CN202612163U - Fan variable frequency speed control system based on programmable logic controller (PLC) - Google Patents
Fan variable frequency speed control system based on programmable logic controller (PLC) Download PDFInfo
- Publication number
- CN202612163U CN202612163U CN 201220235214 CN201220235214U CN202612163U CN 202612163 U CN202612163 U CN 202612163U CN 201220235214 CN201220235214 CN 201220235214 CN 201220235214 U CN201220235214 U CN 201220235214U CN 202612163 U CN202612163 U CN 202612163U
- Authority
- CN
- China
- Prior art keywords
- plc
- fan
- air door
- drive circuit
- controller
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Control Of Ac Motors In General (AREA)
Abstract
The utility model discloses a fan variable frequency speed control system based on a programmable logic controller (PLC) and belongs to fan variable frequency speed control systems. The fan variable frequency speed control system based on the PLC comprises a controller, a frequency converter, a fan, a limit switch, a drive circuit, an electric actuating mechanism and a keyboard module, wherein the controller comprises a PLC. The limit switch is arranged on a ventilation door and connected with the PLC. The frequency converter, the drive circuit and the keyboard module are respectively connected with the PLC. The fan is connected with the frequency converter. The electric actuating mechanism is arranged on a ventilation door and connected with the drive circuit. The fan variable frequency speed control system based on the PLC judges air supply quantity according to the opening and closing state of every ventilation door, and then automatically adjusts the speed of the fan so as to reduce operation load of the fan, achieve energy-saving control to the maximum degree; and saves labor and time due to the fact that the PLC is adopted to control the opening and closing operation of a baffle plate.
Description
Technical field
The utility model relates to a kind of blower fan control system, especially a kind of fan frequency conversion speed-adjusting and control system based on PLC control.
Background technique
The exhaustion day by day of the constantly soaring and natural resources of world energy sources demand has proposed new challenge to industrial enterprise, uses the energy to become the task of top priority as far as possible efficiently.Attend the policy that DOS proposes " practice thrift with exploitation and lay equal stress on " in energy problem, rely on technological progress exactly, energy saving to solve energy problem as China's important techniques economic policy.
The traditional speed regulating methods of equipment such as blower fan, pump class are to regulate to air quantity through baffle plate, the valve opening of regulating inlet or outlet; Under such method of operation; No matter there are how many platform equipment to need air feed; Always with the speed operation of maximum, input power is very big for blower fan, and a large amount of energy consumptions is in the process of damming of baffle plate, valve.And traditional control mode to air door is to regulate to air quantity through inlet is regulated in manual work to each air feed mouth place baffle position, and inconvenience very also is unfavorable for the wind supply quantity of each equipment is control effectively.
The model utility content
The utility model provides a kind of fan frequency conversion speed-adjusting and control system based on PLC control, can effectively solve the problem of electric power energy waste, saves manpower and time, and has reduced cost of production.
In order to address the above problem; The utility model adopts following technological scheme: a kind of fan frequency conversion speed-adjusting and control system based on PLC control, comprise controller, frequency variator and blower fan, and it is characterized in that; Also comprise limit switch, drive circuit, electric actuator and Keysheet module; Said controller comprises the PLC controller, and said limit switch is arranged on the air door and with the PLC controller and is connected, and said frequency variator, drive circuit and Keysheet module are connected with the PLC controller respectively; Said blower fan is connected with frequency variator, and said electric actuator is arranged on the air door and with drive circuit and is connected;
Wherein, The limit switch that is arranged on the air door sends to the PLC controller in order to the state of detection air door and with the air door status information; Said PLC controller sends the blower fan control command according to the air door status information to frequency variator, and said frequency variator carries out the frequency control of motor speed operation according to control command to blower fan; Simultaneously, to the drive circuit sending controling instruction, said drive circuit drives electric actuator according to control command air door is carried out switching manipulation the LC controller according to the control information of Keysheet module input.
The beneficial effect of the utility model is: the utility model is judged wind supply quantity according to each air door switch state, and the speed to blower fan automatically adjusts then, and the load when reducing fan operation realizes maximum Energy Saving Control; Adopt the switching manipulation of PLC control baffle plate, saved manpower and time; Frequency variator can be realized soft starter for motor, compensation power factor, reach the purpose of energy-saving speed regulating through changing equipment input voltage frequency in addition, and protective functions such as overcurrent, overvoltage, overload can be provided to equipment.
Description of drawings
Fig. 1 is the system construction drawing of the utility model.
Embodiment
As shown in Figure 1; A kind of fan frequency conversion speed-adjusting and control system based on PLC control of the utility model comprises controller, frequency variator and blower fan, it is characterized in that; Also comprise limit switch, drive circuit, electric actuator and Keysheet module; Said controller comprises the PLC controller, and said limit switch is arranged on the air door and with the PLC controller and is connected, and said frequency variator, drive circuit and Keysheet module are connected with the PLC controller respectively; Said blower fan is connected with frequency variator, and said electric actuator is arranged on the air door and with drive circuit and is connected; Wherein, The limit switch that is arranged on the air door sends to the PLC controller in order to the state of detection air door and with the air door status information; Said PLC controller sends the blower fan control command according to the air door status information to frequency variator, and said frequency variator carries out the frequency control of motor speed operation according to control command to blower fan; Simultaneously, to the drive circuit sending controling instruction, said drive circuit drives electric actuator according to control command air door is carried out switching manipulation the LC controller according to the control information of Keysheet module input.
The working principle of the utility model: the PLC controller starts, and at first carries out system initialization, and soft start is opened blower fan then; The air door input port is monitored in real time, judge the air feed demand, change the state of output port then through the number of switches of calculating current air door; Thereby adjusting frequency converter frequency; Change the air feed speed of air feed motor, if there is not the variation of the input port of monitoring, by original speed operation.
Below in conjunction with a kind of embodiment the novel embodiment of this use is described:
Energized starts the PLC controller, at first carries out system initialization; Soft start is opened blower fan then, and air door 1-16 is connected on the input port of PLC, the signal that sends through limit switch; The on off state of PLC monitoring air door, the number of switches of 16 air doors of calculating, the output port of PLC links to each other with frequency variator; Number of switches according to air door; The different frequency of control frequency variator output, the motion speed that frequency variator provides different operation frequencies to be used to control motor for the air feed motor, thereby control air feed speed.For the corresponding encoding relation of the number of switches of air door and output port state and frequency shown in table one:
The corresponding encoding relation of table one air door quantity and output port state and output frequency
When needs are regulated wind speed; With key-press module input command in the PLC controller; Through the operation of PLC controller controlling and driving circuit, drive circuit orders about the brake switch running, and the air door baffle plate is opened and closed; After the switching quantity of air door changed, the PLC controller was accomplished the automatic adjusting of wind speed through frequency variator.
The utility model is monitored the on off state of each air door through PLC in real time; On off state according to each baffle plate is judged wind supply quantity; According to the relation between fan operation load and the wind speed, automatically adjust the load when reducing fan operation then through the speed of frequency control of motor speed to blower fan; Thereby farthest reduce wind supply quantity, realize maximum Energy Saving Control; Mode to adopted artificial adjustment air door baffle plate is in the past improved, and adopts the switch of PLC control baffle plate, has saved manpower and time; Frequency variator can be realized soft starter for motor, compensation power factor, reach the purpose of energy-saving speed regulating through changing equipment input voltage frequency in addition, and protective functions such as overcurrent, overvoltage, overload can be provided to equipment.
Except that the described system architecture of the utility model, all the other are existing technology.
The above is the preferred implementation of the utility model; For those skilled in the art; Under the prerequisite that does not break away from the utility model principle, can also make some improvement and retouching, these improvement and retouching also are regarded as the protection domain of the utility model.
Claims (1)
1. fan frequency conversion speed-adjusting and control system based on PLC control; Comprise controller, frequency variator and blower fan; It is characterized in that also comprise limit switch, drive circuit, electric actuator and Keysheet module, said controller comprises the PLC controller; Said limit switch is arranged on the air door and with the PLC controller and is connected; Said frequency variator, drive circuit and Keysheet module are connected with the PLC controller respectively, and said blower fan is connected with frequency variator, and said electric actuator is arranged on the air door and with drive circuit and is connected;
Wherein, The limit switch that is arranged on the air door sends to the PLC controller in order to the state of detection air door and with the air door status information; Said PLC controller sends the blower fan control command according to the air door status information to frequency variator, and said frequency variator carries out the frequency control of motor speed operation according to control command to blower fan; Simultaneously, to the drive circuit sending controling instruction, said drive circuit drives electric actuator according to control command air door is carried out switching manipulation the LC controller according to the control information of Keysheet module input.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220235214 CN202612163U (en) | 2012-05-23 | 2012-05-23 | Fan variable frequency speed control system based on programmable logic controller (PLC) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220235214 CN202612163U (en) | 2012-05-23 | 2012-05-23 | Fan variable frequency speed control system based on programmable logic controller (PLC) |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202612163U true CN202612163U (en) | 2012-12-19 |
Family
ID=47345867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220235214 Expired - Fee Related CN202612163U (en) | 2012-05-23 | 2012-05-23 | Fan variable frequency speed control system based on programmable logic controller (PLC) |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202612163U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103671192A (en) * | 2013-11-26 | 2014-03-26 | 北海恒久天成技术开发有限公司 | Method for adjusting air quantity of variable-frequency fan |
| CN103707629A (en) * | 2013-12-18 | 2014-04-09 | 陕西北人印刷机械有限责任公司 | Fully-automatic hot-air plant for gravure printing machine and control method |
| CN104564766A (en) * | 2014-12-25 | 2015-04-29 | 蚌埠依爱电子科技有限责任公司 | Control method for outputting specified air volume by variable frequency fan under constant pressure |
-
2012
- 2012-05-23 CN CN 201220235214 patent/CN202612163U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103671192A (en) * | 2013-11-26 | 2014-03-26 | 北海恒久天成技术开发有限公司 | Method for adjusting air quantity of variable-frequency fan |
| CN103671192B (en) * | 2013-11-26 | 2016-06-08 | 北海恒久天成技术开发有限公司 | A kind of method regulating air quantity of variable-frequency fan |
| CN103707629A (en) * | 2013-12-18 | 2014-04-09 | 陕西北人印刷机械有限责任公司 | Fully-automatic hot-air plant for gravure printing machine and control method |
| CN104564766A (en) * | 2014-12-25 | 2015-04-29 | 蚌埠依爱电子科技有限责任公司 | Control method for outputting specified air volume by variable frequency fan under constant pressure |
| CN104564766B (en) * | 2014-12-25 | 2016-04-13 | 蚌埠依爱电子科技有限责任公司 | Control method for outputting specified air volume by variable frequency fan under constant pressure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206800507U (en) | Constant pressure water supply system | |
| CN204497749U (en) | Be provided with the comprehensive generating system of reactive power compensator | |
| CN202612163U (en) | Fan variable frequency speed control system based on programmable logic controller (PLC) | |
| CN102384512A (en) | Novel range hood | |
| CN203934045U (en) | The controllable silicon energy saving light modulator of application relay | |
| CN202673731U (en) | Frequency conversion energy-saving control system of dust removal draught fan | |
| CN205064334U (en) | Dust exhausting fan energy -saving control cabinet | |
| CN203161594U (en) | Fan control system for power/variable frequency switching of high-voltage frequency converter | |
| CN207814014U (en) | A kind of novel dust removing fan energy-saving control system | |
| CN205445981U (en) | Take energy -conserving integrated control cabinet of air compressor of touch -sensitive screen | |
| CN204476699U (en) | A kind of piston compressor frequency conversion cooling system based on PID | |
| CN203119830U (en) | Generator load self-adaptation adjustment device | |
| CN103470520B (en) | Large power power electronic appliance power cabinet volume adjusting apparatus | |
| CN111005889A (en) | Intelligent pump station main motor pit ventilation adjusting system and ventilation adjusting method | |
| CN202108760U (en) | Kiln tail fan control device of a cement clinker production line | |
| CN202940765U (en) | Current chopping control device for switched reluctance motor | |
| CN202250755U (en) | Energy-saving device for water pump fan | |
| CN202382359U (en) | Air-conditioner energy-saving controller | |
| CN203336766U (en) | Speed control device for outdoor fan of air conditioner | |
| CN203968020U (en) | Circulating pump frequency-changing control system | |
| CN209200965U (en) | A kind of converter plant based on communication | |
| CN102661283A (en) | Power frequency and variable frequency mixed working condition power station fan RB control system and control method thereof | |
| CN202210226U (en) | Transformer cooling and energy-saving control device | |
| CN202431562U (en) | Frequency-conversion adjusting device of compressor fan | |
| CN210225287U (en) | A open and close circuit fast for electronic well lid |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121219 Termination date: 20130523 |