FOXBORO P0926NK
Characterization
PLC function instruction end high - voltage inverter PID closed-loop control
The requirements of closed-loop control of frequency converter put forward by users on site are as follows: frequency converter can automatically adjust the speed of frequency conversion pump according to the change of water consumption of the user system, ending the constant pressure water supply of pipe network;Together with the LCD can be set pressure target value.
According to the user's requirements, the PLC is equipped with special modules fx2n-4ad and fx2n-2da.Fx2n-4ad is an imitation input module with four input channels and a maximum resolution of 12 bits. The imitation input is planned to be -10v ~ 10V or 4 ~ 20mA.Fx2n-2da is a simulated output module, with 2 output channels and a maximum resolution of 12 bits. The output value of the simulated value is planned as -10v to 10V and maybe 4 to 20 mA.In this way, through reading instructions (FROM) and writing instructions (TO), as well as PID closed-loop control function instructions carried by PLC, it can end the PID closed-loop control of pipe network water pressure at the user's site.
The detailed programming process is as follows :PLC reading instruction (FROM) reads the response value of the user's water pressure, and the response value is stored in the D12 data address of the PID instruction with the moving instruction (MOV);The user's water pressure setting value is stored in the D10 data address in the PID command with the move command (MOV);D200 ~ D222 saves working parameters of PID;D14 is the operation value output of PID instruction. The PID closed-loop operation result D14 is written into the simulated output module through the writing instruction (TO) of PLC, and then converted into the simulated signal of -10v ~ 10V or 4 ~ 20mA into the high-voltage inverter controller for frequency setting.
The water supply network of the sewage treatment plant of pangang is huge, and the water pressure of the pipe network is slow to change the speed of the pump. Therefore, the calculation speed of PID should not be too fast, that is, the proportional dispatching should not be too fast. Otherwise, if the water pressure of the pipe network is suddenly changed too much, the frequency converter's dispatching simply constitutes a long time of vibration.According to this situation, as shown in figure 3, you can participate in the PLC control program PID distance accounting time (T0) and PID operation dead zone (M0), so that the PID accounting speed scheduling can be consistent with the pipe pressure change speed, to avoid the pipe pressure shock.
Conclusion
High voltage frequency converter bypass cabinet bypass logic control with PLC to automatically through work in pangang's sewage treatment plant of light high voltage frequency converter to simulate fault description, high voltage inverter automatic bypass cabinet in the transfer from variable frequency power frequency, frequency shift frequency of mutual switch is very convenient, can end within 10 s, greatly advance the reliability of the pump.The field PID closed-loop control effect is very ambitious, the water pressure is not firm very small, not firm beyond 0.1kg, frequency converter can sensitive regulation speed, the water pressure control in the setting and planning, the regulation speed will not occur any vibration.Through the serial port rs-232 communication between PLC and the controller of high voltage inverter, the system pipe pressure and various state quantities of PLC can be supervised on the LCD screen of high voltage inverter.
Packing and delivery items
Packing:Brand new and original in box
Lead time:2-3 days against the payment
Terms of payment:Telegram transfer
Warranty:1 year
Minimum order:1
Products customers also like to search
| 6AV5040-1BF41-0BC0 | 6NG4252-8PS02-5BF0 | ASI533 |
| 6AV5573-1AL00-0AA0 | 6NG4252-8PS03-5BF0 | ALR111-S01RS232C |
| 6AV6541-0AA05-1AB0 | 6NG4252-8PS13-5BF0 | AFS30S/AFS30D |
| 6AV6541-0AA05-1BB0 | 6NG4211-8PS01-1FA4 | SAI143-S33 |
| 6AV6541-0AA05-2BA0 | 6NG4252-8PS11-5BF0 | AAV141 |
| 6NG4212-8PA01-0AA2 | 6ES5101-8UA33 | ALE111-S00 |
| 6NG4212-8PA02-3EA0 | 6ES5101-8UB13 | AIP602 |
| 6NG4251-8PA0.-5EE2 | 6ES5101-8UC11 | AAI143-S00 |
| 6NG4251-8PS0.-5EE1 | 6ES5101-8UC21 | AFV10S |
| 6NG4251-8PA0.-5EE3 | 6ES5101-8UC31 | AAV544 |
| 6NG4251-8PS0.-5EE2 | 6ES5101-8UU13 | PW601 |
在线联系供应商
Other supplier products
 |
Bently nevada | The bently sensor The bently sensor The bently sensor Supplied to Bently Nevada Bently 3300 sensor probe, model: 330101, 330102, 330103, 330104, ... |
 |
GE FANUC IC630MDL327 | Want to buy best parts with a competitive price?Please |
 |
15377-4FM SIEMENS | Contact MollyMobile/Skype/Whatsapp/ LimitedAbout CambiaAutomation LitimedCambia Automation Litimed is a company engaged in electronic products trad... |
 |
Fuji Electric NP1F-HP2/MP2 | Company profile Cambia Automation Limited is a trade company in China. Main business have Bently Nevada , Honeywell , ABB , Allen Bradley , GE Fan... |
|
|
3500/22M 288055-01 | 3500/22M 288055-01 3500/22M 288055-01 CONTACT Trixie Skype&Whats-app: see my profile Email: |
Same products
 |
Floral Garden Tools Set | 卖方: Dongyang Guorui Industry And Trade Co., Ltd. | Investing in a floral garden tools set not only enhances your gardening experience but also add... |
 |
Rice Husk Pellet Machine | 卖方: Jiangsu Kingwood Industrial Co., Ltd. | ● JWZL-420 is the most popular biomass/woodpellet machine of all the pellet mills offered by Ch... |
 |
希腊-小型气相液氮储存罐-液氮容器 | 卖方: 河南天之道生物科技有限公司 | 在科技不断进步的今天，随着现代科研和医疗领域对生物样本的低温保存要求越来越高，小型气相液氮罐的出现，成为这一领域的理想选择。下面KGSQ厂家为您具体介绍一下它的优势特点。 1.气相/液相储存 小... |
 |
Common Rail FuCommon Rail Fuel Injector Nozzle L500PBCel Injector Nozzle L500PBC | 卖方: 738347 | Common Rail Fuel Injector Nozzle L500PBC 0 445 110 189 Injector Valve Set 0 445 110 190 Injector... |
 |
Common Rail FueCommon Rail Fuel Injector Nozzle F00VX40014l Injector Nozzle F00VX40014 | 卖方: 738347 | Common Rail Fuel Injector Nozzle F00VX40014 Common Rail Fuel Injector Nozzle F340 Common Rail ... |
