CN208969457U

CN208969457U - A kind of On-off signal output isolation safe grid

Info

Publication number: CN208969457U
Application number: CN201821338373.XU
Authority: CN
Inventors: 吴艳
Original assignee: Chongqing Yucon Electric Co Ltd
Current assignee: Chongqing Yucon Electric Co Ltd
Priority date: 2018-08-20
Filing date: 2018-08-20
Publication date: 2019-06-11
Anticipated expiration: 2028-08-20

Abstract

The utility model discloses a kind of On-off signals to export isolation safe grid, including the close switch of guard grating, contact switch and NAMUR, the input signal of the guard grating input terminal is inputted by contact switch and NAMUR close to switch, the output signal of the guard grating output end is relay contact signal, transistor signal and level signal, and the contact switch includes line fault detection sensing circuit.Advantage: this switching value isolation safe grid are adapted for mount on the burst region of environment complexity, close to switch have line fault detection function, to early period installation test and the later period maintenance have the function of it is quite positive, it is time saving and energy saving.

Description

A kind of On-off signal output isolation safe grid

Technical field

The utility model belongs to signal transmission technology field, and in particular to a kind of On-off signal output isolation safe grid.

Background technique

Currently, the acquisition of industrial signal is the vital ring of major industrial system, especially in burst region, due to Its environmental change is complicated, the high feature of danger coefficient, requires just to need to signal collecting device more intelligent and reliable and stable.

Then, guard grating just comes into being, and the industrial signal in danger area is mainly converted into steady by guard grating by isolation For fixed digital data transmission to the control system of safety zone or other instrument, the safety coefficient of guard grating is high, has incoming line The function of fault detection, equipment install and debug and in terms of it is with the obvious advantage.

Utility model content

A kind of On-off signal of the utility model exports isolation safe grid, is adapted for mount on the blast area of environment complexity Domain has line fault detection function close to switch, has quite positive work to the installation test and the maintenance in later period of early period With time saving and energy saving.

A kind of On-off signal of the utility model exports isolation safe grid, including guard grating, contact switch and NAMUR connect The input signal of nearly switch, the guard grating input terminal is inputted by contact switch and NAMUR close to switch, the guard grating output The output signal at end is relay contact signal, transistor signal and level signal, and the contact switch is examined comprising line fault Survey sensing circuit.

Further, the line fault detection sensing circuit is used to detect the route event of guard grating input terminal input signal Barrier, the line fault LED light shiny red when having detected line fault, on instrument face plate.

Further, the contact switch and the close switch of NAMUR belong to danger area, and the guard grating belongs to safety zone, peace The effect of full grid is exactly that the signal in danger area is isolated, the stable control system for being transferred to safety zone or other instrument.

Further, it is defeated by make and break contact to control danger area as input terminal for the output end of the guard grating of the safety zone Enter the field device at end, this On-off signal exports isolation safe grid can carry out the input of signal from safety zone, by be isolated into The equipment that row is transferred to danger area.

Further, when the safety zone is as input terminal, danger area field device is transmitted a signal to mainly as electricity Magnet valve and alarm.

The beneficial effects of the utility model are: being adapted for mount on the burst region of environment complexity, there is route close to switch Fault detection capability, have the function of to the installation test and the maintenance in later period of early period it is quite positive, it is time saving and energy saving, can also be from The input that safety zone carries out signal carries out signal transmitting to the equipment in danger area.

Detailed description of the invention

It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution in the prior art Specific embodiment or attached drawing needed to be used in the description of the prior art are briefly described, in attached drawing, each element or portion Dividing might not draw according to actual ratio.

Fig. 1 is the relay output connection schematic diagram of the utility model；

Fig. 2 is the transistor output connection schematic diagram of the utility model；

Fig. 3 is the level output connection schematic diagram of the utility model；

Fig. 4 enters two for the relay output two of the utility model and goes out wiring schematic diagram；

Fig. 5 enters two for the transistor output two of the utility model and goes out wiring schematic diagram；

Fig. 6 enters two for the level output two of the utility model and goes out wiring schematic diagram；

Fig. 7 is the wiring schematic diagram that the safety zone of the utility model is exported to the solenoid valve and alarm in danger area；

Fig. 8 enters two for the safety zone of the utility model is exported to the solenoid valve and alarm in danger area two and goes out wiring signal Figure.

Specific embodiment

It is described in detail below in conjunction with embodiment of the attached drawing to technical solutions of the utility model, following embodiment is only For clearly illustrating the technical solution of the utility model, therefore it is only used as example, and it is originally practical to cannot be used as a limitation limitation Novel protection scope.

A kind of On-off signal of the utility model exports isolation safe grid as shown in Figure 1:, including guard grating, contact are opened It closes and NAMUR is close to switch, the input signal of the guard grating input terminal is by contact switch and the close switch input of NAMUR, institute The output signal for stating guard grating output end is relay contact signal, transistor signal and level signal, the contact switch packet Sensing circuit is detected containing line fault.

In the present embodiment, line fault detection sensing circuit is used to detect the route of guard grating input terminal input signal Failure, the line fault LED light shiny red when having detected line fault, on instrument face plate.

In the present embodiment, the contact switch and NAMUR close to switch belong to danger area, the guard grating belongs to safety Area, guard grating effect be exactly the signal in danger area is isolated, the stable control system for being transferred to safety zone or other Instrument.

In the present embodiment, the output end of the guard grating of the safety zone danger controlled as input terminal by make and break contact The field device of area's input terminal, this On-off signal export isolation safe grid can from safety zone carry out signal input, by every Equipment from carrying out being transferred to danger area.

In the present embodiment, the safety zone as input terminal when, mainly transmit a signal to danger area field device For solenoid valve and alarm.

Finally, it should be noted that above embodiments are only to illustrate the technical solution of the utility model, rather than its limitations； Although the utility model is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: It can still modify to technical solution documented by previous embodiment, or to some or all of the technical features It is equivalently replaced；And these are modified or replaceed, it does not separate the essence of the corresponding technical solution, and the utility model is respectively implemented The range of example technical solution, should all cover in the claim of the utility model and the range of specification.

Claims

1. a kind of On-off signal exports isolation safe grid, it is characterised in that: close including guard grating, contact switch and NAMUR The input signal of switch, the guard grating input terminal is inputted by contact switch and NAMUR close to switch, the guard grating output end Output signal be relay contact signal, transistor signal and level signal, the contact switch include line fault detection Sensing circuit.

2. a kind of On-off signal according to claim 1 exports isolation safe grid, it is characterised in that: the line fault Detection sensing circuit is used to detect the line fault of guard grating input terminal input signal.

3. a kind of On-off signal according to claim 1 exports isolation safe grid, it is characterised in that: the contact switch Belong to danger area close to switch with NAMUR, the guard grating belongs to safety zone.

4. a kind of On-off signal according to claim 1 exports isolation safe grid, it is characterised in that: the guard grating Output end controls the field device of danger area input terminal by make and break contact as input terminal.

5. a kind of On-off signal according to claim 4 exports isolation safe grid, it is characterised in that: the input terminal Field device is solenoid valve and alarm.