.

FOXBORO P0950BM



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





Отправить запрос, связаться с поставщиком

Кому: Cambia Automation Limited
Ваш E-mail:
Текст письма:


Send to other suppliers

Другие товары поставщика

Bently nevada	74712-06-05-03-04	transducer
Bently nevada 74712-06-05-03-04 transducer Proximity Sensors and Transducers Customers who rely on mission-critical machinery choose our proximity sensors to monitor conditions and protect ...
IC610PER151	plc control system
IC610PER151 plc control system Powering forward GE Power creates the energy technologies of the future and improves the power networks that we depend on today. We create a thir...
Honeywell International Inc.	51307149-175
Honeywell International Inc. 51307149-175 Honeywell International Inc.51307149-175 Honeywell International Inc.51307149-175   ❥❥  TO  Trixie Email:  sales@...
RLY4 2500M/RLY4/XXXXX/XXXXXX
RLY4 2500M/RLY4/XXXXX/XXXXXX Product Introduction: Foxboro DCS (an evolution of Foxboro Evo) is an innovative family of fault-tolerant, highly available control components, wh...
ABB	SAFT 166 APC SAFT166APC	communication
ABB SAFT 166 APC SAFT166APC communication ABBSAFT 166 APC SAFT166APCcommunication About Us Cambia Automation Limited is a trade company in China. Main business have Bently Nevada , H...
Все товары поставщика

Похожие товары

High Speed USB 3.0 AF, Right Angled, 90 degree,DIP Type with KINK Legs(Over PCB)
High Speed USB 3.0 AF, Right Angled, 90 degree,DIP Type with KINK Legs(Over PCB) Продавец: Dongguan AIKE Electronics co., LTD. High Speed USB 3.0 AF, Right Angled, 90 degree,DIP Type with KINK Legs(Over PCB) USB 3.0 Af Suppl...
Кордицепс порошок Cordyceps Cs-4 Powder
Кордицепс порошок Cordyceps Cs-4 Powder Продавец: Hangzhou Molai Biotech Co.,Ltd Cordyceps Cs-4 Powder Product Name: Cordyceps Cs-4 Powder Botanical Name: Cordyceps Sinensis Comm...
High Quality Shiitake Mushroom Extract
High Quality Shiitake Mushroom Extract Продавец: Hangzhou Molai Biotech Co.,Ltd High Quality Shiitake Mushroom Extract Product Name: Medicinal Shiitake Mushroom Extract Botanica...
Coriolus Versicolor Extract health supplement
Coriolus Versicolor Extract health supplement Продавец: Hangzhou Molai Biotech Co.,Ltd Coriolus Versicolor Extract health supplement Product Name: Coriolus Versicolor Extract Exporter ...
High Quality Hericium Erinaceus Extract
High Quality Hericium Erinaceus Extract Продавец: Hangzhou Molai Biotech Co.,Ltd Hericium Erinaceus Extract tablet Product Name: Hericium Erinaceus Extract Botanical Name:&n...