.

FOXBORO P0400DA



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.

4. 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

6AV3627-6QL00-1BC0 6NG4244-8PS02-5DF1 RS-422/RS-485
6AV3637-1LL00-0AX0 6NG4202-8PS04-4AD1 ACM12
6AV3637-1LL00-0AX1 6NG4243-2X AAV144
6AV3637-1LL00-0BX0 6NG4208-8PS02-1AB0 ADV561
6AV3637-1LL00-0FX1 6NG4208-8PS01 AMN33
6AV3637-1ML00-0BX0 6NG4208-8PS02-1AC0 ASD143
6NG4208-8PS02-1AA0 SAI143-H33 6AV3972-1XB00-0AA0
6NG4208-8PS01-0AC0 AFV10D-S41201 AFV10D-S41211 6AV4010-1AA00-0AA0
6NG4208-8PS01-1AB0 SED4D-11 6AV4010-1AA10-0AA0
6NG4208-8PS02-1AD0 ADR541 6AV4010-1AA10-0AB0



Send product request

To: Cambia Automation Limited
Your E-mail:
Message text:


Send to other suppliers

Other supplier products

KJ2003X1-BA2	 Power Supply Module
KJ2003X1-BA2 Power Supply Module About Emerson Emerson concentrates on the most complex and profound challenges facing the world in the process, industrial, commercial and res...
kokusai	3RFA007089
kokusai 3RFA007089 AboutKokusai Electric Kokusai Electricis a leading company in providing high-productivity batch processing systems and services for memory, foundry...
1C31110G03  	OVATION
1C31110G03 OVATION 1C31110G03 OVATION 1C31110G03 OVATION 1C31110G03 OVATION Bently Nevada | Emerson IN STOCK & 1 YEAR WARRANTY 3500 Machinery Protection System...
GE Bently Nevada | Advantage Price GE EDI module in the United States is operated in a more environmentally friendly way. There is no acid...
3500/
3500/ Contact: Molly Email: Cambia Automation Limited specializes in sales of industrial automation components. Products include DCS control system c...
All supplier products

Same products

SANLAND TECHpassive optical receiver, a professional one-st
SANLAND TECHpassive optical receiver, a professional one-st Seller: 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 Seller: 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 Seller: 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 Seller: 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 Seller: Guangdong Dalang Water Park Equipment Co.,Ltd. We are majoring in providing water park turnkey service,from project design,equipment production...