.

FOXBORO P0400VE



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

Cambia Automation Limited specializes in sales of industrial automation components. Products include DCS control system cards, programmable PLC mod...
A6312
A6312 Get to know the company quickly Comany Name:Cambia Automation Limited Address:No.83 Hubin East Road,Siming District Website: Producs: Bently...
3500/
3500/ 3500/05 System Rack The 3500/05 System Rack holds all 3500 monitor modules and rack power supplies, allowing modules to communicate with each othe...
ABB	DAI04
ABB DAI04 The introduction of ABB ABB is a pioneering technology leader that works closely with utilities, industry, transportation and infrastructure custo...
RX7i (IC698) IC698CHS217
RX7i (IC698) IC698CHS217 RX7i (IC698) IC698CHS217 RX7i (IC698) IC698CHS217 Need help? Manager: Trixie T: @: Cambia Automation Limited is a professional trade co...
Все товары поставщика

Похожие товары

RONGPENG Air Coil Pallet Nailer Pneumatic Tool MCN90
RONGPENG Air Coil Pallet Nailer Pneumatic Tool MCN90 Продавец: 773794 特点与优势: • 航空级保险杠,耐磨。 • TPE 手柄护套,不易冻裂。 ...
RONGPENG Industrial Air Spray Gun Pneumatic Tool R700
RONGPENG Industrial Air Spray Gun Pneumatic Tool R700 Продавец: 773794 FEATURE: • LVLP(Low Volume.Low Pressure)Spray Gun can operate at less than 10 psi at the no...
Equipments
Equipments Продавец: Lepu Medical Technology(Beijing)Co.,Ltd Lepu Medical Technology ( Beijing ) Co., Ltd was established in 1999. As a professional lepu medi...
RONGPENG Air Drill Pneumatic Tools RP7101
RONGPENG Air Drill Pneumatic Tools RP7101 Продавец: 773794
Sea Freight From Shanghai To COLOMBIA FBA
Sea Freight From Shanghai To COLOMBIA FBA Продавец: Haoocean International Logistics (Shanghai) Co., Ltd. HAOOCEAN International Logistics (Shanghai) Co., Ltd. is an Alibaba's long-term full logistics se...