface, the power supply acquisition unit and the power supply control unit are respectively connected with the input end and the output end of the microprocessor, the internal communication interface is in serial port two-way communication connection with the microprocessor, the upstream end of the power supply acquisition unit is correspondingly connected with an upper terminal of the sampling interface, the downstream end of the power supply control unit is correspondingly connected with an upper terminal of the control interface, and the input terminal and the output terminal of the internal communication interface are respectively connected with the control panel and the display screen. The motor protector monitors the power supply electric energy in real time by the power supply acquisition unit matched with the microprocessor, and rapidly performs shutdown control on the motor side when fault parameters are obtained through analysis, and has the advantages of high sensitivity, small error, high stability and the like.
Description
Technical Field
The utility model relates to the field of electromechanical technology and power supply protection, in particular to a motor protector.
Background
An electric motor is a wide range of power equipment and is a power source for a large number of electromechanical devices. The motor protector is the operation protection equipment of the motor, and gives an alarm and carries out protection control when the motor has faults such as overcurrent, undercurrent, open phase, locked rotor, short circuit, overvoltage, undervoltage, electric leakage, three-phase imbalance, overheat, grounding, bearing abrasion, stator and rotor eccentricity, winding aging and the like. Because of the continuous development of the insulation technology, the motor is required to be lifted and output and reduced in volume, so that the heat capacity of the novel motor is smaller and smaller, the overload capacity of the novel motor is weaker and weaker, and the production automation degree is improved, the motor operation working condition is required to be frequently switched in various modes such as starting braking, forward and reverse rotation, load changing and the like, and therefore, the motor protection technology is required to be higher. The traditional motor protector uses a thermal relay as a main control element, and has the defects of low sensitivity, large error, poor stability and the like, so that the protection effect on the motor is unreliable.
Disclosure of Invention
The utility model aims to solve the technical problems that: the motor protector has the advantages of high sensitivity, small error, high stability and the like, can record and store fault types and specific parameters, and remarkably improves the protection effect of the motor.
The motor protector comprises a display screen, a control panel and an interface component which are arranged outside a shell, and a main control board which is arranged inside the shell, wherein the interface component comprises a sampling interface which is used for being connected with a three-phase power supply bus, a control interface which is used for being connected with a controlled motor controller, and a power supply interface which is used for being connected with a DC5V external power supply; the intelligent control system comprises a main control board, and is characterized in that a microprocessor, a power supply acquisition unit, a power supply control unit and an internal communication interface are integrated on the main control board, the power supply acquisition unit and the power supply control unit are respectively connected with an input end and an output end of the microprocessor, the internal communication interface is in serial port bidirectional communication connection with the microprocessor, the upstream end of the power supply acquisition unit is correspondingly connected with an upper terminal of a sampling interface, the downstream end of the power supply control unit is correspondingly connected with an upper terminal of the control interface, and an input terminal and an output terminal of the internal communication interface are respectively connected with a control panel and a display screen.
Specifically, the microprocessor adopts an STM32F401RCT6 singlechip processor.
Specifically, the power supply acquisition unit comprises an electric energy metering analysis module ATT7022EU, a voltage transformer HPT225A and a current transformer ZEMCT131, wherein the input ends of the voltage transformer HPT225A and the current transformer ZEMCT131 are connected with a sampling interface, and the output ends of the voltage transformer HPT225A and the current transformer ZEMCT131 are connected with a microprocessor through the electric energy metering analysis module ATT7022 EU.
Specifically, the power supply control unit includes three sets of relay circuits and an RS485 module SN65LBC184DR, and the output end of the microprocessor is connected with the three sets of relay circuits and the RS485 module SN65LBC184DR respectively.
Specifically, the internal communication interface adopts 3152EIBZ bidirectional data transceiver.
The motor protector further comprises a crystal oscillator circuit, a clock/storage circuit and a voltage stabilizing module, wherein the crystal oscillator circuit adopts a YSX GA integrated circuit, the clock/storage circuit adopts a PCF8563 clock chip and an FM24Cl64B memory in decibel, the voltage stabilizing module adopts an AMS1117-3.3 voltage stabilizing module, and the input end of the voltage stabilizing circuit is correspondingly connected with an upper terminal of the power supply interface.
The motor protector overcomes the defects of low sensitivity, large error, poor stability and the like of the traditional thermal relay type motor protector, the power supply acquisition unit is matched with the microprocessor to monitor the power supply electric energy in real time, and the motor is rapidly stopped when fault parameters are obtained through analysis, so that the motor protector has the advantages of high sensitivity, small error, high stability and the like, can record and store fault types and specific parameters, and remarkably improves the protection effect of the motor.
Drawings
The utility model relates to a motor protector, which is further described with reference to the accompanying drawings:
FIG. 1 is a schematic plan view of the present motor protector;
FIG. 2 is a block diagram of the logical structure and connection principle of the main control board of the motor protector;
FIG. 3 is a circuit diagram of the microprocessor of the present motor protector;
FIG. 4 is a circuit diagram of the electrical energy metering analysis module of the present motor protector;
FIG. 5 is a circuit diagram of the voltage transformer of the present motor protector;
FIG. 6 is a circuit diagram of the current transformer of the present motor protector;
FIG. 7 is a circuit diagram of the relay circuit of the present motor protector;
FIG. 8 is a circuit diagram of the RS485 module of the motor protector;
FIG. 9 is a circuit diagram of the bi-directional data transceiver of the present motor protector;
FIG. 10 is a circuit diagram of the crystal oscillator circuit of the present motor protector;
FIG. 11 is a circuit diagram of the clock/storage circuit of the present motor protector;
fig. 12 is a circuit diagram of the clock/storage circuit of the present motor protector.
In the figure:
1-shell, 2-display screen, 3-control panel, 4-interface component and 5-main control board;
41-sampling interface, 42-control interface, 43-power supply interface; 51-microprocessor, 52-power supply acquisition unit, 53-power supply control unit, 54-internal communication interface.
Detailed Description
In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In the description of the present utility model, it should be understood that the terms "left", "right", "front", "rear", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
The technical scheme of the present utility model will be further described by the following specific examples, but the scope of the present utility model is not limited to the following examples.
Embodiment 1: as shown in fig. 1 and 2, the motor protector comprises a display screen 2, a control panel 3 and an interface assembly 4 which are arranged outside a machine shell 1, and a main control board 5 which is arranged inside the machine shell 1, wherein the interface assembly 4 comprises a sampling interface 41 for being connected with a three-phase power supply bus, a control interface 42 for being connected with a controlled motor controller, and a power supply interface 43 for being connected with a DC5V external power supply; the main control board 5 is integrated with a microprocessor 51, a power supply acquisition unit 52, a power supply control unit 53 and an internal communication interface 54, the power supply acquisition unit 52 and the power supply control unit 53 are respectively connected with the input end and the output end of the microprocessor 51, the internal communication interface 54 is in serial bidirectional communication connection with the microprocessor 51, the upstream end of the power supply acquisition unit 52 is correspondingly connected with the upper terminal of the sampling interface 41, the downstream end of the power supply control unit 53 is correspondingly connected with the upper terminal of the control interface 42, and the input terminal and the output terminal of the internal communication interface 54 are respectively connected with the control panel 3 and the display screen 2.
Embodiment 2: as shown in fig. 3 to 9, the motor protector includes the microprocessor 51 using STM32F401RCT6 single-chip processor. The power supply collection unit 52 comprises an electric energy metering analysis module ATT7022EU, a voltage transformer HPT225A and a current transformer ZEMCT131, wherein the input ends of the voltage transformer HPT225A and the current transformer ZEMCT131 are connected with the sampling interface 41, and the output ends of the voltage transformer HPT225A and the current transformer ZEMCT131 are connected with the microprocessor 51 through the electric energy metering analysis module ATT7022 EU. The voltage transformer HPT225A and the current transformer ZEMCT131 are used for sensing the voltage and the current of the power supply bus, and the electric energy metering analysis module ATT7022EU is used for analyzing and converting the sensing signals and sending specific digital signals to the microprocessor. The power supply control unit 53 includes three sets of relay circuits and an RS485 module SN65LBC184DR, and the output end of the microprocessor 51 is connected to the three sets of relay circuits and the RS485 module SN65LBC184DR, respectively. The three sets of relay circuits are used for receiving the control instruction of the microprocessor, performing on-off control on the three-phase power supply end of the motor, and the RS485 module SN65LBC184DR is used for carrying out data communication with the motor controller. The internal communication interface 54 employs a 3152EIBZ bi-directional data transceiver. The power supply device is used for being connected with the microprocessor through a serial port, transmitting setting and control instructions from the control panel to the microprocessor, and transmitting power supply parameter data and fault information of the microprocessor to the display. The remaining structures and components are as described in embodiment 1, and a description thereof will not be repeated.
Embodiment 3: as shown in fig. 10 to 12, the motor protector further comprises a crystal oscillator circuit, a clock/storage circuit and a voltage stabilizing module, wherein the crystal oscillator circuit adopts a YSX GA integrated circuit, the clock/storage circuit adopts a PCF8563 clock chip and an FM24Cl64B memory in decibel, the voltage stabilizing module adopts an AMS1117-3.3 voltage stabilizing module, and the input end of the voltage stabilizing circuit is correspondingly connected with the upper terminal of the power supply interface 43. The crystal oscillator circuit and the clock/storage circuit are used as the minimum full-function circuit accessories of the microprocessor, and the voltage stabilizing circuit is used for adjusting the external power supply to DC3.3/5V to supply power for the microprocessor, and the power utilization circuits or modules in other functional units are powered by the microprocessor. The remaining structures and components are as described in embodiment 1, and a description thereof will not be repeated.
When in operation, the method comprises the following steps: the power supply acquisition unit acquires voltage and current signals on a power supply bus, and after power supply electric energy analysis of overload, phase failure, locked rotor, short circuit, overvoltage, undervoltage, electric leakage, three-phase unbalance and the like, the signals are sent to the microprocessor, the microprocessor sends control instructions to the power supply control unit, the power supply control unit controls power supply of the motor end, and after power supply failure judgment, on-off is performed on three-phase power supply of the motor, so that the motor is protected; the internal communication interface is used for connecting the microprocessor with the display screen and the control panel so as to output data such as power supply parameter display and fault alarm, and input control logic setting of the microprocessor aiming at the electric energy analysis and metering result.
The motor protector overcomes the defects of low sensitivity, large error, poor stability and the like of the traditional thermal relay type motor protector, the power supply acquisition unit is matched with the microprocessor to monitor the power supply electric energy in real time, and the motor side is rapidly stopped when fault parameters are obtained through analysis, so that the motor protector has the advantages of high sensitivity, small error, high stability and the like, and meanwhile, the fault type and specific parameters can be recorded and stored, so that the protection effect of the motor is remarkably improved.
The foregoing description illustrates the major features, principles, and advantages of the utility model. It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments or examples, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The foregoing implementations or examples should be regarded as illustrative rather than limiting. The scope of the utility model is indicated by the appended claims rather than by the foregoing description, and all changes that come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (6)
1. A motor protector, characterized by: comprises a display screen (2), a control panel (3) and an interface component (4) which are arranged outside a shell (1), a main control board (5) which is arranged inside the shell (1),
the interface assembly (4) comprises a sampling interface (41) for connecting with a three-phase power supply bus, a control interface (42) for connecting with a controlled motor controller, and a power supply interface (43) for connecting with a DC5V external power supply; the intelligent control system is characterized in that a microprocessor (51), a power supply acquisition unit (52), a power supply control unit (53) and an internal communication interface (54) are integrated on the main control board (5), the power supply acquisition unit (52) and the power supply control unit (53) are respectively connected with the input end and the output end of the microprocessor (51), the internal communication interface (54) is in serial bidirectional communication connection with the microprocessor (51), the upstream end of the power supply acquisition unit (52) is correspondingly connected with an upper terminal of the sampling interface (41), the downstream end of the power supply control unit (53) is correspondingly connected with an upper terminal of the control interface (42), and the input terminal and the output terminal of the internal communication interface (54) are respectively connected with the control panel (3) and the display screen (2).
2. The motor protector according to claim 1, characterized in that: the microprocessor (51) adopts an STM32F401RCT6 singlechip processor.
3. The motor protector according to claim 2, characterized in that: the power supply acquisition unit (52) comprises an electric energy metering analysis module ATT7022EU, a voltage transformer HPT225A and a current transformer ZEMCT131, wherein the input ends of the voltage transformer HPT225A and the current transformer ZEMCT131 are connected with the sampling interface (41), and the output ends of the voltage transformer HPT225A and the current transformer ZEMCT131 are connected with the microprocessor (51) through the electric energy metering analysis module ATT7022 EU.
4. A motor protector according to claim 3, characterized in that: the power supply control unit (53) comprises three groups of relay circuits and an RS485 module SN65LBC184DR, and the output end of the microprocessor (51) is respectively connected with the three groups of relay circuits and the RS485 module SN65LBC184DR.
5. The motor protector according to claim 4, characterized in that: the internal communication interface (54) employs a 3152EIBZ bi-directional data transceiver.
6. The motor protector according to claim 5, characterized in that: the power supply interface (43) further comprises a crystal oscillator circuit, a clock/storage circuit and a voltage stabilizing module, wherein the crystal oscillator circuit adopts a YSX GA integrated circuit, the clock/storage circuit adopts a PCF8563 clock chip and an FM24Cl64B memory in decibel, the voltage stabilizing module adopts an AMS1117-3.3 voltage stabilizing module, and the input end of the voltage stabilizing circuit is correspondingly connected with the upper terminal of the power supply interface (43).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321964522.4U CN220440371U (en) | 2023-07-21 | 2023-07-21 | Motor protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321964522.4U CN220440371U (en) | 2023-07-21 | 2023-07-21 | Motor protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220440371U true CN220440371U (en) | 2024-02-02 |
Family
ID=89689672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321964522.4U Active CN220440371U (en) | 2023-07-21 | 2023-07-21 | Motor protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220440371U (en) |
-
2023
- 2023-07-21 CN CN202321964522.4U patent/CN220440371U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102751719B (en) | Flywheel array energy storage system with flywheel energy storage units connected in parallel | |
| CN102545388B (en) | A kind of Intelligent controller of permanent magnet mechanism breaker | |
| EP3912849A1 (en) | Charging post controller with functional modules connected by means of pcb, and charging post thereof | |
| CN204013276U (en) | A kind of based on numerically controlled bidirectional energy-storage current transformer hardware system | |
| CN220440371U (en) | Motor protector | |
| CN202906572U (en) | Intelligent controller of permanent magnet mechanism breaker | |
| CN203445788U (en) | Power supply apparatus applied to hemodialysis machine | |
| CN207637726U (en) | A kind of external intelligent breaker of electric energy meter | |
| CN215265071U (en) | MODBUS data acquisition device based on NB-IoT | |
| CN201435704Y (en) | Low power-consumption starting thermal protector with connector bar | |
| CN107276416B (en) | Switching power supply device and system | |
| CN202602569U (en) | Soft starting box | |
| CN210092957U (en) | Direct-current power supply device of transformer substation | |
| CN203800580U (en) | Intelligent controller for low voltage breaker | |
| CN203261125U (en) | Self-powered digital relay | |
| CN207200380U (en) | A kind of electric energy efficiency monitoring terminal of modularized design | |
| CN201402969Y (en) | Protection device for synchronous motor | |
| CN2667768Y (en) | Intelligent motor controller | |
| CN215734068U (en) | AC excitation controller for brushless synchronous motor | |
| CN218004100U (en) | Interface device for 5G mobile phone number translator | |
| CN208782330U (en) | A kind of heat dissipation type electrical cabinet of electric automatization control | |
| CN220154523U (en) | Three-phase multifunctional electric energy meter set with primary-secondary design | |
| CN209134115U (en) | A kind of protection formula accumulator | |
| CN217034579U (en) | Integrated control system | |
| CN216699883U (en) | Submersible direct-drive permanent magnet synchronous motor control cabinet |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |