CN2914442Y - Low-tension motor protecting and control device - Google Patents
Low-tension motor protecting and control device Download PDFInfo
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- CN2914442Y CN2914442Y CN 200620014391 CN200620014391U CN2914442Y CN 2914442 Y CN2914442 Y CN 2914442Y CN 200620014391 CN200620014391 CN 200620014391 CN 200620014391 U CN200620014391 U CN 200620014391U CN 2914442 Y CN2914442 Y CN 2914442Y
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- control device
- protection control
- tension motor
- motor protection
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Abstract
The utility model discloses a low-voltage motor protection and control device. The device comprises a microprocessor; a switch power supply portion; a remote signal quantity input portion, a microprocessor reset circuit portion, a sampling circuit portion, a clock circuit portion, a relay output portion, and an analog quantity output circuit portion, which are all connected with the microprocessor; and a switch power supply portion configured to output five groups of voltages and with a switch frequency of 100 KHz. The utility model can protect the motor to be protected comprehensively, and overcomes the disadvantages of electronic motor protector such as unstable protection function. Furthermore, the utility model can achieve parameter measurement, operation control, record management, remote communication and remote control of motors.
Description
Technical field
The utility model relates to a kind of protection control device, especially relates to a kind of low-tension motor protection control device.
Background technology
Now, along with society and development of technology, the application of motor more and more widely, and motor is because operational environment is relatively poor relatively, motor is worth higherly in addition, and the protection and the control of motor is just seemed more and more important.
And in the motor protection technical field, though the thermoelectric device of mechanical type has been eliminated, it utilizes the design of normally-closed contact action realization to motor protection, also continues one of design specification as design electronic type motor protector at present.But the electronic type motor protector, the same existence defencive function insecure inherent shortcoming identical with thermal relay.Particularly when the relay of electronic type motor protector can not adhesive; promptly completely lost defencive function; and motor can start as usual, move this moment; because not protection; after burning, motor knows just that protector damages; be difficult to realize motor is carried out omnibearing protection, so that the loss that causes the accident and be difficult to retrieve.
In addition, existing motor protecting device lacks control and the detection to motor, be difficult to when operation, control, record management are measured, operated to the parameter of motor, let alone telecommunication and Long-distance Control.
Summary of the invention
The purpose of this utility model provides a kind of low-tension motor protection control device, can carry out omnibearing protection to the motor of being protected, and avoids the electronic type motor protector to lose the shortcoming of defencive function easily.Simultaneously, can measure, operate control, record management, telecommunication and Long-distance Control to the parameter of motor.
The purpose of this utility model is achieved in that a kind of low-tension motor protection control device, comprises microprocessor; The Switching Power Supply part is connected with above-mentioned microprocessor,
And, also comprise,
Remote signalling amount importation is connected with above-mentioned microprocessor, is used for the state parameter of input motor;
Last microprocessor reset circuit part is connected with above-mentioned microprocessor, is used for above-mentioned microprocessor and resets;
The sample circuit part is connected with above-mentioned microprocessor, is used for analog quantitys such as electric current, voltage are imported collection;
The clock circuit part is connected with above-mentioned microprocessor, is used for the internal clocking vibration;
Relay output and analogue quantity output circuit part all are connected with above-mentioned microprocessor;
Above-mentioned Switching Power Supply partly is provided with five groups of voltages of output, and switching frequency is set to 100KHz.
Simultaneously,
Above-mentioned a kind of low-tension motor protection control device also comprises the memory circuitry part, is connected with above-mentioned microprocessor, is used for the storage of above-mentioned microprocessor processes data.
Above-mentioned a kind of low-tension motor protection control device also comprises communication module, is connected with above-mentioned microprocessor, is used for data and information transmission.
Above-mentioned a kind of low-tension motor protection control device also comprises artificial importation and display device, is connected with above-mentioned microprocessor by man-machine interface, is respectively applied for the demonstration of manual operation input and information; And RS485 communication interface.
Above-mentioned sample circuit partly is provided with gathers three-phase voltage, three-phase current and one road electric leakage signal.
Preferably, above-mentioned analogue quantity output circuit partly is provided with the employing pulse width modulation mode.
Preferably, above-mentioned clock circuit comprises a M41T81 integrated circuit of clock.
Preferably, above-mentioned memory circuitry partly is set to+FM24CL16 of 3.3V low-voltage power supply, the I2C interface, the write-protected ferroelectric memory of band data of 16KBit.
Preferably, above-mentioned a kind of low-tension motor protection control device also comprises the static RAM of one 8 bytes, is used for the timing calendar function, is controlled by external crystal.
Preferably, above-mentioned relay output comprises at least 4 G5LE-14 relays, and the contact of above-mentioned G5LE-14 relay is set to one often open, one normally closed.
Realize above-mentioned technical scheme, just can realize the purpose of this utility model.Utilization is subjected to the release of the normally opened contact of initiating signal and defencive function circuit control to realize having guaranteed protection to motor the reliability of defencive function, and increased measurement, functions such as operation control, record management and telecommunication to the parameter of electric machine.For the motor in various manual controls or the automatic control system, all can realize effective, omnibearing protection, and not change original mode of operation and control method.Realize protection during to faults such as the motor generation phase failure, overload, short circuit, stall, under-voltage, overvoltage, overheated, ground connection and electric leakages; also having current/voltage shows; time control; the software self diagnosis; incoming call is from recovering; the self-starting order; the fault memory; report to the police from trivial and teletransmission; warn with the code name flicker before and after electric current when showing fault, the voltage failure; configuration RS485 communication interface is realized computer networking, thereby has substituted measuring instruments such as heat in the traditional protection mode continues, auxiliary relay, current transformer, electric current, voltage.Integrate protection, remote measurement, communication, remote control and restart, cost is low, the precision height, Standards Code, easily networking, inner real-time clock (RTC), programmable state is set, automatic fault diagnosis, volume is little, can be on Electric Appliance Cabinet convenient the installation.
Description of drawings
Fig. 1 is a theory diagram of the present utility model;
Fig. 2 is a current sample front-end processing circuit of the present utility model;
Fig. 3 is the utility model analogue quantity output circuit partial circuit figure;
Fig. 4 is the utility model clock circuit partial circuit figure;
Fig. 5 is the utility model relay output circuit diagram;
Fig. 6 is the utility model Switching Power Supply power supply circuit.
Specific embodiment
Describe preferred embodiment of the present utility model in detail below in conjunction with accompanying drawing,, can clearerly find out and understand advantage of the present utility model place by description to the utility model preferred embodiment.
As Fig. 1, the utility model has comprised microcontroller, power unit, 9 tunnel remote signalling amount importations, the MCU reset circuit, electric current, voltage, temperature and analog quantity input Acquisition Circuit, memory circuitry, RTC clock part, the relay output, analog quantity output, asynchronism transceiver communication module, RS485 interface, boundary scan (JTAG) interface and man-machine interface etc. are partly formed.The MSP series 16bit single-chip microcomputer MSP430F149 that the design MCU has selected for use TI company to be produced, the A/D converter ADC of built-in 12 200K; Purpose is to use its abundant interface resource and powerful timer function, and the peripheral hardware expansion only need be done work seldom, and not only design becomes very simple, and this controller volume is little, reliability is high.
As Fig. 2, it is the current sample front-end processing circuit, A, B, C three-phase current are by three current transformers, obtain A, B, C three-phase current and zero sequence current signal through I0, I1, I2, I3 by resistance R 5, R27, R1 30, R127, R12, R9, R137, R138 sampling, handling through the computing amplification filtering send ADC to carry out AC sampling again, this amplifying circuit has two stage gains, is adjusted by analog switch U5, U10, U16, U46.
As Fig. 3, analogue quantity output circuit adopts pulse width modulation mode to carry out differential and integration is converted into analog signal with digital signal.The PWM output, high speed photo coupling, analog switch, integrating circuit, filter amplification circuit, output driving circuit and the rectification circuit that mainly comprise MCU.A+15V and A-15V provide the amplifier power supply respectively after LM78L12 and LM79L12 voltage stabilizing, TL431 provides+and the 5V reference voltage is to the bias voltage of analog switch U45 and amplifier, pwm signal is by optocoupler U29, control analog switch U45 conducting, pwm signal in amplitudes such as 5 pin generations, obtain analog signal through twice integration, realize conversion from the digital to analogy signal.
As Fig. 4, the RTC clock circuit adopts with M41T81 clock IC, it is a built-in 32.768Khz oscillator of low-power consumption serial real-time clock that M41T81 serial access timing keeps SRAM, the SRAM that external crystal is controlled 8 bytes is used for the timing calendar function, has hour minute second 1 10 week date in century and 1100 seconds 28 29 two day leap year of 24 hours BCD forms correction to be provided with automatically up to 2100 all effective 30 and 31 days months; Have divide 1/10th/centisecond second hour century year moon sky date counter, can be used for restarting electric timing of rolling and recording events markers, as shown in Figure 4, U43 external clock crystal oscillator Y5, C4 does the precision fine setting, and U3 is a backup battery, is charged by+3.3 power supplys, D22 plays buffer action, and R16 plays metering function.
As Fig. 5, be the control of starter relay after, the state detection circuit of contactor, wherein D2 is the afterflow diode, the U7 drive IC, D25 is a rectifying tube, by R92, R93, R91 current limliting, C78 filtering, U19 isolates, by SWI4 output contactor state information.The control signal of this circuit contacts device and status signal detect shared two lines.
As Fig. 6, Switching Power Supply adopts Topswitch-II series power supply chip TOP223, the wide pressure input of 85～265VAC/DC, and switching frequency 100KHz Switching Power Supply is exported five groups of voltages, is+12V A+12V, A-12V respectively; Wherein+isolate mutually between 12V and A+12V, A-12V, isolation voltage is 2500V, and all with the isolation of Switching Power Supply importation, voltage also is 2500V.+ 12V provides the driving power of relay; A+12V, A-12V provide AD sampled analog signal power source, wherein A+12V by 78L05 and AS1117-3.3 generation+5V and+the 3.3V power supply ,+5V is to the IC power supply of 5V such as RS485 ,+3.3V is to the IC power supply of 3.3V such as MCU; The DC-DC power supply of+12V by E1215S-1W rub module generation+15V and-the 15V power supply, give analog quantity 4～20mA the power supply of part; The about 5VA of its total power consumption.
Here it is to be noted: those of ordinary skill in the art can make various suitable distortion or replacement on basis of the present utility model, but all these distortion or replacement all should belong to protection range of the present utility model.
Claims (10)
1, a kind of low-tension motor protection control device comprises microprocessor; The Switching Power Supply part is connected with described microprocessor, it is characterized in that also comprising
Remote signalling amount importation is connected with described microprocessor, is used for the state parameter of input motor;
Microprocessor reset circuit part is connected with described microprocessor, is used for described microprocessor and resets;
The sample circuit part is connected with described microprocessor, is used for analog quantitys such as electric current, voltage are imported collection;
The clock circuit part is connected with described microprocessor, is used for the internal clocking vibration;
Relay output and analogue quantity output circuit part all are connected with described microprocessor;
Described Switching Power Supply partly is provided with five groups of voltages of output, and switching frequency is set to 100KHz.
2, a kind of low-tension motor protection control device according to claim 1; it is characterized in that described a kind of low-tension motor protection control device also comprises the memory circuitry part; be connected with described microprocessor, be used for the storage of described microprocessor processes data.
3, a kind of low-tension motor protection control device according to claim 1 and 2 is characterized in that described a kind of low-tension motor protection control device also comprises communication module, is connected with described microprocessor, is used for data and information transmission.
4, a kind of low-tension motor protection control device according to claim 3, it is characterized in that described a kind of low-tension motor protection control device also comprises artificial importation and display device, be connected with described microprocessor by man-machine interface, be respectively applied for manual operation input and information and show; And RS485 communication interface.
5, a kind of low-tension motor protection control device according to claim 1 and 2 is characterized in that described sample circuit partly is provided with collection three-phase voltage, three-phase current and one road electric leakage signal.
6, a kind of low-tension motor protection control device according to claim 1 and 2 is characterized in that described analogue quantity output circuit partly is provided with the employing pulse width modulation mode.
7, a kind of low-tension motor protection control device according to claim 1 is characterized in that described clock circuit comprises a M41T81 integrated circuit of clock.
8, a kind of low-tension motor protection control device according to claim 2 is characterized in that described memory circuitry partly is set to+FM24CL16 of 3.3V low-voltage power supply the I2C interface, the write-protected ferroelectric memory of band data of 16KBit.
9, a kind of low-tension motor protection control device according to claim 1 is characterized in that described a kind of low-tension motor protection control device also comprises the static RAM of one 8 bytes, is used for the timing calendar function, is controlled by external crystal.
10, according to claim 1 or 2 or 7 or 8 or 9 described a kind of low-tension motor protection control device; it is characterized in that described relay output comprises at least 4 G5LE-14 relays, the contact of described G5LE-14 relay is set to one often open, one normally closed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620014391 CN2914442Y (en) | 2006-07-03 | 2006-07-03 | Low-tension motor protecting and control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620014391 CN2914442Y (en) | 2006-07-03 | 2006-07-03 | Low-tension motor protecting and control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2914442Y true CN2914442Y (en) | 2007-06-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620014391 Expired - Fee Related CN2914442Y (en) | 2006-07-03 | 2006-07-03 | Low-tension motor protecting and control device |
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| CN (1) | CN2914442Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103401217A (en) * | 2013-08-07 | 2013-11-20 | 浙江纪元电力自动化科技有限公司 | Intelligent motor protector |
-
2006
- 2006-07-03 CN CN 200620014391 patent/CN2914442Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103401217A (en) * | 2013-08-07 | 2013-11-20 | 浙江纪元电力自动化科技有限公司 | Intelligent motor protector |
| CN103401217B (en) * | 2013-08-07 | 2018-01-09 | 浙江纪元电气科技股份有限公司 | Intelligent motor protector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070620 Termination date: 20150703 |
|
| EXPY | Termination of patent right or utility model |