.

FOXBORO P0950BN



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

6NG4208-8PS01-1AC0 AAV142 6AV4012-0AA10-0AB0
6NG4205-8PS02-1EC4 ASI133 6AV4012-0AA20-0AB0
6NG4205-8PS02-1EA8 ABC11S 6AV4530-1AB08-5AA0
6AV3971-1CA03-0CA0 6NG4205-8PS02 AAI141-H00
6AV3971-1NA01-0CA0 6NG4208-8PS01-1AD0 EB402
6AV3971-1NA01-0DA0 6NG4248-2PS01 ADV142
6AV3971-1NA02-0AA0 6NG4248-2PS03 AAI135-S00
6AV3971-1NA02-0CA0 6NG4205-8PS02-1EA6 ADV159
6AV3971-1NA03-0CA0 6NG4205-8PS02-1ED5 ANR10D
6AV3971-1XD03-0AA0 6NG4205-8PS02-1EC3 AAB841
6AV3971-1XD03-0AB0 6NG4205-8PS02-1ED4 ABC11D





Send product request

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


Send to other suppliers

Other supplier products

honeywell	900TBR-0001	Processor Interface Adaptor
honeywell 900TBR-0001 Processor Interface Adaptor Honeywell International Honeywell International , headquartered in Morristown, New Jersey, is an American multinational company mainly engaged in t...
3500/
3500/ 3500/ 3500/ Bently Nevada | 3500 series monitor Components 3500/93 Panel Mount System Display 3500/93 Interface Module 3500/94M VGA...
ABB	BRC300 PHCBRC30000000
ABB BRC300 PHCBRC30000000 About ABB ABB(ABBN: SIX Swiss Ex) is a pioneering technology leader with a comprehensive offering for digital industries. With a history of innova...
P0961BS-OC
P0961BS-OC Details The Channel Isolated, Discrete I/O Interface Modules (FBM241/b/c/d) have eight discrete input channels and eight discrete output...
Yokogawa	ALR111-S01RS232C
Yokogawa ALR111-S01RS232C Brand new and original in box--2-3 days against the payment--1 Year Warranty--Full Tested --Worldwide Shipping --Good Service..Emergency Sh...
All supplier products

Same products

10000L Bright Beer Tank
10000L Bright Beer Tank Seller: Shandong HG Engineering Equipment Co., Ltd. 10000L Bright Beer Tank is often also called serving tank, tax determination tanks or clear beer ...
2000L Fermentation Tank
2000L Fermentation Tank Seller: Shandong HG Engineering Equipment Co., Ltd. 2000L Fermentation Tank is a Modular cylindrically-conical tank consist of a base tank (BT) and e...
300CPH(5CPM) Semi-Auto Beer Canning Machine
300CPH(5CPM) Semi-Auto Beer Canning Machine Seller: Shandong HG Engineering Equipment Co., Ltd. 300CPH(5CPM) Semi-Auto Beer Canning Machine is specifically designed to beer filling and include ...
2000L 2 Vessel Copper Beer Brewing Equipment
2000L 2 Vessel Copper Beer Brewing Equipment Seller: Shandong HG Engineering Equipment Co., Ltd. 2000L 2 Vessel Copper Beer Brewing Equipment , Copper has the highest heat conductivity, is easy ...
1000L 3 Vessel Beer Brewing Equipment
1000L 3 Vessel Beer Brewing Equipment Seller: Shandong HG Engineering Equipment Co., Ltd. 1000L 3 Vessel Beer Brewing Equipment is a brewery for restaurants, commecial and industrial brew...