CN110543165A - Electrical control loop fault point assessment system and method based on programmable controller - Google Patents
Electrical control loop fault point assessment system and method based on programmable controller Download PDFInfo
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- CN110543165A CN110543165A CN201910827534.4A CN201910827534A CN110543165A CN 110543165 A CN110543165 A CN 110543165A CN 201910827534 A CN201910827534 A CN 201910827534A CN 110543165 A CN110543165 A CN 110543165A
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- programmable controller
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- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000004891 communication Methods 0.000 claims abstract description 44
- 238000009434 installation Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 abstract description 7
- 230000000007 visual effect Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0259—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the response to fault detection
- G05B23/0262—Confirmation of fault detection, e.g. extra checks to confirm that a failure has indeed occurred
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/24—Pc safety
- G05B2219/24065—Real time diagnostics
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Programmable Controllers (AREA)
Abstract
The invention discloses a fault point assessment system and a fault point assessment method based on an electric control loop of a programmable logic controller, wherein the fault point assessment system consists of a programmable logic controller 1, a practical training platform 2, a communication manager 3, an operating computer 4 and an extension relay 5, wherein the programmable logic controller 1, the extension relay 5 and a power supply 6 are arranged on the back surface of the practical training platform 2; the communication manager 3 and the operation computer 4 are independently installed in a screen combination mode, and the programmable controller 1 and the communication manager 3 communicate by adopting an MODBUS protocol. The fault point assessment system can achieve assessment of open circuit faults and short circuit faults of the control loop, an operation interface is consistent with a schematic diagram, fault setting is visual, operation is simple, the same faults of a plurality of practical training platforms can be set at one time, different fault types and fault points can be set for different practical training platforms, setting is flexible, and time and labor are saved; the training system is used for the examination and training of various training systems.
Description
Technical Field
The invention relates to a fault teaching and assessment system based on an electric control loop of a programmable logic controller and an assessment method thereof.
Background
At present, the existing electric practical training screens or practical training platforms are various in types, systems for electric fault examination are few, buttons and outlet relays are generally matched, the fault point examination systems and the practical training platforms adopt a one-to-one mode, and when the same fault points of the practical training platforms are set, the problems that the fault points of the practical training platforms are inconsistent and the set workload is large are easy to occur.
Disclosure of Invention
the invention aims to provide a programmable controller-based electric control loop fault point assessment system and method, which can realize the functions of setting electric control loop fault points of various electric practical training systems to complete teaching and assessment. The technical scheme of the invention is as follows: the utility model provides a based on programmable controller electric control return circuit fault point examination system comprises programmable controller 1, real standard platform 2, communication supervisor 3, operation computer 4, extension relay 5 and the power 6 that are equipped with test software, and programmable controller 1, extension relay 5 and power 6 install the back at real standard platform 2, and communication supervisor 3 and the independent group screen installation of operation computer 4 that is equipped with test software, the connected mode between each equipment is: the first outlet to the tenth outlet of the programmable controller 1 are respectively connected with the coil of the extension relay 5 in series and then respectively connected to the output end of the power supply 6; the normally closed contact of the extension relay 5 is respectively connected with different contacts of the control loop of the practical training platform 2 in series, and other outlets of the programmable controller 1 are respectively connected with components in the control loop of the practical training platform 2 in parallel; the RS485 interface of the communication manager 3 is connected with the RS485 interface of the programmable controller 1 by adopting a shielded twisted pair, and the communication protocol adopts an MODBUS protocol; the RJ45 interface of the communication manager 3 is connected with the RJ45 interface of the operating computer 4 through a network cable, and the communication protocol adopts TCP/IP protocol communication.
An assessment method of an electrical control loop fault point assessment system based on a programmable controller is as follows: during normal work, the outlet of the programmable controller 1 is normally open, the normally closed contact of the extension relay 5 is closed, the circuit of the practical training platform 2 is in a normal working state, during examination, the outlet of the programmable controller 1 is controlled through the operating computer 4 and the communication manager 3, the outlet of the programmable controller 1 is closed to simulate a short-circuit fault, the outlet of the programmable controller 1 connected with the extension relay 5 is closed, and the normally closed contact is opened to simulate an open-circuit fault after the coil of the extension relay 5 is electrified.
The working principle of the invention is as follows:
As shown in fig. 1, a programmable controller 1, an extension relay 5 and a power supply 6 are installed on a training platform 2, a normally closed contact of the extension relay 5 is connected in series in a control loop as shown in fig. 2, and an outlet of the programmable controller 1 is connected in parallel in the control loop; the programmable controller 1 and the communication manager 3 adopt RS485 interface MODBUS communication protocol for communication, and the communication manager 3 and the operation computer adopt RJ45 interface TCP/IP protocol for communication; during normal training, the outlet of the programmable controller 1 is in an off state, the extension relay 6 is not powered on and does not act, at the moment, the operation of a control loop, the training and other contents can be performed, during examination, the operation computer 4 and the communication management machine 3 are opened, when a fault point is set, the on/off button beside the corresponding fault point number is clicked, as shown in fig. 3, when a short-circuit fault of the fault point 2 is set, the corresponding on button needs to be clicked, at the moment, the contact is closed, when an open-circuit fault of the fault point 9 is set, the corresponding off button needs to be clicked, at the moment, the contact is opened, the setting operation of other fault points is the same, and after the fault point is set, the fault setting of all the training platforms of the fault setting button is clicked once. If different fault points are set on different training platforms, a fault setting picture corresponding to the training platform can be entered, and after the setting is finished, a fault setting button of the picture is clicked to finish the setting. After the examination is completed, only the key point needs to click the 'failure point integral reset' button to complete the exit reset of all the programmable controllers 1, so that all the failure points are reset and restored to the initial state, and the next failure point can be set.
The invention realizes the function of completing teaching and checking by setting the fault point of the electric control loop of various electric practical training systems.
The invention has the technical effects that:
The invention is to realize the function of setting various electric control loop faults so as to carry out teaching and examination. The characteristics are as follows:
1. The fault point assessment system can set different fault points for different training platforms and the same fault point according to requirements, the fault point can be set to be a single fault, various combined faults can be set, and short-circuit faults and open-circuit faults can be selected and are very flexible.
2. A plurality of fault points which are the same with the training platform can be set at one time, the fault setting is accurate, all the fault points can be reset by one key, and time and labor are saved.
3. The fault point is set through computer software, and the operation interface is visual and simple and convenient to set.
Drawings
FIG. 1 is a schematic view of the system of the present invention
FIG. 2 is a schematic diagram of a typical wiring scheme of the present invention
FIG. 3 is a partial interface for fault point setting of the present invention
Detailed Description
As shown in figure 1, the programmable controller-based electric control loop fault point assessment system and the assessment method are composed of a programmable controller 1, a practical training platform 2, a communication manager 3, an operating computer 4 with testing software, an extension relay 5 and a power supply 6, wherein the programmable controller 1, the extension relay 5 and the power supply 6 are installed on the back face of the practical training platform 2, and the communication manager 3 and the operating computer 4 with the testing software are independently installed in a screen assembling mode. The connection mode among each equipment is as follows: the first outlet to the tenth outlet of the programmable controller 1 are respectively connected with the coil of the extension relay 5 in series and then respectively connected to the output end of the power supply 6; the normally closed contact of the extension relay 5 is respectively connected with different contacts of the control loop of the practical training platform 2 in series, and other outlets of the programmable controller 1 are respectively connected with components in the control loop of the practical training platform 2 in parallel; the RS485 interface of the communication manager 3 is connected with the RS485 interface of the programmable controller 1 by adopting a shielded twisted pair, and the communication protocol adopts an MODBUS protocol; the RJ45 interface of the communication manager 3 is connected with the RJ45 interface of the operating computer 4 through a network cable, and the communication protocol adopts TCP/IP protocol communication.
An assessment method of an electrical control loop fault point assessment system based on a programmable controller is as follows: during normal work, the outlet of the programmable controller 1 is normally open, the normally closed contact of the extension relay 5 is closed, the circuit of the practical training platform 2 is in a normal working state, during examination, the outlet of the programmable controller 1 is controlled through the operating computer 4 and the communication manager 3, the outlet of the programmable controller 1 is closed to simulate a short-circuit fault, the outlet of the programmable controller 1 connected with the extension relay 5 is closed, and the normally closed contact is opened to simulate an open-circuit fault after the coil of the extension relay 5 is electrified.
The specific working process is as follows: as shown in fig. 1, a programmable controller 1, an extension relay 5 and a power supply 6 are installed on a training platform 2, and a communication manager 3 and an operating computer 4 with test software are independently installed in a screen assembly mode. The RS485 interface of the communication manager 3 is connected with the RS485 interface of the programmable controller 1 by adopting a shielded twisted pair, and the communication protocol adopts an MODBUS protocol; the RJ45 interface of the communication manager 3 is connected with the RJ45 interface of the operating computer 4 through a network cable, and the communication protocol adopts TCP/IP protocol communication.
before implementation, the number and the type of fault points and the positions of the fault points need to be planned in a schematic diagram, and after the fault points are determined, the connection mode between the devices is as follows: the first outlet to the tenth outlet of the programmable controller 1 are respectively connected with the coil of the extension relay 5 in series and then respectively connected to the output end of the power supply 6; according to a schematic diagram, as shown in fig. 2, a normally closed contact of an extended relay 5 is connected in series in a control loop to simulate an open circuit fault, and an outlet of a programmable controller 1 is connected in parallel in the control loop to simulate a short circuit fault; the programmable controller 1 and the communication manager 3 adopt RS485 interface MODBUS communication protocol for communication, and the communication manager 3 and the operation computer adopt RJ45 interface TCP/IP protocol for communication; as shown in fig. 3, during examination, when a short-circuit fault of a fault point "3" is set, a corresponding "on" button needs to be clicked, at this time, a contact is closed, when an open-circuit fault of a fault point "8" is set, a corresponding "off" button needs to be clicked, at this time, the contact is opened, the setting operation of other fault points is the same as that of the corresponding "on" button, and after the setting of the fault point is completed, the setting of faults of all the training platforms of the "fault setting" button is clicked once. If different fault points are set on different training platforms, a fault setting picture corresponding to the training platform can be entered, and after the setting is finished, a fault setting button of the picture is clicked to finish the setting. During examination, the principle diagram seen by the examined person is the principle diagram without the fault point, and the examined person needs to examine the fault point and clearly write the numbers and the corresponding terminals at the two ends of the fault point in a test paper. After the examination is completed, the "failure point integral reset" button is clicked to complete the exit reset of all the programmable controllers 1, all the failure points are reset and restored to the initial state, and the next failure point can be set.
The working principle and the embodiment of the present invention are explained in detail with reference to the drawings, but the present invention is not limited to the above embodiment; the method can be used for setting the fault points of various different types of training platforms, the open-circuit fault and the short-circuit fault can be selected, the setting interface is consistent with a schematic diagram, the fault points are set visually, and the operation is simple.
Claims (2)
1. A fault point assessment system based on an electric control loop of a programmable controller is characterized in that: by programmable controller (1), real standard platform (2), communication supervisor (3), be equipped with test software operation computer (4), extension relay (5) and power (6) constitute, programmable controller (1), extension relay (5) and power (6) are installed at the back of real standard platform (2), communication supervisor (3) and operation computer (4) independent group screen installation that is equipped with test software, the connected mode between each equipment is: a first outlet to a tenth outlet of the programmable controller (1) are respectively connected with a coil of the extension relay (5) in series and then are respectively connected to an output end of the power supply (6); the normally closed contact of the extended relay (5) is respectively connected with different contacts of a control loop of the practical training platform (2) in series, and other outlets of the programmable controller (1) are respectively connected with components in the control loop of the practical training platform (2) in parallel; the RS485 interface of the communication manager (3) is connected with the RS485 interface of the programmable controller (1) by adopting a shielded twisted pair, and the communication protocol adopts an MODBUS protocol; the RJ45 interface of the communication manager (3) is connected with the RJ45 interface of the operating computer (4) through a network cable, and the communication protocol adopts TCP/IP protocol communication.
2. A method for checking a fault point checking system of an electrical control loop based on a programmable controller is characterized by comprising the following steps: during normal work, the outlet of the programmable controller (1) is normally open, the normally closed contact of the extension relay (5) is closed, the circuit of the practical training platform (2) is in a normal working state, during examination, the outlet of the programmable controller (1) is controlled through the operation computer (4) and the communication manager (3), the outlet of the programmable controller (1) is closed to simulate a short-circuit fault, the outlet of the programmable controller (1) connected with the extension relay (5) is closed, and the normally closed contact of the extension relay (5) is disconnected to simulate an open-circuit fault after a coil is electrified.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910827534.4A CN110543165A (en) | 2019-09-03 | 2019-09-03 | Electrical control loop fault point assessment system and method based on programmable controller |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910827534.4A CN110543165A (en) | 2019-09-03 | 2019-09-03 | Electrical control loop fault point assessment system and method based on programmable controller |
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| CN110543165A true CN110543165A (en) | 2019-12-06 |
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| CN103337210A (en) * | 2013-06-20 | 2013-10-02 | 中山市技师学院 | Three-in-one device with teaching demonstration, practical training and examination functions |
| CN204904704U (en) * | 2015-07-02 | 2015-12-23 | 柳州铁道职业技术学院 | Maintenance electrician's intelligence training checking system based on MCGS interface |
| CN106683516A (en) * | 2017-01-19 | 2017-05-17 | 张旻 | Practical training examination integrated system for electrical circuit faults of machine tools |
| CN107918351A (en) * | 2017-12-12 | 2018-04-17 | 柳州铁道职业技术学院 | A kind of automatic production line work station intelligent training checking system based on PLC |
| CN210377148U (en) * | 2019-09-03 | 2020-04-21 | 威立雅（哈尔滨）热电有限公司 | Electrical control loop fault point checking system based on programmable controller |
-
2019
- 2019-09-03 CN CN201910827534.4A patent/CN110543165A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103337210A (en) * | 2013-06-20 | 2013-10-02 | 中山市技师学院 | Three-in-one device with teaching demonstration, practical training and examination functions |
| CN204904704U (en) * | 2015-07-02 | 2015-12-23 | 柳州铁道职业技术学院 | Maintenance electrician's intelligence training checking system based on MCGS interface |
| CN106683516A (en) * | 2017-01-19 | 2017-05-17 | 张旻 | Practical training examination integrated system for electrical circuit faults of machine tools |
| CN107918351A (en) * | 2017-12-12 | 2018-04-17 | 柳州铁道职业技术学院 | A kind of automatic production line work station intelligent training checking system based on PLC |
| CN210377148U (en) * | 2019-09-03 | 2020-04-21 | 威立雅（哈尔滨）热电有限公司 | Electrical control loop fault point checking system based on programmable controller |
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| 许晓宁;: "网络型机床电气技能实训考核装置的设计与开发", 科技创新与应用, no. 15, 28 May 2013 (2013-05-28), pages 299 * |
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