CN204474065U - Based on the DC mine elevator current control system of PLC - Google Patents
Based on the DC mine elevator current control system of PLC Download PDFInfo
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- CN204474065U CN204474065U CN201520076597.8U CN201520076597U CN204474065U CN 204474065 U CN204474065 U CN 204474065U CN 201520076597 U CN201520076597 U CN 201520076597U CN 204474065 U CN204474065 U CN 204474065U
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Abstract
The utility model discloses a kind of DC mine elevator current control system based on PLC.Comprise S type curvilinear rows process control module, totally digitilized DC speed regulation module, based on the software module that two PLC redundancy controls.S type curvilinear rows process control module comprises accelerating sections, at the uniform velocity section and braking section.Total digitalization DC speed regulation module comprises main loop module, excitation module and Overvoltage protecting unit.To carry out software control based on two PLC redundancy, using PLC as intermediate link, realize the DC speed regulation of the given smoothness run of S type curve speed and all-digitized demodulator and full-automatic detection control.Decrease the impact that spike electric charge causes electrical network and elevator system, extend the service life of machinery, reduce cost.Simplify the complicated wiring of traditional relay, achieve totally digitilized speed governing and the perfect adaptation steadily promoted, simple to operation, equipment is safe and reliable to operation, is easy to expansion simultaneously and safeguards.
Description
Technical field
The utility model relates to mine hoisting system technical field, is specially a kind of DC mine elevator current control system based on PLC.
Background technology
Coal mining enterprise is as high risk industries, and its safety is closely bound up with the interests of country, enterprise and even each family.Mine hoist is one of important equipment of bargh, and its efficient, safe running is produced can have very important meaning to colliery system, and old friend claims the throat in mine, and status is extremely crucial.
Comparatively complicated as potential energy load for mine hoist power drive, there is startup and the braking of frequent periodization in motor, and its antiport in four quadrants.These mechanical specialitiess are strict with acceleration/accel regulation and control and final parking stall all can not go out least bit mistake.The life safety of downhole production and staff is all closely related with the performance of mine hoist and reliable degree, once there is accident, the production in mine is certain to be affected, and causes personal casualty and device damage, and the economic loss caused is inestimable.This just proposes high requirement to the safety performance of elevator system.
The utility model discloses a kind of DC mine elevator current control system based on PLC, as the nucleus equipment in colliery, this just proposes high requirement to the safety performance of elevator system.The smoothness run of S curve speed preset realized based on two PLC Redundant Control and the DC speed regulation of all-digitized demodulator and full-automatic detection control, ensure that the reliable and stable operation of gig.Be aided with software program code simultaneously and further increase system automation level.Ensure that the safety of mine and the realization of stable production, and have very high using value to the development of electric drive technology subject.
Summary of the invention
The utility model object is to provide a kind of DC mine elevator current control system based on PLC, has solved the difficult problem in prior art reliability and safety.
In order to achieve the above object, technical solution adopted in the utility model is: based on the DC mine elevator current control system of PLC, it is characterized in that comprising: S type curvilinear rows process control module, totally digitilized DC speed regulation module, based on the software module that two PLC redundancy controls.S type curvilinear rows process control module comprises accelerating sections, at the uniform velocity section and braking section.Total digitalization DC speed regulation module comprises main loop module, excitation module and Overvoltage protecting unit.Simultaneously to carry out software control based on two PLC redundancy, using PLC as intermediate link, the smoothness run of S curve speed preset utilizing two PLC Redundant Control to realize and the DC speed regulation of all-digitized demodulator and full-automatic detection control.
The described DC mine elevator current control system based on PLC, is characterized in that comprising: based on S type curve, and acceleration phase adopts actual given, and the mode of decelerating phase employing speed preset, crawling phase is then aided with stroke given algorithm.Adopt two PLC Redundant Control, within each stage, carry out dual speed monitoring and protection, make the safety and stability more of the operation of gig reliable.
The described DC mine elevator current control system based on PLC, it is characterized in that comprising: rectifying device is based on speed and current double closed loop speed governing system, using with the output of Setting signal difference after a series of regulating control as feedback, thus control voltage is with adjusting rotary speed.When the given generation constant rush of current of impact, closed loop feedback signal can make system be tending towards stable state, becomes floating real-time speed regulating system, obtains system performance relatively preferably.
The described DC mine elevator current control system based on PLC, it is characterized in that: the full_digital dc speed regulating device of what speed governing system major loop was selected is DCS8OO series four quadrant running, the capacity of speed regulation device is selected according to the anxious generating capacity of the parameter of electric machine, DC Module (power cabinet) adopts ABB AB DCS8OO-S02-4000-07 (690V, 4000A).Select to input, export and protect components and parts according to power grid environment condition, motor operation characteristic, stroke and command range.Energized circuit excitation module selects ABB AB DCS8OO-S02-0125-04+S199 (400V, 140A) and Overvoltage protecting unit DCFSO6-0140-51.
The described DC mine elevator current control system based on PLC, it is characterized in that comprising: the principle of compositionality of described pair of PLC redundancy control system is that PLC device is overlapped in employing two, wherein a set of is main control computer, another set of is monitoring equipment, two cover PLC independent on-line operation simultaneously, monitors operation each other and communication condition, mutually when main control computer et out of order, monitoring equipment is devoted oneself to work immediately, and Accident prevention occurs further.
The utility model has the advantages that: the utility model has and realizes safe and reliable pulsation-free and promote, and simple to operation, equipment is safe and reliable to operation, is easy to expansion and the plurality of advantages such as maintenance simultaneously.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the utility model system.
Fig. 2 is the constructional drawing of the utility model system.
Detailed description of the invention
Systematic schematic diagram as shown in Figure 1; DC mine elevator current control system based on PLC carries out software control with two PLC redundancy; using PLC as intermediate link; PLC is utilized to realize the given of mine hoist S type curve; within each stage, carry out dual speed monitoring and protection, make the safety and stability more of the operation of gig reliable.Two PLC redundancy control system adopts two cover PLC device, and ownership transfer and condition monitoring are by programming control.Two cover PLC independent on-line operation simultaneously, mutually monitor operation each other and communication condition, once main control computer PLC breaks down, monitoring equipment PLC obtains ownership immediately.Two cover PLC monitor mutually, collaborate.In Direct Current Governor System, a set of PLC is operational protection system, bears the identification of logical action control and fault and the responsibility of process, realizes all-digitized demodulator; Another set of PLC is that travel control system carries out full-automation detection.
System construction drawing as shown in Figure 2, mainly comprises S type curvilinear rows process control module, totally digitilized DC speed regulation module, based on the software module that two PLC redundancy controls.S type curvilinear rows process control module comprises accelerating sections, at the uniform velocity section and braking section.Based on S type curve, acceleration phase adopts actual given, and the mode of decelerating phase employing speed preset, crawling phase is then aided with stroke given algorithm and carries out Comprehensive Control.All-digital dc speed-regulating system main loop design is high-tension switch cabinet → main transformer → lead-in circuit breaker → DC Module (power cabinet) → DC quick switch → mair motor.Select the full_digital dc speed regulating device of DCS8OO series four quadrant running, select the capacity of speed regulation device according to the anxious generating capacity of the parameter of electric machine.The secondary voltage of on-the-spot main transformer is 70OV, and corresponding power cabinet power line voltage grade should select 69OV shelves, and under original system major loop rated load, nominal load, long-time running electric current is 2300A, calculates, should select 4000A gear by the overload magnification of system 1.5 times.Therefore DC Module (power cabinet) adopts ABB AB DCS8OO-S02-4000-07 (690V, 4000A).Select to input, export and protect components and parts according to power grid environment condition, motor operation characteristic, stroke and command range.Energized circuit is designed to low-voltage circuit breaker → excitation transformer → fuse → excitation module → overvoltage protective module → mair motor.Observing and promoting on-the-spot motor excitation voltage/current is IOO V/55A, and excitation is reversible, therefore energized circuit excitation module selects ABB AB DCS8OO-S02-0125-04+S199 (400V, 140A) and Overvoltage protecting unit DCFSO6-0140-51.Simultaneously to carry out software control based on two PLC redundancy, using PLC as intermediate link, one is enclosed within Direct Current Governor System and bears the identification of Logic judgment and fault and the responsibility of process; Another set of PLC completes the Stroke Control of S curve, therefore, it is possible to carry out dual speed monitoring and protection within the decelerating phase, makes the safety and stability more of the operation of gig reliable.Realize level and smooth velocity curve to control, decrease the impact that spike electric charge causes electrical network and elevator system.Two PLC redundancy control system adopts two cover PLC device, and ownership transfer and condition monitoring are by programming control.Two cover PLC independent on-line operation simultaneously, the main control computer PLC control I/O wherein with ownership inputs, exports, and the external control circuit of monitoring equipment PLC and the consistent of main control computer, carry out the acquisition and processing of data, real time data is exported by signal system, shown by signal indicator, but not external output action.Mutually monitor operation each other and communication condition between two cover PLC, once main control computer PLC breaks down, monitoring equipment PLC obtains ownership immediately and devotes oneself to work, and Accident prevention occurs further.Normally run for system running provides motive power and maintain machine simultaneously, add hydraulic braking station and lubricating oil station.And be provided with safety return circuit for security of system reliable operation.
Claims (5)
1. based on the DC mine elevator current control system of PLC, it is characterized in that comprising: S type curvilinear rows process control module, totally digitilized DC speed regulation module, based on the software module that two PLC redundancy controls; S type curvilinear rows process control module comprises accelerating sections, at the uniform velocity section and braking section; Total digitalization DC speed regulation module comprises main loop module, excitation module and Overvoltage protecting unit; Simultaneously to carry out software control based on two PLC redundancy, using PLC as intermediate link, the smoothness run of S curve speed preset utilizing two PLC Redundant Control to realize and the DC speed regulation of all-digitized demodulator and full-automatic detection control.
2. the DC mine elevator current control system based on PLC according to claim 1, is characterized in that: based on S type curve, and acceleration phase adopts actual given, the mode of decelerating phase employing speed preset, and crawling phase is then aided with stroke given algorithm; Adopt two PLC Redundant Control, within the decelerating phase, carry out dual speed monitoring and protection, make the safety and stability more of the operation of gig reliable.
3. the DC mine elevator current control system based on PLC according to claim 1, it is characterized in that: rectifying device is based on speed and current double closed loop speed governing system, using with the output of Setting signal difference after a series of regulating control as feedback, thus control voltage is with adjusting rotary speed; When the given generation constant rush of current of impact, closed loop feedback signal can make system be tending towards stable state, becomes floating real-time speed regulating system, obtains system performance relatively preferably.
4. the DC mine elevator current control system based on PLC according to claim 1, it is characterized in that: speed governing system major loop selects the full_digital dc speed regulating device of DCS8OO series four quadrant running, select the capacity of speed regulation device according to the anxious generating capacity of the parameter of electric machine; Select to input, export and protect components and parts according to power grid environment condition, motor operation characteristic, stroke and command range; Energized circuit excitation module selects ABB AB DCS8OO-S02-0125-04+S199 and Overvoltage protecting unit DCFSO6-0140-51.
5. the DC mine elevator current control system based on PLC according to claim 1, it is characterized in that: the principle of compositionality of described pair of PLC redundancy control system is that PLC device is overlapped in employing two, wherein a set of is main control computer, another set of is monitoring equipment, two cover PLC independent on-line operation simultaneously, monitors operation each other and communication condition, mutually when main control computer et out of order, monitoring equipment is devoted oneself to work immediately, and Accident prevention occurs further.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520076597.8U CN204474065U (en) | 2015-02-03 | 2015-02-03 | Based on the DC mine elevator current control system of PLC |
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| CN201520076597.8U CN204474065U (en) | 2015-02-03 | 2015-02-03 | Based on the DC mine elevator current control system of PLC |
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| CN201520076597.8U Expired - Fee Related CN204474065U (en) | 2015-02-03 | 2015-02-03 | Based on the DC mine elevator current control system of PLC |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109365535A (en) * | 2018-11-20 | 2019-02-22 | 湖北新冶钢特种钢管有限公司 | A kind of push-bench rack gear electrical control protection circuit and its guard method |
| CN112861320A (en) * | 2021-01-13 | 2021-05-28 | 安徽理工大学 | Travel control method for energy-saving operation of elevator |
-
2015
- 2015-02-03 CN CN201520076597.8U patent/CN204474065U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109365535A (en) * | 2018-11-20 | 2019-02-22 | 湖北新冶钢特种钢管有限公司 | A kind of push-bench rack gear electrical control protection circuit and its guard method |
| CN109365535B (en) * | 2018-11-20 | 2024-06-04 | 大冶特殊钢有限公司 | Electrical control protection circuit and protection method for rack of push bench |
| CN112861320A (en) * | 2021-01-13 | 2021-05-28 | 安徽理工大学 | Travel control method for energy-saving operation of elevator |
| CN112861320B (en) * | 2021-01-13 | 2022-08-12 | 安徽理工大学 | Travel control method for energy-saving operation of elevator |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150715 Termination date: 20160203 |
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| CF01 | Termination of patent right due to non-payment of annual fee |