CN204705701U - Relay automatic tester - Google Patents
Relay automatic tester Download PDFInfo
- Publication number
- CN204705701U CN204705701U CN201520315796.XU CN201520315796U CN204705701U CN 204705701 U CN204705701 U CN 204705701U CN 201520315796 U CN201520315796 U CN 201520315796U CN 204705701 U CN204705701 U CN 204705701U
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- relay
- measuring circuit
- measuring
- resistance
- plc module
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- Expired - Fee Related
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- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The utility model discloses a kind of relay automatic tester, measuring circuit power supply negative terminal is connected with 150 ohm of measuring resistances, and the other side of resistance is held with the COM of actuating of relay contact and the analog input negative terminal of PLC module is connected; Measuring circuit power positive end is connected with the digital output common port of PLC module, is connected by the analog input anode of PLC module with digital output common port simultaneously, thus forms the measuring circuit of measuring relay action contact both end voltage; Signal generator provides the 10VDC power supply of measuring circuit; Touch-screen is connected with the communication port of PLC module by RS485 communication modes, realizes the function reading and revise PLC module parameter.The utility model relay automatic tester once can detect multiple relay, after coming into operation, automatically can show the resistance between relay contact, and resistance is preserved, the whether bigger than normal and automatic alarm of resistance between automatic decision gets an electric shock, can greatly improve relay test efficiency.
Description
Technical field
The utility model relates to relay reliability automatic tester, belongs to technical field of electric automation, is specially adapted to the system adopting relay as control element in a large number, such as power plant, robotization industry.
Background technology
Relay is one of most important control element in control system of power plant as the automatic switch element with isolation features.The reliability of relay has direct impact to power plants generating electricity unit safe and reliable operation.Need in the middle of maintenance to carry out reliability detection to a fairly large number of relay, the main resistance detecting action contact, manually detects the relay of One's name is legion is single, and while wasting time and energy, Detection job is also difficult to ensure.In the urgent need to utilizing automatic technology to improve relay test quality and quantity, automatic technology is utilized to improve relay test efficiency, effective raising maintenance and daily servicing repeat circuit amount detection, strengthen relay test quality, find that problematic relay processes in time, thus reduce the generation of day-to-day operation repeat circuit class defect, reach the requirement reducing defect counts.
Summary of the invention
The purpose of this utility model is to provide a kind of relay automatic tester, once can detect multiple relay, can greatly improve relay test efficiency.
The technical solution of the utility model is: a kind of relay automatic tester, and it is characterized in that comprising signal generator, measuring circuit and touch-screen, wherein signal generator provides measuring circuit power supply; Measuring circuit power supply negative terminal is connected with 150 ohm of measuring resistances, and the other side of resistance is connected with the analog input negative terminal of the common port of actuating of relay contact and S7-200PLC module; Measuring circuit power positive end is connected with the digital output common port of S7-200PLC module, is connected by the analog input anode of S7-200PLC module with digital output common port simultaneously, thus forms the measuring circuit of measuring relay action contact both end voltage; Touch-screen is connected with the communication port of S7-200PLC module by RS485 communication modes, realizes the function reading and revise PLC module parameter.
The utility model relay automatic tester, once can detect multiple relay, reduce Manual operation link, after coming into operation, touch-screen is utilized automatically to show resistance between actuating of relay contact, and resistance is preserved, the whether bigger than normal and automatic alarm of resistance between automatic decision gets an electric shock, can greatly improve relay test efficiency.
Accompanying drawing explanation
Fig. 1 is the utility model electrical schematic diagram.
Embodiment
As shown in Figure 1, be connected by the anode of 24VDC power supply with coil one end of relay, negative terminal is connected with other one end of relay coil, and for relay provides operation voltage, the coil of several relays takes parallel way to be connected with 24VDC.The COM (public) of actuating of relay contact is held mutual short circuit, and NO (normally opened contact) end accesses digital quantity input (DO) end of S7-200PLC respectively in order.
Utilize signal generator to provide the 10VDC power supply of measuring circuit, measuring circuit power supply negative terminal is connected with 150 ohm of measuring resistances, and the other side of resistance is held with the COM of actuating of relay contact and analog input (AI) negative terminal of PLC is connected; Measuring circuit power positive end is connected with digital output common port, is connected by analog input anode with digital output common port simultaneously, thus forms the measuring circuit of measuring relay action contact both end voltage.By the voltage at two ends, measuring relay action contact, reach the object of calculating action contact resistance.
Touch-screen is connected with the communication port of PLC by RS485 communication modes, can realize the function reading and revise PLC parameter.
In measuring process, the parameter that PLC is arranged by touch-screen, the progressively each relay contact measuring circuit of conducting, the resistance value simultaneously will calculated, shows and is recorded on the panel of touch-screen, and can send warning and information according to setting value.
Claims (1)
1. a relay automatic tester, it is characterized in that comprising signal generator, measuring circuit and touch-screen, wherein signal generator provides measuring circuit power supply; Measuring circuit power supply negative terminal is connected with 150 ohm of measuring resistances, and the other side of resistance is connected with the analog input negative terminal of the common port of actuating of relay contact and S7-200PLC module; Measuring circuit power positive end is connected with the digital output common port of S7-200PLC module, is connected by the analog input anode of S7-200PLC module with digital output common port simultaneously, thus forms the measuring circuit of measuring relay action contact both end voltage; Touch-screen is connected with the communication port of S7-200PLC module by RS485 communication modes, realizes the function reading and revise PLC module parameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520315796.XU CN204705701U (en) | 2015-05-15 | 2015-05-15 | Relay automatic tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520315796.XU CN204705701U (en) | 2015-05-15 | 2015-05-15 | Relay automatic tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204705701U true CN204705701U (en) | 2015-10-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520315796.XU Expired - Fee Related CN204705701U (en) | 2015-05-15 | 2015-05-15 | Relay automatic tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204705701U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105445655A (en) * | 2015-11-14 | 2016-03-30 | 贵州天义电器有限责任公司 | Automatic detection device |
| CN106569128A (en) * | 2016-11-03 | 2017-04-19 | 宁德时代新能源科技股份有限公司 | Detection method and device |
| CN107607855A (en) * | 2017-09-18 | 2018-01-19 | 南京铁道职业技术学院 | A kind of FTGS track circuits relay board test platform |
-
2015
- 2015-05-15 CN CN201520315796.XU patent/CN204705701U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105445655A (en) * | 2015-11-14 | 2016-03-30 | 贵州天义电器有限责任公司 | Automatic detection device |
| CN106569128A (en) * | 2016-11-03 | 2017-04-19 | 宁德时代新能源科技股份有限公司 | Detection method and device |
| CN106569128B (en) * | 2016-11-03 | 2019-07-30 | 宁德时代新能源科技股份有限公司 | Detection method and device |
| CN107607855A (en) * | 2017-09-18 | 2018-01-19 | 南京铁道职业技术学院 | A kind of FTGS track circuits relay board test platform |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151014 Termination date: 20190515 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |