CN102491141B - Programmable logic controller (PLC) redundancy control device for alternating current variable-frequency hoister - Google Patents
Programmable logic controller (PLC) redundancy control device for alternating current variable-frequency hoister Download PDFInfo
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- CN102491141B CN102491141B CN2011103597260A CN201110359726A CN102491141B CN 102491141 B CN102491141 B CN 102491141B CN 2011103597260 A CN2011103597260 A CN 2011103597260A CN 201110359726 A CN201110359726 A CN 201110359726A CN 102491141 B CN102491141 B CN 102491141B
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Abstract
The invention relates to a programmable logic controller (PLC) redundancy control device for an alternating current variable-frequency hoister. The PLC redundancy control device adopts two sets of identical PLCs and modules of the PLCs. All digital quantity input signals of the hoister are simultaneously sent into two data collection modules, all analog quantity input signals of the hoister are isolated, amplified and distributed by an analog signal isolation module, the identical analog quantity input signals are respectively sent to the two data collection modules, the digital quantity input signals and the analog quantity input signals collected by the two data collection modules are respectively sent into the two PLCs, the two PLCs, a man-computer interface and a communication module are connected, the two PLCs respectively output hoister control signals and hoister analog speed regulation signals through two data output modules, the hoister control signals output by the two data output modules are simultaneously used for controlling variable-frequency speed regulators, and through comparison, the analog speed regulation signals with low speed in the hoister analog speed regulation signals output by the two data output modules are used for controlling the speed of the variable-frequency speed regulators.
Description
Technical field
The present invention relates to a kind of control setup of AC frequency conversion gig, relate in particular to a kind of AC frequency conversion gig PLC redundancy control apparatus.
Background technology
It is the technology of comparative maturity that colliery ac elevator using PLC is controlled, wherein control method mainly contains two kinds, a kind of method is to realize speed control by changing ac elevator motor rotor electric current, and another method is to change ac elevator electric electromechanics source frequency by frequency converter to realize speed control.
Application Programmable Logic Controller PLC realizes the control of AC frequency conversion gig, is reliable, stable, widely used control method; Part AC frequency conversion hoister control, although also adopted two PLC to control at present, is not all the Redundant Control of real meaning.Part AC frequency conversion gig PLC control setup adopts a PLC master control, and another PLC monitors, when monitoring that PLC detects the main control PLC fault, monitors that PLC reports to the police or stops gig work.Part AC frequency conversion gig PLC control setup adopts a PLC master control, another PLC monitoring, and monitoring PLC plays the part protective effect of main control PLC; only when dangerous working condition appears in gig; protect, stop gig work, be equivalent to the back-up protection of main control PLC.
The above AC frequency conversion control device of hoister, comprise the control setup that adopts two PLC, all have two weak points: one, the collection of monitoring plc data is not comprehensive, the operational factor of a collecting part particular importance, monitoring PLC does not control function completely, can not realize Redundant Control, when the main control PLC fault, elevator system quits work, can not realize continuous operation, even maintenance, also must change main control PLC or its malfunctioning module, elevator system just can be reworked.Two, the deceleration of elevator system is unreliable; what adopt due to the automatic retarding of AC frequency conversion control device of hoister is the position principle; namely to certain position just slow down; so; if being used for speed measuring module or the rate control module of position probing, main control PLC breaks down; gig just can not normally slow down, and just there will be and overruns, and causes overspeed protection.Monitoring PLC does not have the speed adjusting control function, is only overrunning and other play the back-up protection effect while jeopardizing the safe operation operating mode.
Summary of the invention
The purpose of this invention is to provide a kind of AC frequency conversion gig PLC redundancy control apparatus that adopts the two identical PLC of cover and module thereof.
for achieving the above object, the technical solution used in the present invention is: a kind of AC frequency conversion gig PLC redundancy control apparatus, it is characterized in that: the whole digital quantity incoming signals of gig are sent into 1# data acquisition module and 2# data acquisition module simultaneously, the whole analog input signals of gig are isolated through the analog signal isolation module, amplify, distribute, send into respectively identical analog input signal to 1# data acquisition module and 2# data acquisition module, digital quantity incoming signal and the analog input signal of 1# data collecting module collected are sent into the 1#PLC controller, digital quantity incoming signal and the analog input signal of 2# data collecting module collected are sent into the 2#PLC controller, the 1#PLC controller, the 2#PLC controller, man-machine interface is connected with communication module, mutually by communication module communication and swap data, the 1#PLC controller is by 1# data outputting module output hoister control signal and gig simulation speed-regulating signal, the 2#PLC controller is by 2# data outputting module output hoister control signal and gig simulation speed-regulating signal, the hoister control signal of the hoister control signal of 1# data outputting module output and the output of 2# data outputting module is controlled the operation of RHVC simultaneously, stop, braking, rotate and reverse, the gig simulation speed-regulating signal of the gig simulation speed-regulating signal of 1# data outputting module output and the output of 2# data outputting module compares by the analog signal comparison module, the simulation speed-regulating signal that speed is little is controlled the speed of RHVC, thereby while guaranteeing any independent PLC hardware and software failure, when need to slowing down, gig reliably slows down, RHVC is directly controlled the operation of winder motor, stop, braking, main story, counter-rotating and running velocity.
Advantageous effect of the present invention is: because AC frequency conversion gig PLC redundancy control apparatus of the present invention adopts the two identical PLC of cover and modules thereof, two cover PLC possess identical to the AC frequency conversion gig simultaneously control function, when a cover PLC breaks down, the automatic get out of hand authority of fault PLC, and by another set of PLC, realize reporting to the police.Not only elevator system can not shut down because of a cover PLC fault.And, because rate control module is also redundancy, the speed of system is controlled and is adopted the low speed priority principle, can when slowing down, needs reliably slow down, solved the insecure problem of former control setup deceleration, realize two PLC Redundant Control truly, AC frequency conversion gig PLC redundancy control apparatus adopts the selfdiagnosis of software and hardware and the redundancy of hardware to realize two PLC Redundant Control, and result of use is good.
Description of drawings
Fig. 1 is composition schematic diagram of the present invention.
The specific embodiment
The invention will be further described below in conjunction with the drawings and specific embodiments:
As shown in Figure 1, AC frequency conversion gig PLC redundancy control apparatus is by the 1# data acquisition module in the present invention, the 1#PLC controller, the 1# data outputting module, RHVC, winder motor, analog signal isolation module, man-machine interface, communication module, analog signal comparison module, 2# data acquisition module, the 2#PLC controller, the formations such as 2# data outputting module.
The whole digital quantity incoming signals of gig are sent into 1# data acquisition module and 2# data acquisition module simultaneously.
The whole analog input signals of gig, through the isolation of analog signal isolation module, amplification, distribution, are sent into respectively identical analog input signal to 1# data acquisition module and 2# data acquisition module.
Digital quantity incoming signal and the analog input signal of 1# data collecting module collected are sent into the 1#PLC controller, and digital quantity incoming signal and the analog input signal of 2# data collecting module collected are sent into the 2#PLC controller.
1#PLC controller, 2#PLC controller, man-machine interface are connected with communication module, mutually by communication module communication and swap data.
The 1#PLC controller is by 1# data outputting module output hoister control signal and gig simulation speed-regulating signal, and the 2#PLC controller is by 2# data outputting module output hoister control signal and gig simulation speed-regulating signal.
The hoister control signal of the hoister control signal of 1# data outputting module output and the output of 2# data outputting module control simultaneously RHVC operation, stop, braking, rotate and reverse.Thereby while guaranteeing any independent PLC hardware and software failure, the reliable and secure control of gig.
The gig simulation speed-regulating signal of the gig simulation speed-regulating signal of 1# data outputting module output and the output of 2# data outputting module compares by the analog signal comparison module, the simulation speed-regulating signal that speed is little is controlled the speed of RHVC, thereby while guaranteeing any independent PLC hardware and software failure, when need to slowing down, gig reliably slows down.
RHVC directly control winder motor operation, stop, braking, main story, counter-rotating and running velocity (power frequency).
AC frequency conversion gig PLC redundancy control apparatus has increased the data acquisition module of redundancy, adopts the analog signal isolation module, and identical two paths of signals is isolated, is assigned as to analog signal for two cover plc data acquisition module collections.Two cover PLC gather identical gig operating data simultaneously, because the object that gathers is consistent, data acquisition module separately independent, do not interfere with each other, so, when any cover PLC or its module failure, another set of PLC has complete failure-free gig operating data, to realize control fully.
AC frequency conversion gig PLC redundancy control apparatus has increased the data outputting module of redundancy, two cover PLC by data outputting module (digital output, analog output) separately control simultaneously gig startup, stop, acceleration, constant speed move, slow down, creep, braking and emergency braking.While guaranteeing any independent cover PLC or its module failure, another set of PLC has complete failure-free and controls function.
AC frequency conversion gig PLC redundancy control apparatus has increased the software and hardware self-diagnostic function of PLC fault.During one cover PLC faults itself, the get out of hand function, controlled by another set of PLC automatically.Simultaneously, an intact cover PLC detects the running condition of another set of PLC automatically by the method for software and hardware, automatically send fault alarm, and deprive the control authority of fault PLC.
AC frequency conversion gig PLC redundancy control apparatus has increased the analog signal comparison module that speed is controlled, namely adopt the preferential principle of low speed, compare by the speed controlling and adjusted signal of analog signal comparison module to two cover PLC outputs, the analog signal that speed is low preferentially controls to adjust, slow down when wrong when software or hardware appear in a cover PLC, another set of PLC guarantees that elevator system reliably slows down.
AC frequency conversion gig PLC redundancy control apparatus software is by communication, and relatively the measured error of the important parameter of two cover PLC within the range of permission.When error exceeds certain limit and may cause synchro control contradiction, remind operating personal to confirm to select correct measurement parameter, after confirmation, system is automatically by confirming numerical value correction accumulated error.Guarantee the synchronous of two cover PLC Redundant Control.
AC frequency conversion gig PLC redundancy control apparatus has been realized two PLC Redundant Control of AC frequency conversion gig, when an independent cover PLC or its module break down arbitrarily, and the continuous reliability service of elevator system.When speed detection, rate control module or the software of an independent PLC of cover occurred that speed is controlled fault, elevator system can reliably be slowed down.
AC frequency conversion gig PLC redundancy control apparatus is used for the design of new AC frequency conversion hoister control system.The technical innovation project that also can be used for the AC frequency conversion hoister control that has dropped into.The only PLC by increasing redundancy section, PLC module, speed comparison module, communication module etc., and the software of modification original system, can make the AC frequency conversion gig PLC control setup that has dropped into into redundancy control apparatus, the property indices such as the reliability of the former control system of raising, safety.
This AC frequency conversion gig PLC redundancy control apparatus has been implemented technical innovation project on colliery, east, Huainan City, Anhui Province main shaft AC frequency conversion gig and the beautiful colliery of brocade, Xinmi City, Henan Province auxiliary shaft AC frequency conversion gig.Debug phase, in the operating modes such as the single cover of production scene simulation PLC fault, module failure, elevator system normal and continuous operation.The speed of simulating single PLC detects and the rate control module fault, promotes function and reliably slows down.Now, this two covers control setup normal operation is reliable.
Claims (1)
1. AC frequency conversion gig PLC redundancy control apparatus, it is characterized in that: the whole digital quantity incoming signals of gig are sent into 1# data acquisition module and 2# data acquisition module simultaneously, the whole analog input signals of gig are isolated through the analog signal isolation module, amplify, distribute, send into respectively identical analog input signal to 1# data acquisition module and 2# data acquisition module, digital quantity incoming signal and the analog input signal of 1# data collecting module collected are sent into the 1#PLC controller, digital quantity incoming signal and the analog input signal of 2# data collecting module collected are sent into the 2#PLC controller, the 1#PLC controller, the 2#PLC controller, man-machine interface is connected with communication module, mutually by communication module communication and swap data, the 1#PLC controller is by 1# data outputting module output hoister control signal and gig simulation speed-regulating signal, the 2#PLC controller is by 2# data outputting module output hoister control signal and gig simulation speed-regulating signal, the hoister control signal of the hoister control signal of 1# data outputting module output and the output of 2# data outputting module is controlled the operation of RHVC simultaneously, stop, braking, rotate and reverse, the gig simulation speed-regulating signal of the gig simulation speed-regulating signal of 1# data outputting module output and the output of 2# data outputting module compares by the analog signal comparison module, the simulation speed-regulating signal that speed is little is controlled the speed of RHVC, thereby while guaranteeing any independent PLC hardware and software failure, when need to slowing down, gig reliably slows down, RHVC is directly controlled the operation of winder motor, stop, braking, main story, counter-rotating and running velocity.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011103597260A CN102491141B (en) | 2011-11-08 | 2011-11-08 | Programmable logic controller (PLC) redundancy control device for alternating current variable-frequency hoister |
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| CN2011103597260A CN102491141B (en) | 2011-11-08 | 2011-11-08 | Programmable logic controller (PLC) redundancy control device for alternating current variable-frequency hoister |
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| CN102491141A CN102491141A (en) | 2012-06-13 |
| CN102491141B true CN102491141B (en) | 2013-11-20 |
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| CN2011103597260A Expired - Fee Related CN102491141B (en) | 2011-11-08 | 2011-11-08 | Programmable logic controller (PLC) redundancy control device for alternating current variable-frequency hoister |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110442114A (en) * | 2019-08-13 | 2019-11-12 | 中国核动力研究设计院 | A kind of analog quantity isolation assignment channel hardware diagnostic device and diagnostic method |
| CN114115091B (en) * | 2021-01-12 | 2024-05-17 | 无锡信捷电气股份有限公司 | PLC data redundancy method based on time synchronization and finite data element interaction |
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| CN1029828C (en) * | 1991-09-20 | 1995-09-27 | 三菱电机株式会社 | Controlling apparatus for elevator |
| CN201362531Y (en) * | 2009-03-16 | 2009-12-16 | 湖北江汉建筑工程机械有限公司 | Intelligent lifter control device |
| CN201530644U (en) * | 2009-10-29 | 2010-07-21 | 程栓柱 | All-digital frequency converting electric control system of mine hoister |
| CN201737546U (en) * | 2010-06-30 | 2011-02-09 | 中国建筑科学研究院建筑机械化研究分院 | Safety protection and running state monitoring device for construction hoist |
| CN201850015U (en) * | 2010-07-14 | 2011-06-01 | 湖南金塔机械制造有限公司 | Electric control system based on IPC (industrial personal computer) for mine elevator |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2424179Y (en) * | 2000-01-31 | 2001-03-21 | 焦作华飞电子电器工业有限公司 | Master control table for a.c. elevator |
| CN1418804A (en) * | 2002-12-13 | 2003-05-21 | 烟台惠丰电子有限公司 | Variable frequency control method for winding engine, and its control system therefor |
| CN2585844Y (en) * | 2002-12-13 | 2003-11-12 | 烟台惠丰电子有限公司 | Frequency conversion controller of jenny |
| PL1638880T5 (en) * | 2003-06-30 | 2013-12-31 | Inventio Ag | Safety system for an elevator structure |
| CN201233527Y (en) * | 2008-07-17 | 2009-05-06 | 焦作华飞电子电器股份有限公司 | Hoister control device |
| CN202321855U (en) * | 2011-11-08 | 2012-07-11 | 山东科邦自动化工程有限公司 | Programmable logic controller (PLC) redundancy control device of alternating-current variable frequency hoister |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1029828C (en) * | 1991-09-20 | 1995-09-27 | 三菱电机株式会社 | Controlling apparatus for elevator |
| CN201362531Y (en) * | 2009-03-16 | 2009-12-16 | 湖北江汉建筑工程机械有限公司 | Intelligent lifter control device |
| CN201530644U (en) * | 2009-10-29 | 2010-07-21 | 程栓柱 | All-digital frequency converting electric control system of mine hoister |
| CN201737546U (en) * | 2010-06-30 | 2011-02-09 | 中国建筑科学研究院建筑机械化研究分院 | Safety protection and running state monitoring device for construction hoist |
| CN201850015U (en) * | 2010-07-14 | 2011-06-01 | 湖南金塔机械制造有限公司 | Electric control system based on IPC (industrial personal computer) for mine elevator |
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| CN102491141A (en) | 2012-06-13 |
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