CN204376386U - A kind of intelligent low-pressure electromotor integrated protection device of many communication modes - Google Patents
A kind of intelligent low-pressure electromotor integrated protection device of many communication modes Download PDFInfo
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- CN204376386U CN204376386U CN201420800554.5U CN201420800554U CN204376386U CN 204376386 U CN204376386 U CN 204376386U CN 201420800554 U CN201420800554 U CN 201420800554U CN 204376386 U CN204376386 U CN 204376386U
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Abstract
An intelligent low-pressure electromotor integrated protection device for many communication modes, is made up of display button plate, power panel and CPU board; CPU board, display unit are powered by power panel; described display button plate is made up of display unit and push-button unit; described power panel is made up of power subsystem, signal gathering unit, signal output unit; described CPU board is made up of CPC control unit and communication unit, and this protector has superior network communication, can remote supervisory and control(ling) equipment parameter; long-range parameters; telecommunication, realizes " three is distant " function, convenient and swift.
Description
Technical field
The utility model relates to electronics technology field and electric motor protecting control field, particularly relates to electromotor integrated protection device communication aspect.
Background technology
Along with the development of Industry Control and the development of electronic technology, require more and more higher to the protection of motor, function is also come powerful.The low voltage motor comprehensive protection device of domestic market is more single, function is simple, generally only has the defencive function such as short-circuit protection, overload protection, open-phase protection, rotation-clogging protection, unbalance protection, overvoltage protection, under-voltage protection, overtemperature protection, electric leakage/ground protection; Measurement function is also very single, generally only measures leakage current, three-phase current, three-phase voltage; Communication modes also only has RS-485(Modbus) or Profibus communication in one, dock difficulty with other products, communication inconvenience, be unfavorable for industrial enterprise integrated automatic monitoring system management.In view of the above problems, many communication modes intelligent low-pressure electromotor integrated protection device of the present utility model can solve the problem, and general defencive function adds the defencive functions such as underload protection, underpower protection, external fault protection, communication failure protection; In measurement, add the measurement of active power, reactive power, apparent power, power factor, frequency and electric energy, On-off signal exports can sets itself; Communication aspect; be provided with RS-485(Modbus), the multiple communication modes such as Devicenet, Ethernet; aspect user selects suitable communication modes, can establish one's own system, and forms independent monitor network; also can be combined with other products; incorporate other network, form comprehensively monitoring network, thus better on-line monitoring proterctive equipment and management equipment; and then raising automatization level, improve energy utilization rate.
Utility model content
The purpose of this utility model is the shortcoming and defect overcoming above-mentioned prior art, provides a kind of intelligent low-pressure comprehensive protector of motor of many communication modes.
The purpose of this utility model is realized by following proposal: a kind of intelligent low-pressure electromotor integrated protection device of many communication modes, is made up of display button plate, power panel and CPU board; CPU board, display unit are powered by power panel, described display button plate is made up of display unit and push-button unit, display unit is made up of with mainboard interface circuit and multiple indicator light LCM matrix display, display unit, described power panel is made up of power subsystem, signal gathering unit, signal output unit, and described signal gathering unit comprises switch quantity acquisition circuit, voltage collection circuit, current collection circuit, temperature collection circuit and leakage current Acquisition Circuit; Described signal output unit comprises outputting circuit for relay and 4-20mA output circuit; Described CPU board is made up of CPC control unit and communication unit, and described communicating circuit comprises Modbus communicating circuit, Ethernet communication circuit and Devicenet communicating circuit; LCM matrix display, multiple indicator light group are all connected with CPU control unit with mainboard interface circuit by display unit with push-button unit, signal output unit, signal gathering unit are connected with power subsystem by power panel interface circuit with CPU control unit, and signal output unit, signal gathering unit are connected with CPU control unit with communication unit.
CPU control unit described in the utility model is also connected with clock circuit.
Clock circuit described in the utility model is provided with PCF8563 chip, after 1,2 terminals of PCF8563 chip are connected with crystal oscillator Y1, then by electric capacity C1 filtering ground connection; The empty pin of 3 pin of PCF8563 chip; 4 pin are ground, and 8 pin connect working power+5V, connect two electric capacity C2, C3 and carry out filtering between 4 pin and 8 pin; BT1 is battery, to clock uninterrupted power supply; D1 anode is connected with+5V, and its negative electrode is connected between 4 pin and 8 pin, and the anode of D2 is connected with the positive pole of battery BT1, and its negative electrode is connected between 4 pin and 8 pin, and 5,6 pin of PCF8563 chip are connected with CPU, and is connected with+5V by pull-up resistor R1, R2.
In voltage signal acquisition circuit described in the utility model, Uain, Ubin, Ucin tri-road voltage signal convert small voltage signal to through GPT-262, then amplified by Amplifier OP07, then through amplifier TL084 voltage follow, keep through the sampling of LF398 chip, signal sends into CPU control unit the most at last again.
In temperature collection circuit described in the utility model, the two ends of the indirect external temperature sensor PT of resistance R40 and resistance R44, the 3 pin ground protections of temperature sensor PT; Temperature sensor PT and resistance R40, resistance R41, adjustable resistance R44, resistance R49 form Wheatstone bridge, then signal enters 2,3 pin of Amplifier OP07 through resistance R42, resistance R50, the signal after amplification sends into the PT100-IN end of CPU control unit by 6 pin of Amplifier OP07.
In leakage current Acquisition Circuit described in the utility model, be connected on resistance R98, the two ends of resistance R100 change into voltage signal, then through 2 pin of R47 entering signal amplifier LM258, signal after amplification exports from 1 pin of signal amplifier LM258, then by being connected to 5 pin of signal amplifier LM258 after resistance R43, electric capacity C26 filtering; Access resistance R52 between 1,2 pin of amplifier U24A and form amplifying circuit, short circuit coating-forming voltage follow circuit between 6 pin of amplifier U24B, pin 7, after amplifier U24B outputs signal, through resistance R48, resistance R51 dividing potential drop, again after voltage stabilizing didoe W1, voltage stabilizing didoe W2 bi-directional voltage stabilizing, after exporting I0, connect the I0 end of CPU control unit.
The beneficial effects of the utility model are: this protector has superior network communication, can remote supervisory and control(ling) equipment parameter, long-range parameters, telecommunication, realize " three is distant " function, convenient and swift.Communication network can establish one's own system, and forms independent monitor network, also can be combined with other products; incorporate other network, form comprehensively monitoring network, thus better on-line monitoring proterctive equipment and management equipment; and then raising automatization level, improve energy utilization rate.
Accompanying drawing explanation
Fig. 1 is power unit circuit schematic diagram of the present utility model.
Fig. 2 is LCM lattice display circuit diagram of the present utility model.
Fig. 3 is indicator light circuit schematic diagram of the present utility model.
Fig. 4 is key circuit schematic diagram of the present utility model.
Fig. 5 is display unit of the present utility model and mainboard interface circuit diagram.
Fig. 6 is CPU control unit circuit diagram of the present utility model;
Fig. 7 is clock circuit schematic diagram of the present utility model;
Fig. 8 is the switch quantity acquisition circuit schematic diagram of BY1 of the present utility model;
Fig. 9 is Uain voltage collection circuit schematic diagram of the present utility model;
Figure 10 is Iain current collection circuit schematic diagram of the present utility model;
Figure 11 is temperature collection circuit schematic diagram of the present utility model;
Figure 12 is leakage current Acquisition Circuit schematic diagram of the present utility model;
Figure 13 is the interface circuit schematic diagram of power panel of the present utility model and mainboard;
Figure 14 is BH1 road of the present utility model outputting circuit for relay schematic diagram;
Figure 15 is 4-20mA output circuit schematic diagram of the present utility model;
Figure 16 is Modbus communicating circuit schematic diagram of the present utility model;
Figure 17 is Ethernet communicating circuit schematic diagram of the present utility model;
Figure 18 is DeviceNet communicating circuit schematic diagram of the present utility model;
Figure 19 is circuit board layout schematic diagram schematic diagram of the present utility model;
Figure 20 is schematic block circuit diagram of the present utility model;
Figure 21 is the switch quantity acquisition circuit schematic diagram of BY2 of the present utility model;
Figure 22 is the switch quantity acquisition circuit schematic diagram of BY3 of the present utility model;
Figure 23 is the switch quantity acquisition circuit schematic diagram of BY4 of the present utility model;
Figure 24 is Ubin voltage collection circuit schematic diagram of the present utility model;
Figure 25 is Ucin voltage collection circuit schematic diagram of the present utility model;
Figure 26 is Ibin voltage collection circuit schematic diagram of the present utility model;
Figure 27 is Icin voltage collection circuit schematic diagram of the present utility model;
Figure 28 is BH2 road of the present utility model outputting circuit for relay schematic diagram;
Figure 29 is BH3 road of the present utility model outputting circuit for relay schematic diagram;
Figure 30 is display of the present utility model and push-button unit structural representation;
In figure: 1, display and push-button unit, 2, LED, 3, components and parts, 4, CPU board, 5, power panel, 6, binding post, 7, Modbus communication terminal, 8, Devicenet communication terminal, 9, LCM.
Embodiment
As shown in figure 19, as shown in figure 20, whole device divides three pieces of circuit boards to theory diagram to integrated circuit plate layout plan, i.e. display and keypad, power panel and CPU board.Display and keypad comprise display unit and push-button unit, and power panel comprises power subsystem, signal gathering unit and signal output unit, and CPU board mainly comprises CPU control unit and communication unit.
Display unit, the LCM lattice display image data of one piece of 128*32 and the parameter of setting, 10 LED light display switch amount input/output states, machine operation, plant failure situation, communication condition and communication module operating states etc.
Push-button unit, 4 key controlled comprehensive protection devices, are used for arranging protective device parameter.
Power subsystem, one piece of integrated power module, exportable+5V and ± 12 two kinds of working powers, save space, good stability.
Signal input unit, it comprises switch quantity acquisition circuit, voltage collection circuit, current collection circuit, temperature collection circuit, leakage current Acquisition Circuit.It gathers three-phase current and zero-sequence current by current transformer, gathers three-phase voltage signal, temperature sensing device is accessed Temperature measuring ports by voltage transformer, just can collecting temperature signal, also can gather external switch amount signal simultaneously.
Signal output unit, comprises outputting circuit for relay and 4-20mA output circuit, and relay output interface can self-defining, output port is accessed external secondary circuit, just can control relevant device; 4-20mA output port, variablely send output current signal.
CPU control unit, embedded scm can carry out data processing and computing fast, has jumbo memory cell simultaneously, does not need Memory Extension.High performance processor also better meets communication needs.
Communication unit, is provided with RS-485(Modbus), the various communication interfaces such as Devicenet, Ethernet, open communications protocol, is convenient to the communication modes that each producer selects oneself to be familiar with.According to different work condition environment, select different communication modes, ensure that its communication is unimpeded, avoid interference, thus ensure the reliability of data, ensure that system stability is reliable.
By reference to the accompanying drawings, embodiment of the present utility model is as follows:
Power subsystem, the power supply of 2,3 terminal access AC220V in Fig. 1 power subsystem, 4,5,6 terminals are with regard to the power supply of exportable DC ± 12V, and 7,8 terminals export the power supply of DC+5V, provide power supply to other circuit.
Display unit, the U1 of Fig. 2 is lattice module, is connected with mainboard interface circuit by Fig. 5 display unit with CPU board, and+5V is from power module, and CS, SID, SCLK and CPU connect, and receive the signal that CPU sends over, show corresponding parameter.Fig. 3 is 10 indicator light circuits, and wherein IN1, IN2, IN3, IN4, OUTA, OUTB are monochromatic indicator light, and CM, STATUS, RUN, FAIULT are bi-colour LED.This partial circuit is connected with CPU board by Fig. 5 interface circuit.This partial circuit is common anode polar circuit, and a certain road is set low level by CPU, and indicator light brightens, and sets high level, closes indicator light.10 LED light circuit connect CPU element, the state of display switch amount input and output intuitively, machine operation, plant failure situation, alarm condition, communication condition and communication module operating state.Different color instructions and flashing state, represent different working conditions.
UP, DOWN, OK, FW of Fig. 4 are 4 operational and controlled key buttons, and this partial circuit also accesses CPU board by Fig. 5 interface circuit, operations such as realizing the plus-minus, the confirmation that are shifted up and down, count to menu, reset, return.When some buttons press down, send a low level signal to CPU, CPU judges, and performs corresponding operation; When button is motionless, UP|, DOWN, OK, FW are high level, CPU undo.A small amount of button can meet the execute-in-place needs of device, simple and convenient.
Fig. 6 is control unit cpu circuit, and the signals such as the voltage collected by input unit, electric current, external switch amount and key operation signal carry out corresponding logical operation and mathematical operation, according to operation result, dependent instruction are sent to output unit or display unit.Simultaneously the mode of communication and external equipment can also carry out exchanges data.Fig. 7 is clock circuit, and PCF8563 is clock chip, and 1,2 terminals are connected with crystal oscillator Y1, by electric capacity C1 filtering ground connection; The empty pin of 3 pin; 4 pin are ground, and 8 pin are working power+5V, connect two electric capacity C2, C3 filtering between bipod; BT1 is battery, to clock uninterrupted power supply; D1 anode is connected with+5V, and the anode of D2 is connected with the positive pole of battery, and two diodes prevent battery and+5V reverse mutual from supplying; 5,6 pin are connected with CPU, and are connected with+5V by pull-up resistor R1, R2.This circuit provides reliable and stable clock signal for CPU.
Signal input unit, Fig. 8, Figure 21, Figure 22 and Figure 23 are switching value input circuit, and BY1, BY2, BY3, BY4 external signal enters CPU by TLP281 light-coupled isolation.Fig. 9, Figure 24 and Figure 25 are voltage signal acquisition circuit, Uain, Ubin, Ucin tri-road voltage signal convert small voltage signal to through GPT-262, then amplified by OP07, then through TL084 voltage follow, keep through LF398 sampling, signal sends into CPU control unit the most at last again.Now for Uain, its concrete connection is described.Voltage is added on Uain and EGND, R7 is connected on the primary side of voltage transformer GPT-262, play dividing potential drop effect, the small voltage signal of GPT-262 secondary side is connected on BAV99 bidirectional diode two ends, then with 2 of amplifier U6, 3 are connected, 2 of U2, an indirect negative feedback resistor R1 of 6 forms amplifying circuit, signal after amplification passes through R3, 3 pin of voltage follower TL084 are entered after C1 filtering, 1 of TL084, short circuit coating-forming voltage follow circuit between 2, follow voltage through R4, after R6 divider resistance, again through W1, the voltage stabilizing of W2 bi-directional voltage stabilizing pipe, enter 3 pin of sampling holder LF398 again, after sampling keeps, export from 5 pin, connect the Ua end of CPU, signal is sent into CPU.Figure 10, Figure 26 and Figure 27 are current collection circuit, the course of work same Uain, Ubin, Ucin, and just respective resistances, capacitance parameter are different, but principle and function are all the same.Figure 11 is temperature collection circuit, the two ends of the indirect external temperature sensor PT of R40 and R44, PT-3 ground protection; PT and R40, R41, R44, R49 form Wheatstone bridge, and R4 is adjustable resistance, facilitate circuit to return to zero and calibrate; Faint variations in temperature can make the voltage between R42, R50 change, and then enters 2,3 pin of Amplifier OP07 through R42, R50, and the signal after amplification sends into the PT100-IN end of CPU by 6 pin of OP07.Figure 12 is leakage current Acquisition Circuit, leakage current signal is smaller, it is all generally the small area analysis signal of milliampere level, the two ends being connected on R98, R100 change into voltage signal, then through 2 pin of R47 entering signal amplifier LM258, signal after amplification exports from 1 pin of LM258, then by being connected to 5 pin of LM258 after R43, C26 filtering; Access between 1,2 pin of U24A resistance R52 form amplifying circuit, U24B 6,7 between short circuit coating-forming voltage follow circuit.After U24B output signal, through R48, R51 dividing potential drop, then after W1, W2 bi-directional voltage stabilizing, export I0, connect the I0 end of CPU.
Figure 14, Figure 28 and Figure 29 are outputting circuit for relay, and BH1, BH2, BH3 receive cpu signal, by TLP281 Phototube Coupling, then amplify through 9014 triode signals, drive relay K 1, K2, K3 action.K1, K2 are switching value output circuit OUTA, OUTB, by menu self-defining, such as: the start and stop of controllable device, exportable a certain alarm signal etc.K3 is total alarm output signal of device.
Signal gathering unit, signal output unit and power subsystem, all on one piece of circuit board, are all linked together by Figure 13 power panel interface circuit and CPU control unit.
4-20mA circuit, as shown in figure 15, one end of F-out connects No. 48 terminals of CPU, and CPU controls the output of this terminal, and one end access optocoupler TLP281 carries out light-coupled isolation in addition.The 3 terminating resistor R27 of TLP, and be connected with the positive input 5 of amplifier U30B, output 7 connects the end of triode Q1, and 2 ends of Q1 are connected with 6 ends of U30B, and by R46 ground connection.4 ends of TLP281 connect+12V power supply by R21.3 terminations of Q1 enter 3 terminals of U30A, and 2 ends are connected with 3 ends of Q2, and 1 end of U30A is connected with 1 end of Q2.2 ends of Q2 export one end ground connection of 4-20mA+, R29, and one end is that reference of 4-20mA is negative in addition, i.e. 4-20mA-.4-20mA-accesses 3 ends of amplifier U18 by R31, R33, U18 2,6 indirect R30, formation amplifying circuit, output 6 returns CPU, with, F-out contrasts, and is convenient to the output of control 4-20mA.This circuit contains signal amplification circuit and optical coupling isolation circuit, and the industrial current signal of exportable standard, can show the signals such as electric current, voltage, leakage current, temperature by menu setting.
Figure 16,17,18 is communicating circuit, and whole protective device is provided with RS-485(Modbus), the various communication interfaces such as Devicenet, Ethernet.Be described for RS-485 and Ethernet below.ADM2483 in Figure 16 MODBUS circuit is the enhancement mode RS-485 transceiver of band isolation; the controller that the access of A, B two ends is outside; accessible multiple stage intelligent low-pressure comprehensive protector of motor on A, B two twisted-pair feeders; multiple stage protector is attempted by after on twisted-pair feeder; again bus is accessed external piloting control equipment, carry out transfer of data with it.This communication modes bus can connect at most 31 comprehensive protection devices, and transmission range is 1200 meters.In Ethernet communication circuit, EM32S is the main control chip of this communication modes, carries out serial communication with CPU, and by HR911105A, data is sent to RJ45 mouth, carries out data communication with external equipment.This news connected mode logical, adopts the RJ45 interface of standard, and adopt ModbusTCP communications protocol, a network segment can connect 255 comprehensive protection devices.Be no matter select which kind of communication modes, " remote measurement, remote signalling, remote control " three distant function can be realized on backstage.Open communications protocol, is convenient to the communication modes that each producer selects oneself to be familiar with.According to different work condition environment, select different communication modes, ensure that its communication is unimpeded, thus ensure the reliability of data, ensure that system stability is reliable.Superior network communication, can remote supervisory and control(ling) equipment parameter, and remote parameter is arranged, and telecommunication is convenient and swift.Communication network can establish one's own system, and forms independent monitor network, also can be combined with they products; incorporate other network, form comprehensively monitoring network, thus better on-line monitoring proterctive equipment and management equipment; and then raising automatization level, improve energy utilization rate.
Claims (6)
1. an intelligent low-pressure electromotor integrated protection device for communication modes more than, is characterized in that: be made up of display button plate, power panel and CPU board; CPU board, display unit are powered by power panel, described display button plate is made up of display unit and push-button unit, display unit is made up of with mainboard interface circuit and multiple indicator light LCM matrix display, display unit, described power panel is made up of power subsystem, signal gathering unit, signal output unit, and described signal gathering unit comprises switch quantity acquisition circuit, voltage collection circuit, current collection circuit, temperature collection circuit and leakage current Acquisition Circuit; Described signal output unit comprises outputting circuit for relay and 4-20mA output circuit; Described CPU board is made up of CPC control unit and communication unit, and described communicating circuit comprises Modbus communicating circuit, Ethernet communication circuit and Devicenet communicating circuit; LCM matrix display, multiple indicator light group are all connected with CPU control unit with mainboard interface circuit by display unit with push-button unit, signal output unit, signal gathering unit are connected with power subsystem by power panel interface circuit with CPU control unit, and signal output unit, signal gathering unit are connected with CPU control unit with communication unit.
2. the intelligent low-pressure electromotor integrated protection device of a kind of many communication modes as claimed in claim 1, is characterized in that: described CPU control unit is also connected with clock circuit.
3. the intelligent low-pressure electromotor integrated protection device of a kind of many communication modes as claimed in claim 2, is characterized in that: described clock circuit is provided with PCF8563 chip, after 1,2 terminals of PCF8563 chip are connected with crystal oscillator Y1, then by electric capacity C1 filtering ground connection; The empty pin of 3 pin of PCF8563 chip; 4 pin are ground, and 8 pin connect working power+5V, connect two electric capacity C2, C3 and carry out filtering between 4 pin and 8 pin; BT1 is battery, to clock uninterrupted power supply; D1 anode is connected with+5V, and its negative electrode is connected between 4 pin and 8 pin, and the anode of D2 is connected with the positive pole of battery BT1, and its negative electrode is connected between 4 pin and 8 pin, and 5,6 pin of PCF8563 chip are connected with CPU, and is connected with+5V by pull-up resistor R1, R2.
4. the intelligent low-pressure electromotor integrated protection device of a kind of many communication modes as claimed in claim 1; it is characterized in that: in described voltage signal acquisition circuit; Uain, Ubin, Ucin tri-road voltage signal convert small voltage signal to through GPT-262; then amplified by Amplifier OP07; then through amplifier TL084 voltage follow; keep through the sampling of LF398 chip, signal sends into CPU control unit the most at last again.
5. the intelligent low-pressure electromotor integrated protection device of a kind of many communication modes as claimed in claim 1, it is characterized in that: in described temperature collection circuit, the two ends of the indirect external temperature sensor PT of resistance R40 and resistance R44, the 3 pin ground protections of temperature sensor PT; Temperature sensor PT and resistance R40, resistance R41, adjustable resistance R44, resistance R49 form Wheatstone bridge, then signal enters 2,3 pin of Amplifier OP07 through resistance R42, resistance R50, the signal after amplification sends into the PT100-IN end of CPU control unit by 6 pin of Amplifier OP07.
6. the intelligent low-pressure electromotor integrated protection device of a kind of many communication modes as claimed in claim 1, it is characterized in that: in described leakage current Acquisition Circuit, be connected on resistance R98, the two ends of resistance R100 change into voltage signal, then through 2 pin of R47 entering signal amplifier LM258, signal after amplification exports from 1 pin of signal amplifier LM258, then by being connected to 5 pin of signal amplifier LM258 after resistance R43, electric capacity C26 filtering; Access resistance R52 between 1,2 pin of amplifier U24A and form amplifying circuit, short circuit coating-forming voltage follow circuit between 6 pin of amplifier U24B, pin 7, after amplifier U24B outputs signal, through resistance R48, resistance R51 dividing potential drop, again after voltage stabilizing didoe W1, voltage stabilizing didoe W2 bi-directional voltage stabilizing, after exporting I0, connect the I0 end of CPU control unit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420800554.5U CN204376386U (en) | 2014-12-18 | 2014-12-18 | A kind of intelligent low-pressure electromotor integrated protection device of many communication modes |
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| CN201420800554.5U CN204376386U (en) | 2014-12-18 | 2014-12-18 | A kind of intelligent low-pressure electromotor integrated protection device of many communication modes |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104518482A (en) * | 2014-12-18 | 2015-04-15 | 平顶山中选自控系统有限公司 | Intelligent comprehensive protective device with multiple communication modes for low-voltage motors |
| CN107658849A (en) * | 2017-07-18 | 2018-02-02 | 北京电联港电器设备有限责任公司 | Intelligent low-pressure comprehensive safety protection device |
-
2014
- 2014-12-18 CN CN201420800554.5U patent/CN204376386U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104518482A (en) * | 2014-12-18 | 2015-04-15 | 平顶山中选自控系统有限公司 | Intelligent comprehensive protective device with multiple communication modes for low-voltage motors |
| CN107658849A (en) * | 2017-07-18 | 2018-02-02 | 北京电联港电器设备有限责任公司 | Intelligent low-pressure comprehensive safety protection device |
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