.

FOXBORO P0926NS



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

至: Cambia Automation Limited
Your E-mail:
消息正文:


Send to other suppliers

Other supplier products

IC693PBM200
IC693PBM200 Quick Details Place of Origin: Japan Brand Name: Fanuc Name: FANUC SYSTEM UNIT Quality: 100% tested OK Application: FANUC CNC Machines Item: ...
General Electric		sensor organ
General Electric sensor organ Contact 24/7hours: Manager: Cherish cell / Our company name: Cambia Automation Limited Address: Xiamen, Fujian, China Our main products: ...
Bently Nevada GE	3500/
Bently Nevada GE 3500/ Bently Nevada GE 3500/ Bently Nevada GE 3500/ Bently Nevada GE 3500/ GE Bently Nevada | Advantage Price GE EDI module in the United States ...
GE Bently Nevada | Advantage Price GE EDI module in the United States is operated in a more environmentally friendly way. There is no ...
honeywell	900A01-0102	Communication Interface Adaptor
honeywell 900A01-0102 Communication Interface Adaptor Honeywell International Honeywell International , headquartered in Morristown, New Jersey, is an American multinational company mainly engaged in t...
供应产品

Same products

SANLAND TECHpassive optical receiver, a professional one-st
SANLAND TECHpassive optical receiver, a professional one-st 卖方: Shenzhen Sanland Technology Co.,Ltd. Shenzhen Sanland Technology Co.,Ltd.,is China best supplier in theHardware, equipment, industri...
Radio frequency integrated circuitForward amplifier module
Radio frequency integrated circuitForward amplifier module 卖方: Shenzhen Sanland Technology Co.,Ltd. The Shenzhen Sanland Technology Co.,Ltd. (SANLAND TECH) is an established Hardware, equipment, in...
Good brand, good reputation gpon onu industry preferred
Good brand, good reputation gpon onu industry preferred 卖方: Shenzhen Sanland Technology Co.,Ltd. Shenzhen Sanland Technology Co.,Ltd. is located in Workshop b1501 and 301 of Shangrong industrial...
Airless Bottles Manufacturers
Airless Bottles Manufacturers 卖方: Zhejiang Jinsheng New Materials Co., Ltd. As a famousChina airless bottles manufacturersandvacuum bottles packaging factory, Zhejiang Jinsh...
water park equipment Fiberglass Children Aqua House
water park equipment Fiberglass Children Aqua House 卖方: Guangdong Dalang Water Park Equipment Co.,Ltd. We are majoring in providing water park turnkey service,from project design,equipment production...