CN104578711A - Integral special frequency converter for construction lifting machine - Google Patents
Integral special frequency converter for construction lifting machine Download PDFInfo
- Publication number
- CN104578711A CN104578711A CN201410834579.1A CN201410834579A CN104578711A CN 104578711 A CN104578711 A CN 104578711A CN 201410834579 A CN201410834579 A CN 201410834579A CN 104578711 A CN104578711 A CN 104578711A
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- China
- Prior art keywords
- frequency converter
- expansion board
- voltage
- lift
- plc
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- 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.)
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/003—Constructional details, e.g. physical layout, assembly, wiring or busbar connections
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B1/00—Control systems of elevators in general
- B66B1/34—Details, e.g. call counting devices, data transmission from car to control system, devices giving information to the control system
- B66B1/3407—Setting or modification of parameters of the control system
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B1/00—Control systems of elevators in general
- B66B1/34—Details, e.g. call counting devices, data transmission from car to control system, devices giving information to the control system
- B66B1/3415—Control system configuration and the data transmission or communication within the control system
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
- H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
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- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Programmable Controllers (AREA)
Abstract
The invention discloses an integral special frequency converter for a construction lifting machine. The integral special frequency converter comprises a PLC main control board, a host computer, an I/O expansion plate and a main loop, wherein the PLC main control board comprises a DSP processing chip and a programmable logic chip and is used for receiving a plurality of signals through the I/O expansion plate; the host computer is connected with the PLC main control board in a CAN communication mode; the I/O expansion plate is connected with the PLC main control board in the CAN communication mode; the I/O expansion plate comprises functions of multiple on-off input/output interfaces, multiple relay output interfaces, an analog quantity input/output interface, an encode signal input interface and a bus communication interface; the I/O expansion plate is adopted for secondary development, so as to achieve logic control, monitoring and protection on different working situations of a lifting machine; the main loop is in hard-wired connection with the PLC main control board.
Description
Technical field
The present invention relates to frequency converter, particularly relate to a kind of integrated construction lift special converter.
Background technology
In recent years, flourish along with real-estate market, the consumption of building hoist improves year by year, and exploitation building hoist special converter product is well worth doing.The lift special converter that current client uses mainly contains following problem:
1, wiring is many.Frequency converter function and PLC function separately design in traditional building hoist, make the inner cabling of the finished product of the building hoist producer system integration a lot, be unfavorable for automated production, manufacturability is poor.
2, do not have Presentation Function, display needs to configure separately HMI to realize by system integrator, adds fault point and producer's cost.
3, there is no secondary developing platform, use dumb.
Therefore, the research that can improve the building hoist special converter of above demand is very meaningful.
Summary of the invention
The technical problem to be solved in the present invention is the defect cannot carrying out secondary development for frequency converter in prior art, provides a kind of frequency converter carrying out secondary development by PLC, realizes the functions such as each operating mode logic control of building hoist, monitoring and protection act.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of integrated construction lift special converter is provided, comprises:
PLC master control borad, comprise DSP process chip and programmable logic chip, multiple signal is received by I/O expansion board, comprise multi-control source signal, limit switch signal and fault-signal, lift is controlled, comprises band-type brake sequencing control, manual/auto torque magnification, automatic voltage adjustment, zero-speed torque maintenance and voltage ovennodulation;
Host computer, is connected with PLC master control borad by CAN communication mode, for showing the control inerface of lift;
I/O expansion board, is connected with PLC master control borad by CAN communication mode, and this I/O expansion board comprises multi-way switching values input/output interface, multicircuit relay output interface; The input/output interface of analog quantity; Code device signal input interface and bus communication interface function; Carry out secondary development by this I/O expansion board, realize each operating mode logic control to lift, monitoring and protection act;
Major loop, is connected by hardwire with PLC mainboard.
In special converter of the present invention, this frequency converter also comprises keyboard, and described keyboard includes LCD keyboard and LED keyboard.
In special converter of the present invention, described I/O expansion board is debugged separately through debugging software, this special converter is carried out to parameter is browsed, optimum configurations, parameter comparison and parameter upload download, also carries out comprising Chinese and English switchings, function that fast debugging, simulating keyboard, 8 line state variable oscilloscopes are monitored.
In special converter of the present invention, PLC master control borad, also for detecting the output current of frequency converter, when output current exceedes default mistake flow point or reaches frequency converter hardware designs value range, being sent alarm signal, and being shown by host computer.
In special converter of the present invention, PLC master control borad is also for detecting the voltage of the DC bus DC of lift, when this voltage exceedes default pressure point excessively or reaches frequency converter hardware designs overvoltage region, send DC bus overvoltage cue, and shown by host computer; When this voltage is crossed pressure point lower than what preset or when reaching frequency converter hardware designs value range, sends the under-voltage cue of DC bus, and shown by host computer.
The beneficial effect that the present invention produces is: PLC function i ntegration in building hoist special converter, is decreased the interference of system integration wiring by the present invention; By programming to I/O expansion board separately, provide the platform of secondary development to client; I/O expansion board is designed to selectable unit, provides more selection to client; Frequency converter is utilized to carry the function of keyboard, for client provides the information of system cloud gray model.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
Fig. 1 is the structural representation of embodiment of the present invention integrated construction lift special converter;
Fig. 2 is the newly-built parameter list in the free programming process of PLC module integrated in embodiment of the present invention I/O expansion board;
Fig. 3 is the free high-level schematic functional block diagram in the free programming process of PLC module integrated in embodiment of the present invention I/O expansion board;
Fig. 4 is embodiment of the present invention I/O expansion board structured flowchart;
Fig. 5 is the external wiring schematic diagram of embodiment of the present invention IO expansion board;
Fig. 6 is embodiment of the present invention torque magnification schematic diagram.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
The present invention be directed to the frequency converter all-in-one product of a accessible site builtin PLC function that building hoist industry is released.Its design aim is the AC Drive product of high-performance for building hoist industry user provides industrial applicability strong, high reliability, high performance-price ratio, it adopts modularization, open design concept, can meet the comprehensive demand of building hoist sector application flexibly.
PLC function i ntegration in building hoist special converter, is decreased the interference of system integrator's wiring by this invention; By programming to I/O expansion board separately, provide the platform of secondary development to client; I/O expansion board is designed to selectable unit, provides more selection to client; Frequency converter is utilized to carry the function of keyboard, for client provides the information of system cloud gray model.
The integrated construction lift special converter of the embodiment of the present invention, as shown in Figure 1, comprising:
PLC master control borad, it comprises DSP process chip and programmable logic chip, the various signals about lift are received by I/O expansion board, comprise multi-control source signal, limit switch signal and fault-signal etc., by these signals, lift is controlled, comprise band-type brake sequencing control, manual/auto torque magnification, automatic voltage adjustment, zero-speed torque maintenance and voltage ovennodulation;
Host computer, is connected with PLC master control borad by CAN communication mode, for showing the control inerface of lift; Can be debugged frequency converter by this host computer.
I/O expansion board, is connected with PLC master control borad by CAN communication mode, and this I/O expansion board comprises multi-way switching values input/output interface, multicircuit relay output interface; The input/output interface of analog quantity; Code device signal input interface and bus communication interface function; Carry out secondary development by this I/O expansion board, realize each operating mode logic control to lift, monitoring and protection act etc.
When control panel display output current of frequency converter is excessive, then electric current, then carry out checking and getting rid of: the power of motor does not mate with transducer power; Accelerating time is too short; Motor overload or function code P4905.F is set.
When the overvoltage of control panel display DC bus, then flow point crossed by the electric software exceeding producer's optimum configurations of intermediate loop DC, or output current reaches frequency converter hardware designs scope presses through height, the software exceeding producer's optimum configurations is crossed pressure point or is reached frequency converter hardware designs scope.Check and get rid of: static or transient overvoltage occur input side power supply; Deceleration time is too short; Brake unit type selecting is too little; Function code P4906.F is set.
When control panel display is under-voltage, then the DC bus DC loop in major loop is under-voltage, and current busbar voltage lower than the DC bus-bar voltage producer set-point of producer's parameter, or reaches the under-voltage scope of design of hardware.Check and get rid of: input side power supply is too low or main electricity disconnects; Power supply phase shortage; This is under-voltage just to quote in running.
When control panel display input phase failure, then the ripple voltage in DC loop is too high.Check and eliminating: three-phase input supply voltage has one to lose mutually, checks the circuit of each phase of input power; Function code P4901.F is set.
When control panel display translation phase shortage, then the degree of unbalance of three-phase output current is excessive.Check and eliminating: between frequency converter output line and motor input, have one to disconnect mutually, check that frequency converter exports the connection with each phase of motor, or function code P4902.F is set.
When power model overcurrent, then on power amplifier board, testing circuit detection output current of frequency converter is greater than hardware setting threshold values.Check and get rid of: the power of motor does not mate with transducer power; Accelerating time too short or motor overload.
When frequency converter overload, then work/gap period time undesirable or motor power (output) (P0401.M) exceedes the load capacity of frequency converter.
Check and get rid of: the work/gap period time of load exceedes the permissible value of specifying; Motor power (output) (P0401.M) exceedes the load capacity of frequency converter.
The power section of major loop and frequency converter, effect be by the input of power supply by become can regulating frequency export to motor use.Major loop is connected by hardwire with PLC mainboard.
By CAN communication between I/O expansion board and master control borad, decrease wiring, improve the anti-interference of system.
I/O expansion board can be debugged with powerful debugging software DriveInspector separately.
The basic adjustment method of this software is:
This debugging software is integrated with clock pin lock function, is that other debugging software is unexistent.Its specific implementation is:
Elevator production firm can arrange password by stages, and after each password expiration, frequency converter will be limited in lower frequency and run, and prompting leasing company should continue to pay dues.Now, leasing company can apply for continuing to pay dues extension to elevator production firm, and then the password of lower first phase is submitted to leasing company by elevator production firm, and normal use, by after host computer or input through keyboard password, can recover in leasing company.
In producer's parameter group, last parameter is " clock pin lock mark ", when it is 0, can only see parameters such as " lease deadlines " in RTC clock group, under leasing company will be in this pattern; Elevator production firm when it is 1, time and by stages password by stages can be set, under will be in this pattern.
Wherein, the concrete meaning of parameters and using method as follows:
R8540: clock pin lock mark shows current residing state, and 0 represents leasing company's state, and 1 represents elevator production firm state.
P8801.F: clock lock function password is available to elevator production firm use, during input proper password, r8540 puts 1, can show and arrange the value of P8803-P8824; When input password is 0, r8540 sets to 0, and P8803-P8824 is invisible.
P8802.F: report to the police the time limit being used for, time expiry is set before how long carry out continuing to pay dues alarm.
P8803.F: the time of making the product, figure place was 8 for arranging time when dispatching from the factory, as 20140909 represent on September 9th, 2014.Because this function uses RTC clock chip to carry out timing, this function must arrange the time of making the product and could normally use.
P8804.F: lease restriction frequency of utilization when overdue limit frequency has arrived for arranging the subscriber payment time limit but do not continued to pay dues.
P8805.F-P8824.F: ten phase passwords and the expiration time of each phase are set for elevator production firm.
P8825.F: lease password is used for leasing company's input password, if certain first phase in the corresponding ten phase passwords of password of its input, can by the time corresponding for Extension of a charter.
R8826: lease represents the deadline of current first phase deadline.
R8827: lease residue number of days is the number of days according to calculating lease deadline and current time the residue that draws and can normally using.
DriveInspector is the supporting host computer debugging software of Wisdri's independent research frequency converter, can use for complete series frequency converter, convenient and swift.
Allocation of computer needed for running software:
System platform: Windows 2000 (32bit), Windows XP (32bit), WindowsVista (32bit), Windows 7 (32bit).
Internal memory: be no less than 256M
Hard disk free space: be no less than 100M.
CPU: be not less than Pentium III.
Interface: USB, serial ports, CAN.
This debugging software not only can carry out that parameter is browsed, optimum configurations, parameter comparison, parameter upload the conventional func such as download, also there is the functions such as Chinese and English switching, fast debugging, simulating keyboard, 8 line state variable oscilloscope monitoring, for frequency converter debugging brings the experience of feature richness, hommization more.
The free programing function of integrated powerful PLC in I/O expansion board.Comprise multiple logic function block,
When the PLC module of miscellaneous equipment uses, need the debugging software that PLC producer provides special, require higher to the professional standards of operating personnel.And host computer debugging software that frequency converter carries is programmed to use the free programing function of PLC integrated in IO expansion board that me can be utilized to take charge of, simple and convenient, concrete operations are as follows:
1. open free function block graphics edition interface different
Run DriveInspector, select EC750 during newly-built parameter list, as shown in Figure 2.
Similar with Visio, mouse can be used to click, pull and select the mode of frame to select single or multiple free function block, Ctrl/Shift+ mouse can be used to click multiselect/cancellation and to select free function block, mouse can be used to pull the free function block chosen.
Free function block figure as shown in Figure 4.
2. the off-line editing of free function block is different from other software with download
Free function block graphics edition in off-line case uses flow process.
In order to not affect other parameters when downloading, first connect frequency converter and upload parameter.Then when off-line, first edit free function block, edit rear preservation parameter list.Download parameters list is to frequency converter again, the free function block edited can be downloaded to frequency converter.
As: with or, non-, delayer, rest-set flip-flop etc., easily realize the functions such as each operating mode logic control of building hoist, monitoring and protection act; Client can carry out secondary development on this platform.
I/O expansion board is selectable unit, does not have the frequency convertor system of I/O expansion board to work alone, the complete compatibility of realization and previous generation frequency converter.
The function of the HMI that the Simple key board carried with frequency converter replaces client originally to use, for client is cost-saving.
In the embodiment of the present invention, what complete PLC expansion board function is I/O expansion board.I/O expansion board contains multi-way switching values input and output; Multicircuit relay exports; The input and output of analog quantity; Code device signal inputs; Bus communication interface function.
As shown in Figure 4, I/O expansion board is made up of X5, X6, X7, X8, X9, X10, X11, X12.X9 is IO input module; X5-X8 is relay output module; X10 is analog input and output module; X11 is encoder detection module, can detect the speed that motor runs, is controlled and process.X12 is outside Modbus and 24V power supply module, the passage of powering to IO plate for outside and the interface externally carrying out Modbus and communicate.
I/O expansion board is connected by CAN communication with between master control borad.I/O expansion board is by the input signal to outside; the powerful free programing function of PLC is adopted to comprise multiple logic function block; as: with or, non-, delayer, rest-set flip-flop etc., easily realize the functions such as each operating mode logic control of building hoist, monitoring and protection act.
As shown in Figure 5, I/O expansion board can be connected with limit switch by IO input; By Modbus communication connection and the equipment connection such as display and flat bed control; Exported by relay and be connected with motor internal contracting brake; The information such as elevator weight can be detected by analog signals input.
The transmission of the multi-control source signal of user, limit switch signal, fault-signal can be accepted, can be expansion and build more complicated personalized logic control function.
Keyboard has LCD keyboard and the selection of two kinds, LED keyboard.Inner employing ARM embedded OS, can realize optimum configurations, parameter uploads download.By free function block programming realization, to the different parameters that each state assignment is corresponding.
Position connector is an address in upper computer software, by revising this address, corresponding address can be made to point to different places.
Such as: arrange and drive transmission data selection 1 (i.e. P0619.W) to be W0130 (position connector hand-over word 1), be connected into the parameter of " up arrival state is enable ", if the value of corresponding position connector is " 1 ", represents that " up arrival " status condition meets, now panel will show the state code that " up reach " is corresponding.Serial ports is adopted to communicate between keyboard with master control borad.
Be connected into the parameter of " up arrival state is enable ", if the value of corresponding position connector is " 1 ", represents that " up arrival " status condition meets, now panel will show the state code that " up reach " is corresponding.Serial ports is adopted to communicate between keyboard with master control borad.
The realization of torque magnification:
As shown in Figure 6, for VF control characteristic, only can export a low-voltage in low-frequency range, have ignored stator impedance pressure drop, in order to the stator impedance pressure drop of compensate for low frequency section, can think in low-frequency range to the lifting of VF output do, increase starting torque.Turning frequency corresponding to lifting place P1103.F (relative to Rated motor voltage) is 0 frequency, is 0 in the lifting capacity of torque magnification cut-off frequency place (P1102.F) corresponding output voltage.
Should be understood that, for those of ordinary skills, can be improved according to the above description or convert, and all these improve and convert the protection range that all should belong to claims of the present invention.
Claims (5)
1. an integrated construction lift special converter, is connected with lift, it is characterized in that, comprising:
PLC master control borad, comprise DSP process chip and programmable logic chip, multiple signal is received by I/O expansion board, comprise multi-control source signal, limit switch signal and fault-signal, lift is controlled, comprises band-type brake sequencing control, manual/auto torque magnification, automatic voltage adjustment, zero-speed torque maintenance and voltage ovennodulation;
Host computer, is connected with PLC master control borad by CAN communication mode, for showing the control inerface of lift;
I/O expansion board, is connected with PLC master control borad by CAN communication mode, and this I/O expansion board comprises multi-way switching values input/output interface, multicircuit relay output interface; The input/output interface of analog quantity; Code device signal input interface and bus communication interface function; Carry out secondary development by this I/O expansion board, realize each operating mode logic control to lift, monitoring and protection act;
Major loop, is connected by hardwire with PLC mainboard.
2. special converter according to claim 1, is characterized in that, this frequency converter also comprises keyboard, and described keyboard includes LCD keyboard and LED keyboard.
3. special converter according to claim 1, it is characterized in that, described I/O expansion board is debugged separately through debugging software, this special converter is carried out to parameter is browsed, optimum configurations, parameter comparison and parameter upload download, also carries out comprising Chinese and English switchings, function that fast debugging, simulating keyboard, 8 line state variable oscilloscopes are monitored.
4. special converter according to claim 1, it is characterized in that, PLC master control borad also for detecting the output current of frequency converter, when output current exceedes default mistake flow point or reaches frequency converter hardware designs value range, send alarm signal, and shown by host computer.
5. special converter according to claim 1, it is characterized in that, PLC master control borad is also for detecting the voltage of the DC bus DC of lift, when this voltage exceedes default pressure point excessively or reaches frequency converter hardware designs overvoltage region, send DC bus overvoltage cue, and shown by host computer; When this voltage is crossed pressure point lower than what preset or when reaching frequency converter hardware designs value range, sends the under-voltage cue of DC bus, and shown by host computer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410834579.1A CN104578711A (en) | 2014-12-29 | 2014-12-29 | Integral special frequency converter for construction lifting machine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410834579.1A CN104578711A (en) | 2014-12-29 | 2014-12-29 | Integral special frequency converter for construction lifting machine |
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| CN104578711A true CN104578711A (en) | 2015-04-29 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108561318A (en) * | 2017-12-05 | 2018-09-21 | 上海辛格林纳新时达电机有限公司 | A kind of Backpack type all-in-one machine master ＆ slave control system and method |
| CN109761124A (en) * | 2019-01-21 | 2019-05-17 | 广东卓梅尼技术股份有限公司 | A kind of multifunctional lift test macro of customized setting |
| CN113060001A (en) * | 2019-12-31 | 2021-07-02 | 北京新能源汽车股份有限公司 | Motor controller software overvoltage fault processing method and device and electric automobile |
| CN114162688A (en) * | 2021-11-10 | 2022-03-11 | 深圳市英威腾电气股份有限公司 | Control method and control device for construction hoist |
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| CN114162688B (en) * | 2021-11-10 | 2024-02-20 | 深圳市英威腾电气股份有限公司 | Control method and control device for construction elevator |
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Application publication date: 20150429 |
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| RJ01 | Rejection of invention patent application after publication |