CN208953939U - A kind of programmable PLC controller - Google Patents
A kind of programmable PLC controller Download PDFInfo
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- CN208953939U CN208953939U CN201821992960.0U CN201821992960U CN208953939U CN 208953939 U CN208953939 U CN 208953939U CN 201821992960 U CN201821992960 U CN 201821992960U CN 208953939 U CN208953939 U CN 208953939U
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- input
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- relay coil
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Abstract
The utility model relates to a kind of programmable PLC controllers, including shell, case top and bottom are separately connected equidistant Input terminal block and output terminal row, control loop is equipped in shell, control loop includes the first relay contact, second relay contact and third relay contact, first relay contact, second relay contact and third relay contact are in series with corresponding first relay coil respectively, second relay coil and third relay coil, and three's parallel connection incoming end is connected with input relay coil, input relay coil simultaneously with input contact, limit switch and input common end are in parallel, control loop output end is connected with contactor and solenoid valve by output common end simultaneously, the load power source being connected with output common end is equipped between contactor and solenoid valve.The utility model has the advantages that utility model works stability is strong, rationally, easy-to-connect is highly-safe for design.
Description
Technical field
The utility model relates to PLC controller technical fields, and in particular to a kind of programmable PLC controller.
Background technique
Programmable logic controller (PLC), a kind of digital electronic device with microprocessor, the number for automation control
Control instruction can be loaded storage in memory at any time and executed by logic controller.Programmable controller is by innernal CPU, instruction
And the units institute such as data memory, input-output unit, power supply mould group, digital simulation modularity is combined into.
PLC controller is widely used in current industrial control field, before programmable logic controller (PLC) appearance, generally
To use hundreds of relay and counter that could form automated system with the same function, and it is present, pass through
The simple programmable logic controller module of programming is substantially instead of these large-scale plants.Programmable logic controller (PLC)
System program it is initialized generally before factory finish, user can be according to their own needs from the corresponding user of edlin
Program meets different automated production requirements.
Existing PLC controller due to a large amount of relay contacts, mostly and poor contact due to contact, be easy to appear therefore
Barrier, while generally having more relay inside controller, wiring is more inconvenient, and it is not reasonable between connection, also reduce dress
The safety set increases production cost, and therefore, reasonable connection type is that technology in the urgent need to address is asked between electricity piece
Topic.
Utility model content
The utility model aim is to provide a kind of programmable PLC controller, provide it is a kind of design rationally and the operation is stable with
And it can reduce the programmable PLC controller of production cost.
In order to achieve the goal above, the technical solution adopted in the utility model are as follows: a kind of programmable PLC controller, including
Shell, the case top and bottom are separately connected equidistant Input terminal block and output terminal row, the Input terminal block
It is equipped with the selection switch being placed on the housing exterior walls between the output terminal row and is located at the selection and switchs bottom
Button switch, the button switch side is connected with ventilation opening on selection switch, control is equipped in the shell
Circuit, the control loop include the first relay contact, the second relay contact and third relay contact, described first after
Appliance contact, the second relay contact and third relay contact be in series with respectively corresponding first relay coil, second after
Electric apparatus coil and third relay coil, and three's parallel connection incoming end is connected with input relay coil, the input relay
Coil is in parallel with input contact, limit switch and input common end simultaneously, and the control loop output end is public by exporting
It holds while being connected with contactor and solenoid valve, be equipped between the contactor and the solenoid valve and be connected with the output common end
The load power source connect.
Further, sign board is fixedly installed on the housing exterior walls.
Further, the control loop accesses one end and is connected with programming device.
Further, the programming device output end is equipped with the voltage-stablizer being connected with the input relay coil.
Further, the load power source input terminal is equipped with the output contact being connected with the output common end.
The utility model has the technical effect that on shell that Input terminal block and output terminal row are respectively used to input and defeated
Signal out, in control loop the first relay contact, the second relay contact and third relay contact be respectively adopted tandem,
Parallel and connection formula is divided to be correspondingly connected with relay coil, input terminal is connected with the limit of user equipment by input relay coil
Bit switch and input contact can be directly connected to by inputting common end, reinforce the stability of connection, prevent contact-segment
Poor contact, the equipment such as the contactor and solenoid valve of output equipment can be provided with power supply by load power source, guarantee control loop
Normal work, such programmable PLC controller substantially increases service performance, and job stability is strong, design rationally, wiring
It is convenient, it is highly-safe.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model programmable PLC controller；
Fig. 2 is the wiring diagram of the utility model control loop.
Appended drawing reference: 1- shell；2- Input terminal block；3- output terminal row；4- selection switch；5- button switch；6- is logical
Air port；7- control loop；The first relay contact of 8-；The second relay contact of 9-；10- third relay contact；11- first after
Electric apparatus coil；The second relay coil of 12-；13- third relay coil；14- input relay coil；15- inputs contact；
16- limit switch；17- exports common end；18- contactor；19- solenoid valve；20- load power source；21- sign board；22- programming is set
It is standby；23- voltage-stablizer；24- output contact.
Specific embodiment
Referring to attached drawing 1-2, a kind of programmable PLC controller, including shell 1 is separately connected at the top and bottom of the shell 1
Equidistant Input terminal block 2 and output terminal row 3, are equipped between the Input terminal block 2 and output terminal row 3 and are placed in
Selection switch 4 on 1 outer wall of shell and the button switch 5 positioned at selection 4 bottom of switch, the button switch 5
Side is connected with ventilation opening 6 on the selection switch 4, and control loop 7 is equipped in the shell 1, and the control loop 7 is wrapped
Include the first relay contact 8, the second relay contact 9 and third relay contact 10, first relay contact 8, second
Relay contact 9 and third relay contact 10 are in series with corresponding first relay coil 11, the second relay coil respectively
12 and third relay coil 13, and three's parallel connection incoming end is connected with input relay coil 14, the input relay line
Circle 14 is in parallel with input contact 15, limit switch 16 and input common end simultaneously, and 7 output end of control loop passes through output
Common end 17 is connected with contactor 18 and solenoid valve 19 simultaneously, between the contactor 18 and the solenoid valve 19 be equipped with it is described
The load power source 20 that output common end 17 is connected.
Preferably, Input terminal block 2 and output terminal row 3 are respectively used to input and output signal, control loop on shell 1
In 7 first relay contact 8, the second relay contact 9 and third relay contact 10 be respectively adopted tandem, it is parallel and point
Connection formula has been correspondingly connected with relay coil, and input terminal is connected with the limit switch 16 of user equipment by input relay coil 14
It with input contact 15, can be directly connected to by inputting common end, the stability of contact-enhancing point connection prevents contact-segment
Poor contact, the equipment such as contactor 18 and solenoid valve 19 of output equipment can be provided with power supply by load power source 20, guarantee
The normal work of control loop, such programmable PLC controller substantially increase service performance, and job stability is strong, design
Rationally, easy-to-connect, it is highly-safe.
Preferably, sign board 21 is fixedly installed on 1 outer wall of shell.
Preferably, the control loop 7 accesses one end and is connected with programming device 22.
Preferably, 22 output end of programming device is equipped with the voltage-stablizer being connected with the input relay coil 14
23。
Preferably, 20 input terminal of load power source is equipped with the output contact 24 being connected with the output common end 17.
Basic principles, main features, and advantages of the present invention has been shown and described above.Current row
The technical staff of industry is described in above embodiments and description it should be appreciated that the present utility model is not limited to the above embodiments
Only the principles of the present invention, the utility model also has respectively on the premise of not departing from the spirit and scope of the utility model
Kind changes and improvements, these changes and improvements are both fallen in the range of claimed invention.The requires of the utility model
Protection scope defined by appended claims and its equivalent.
Claims (5)
1. a kind of programmable PLC controller, including shell (1), shell (1) top and bottom are separately connected defeated at equal intervals
Enter terminal block (2) and output terminal row (3), is equipped between the Input terminal block (2) and output terminal row (3) and is placed in institute
It states the selection switch (4) on shell (1) outer wall and is located at the button switch (5) of the selection switch (4) bottom, the button
Switch (5) side is switched close to the selection is connected with ventilation opening (6) on (4), which is characterized in that be equipped in the shell (1)
Control loop (7), the control loop (7) include the first relay contact (8), the second relay contact (9) and third relay
Device contact (10), first relay contact (8), the second relay contact (9) and third relay contact (10) are gone here and there respectively
It is associated with corresponding first relay coil (11), the second relay coil (12) and third relay coil (13), and three is simultaneously
Connection incoming end be connected with input relay coil (14), the input relay coil (14) simultaneously with input contact (15), limit
Bit switch (16) and input common end are in parallel, and control loop (7) output end is connected simultaneously by exporting common end (17)
There are contactor (18) and solenoid valve (19), is equipped between the contactor (18) and the solenoid valve (19) public with the output
The load power source (20) that end (17) is connected.
2. a kind of programmable PLC controller according to claim 1, which is characterized in that fixed on shell (1) outer wall
Sign board (21) are installed.
3. a kind of programmable PLC controller according to claim 1, which is characterized in that control loop (7) access one
End is connected with programming device (22).
4. a kind of programmable PLC controller according to claim 1, which is characterized in that programming device (22) output
End is equipped with the voltage-stablizer (23) being connected with the input relay coil (14).
5. a kind of programmable PLC controller according to claim 4, which is characterized in that load power source (20) input
End is equipped with the output contact (24) being connected with output common end (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821992960.0U CN208953939U (en) | 2018-11-30 | 2018-11-30 | A kind of programmable PLC controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821992960.0U CN208953939U (en) | 2018-11-30 | 2018-11-30 | A kind of programmable PLC controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208953939U true CN208953939U (en) | 2019-06-07 |
Family
ID=66745275
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821992960.0U Active CN208953939U (en) | 2018-11-30 | 2018-11-30 | A kind of programmable PLC controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208953939U (en) |
-
2018
- 2018-11-30 CN CN201821992960.0U patent/CN208953939U/en active Active
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