.

FOXBORO P0926WP



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

6NG4212-8PA01-1DA0 AFS40S/AFS40D 45C340
6NG4212-8PA03-1AA0 AAI143-S03/A4S00 45C341
6NG4212-8PA03-1AB0 AFS10D/AFG10D 45C342
45C343 6NG4212-8PA03-1AC0 AAI141-S00/K4A00
45C344 6NG4212-8PA03-1AE0 EC401
IS210AEPSG2B 6NG4212-8PA03-1AD0 ARM55C ARM55C-000
6NG4212-8PA03-1AC0 6NG4212-8PA01-3BA2 SDV531-S33
S800 3BSE008510R1 6NG4212-8PA01-3AA2 SPW484-13
6NG4212-8PA01-2BA0 AAM51 S800 3BSE008508R1
6NG4212-8PA01-2CA0 ARS15B 45C364
6NG4212-8PA01-3CB3 SCB110-S0 45C37A
6NG4212-8PA03-1BA3 AMN34 45C37B




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

6ES5526-3LA11
6ES5526-3LA11 Siemens is a Germany-based multinational company in the field of electronics and electrical engineering. They offer products for industrial automat...
3300/36 2-ch. Tem-perature (TC/RTD)
3300/36 2-ch. Tem-perature (TC/RTD) 3300/36 2-ch. Tem-perature (TC/RTD) 3300/36 2-ch. Tem-perature (TC/RTD) Bently Nevada | 3500 series monitor Components 3500/93 Pane...
Bently Nevada USA 3500/22M 138607-01
Bently Nevada USA 3500/22M 138607-01 Bently Nevada USA 3500/22M 138607-01 Bently Nevada USA 3500/22M 138607-01 CONTACT Trixie Skype&Whats-app: see my profile Email:
Allen bradley	1336F-BRF50-AN-EN	Malaysia
Allen bradley 1336F-BRF50-AN-EN Malaysia Rockwell automation :Allen-Bradley Allen-Bradley is the brand-name of a line of factory automation equipment, today owned by Rockwell Automation. T...
YOKOGAWA	ADV561-P00 S2
YOKOGAWA ADV561-P00 S2 YOKOGAWA ADV561-P00 S2 YOKOGAWA ADV561-P00 S2 Bently Nevada | Emerson IN STOCK & 1 YEAR WARRANTY 3500 Machinery Protection Systems Our 350...
供应产品

Same products

Debris Fence
Debris Fence 卖方: ANPING COUNTY ZHUANYE WIRE MESH MANUFACTURING CO.,LTD Debris Fence Product Description Chain & Shade Netting Chain & shad...
15 - 30mm Width Rat Glue Trap Making Machine Yellow Fly PP Glue Trap Machine
15 - 30mm Width Rat Glue Trap Making Machine Yellow Fly PP Glue Trap Machine 卖方: HEBEI JINGUANG PACKING MACHINE CO.,LTD e.the melter is equipped with: 40kg /80kg capacity, f. middle speed model machine almost zero mal...
Feeder Material Rat Glue Trap Making Machine Sheets Rat Killer Boards Making Machine
Feeder Material Rat Glue Trap Making Machine Sheets Rat Killer Boards Making Machine 卖方: HEBEI JINGUANG PACKING MACHINE CO.,LTD machine feature: The automatic feeder rat killer boards makingmachinery produced by our company ...
custom Aluminum CNC machining parts
custom Aluminum CNC machining parts 卖方: Brishine United Brishine United Industry Co.,Limited is a famous China custom aluminum CNC machining parts manu...
GS高效转子混砂机
GS高效转子混砂机 卖方: 青岛三铸机设备制造有限公司 低速刮板与中速转子最佳配合,混砂量大,混匀能力强,型砂综合性能好。 辉绿岩铸石,碳化坞堆焊、2号填料等新材料,大大提高了易损件的寿命。 合金钢齿轮,1号填料、润滑控机,确保传动系统平衡可靠。 对...