CN202333765U - Safe motor driving loop - Google Patents
Safe motor driving loop Download PDFInfo
- Publication number
- CN202333765U CN202333765U CN2011204768731U CN201120476873U CN202333765U CN 202333765 U CN202333765 U CN 202333765U CN 2011204768731 U CN2011204768731 U CN 2011204768731U CN 201120476873 U CN201120476873 U CN 201120476873U CN 202333765 U CN202333765 U CN 202333765U
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- plc
- utility
- contactor
- relay
- model
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Abstract
The utility model provides a safe motor driving loop, belonging to the technical field of a circuit protecting device. Particularly, the utility model relates to the safe motor driving loop. The utility model provides the safe motor driving loop capable of automatically judging and controlling a breaker to switch off. The safe motor driving loop disclosed by the utility model comprises a PLC (Programmable Logic Controller), a motor power supply breaker with a shunt coil, a motor power supply contactor with a bypass auxiliary contact, and a relay. According to the structural points, the port of the PLC is connected with the auxiliary contact and the relay respectively; the relay is connected with the shunt coil; and the PLC controls the shunt coil to switch a loop power supply off when action time of the contactor exceeds a limit by computing the action time of the contactor.
Description
Technical field
the utility model belongs to protective circuit device technique field, relates in particular to a kind of safe motor-driven loop.
Background technology
developing rapidly along with the world aluminum industry; Multi-functional unit becomes the main product on the aluminium industry market gradually; Security incident happens occasionally but suspension hook is rushed to summit etc.; Trace it to its cause for: the motor-driven loop of existing multi-functional unit is generally the circuit breaker that the motor power contactor has been furnished with defencive function, in case contactor breaks down (like adhesion), the shunt opening coil of circuit breaker is cut off in then artificial control.Because it is not prompt enough, accurate that artificial control is cut off, therefore, the time and security incident takes place.
Summary of the invention
the utility model is exactly to the problems referred to above, and the motor-driven loop of the safety of a kind of automatic judgement, the shutoff of control circuit breaker is provided.
are for realizing above-mentioned purpose; The utility model adopts following technical scheme; The utility model comprises the motor power circuit breaker of PLC, band shunt opening coil, motor power contactor, the relay of band bypass auxiliary contact; Its structural feature PLC port links to each other with said auxiliary contact, relay respectively, and relay links to each other with the shunt opening coil; Said PLC is through calculating the operate time of contactor, and control shunt opening coil is at the operate time of contactor of cutoff circuit power supply during overrun.
the utility model beneficial effect: the utility model utilizes PLC to detect and computing, the accuracy that the system that guaranteed is judged.Through the form of shunt opening, the disjunction power supply has fundamentally ensured the safety of equipment, has improved the operating efficiency of producing the user greatly.
Description of drawings
further specify the utility model below in conjunction with accompanying drawing and embodiment.The utility model protection range not only is confined to the statement of following content.
Fig. 1 is the system construction drawing of the utility model.
Fig. 2 is the schematic block circuit diagram of the utility model.
Fig. 3 is the PLC program diagram of the utility model.
Embodiment
are as shown in Figure 1; The utility model comprises the motor power circuit breaker of PLC, band shunt opening coil, motor power contactor, the relay of band bypass auxiliary contact; The PLC port links to each other with said auxiliary contact, relay respectively, and relay links to each other with the shunt opening coil; Said PLC is through calculating the operate time of contactor, and control shunt opening coil is at the operate time of contactor of cutoff circuit power supply during overrun.After PLC calculates and is judged to be adhesion fault, in the output of PLC, provide the shunt opening coil that a breaking signal is given circuit breaker, thus the disjunction ring current.
are as shown in Figure 2; Gather contactor KM1-1, the auxiliary run signal of KM1-2 is to the input module of PLC, after the inner executive program logic determines of PLC; Give an output of outside relay K A1 signal through the output module of PLC; Transfer to the shunt opening coil of circuit breaker Q 1 again through outside relay K A1, carry out the disjunction action, the cut-off loop power supply.
are as shown in Figure 3, and after the internal relay of PLC was carried out halt instruction, the PLC internal clocking picked up counting; 0.5S after, if detecting next signal to contactor bypass auxiliary contact, PLC is still running status, so; System will judge and see off a fault-signal and give outside relay K A1; Give the shunt opening coil breaking signal of circuit breaker Q 1 through outside relay K A1, the cutoff circuit power supply, thus realize the overall process of whole fault detect.
are with being appreciated that; More than about the specific descriptions of the utility model; Only be used to the utility model is described and be not to be subject to the described technical scheme of the utility model embodiment; Those of ordinary skill in the art should be appreciated that still and can make amendment or be equal to replacement the utility model, to reach identical technique effect; As long as satisfy the use needs, all within the protection range of the utility model.
Claims (1)
1. the motor-driven loop of a safety; Comprise the motor power circuit breaker of PLC, band shunt opening coil, motor power contactor, the relay of band bypass auxiliary contact; Its structural feature PLC port links to each other with said auxiliary contact, relay respectively, and relay links to each other with the shunt opening coil; Said PLC is through calculating the operate time of contactor, and control shunt opening coil is at the operate time of contactor of cutoff circuit power supply during overrun.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204768731U CN202333765U (en) | 2011-11-25 | 2011-11-25 | Safe motor driving loop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204768731U CN202333765U (en) | 2011-11-25 | 2011-11-25 | Safe motor driving loop |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202333765U true CN202333765U (en) | 2012-07-11 |
Family
ID=46445731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204768731U Expired - Fee Related CN202333765U (en) | 2011-11-25 | 2011-11-25 | Safe motor driving loop |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202333765U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105591365A (en) * | 2016-02-25 | 2016-05-18 | 珠海格力节能环保制冷技术研究中心有限公司 | Frequency converter main circuit relay failure protection method |
| CN106533148A (en) * | 2016-12-20 | 2017-03-22 | 北京天诚同创电气有限公司 | Photovoltaic inverter having emergency stop function and emergency stop method for photovoltaic inverter |
| CN109661689A (en) * | 2016-09-13 | 2019-04-19 | 罗伯特·博世有限公司 | Method for safety of operation |
-
2011
- 2011-11-25 CN CN2011204768731U patent/CN202333765U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105591365A (en) * | 2016-02-25 | 2016-05-18 | 珠海格力节能环保制冷技术研究中心有限公司 | Frequency converter main circuit relay failure protection method |
| CN109661689A (en) * | 2016-09-13 | 2019-04-19 | 罗伯特·博世有限公司 | Method for safety of operation |
| CN109661689B (en) * | 2016-09-13 | 2021-07-27 | 罗伯特·博世有限公司 | Method for operating a safety device |
| CN106533148A (en) * | 2016-12-20 | 2017-03-22 | 北京天诚同创电气有限公司 | Photovoltaic inverter having emergency stop function and emergency stop method for photovoltaic inverter |
| CN106533148B (en) * | 2016-12-20 | 2019-07-09 | 北京天诚同创电气有限公司 | Photovoltaic DC-to-AC converter with sudden-stop function and the emergency stop method for it |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120711 Termination date: 20171125 |