.

FOXBORO P0926QN



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

6ES5101-8UU43 6NG4212-8PA01-0AA4 SED4D-01
6ES5102-8MA01 6NG4212-8PA02-3CD0 SDV531-S23
6ES5102-8MA02 6NG4212-8PA01-1AA0 AAI143-S00/k4a00
6ES5102-8MA12 6NG4212-8PA02-7CD1 ALR111-S01
6ES5103-8MA01 6NG4212-8PA02-7CE1 S9400UK S9129FA
6ES5103-8MA02 6NG4212-8PA01-0AA3 ASD533
190-CPS40 6NG4212-8PA02-7CB0 AAV144-S00
190E-AND2-CB40S 6NG4212-8PA01-1AC0 EB501
6NG4212-8PA01-1AD0 ADV851 190e-and2-cb40c-ky-r
6NG4212-8PA01-1AE0 AMM12C 190E-MNZ242-CB40s
6NG4212-8PA01-1BB5 AMN51 190S-ANDJ1-CB40C





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

Emerson DeltaV	VE4006P2 KJ3241X1-BA1 12P2506X062
Emerson DeltaV VE4006P2 KJ3241X1-BA1 12P2506X062 Emerson DeltaV VE4006P2 KJ3241X1-BA1 12P2506X062 Emerson DeltaV VE4006P2 KJ3241X1-BA1 12P2506X062 Emerson (Brand New) IN STOCK & 1 YEAR WARRA...
Bently nevada			Seismoprobe* Velocity Transducer
Bently nevada Seismoprobe* Velocity Transducer Company Overview Yokogawa is a leading provider of Industrial Automation and Test and Measurement solutions. Combining superior technology with eng...
3500/
3500/ Contact: Molly Email: Cambia Automation Limited specializes in sales of industrial automation components. Products include DCS control system c...
1746-NO8V
1746-NO8V Company profile Cambia Automation Limited is a trade company in China. Main business have Bently Nevada , Honeywell , ABB , Allen Bradley , GE Fan...
Bently Nevada 3500 Series Machinery Monitoring System Features and Benefits The industry’s most extensive selection of machinery meas...
供应产品

Same products

Customized China high quality waterproof wallpaper design price
Customized China high quality waterproof wallpaper design price 卖方: 仙桃美之家装饰材料有限公司 1.我们采用最新的生产技术,使产品压纹更深,视觉效果更好。 2、采用优质进口材料和胶水,安全环保。 3、全手工封膜,亮度更高,效果更好。 4、完善的集装箱规定可以节省海运费。 5. 经验丰富的工...
亚精胺
亚精胺 卖方: 苏州麦轮生物科技有限公司 中文名称:亚精胺 中文别名:N-(3-氨基丙基)-1,4-丁二胺 英文名称:Spermidine 英文别名:N-(3-Aminopropyl)-1,4-butanediamine; Spermi...
Heat shrinkable tube Boxed
Heat shrinkable tube Boxed 卖方: 华沃热缩材料有限公司 Widely used in wire connection, solder joint insulation protection, wire end treatment resistance...
laser machine 1325
laser machine 1325 卖方: JINAN SEQUOYATEC CO.,LTD Machine Features: Integrated full steel body, low temperature tempering treatment,reduce the d...
Cassava Peeling Machine
Cassava Peeling Machine 卖方: Nanyang Goodway Machinery & Equipment Co., Ltd. Goodway is one of the professional cassava peeler machine manufacturers, providing high quality c...