CN207164565U - A kind of NPN type proximity switch and intake common-source style PLC match circuits - Google Patents
A kind of NPN type proximity switch and intake common-source style PLC match circuits Download PDFInfo
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- CN207164565U CN207164565U CN201720937315.8U CN201720937315U CN207164565U CN 207164565 U CN207164565 U CN 207164565U CN 201720937315 U CN201720937315 U CN 201720937315U CN 207164565 U CN207164565 U CN 207164565U
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Abstract
The utility model provides a kind of NPN type proximity switch and intake common-source style PLC match circuits, contributes to production scene Automation Elements to be matched with monitoring PLC interface, beneficial to economizing on resources and cost.The circuit includes：NPN type current indicator/proximity switch, Phototube Coupling terminal and unit monitoring system PLC common source type switching input modules；Wherein, the Phototube Coupling terminal input is just connected with the NPN type current indicator/proximity switch signal wire OUT；The negative of the Phototube Coupling terminal input is connected with the NPN type current indicator/proximity switch common wire com, the Phototube Coupling terminal output end is just connected with the unit monitoring system PLC common source type switching input module power ends, and the negative of the Phototube Coupling terminal output end is connected with the unit monitoring system PLC common source type switching input module signal input parts DI.The utility model is applied to hydroelectric power plant's unit monitoring field.
Description
Technical field
Hydroelectric power plant's unit monitoring field is the utility model is related to, a kind of NPN type proximity switch is particularly related to and is total to intake
Source Type PLC match circuits.
Background technology
(wherein, current indicator can also claim the thermal conductivity current indicator that hydroelectric power plant's extensive utilization is designed based on heat exchange principle at present
For flow switch), its probe internally provided heating module and sensible heat module, current indicator heat conduction it is close with detected fluid flow velocity
Correlation, if not having media flow in pipeline, the heat that sensible heat module receives is a fixed value, and when fluid media (medium) flows through
When current indicator is popped one's head in, the heat received by sensible heat module changes with the change in flow of medium, and sensible heat module is again by this temperature difference
Signal changes into electric signal, and processor converts thereof into 4~20mA electric signals again or contact point signal corresponding with setting flow is defeated
Go out.Thermal conductivity current indicator is integrated by flow probe and signal processor, and six LED lights provide becoming for flow regime
Gesture shows that switch motion value can protect the potentiometer under screw to be adjusted simply by front panel, and can provide NPN
Or PNP transistor, relay and analog output form.
Hydroelectric power plant in the past using it is more be the companies such as Tours gram, Mike NPN type current indicator/proximity switch, at the scene
Type switching input module loop, certain hydroelectric power plant are also such to general access unit monitoring system GE9070_PLC altogether.Because being somebody's turn to do
Hydroelectric power plant's unit monitoring system is remodeled transformation, and type switching input module is replaced by unit monitoring system GE9070_PLC altogether
Schneider BMXDDI3202K types, discrete magnitude DC input modules, 32 points of input 24VDC, leakage type, IEC3 classes, 1 × FCN40 points,
Each intake measuring point of BMXDDI3202K type switching input modules is common source characteristic, then scene with NPN type show stream
Device/proximity switch can not match with BMXDDI3202K types PLC in electric power loop polarity, cause original NPN type current indicator/connect
The Automation Elements such as nearly switch can not work, and then cause BMXDDI3202K types PLC to collect each portion of hydroelectric power plant's unit
Rate-of flow (or mechanical thing position amount) signal, wherein, PLC is programmable logic controller (PLC).
Utility model content
The technical problems to be solved in the utility model is to provide a kind of NPN type proximity switch and intake common-source style PLC
Match circuit, to solve live original NPN type current indicator/proximity switch present in prior art and unit monitoring system PLC
Common source type switching input module in electric power loop polarity can not match the problem of.
In order to solve the above technical problems, the utility model embodiment provides a kind of NPN type proximity switch and intake common source
Type PLC match circuits, including：NPN type current indicator/proximity switch, Phototube Coupling terminal and unit monitoring system PLC common source types
Switching input module；Wherein,
The Phototube Coupling terminal input is just connected with the NPN type current indicator/proximity switch signal wire OUT；Institute
State the negative of Phototube Coupling terminal input to be connected with the NPN type current indicator/proximity switch common wire com, the Phototube Coupling
Terminal output end is just connected with the unit monitoring system PLC common source type switching input module power ends, the photoelectricity every
Negative from terminal output end is connected with the unit monitoring system PLC common source type switching input module signal input parts DI.
Further, the Phototube Coupling terminal for input, output be DC24V Phototube Coupling terminal.
Further, the Phototube Coupling terminal output end just with the unit monitoring system PLC common source type switching values
Input module DC+24V power ends connect.
Further, the Phototube Coupling terminal could alternatively be auxiliary reclay.
Above-mentioned technical proposal of the present utility model has the beneficial effect that：
In such scheme, the Phototube Coupling terminal input just with the NPN type current indicator/proximity switch signal wire
OUT connections；The negative of the Phototube Coupling terminal input is connected with the NPN type current indicator/proximity switch common wire com, institute
Just being connected with the unit monitoring system PLC common source type switching input module power ends for Phototube Coupling terminal output end is stated,
Negative and the unit monitoring system PLC common source type switching input module signal input parts of the Phototube Coupling terminal output end
DI connections.So, by increasing a Phototube Coupling terminal in NPN type current indicator/proximity switch loop, original NPN is improved
The loop of type current indicator/proximity switch access unit monitoring system PLC common source type switching input modules, be changed without it is original
The function of original NPN type current indicator/proximity switch is realized on the premise of NPN type current indicator/proximity switch, it is original so as to ensure
The normal work of NPN type current indicator/proximity switch, realize unit monitoring system PLC common source type switching input modules to original
Show the acquisition function of stream signal.
Brief description of the drawings
Fig. 1 is that the NPN type proximity switch that the utility model embodiment provides matches with intake common-source style PLC
Circuit diagram.
Embodiment
To make the technical problems to be solved in the utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing
And specific embodiment is described in detail.
The utility model is total to for the original NPN type current indicator/proximity switch in existing scene with unit monitoring system PLC
Source type switching input module in electric power loop polarity can not match the problem of, there is provided a kind of NPN types proximity switch with open into
Measure common-source style PLC match circuits.
In order to more fully understand the present embodiment, first to common-source style intake loop, altogether type intake loop carry out
Explanation：
Common-source style intake loop refers to that PLC On-off signal loop common port is+24V high potentials；Outside input
When contact point signal disconnects, signal input part is 0V low potentials.
Type intake loop refers to that PLC On-off signal loop common port is 0V low potentials altogether；Outside input connects
When point signal disconnects, signal input part is+24V high potentials.
It is as shown in Figure 1 a kind of NPN type proximity switch that the utility model embodiment provides and intake common-source style PLC
Match circuit, including：NPN type current indicator/proximity switch, Phototube Coupling terminal and unit monitoring system PLC common source type switching values
Input module；Wherein,
The Phototube Coupling terminal input is just connected with the NPN type current indicator/proximity switch signal wire OUT；Institute
State the negative of Phototube Coupling terminal input to be connected with the NPN type current indicator/proximity switch common wire com, the Phototube Coupling
Terminal output end is just connected with the unit monitoring system PLC common source type switching input module power ends, the photoelectricity every
Negative from terminal output end is connected with the unit monitoring system PLC common source type switching input module signal input parts DI.
NPN type proximity switch and intake common-source style PLC match circuits described in the utility model embodiment, the light
It is electrically isolated just being connected with the NPN type current indicator/proximity switch signal wire OUT for terminal input；The Phototube Coupling terminal
The negative of input is connected with the NPN type current indicator/proximity switch common wire com, and the Phototube Coupling terminal output end is just
It is connected with the unit monitoring system PLC common source type switching input module power ends, the Phototube Coupling terminal output end
It is negative to be connected with the unit monitoring system PLC common source type switching input module signal input parts DI.So, by NPN type
Increase a Phototube Coupling terminal in current indicator/proximity switch loop, improve original NPN type current indicator/proximity switch access machine
The loop of group monitoring system PLC common source type switching input modules, before original NPN type current indicator/proximity switch is changed without
The function of realizing original NPN type current indicator/proximity switch is put, so as to ensure the normal of original NPN type current indicator/proximity switch
Work, realize unit monitoring system PLC common source types switching input module to original acquisition function for showing stream signal.
The NPN type proximity switch that the present embodiment provides and the letter of intake common-source style PLC match circuits connection circuit
It is single, it is easy for installation, be not take up shielding cabinet space, and it is safe for operation, reliable, stability is strong.The NPN provided by the present embodiment
Type proximity switch need not change each NPN type current indicator of every unit/close to opening with intake common-source style PLC match circuits
Close, so as to avoid the wasting of resources, saved cost, used suitable for extensive.
The NPN type proximity switch that the present embodiment provides is also applied for class with intake common-source style PLC match circuits
It is similar to the Automation Elements access unit monitoring system PLC common source type switching input modules of NPN type current indicator/proximity switch
Loop situation, connection principle is identical with the present embodiment.
In the present embodiment, the loop of unit monitoring system PLC common source type switching input modules is referred to as：Unit is supervised
The input circuit of control system PLC intake plates.
In order to more fully understand that the NPN type proximity switch that the present embodiment provides matches with intake common-source style PLC
Circuit diagram, with reference to Fig. 1 to Phototube Coupling terminal, the connection of Phototube Coupling terminal input circuit, Phototube Coupling terminal output loop
Connection illustrate, in Fig. 1,1GD represent input, output be DC24V (direct current 24V) Phototube Coupling terminal, NPN type
The model of current indicator/proximity switch can be FCS-G1/2A4-AN8X-H1141：
In the present embodiment, can in monitor screen or transition terminal case each NPN type current indicator/proximity switch signal circuit
Locate one Phototube Coupling terminal of each increase, for this circuit requirements, input+DC24V, output end+DC24V can be selected
Phototube Coupling terminal, input numbering is 1,2, and output end numbering is 3,4.Wherein, " 1 " is Phototube Coupling terminal input
Just, " 2 " are the negative of Phototube Coupling terminal input, and " 3 " for Phototube Coupling terminal output end just, " 4 " are Phototube Coupling terminal
Output end is born.
In the present embodiment, the connection of Phototube Coupling terminal input circuit：Phototube Coupling terminal end number " 1 " (Phototube Coupling end
Sub- input is just) it is connected with NPN type current indicator/proximity switch signal wire " OUT "；Phototube Coupling terminal end number " 2 " (photoelectricity every
It is negative from terminal input) it is connected with NPN type current indicator/proximity switch common wire " 0V " (or " com ")；So, in NPN type
Under current indicator/proximity switch working condition, survey rate-of flow (or mechanical thing position amount) and reach setting value, then element has switching value
Signal output, Phototube Coupling terminal input are switched on, and have electric current to pass through.
In the present embodiment, the connection of Phototube Coupling terminal output loop：Phototube Coupling terminal end number " 3 " (Phototube Coupling end
Sub- output end is just) it is connected with the unit monitoring system PLC common source types switching input module DC+24V power ends；Photoelectricity
Isolation terminal end number " 4 " (Phototube Coupling terminal output end negative) and the unit monitoring system PLC common source type On-off signals
The DI connections of module by signal input；So, Phototube Coupling terminal input has electric current to pass through Phototube Coupling end once being switched on
Sub- output plus terminal has DC+24V voltages, output loop closure, and unit monitoring system PLC collects the stateful change of the intake
Position, then rate-of flow (or mechanical thing position amount) is by normal acquisition, function realization.
In the present embodiment, the power supply mode of the NPN type current indicator/proximity switch is constant.
In the embodiment of foregoing NPN type proximity switch and intake common-source style PLC match circuits, further
Ground, the Phototube Coupling terminal that the Phototube Coupling terminal is input, output is DC24V.
In the present embodiment, because the Phototube Coupling terminal used is existing matured product, therefore, stable and reliable for performance,
Without hidden danger.
In the embodiment of foregoing NPN type proximity switch and intake common-source style PLC match circuits, further
Ground, the Phototube Coupling terminal output end just with the unit monitoring system PLC common source type switching input modules DC+24V
Power end connects.
In the embodiment of foregoing NPN type proximity switch and intake common-source style PLC match circuits, further
Ground, the Phototube Coupling terminal could alternatively be auxiliary reclay.
In the present embodiment, the Phototube Coupling terminal can be realized instead of Phototube Coupling terminal using miniature intermediate relay
Function, still, using auxiliary reclay compared with using Phototube Coupling terminal, relatively take screen cabinet space, and to DC24V electricity
Source capacity there are certain requirements.
It should be noted that herein, such as first and second or the like relational terms are used merely to a reality
Body or operation make a distinction with another entity or operation, and not necessarily require or imply and deposited between these entities or operation
In any this actual relation or order.
Described above is preferred embodiment of the present utility model, it is noted that for the ordinary skill of the art
For personnel, on the premise of principle described in the utility model is not departed from, some improvements and modifications can also be made, these improvement
The scope of protection of the utility model is also should be regarded as with retouching.
Claims (4)
1. a kind of NPN type proximity switch and intake common-source style PLC match circuits, it is characterised in that including：NPN type shows stream
Device/proximity switch, Phototube Coupling terminal and unit monitoring system PLC common source type switching input modules；Wherein,
The Phototube Coupling terminal input is just connected with the NPN type current indicator/proximity switch signal wire OUT；The light
It is electrically isolated the negative of terminal input to be connected with the NPN type current indicator/proximity switch common wire com, the Phototube Coupling terminal
Output end is just connected with the unit monitoring system PLC common source type switching input module power ends, the Phototube Coupling end
The negative of sub- output end is connected with the unit monitoring system PLC common source type switching input module signal input parts DI.
2. NPN type proximity switch according to claim 1 and intake common-source style PLC match circuits, it is characterised in that
The Phototube Coupling terminal that the Phototube Coupling terminal is input, output is DC24V.
3. NPN type proximity switch according to claim 1 or 2 and intake common-source style PLC match circuits, its feature exist
In, the Phototube Coupling terminal output end just with the unit monitoring system PLC common source type switching input modules DC+24V
Power end connects.
4. NPN type proximity switch according to claim 1 and intake common-source style PLC match circuits, it is characterised in that
The Phototube Coupling terminal could alternatively be auxiliary reclay.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720937315.8U CN207164565U (en) | 2017-07-31 | 2017-07-31 | A kind of NPN type proximity switch and intake common-source style PLC match circuits |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720937315.8U CN207164565U (en) | 2017-07-31 | 2017-07-31 | A kind of NPN type proximity switch and intake common-source style PLC match circuits |
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| CN207164565U true CN207164565U (en) | 2018-03-30 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111711441A (en) * | 2019-03-18 | 2020-09-25 | 青海凯之成智能装备有限公司 | Apply to adjustable interface circuit of high-low pressure signal of controller |
| CN114360188A (en) * | 2021-12-13 | 2022-04-15 | 上海汉克威自动化科技有限公司 | Signal processing method for intrinsic safety explosion-proof smoke-sensing temperature-sensing fire detector |
-
2017
- 2017-07-31 CN CN201720937315.8U patent/CN207164565U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111711441A (en) * | 2019-03-18 | 2020-09-25 | 青海凯之成智能装备有限公司 | Apply to adjustable interface circuit of high-low pressure signal of controller |
| CN111711441B (en) * | 2019-03-18 | 2023-04-25 | 青海凯之成智能装备有限公司 | High-low voltage signal adjustable interface circuit applied to controller |
| CN114360188A (en) * | 2021-12-13 | 2022-04-15 | 上海汉克威自动化科技有限公司 | Signal processing method for intrinsic safety explosion-proof smoke-sensing temperature-sensing fire detector |
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