CN201233432Y - PLC switching value input power supply line failure indication apparatus - Google Patents
PLC switching value input power supply line failure indication apparatus Download PDFInfo
- Publication number
- CN201233432Y CN201233432Y CNU2008201900568U CN200820190056U CN201233432Y CN 201233432 Y CN201233432 Y CN 201233432Y CN U2008201900568 U CNU2008201900568 U CN U2008201900568U CN 200820190056 U CN200820190056 U CN 200820190056U CN 201233432 Y CN201233432 Y CN 201233432Y
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- power supply
- plc switching
- protective tube
- plc
- switching value
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Abstract
The utility model relates to a PLC on-off input power source wire malfunction indication device. A malfunction detection circuit of the device comprises a protective tube, a resistor and a luminous diode, wherein, the protective tube is serially connected with an onsite switch on the power source positive wire to be accessed to the input end of a PLC on-off input module; the protective tube is serially connected with the resistor and the luminous diode to be arranged between the positive wire and the negative wire of the power source. The device is convenient to observe the malfunction indication, and overcomes weaknesses of the prior device that the malfunctions of the circuit cannot be correctly indicated, and the malfunction judgment time is long.
Description
Technical field
The utility model relates to the PLC fault and gets rid of field, particularly PLC switching value input power cord accident indicator.
Background technology
At present, up to a hundred at least of the PLC switching value input power cord of large-scale industrial control equipment from the electric panel room to the production scene, cable failure or connection terminal dust stratification, humidity appear in PLC terminal board that power lead is reached the spot through a segment distance from electric panel room easily, cause short circuit.Cause whole power supply paralysis for fear of certain root line short wherein, and can in time find out the cable that breaks down, the terminal board of indicating fault must be arranged.Existing a kind of terminal board with insurance and indicating fault, circuit just often malfunction indicator lamp goes out.When on-the-spot button was pressed, if the short out road of a certain route, then the protective tube of these terminals blew, and voltage is added in the circuit of LED two ends in parallel with protective tube, makes lumination of light emitting diode.In case on-the-spot button unclamps, then light emitting diode extinguishes, and can not continue indication fault, therefore, does not have the effect of correct indication fault, need improve.
The utility model content
Technical problem to be solved in the utility model provides a kind of PLC switching value input power cord accident indicator, and when the PLC switching value input power cord fault of certain road, the light emitting diode Chang Liang of this road correspondence correctly indicates this road fault.
For solving the problems of the technologies described above, the utility model proposes a kind of PLC switching value input power cord accident indicator, each road PLC switching value input power supply main track inserts the input end of PLC switching input module by on-the-spot switch, the power supply negative wire inserts the common port of PLC switching input module, be connected failure detector circuit between described power supply main track and the on-the-spot switch, described failure detector circuit comprises protective tube, resistance, light emitting diode, described protective tube connects the input end into the PLC switching input module, described protective tube and resistance with on-the-spot switch series on described power supply main track, the light emitting diode series connection just is being connected described power supply, between the negative wire.When the power lead of PLC switching value input end does not have short trouble, the light emitting diode Chang Liang of failure detector circuit.When the power lead short circuit of certain road input end, the protective tube of the failure detector circuit on the corresponding line will blow, and corresponding light emitting diode will extinguish, the line short fault that indication is corresponding.
Therefore, adopt PLC switching value input power cord accident indicator of the present utility model, indicating fault is convenient to observe, overcome existing apparatus and can not correctly not indicate the fault of circuit, when causing the judgment processing fault time long, even cause main equipment out of service, lose bigger shortcoming.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described further.
Fig. 1 is the PLC switching value input power cord accident indicator structural drawing of prior art.
Fig. 2 is a PLC switching value input power cord accident indicator structural drawing of the present utility model.
Embodiment
The PLC switching value input power cord accident indicator structural drawing of prior art as shown in Figure 1, the 24V direct supply is made PLC switching value input power supply, the input end that the positive pole of power supply is connected on PLC switching input module S1 by power lead as shown in the figure 1,3,5,7...31,33,35,37, the common port that the negative pole of power supply is connected on PLC switching input module S1 by power lead as shown in the figure 9,29,39.The switching value input power cord has some, be the detection line fault, each bar is connected with failure detector circuit respectively, as shown in the figure, resistance R 2, light emitting diode LD2 polyphone back is in parallel with protective tube F2, form first via line fault testing circuit, resistance R 3, light emitting diode LD3 polyphone back is in parallel with protective tube F3, form the second route road failure detector circuit, and the like, resistance R N, light emitting diode LDN polyphone back is in parallel with protective tube FN, forms N route road failure detector circuit, some on-the-spot switch AN2, AN3, ... the corresponding respectively first via that connects of ANN, the second the tunnel, ... N road failure detector circuit.With first via line fault testing circuit is example, and PLC switching value input power cord indicating fault principle is described: when the A2 point to the circuit between the input end 1 of PLC switching input module S1 just often, R2 and LD2 are by short circuit, pilot lamp goes out.When pressing on-the-spot button AN2, if the A2 point is to the circuit between the input end 1 of PLC switching input module S1, because short circuit appears in cable failure or connection terminal dust stratification, humidity etc., then protective tube F2 is blown, and 24VDC voltage is added in R2 and LD2 two ends, form the loop with short-circuit line, light emitting diode LD2 is luminous, indication fault, but in case unclamp on-the-spot button, then LD2 extinguishes, and does not have the effect of indication fault.
PLC switching value input power cord accident indicator structural drawing of the present utility model as shown in Figure 2, comparison diagram 1, its improvements are the connection of the failure detector circuit of every circuit.Be that example illustrates still with first via line fault testing circuit, protective tube F2 connects with on-the-spot switch AN2 on the power supply main track and inserts the input end 1 of PLC switching input module S1, and protective tube F2 and resistance R 2, light emitting diode LD2 are connected in series between the positive and negative line of 24V direct supply.When the power lead of A2 point between the input end 1 of PLC switching value module S1 do not have short trouble, the light emitting diode LD2 Chang Liang of failure detector circuit.When A2 point during to the power lead short circuit of the input end 1 of PLC switching value module S1, protective tube F2 will be blown, and light emitting diode LD2 will extinguish, indication first via line short fault.Other arbitrary PLC switching value input power cord indicating fault principle and in like manner above-mentioned repeats no more.
Should be noted that; the exemplary illustration that this embodiment is just done the utility model and do not limit its protection domain; those skilled in the art can also make the change of some unsubstantialities to the utility model; so long as the improvement of carrying out without creative work and to this patent, all within the protection domain of this patent.
Claims (1)
1. PLC switching value input power cord accident indicator, each road PLC switching value input power supply main track inserts the input end of PLC switching input module by on-the-spot switch, the power supply negative wire inserts the common port of PLC switching input module, be connected failure detector circuit between described power supply main track and the on-the-spot switch, described failure detector circuit comprises protective tube, resistance, light emitting diode, it is characterized in that, described protective tube connects the input end into the PLC switching input module, described protective tube and resistance with on-the-spot switch series on described power supply main track, the light emitting diode series connection just is being connected described power supply, between the negative wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201900568U CN201233432Y (en) | 2008-07-31 | 2008-07-31 | PLC switching value input power supply line failure indication apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201900568U CN201233432Y (en) | 2008-07-31 | 2008-07-31 | PLC switching value input power supply line failure indication apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201233432Y true CN201233432Y (en) | 2009-05-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201900568U Expired - Fee Related CN201233432Y (en) | 2008-07-31 | 2008-07-31 | PLC switching value input power supply line failure indication apparatus |
Country Status (1)
| Country | Link |
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| CN (1) | CN201233432Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102074946A (en) * | 2010-11-22 | 2011-05-25 | 中冶南方工程技术有限公司 | External device for preventing PLC module from being burnt out due to high input voltage |
| CN102253300A (en) * | 2011-04-18 | 2011-11-23 | 宁夏巨能机器人系统有限公司 | Electric cabinet detector of numerical control machine |
| CN102467106A (en) * | 2010-11-15 | 2012-05-23 | 深圳市合信自动化技术有限公司 | Programmable logic controller (PLC) digital input control device and control method |
| CN102890235A (en) * | 2011-07-18 | 2013-01-23 | 西门子公司 | Fault detection method and device |
| CN103983882A (en) * | 2013-02-08 | 2014-08-13 | 施耐德电器工业公司 | Device and method for detecting connectivity of digital input signal line |
| CN104459446A (en) * | 2014-12-19 | 2015-03-25 | 卡尔迈耶（中国）有限公司 | Air-jet electric cabinet detecting device |
-
2008
- 2008-07-31 CN CNU2008201900568U patent/CN201233432Y/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102467106A (en) * | 2010-11-15 | 2012-05-23 | 深圳市合信自动化技术有限公司 | Programmable logic controller (PLC) digital input control device and control method |
| CN102467106B (en) * | 2010-11-15 | 2014-06-04 | 深圳市合信自动化技术有限公司 | Programmable logic controller (PLC) digital input control device and control method |
| CN102074946A (en) * | 2010-11-22 | 2011-05-25 | 中冶南方工程技术有限公司 | External device for preventing PLC module from being burnt out due to high input voltage |
| CN102074946B (en) * | 2010-11-22 | 2013-10-30 | 中冶南方工程技术有限公司 | External device for preventing PLC module from being burnt out due to high input voltage |
| CN102253300A (en) * | 2011-04-18 | 2011-11-23 | 宁夏巨能机器人系统有限公司 | Electric cabinet detector of numerical control machine |
| CN102890235A (en) * | 2011-07-18 | 2013-01-23 | 西门子公司 | Fault detection method and device |
| CN102890235B (en) * | 2011-07-18 | 2015-09-02 | 西门子公司 | A kind of fault detection method and device |
| CN103983882A (en) * | 2013-02-08 | 2014-08-13 | 施耐德电器工业公司 | Device and method for detecting connectivity of digital input signal line |
| CN103983882B (en) * | 2013-02-08 | 2016-12-28 | 施耐德电器工业公司 | The device and method of detection digital input signals wire connectivity |
| CN104459446A (en) * | 2014-12-19 | 2015-03-25 | 卡尔迈耶（中国）有限公司 | Air-jet electric cabinet detecting device |
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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: 20090506 Termination date: 20140731 |
|
| EXPY | Termination of patent right or utility model |