FOXBORO P0914XB

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

6NG4205-8PS02-1EE1	SSC50C	6AV6541-0AA05-2BB0
6NG4205-8PS02-1EB1	SAI143-H03	6AV6541-0AA05-2BC0
6NG4245-8PS01-1AA1	PW482	6AV6541-0AA05-2BD0
6NG4207-8PS02	AAI543-S00	6AV6541-0AA05-2BE0
6NG4252-8PS01-5BF0	AAV544-S00	6AV9010-1AB00
6NG4248-2PS02	AAT141	6AV9020-1DB00
6NG4211-8PS01-1FA1	SPW482-13	6AV9040-1CB10
6NG4247-1BS01	AMM52T	6AW5455-0AE
6AV4530-1BC00-7AA0	6NG4252-8PS12-5BF2	ALF111-S00
6AV4530-1BD00-7HA0	6NG4252-8PS12-5BF0	AAI543-S00/A4S00
6AV5040-1BF12-0BA0	6NG4251-8PA0.-5EE1	SSB401-13

​

Other supplier products

	1769-L30ER-NSE	Product presentation Allen-Bradleyis the brand-name of a line offactory automationequipment, today owned byRockwell Automation. The company, with ...
	22B-D4P0N104	Our Business Scope Bently Nevada, ABB,GE,Rockwell,Foxboro, Invensys Triconex, Westinghouse,Schneider Modicon,Siemens,Woodward,GE FANUC, Motorola,Y...
	1756-IT6I ALLEN BRADLEY	Allen Bradley 1746-A10 PRODUCT DESCRIBE: TheAllen-Bradley1746-A10 is a modular chassis used with the SLC 500 system. The1746-A10has 10 slots fo...
	Fuji Electric NP1L-RS3	Company profile Comany Name：Cambia Automation Limited Address：No.83 Hubin East Road，Siming District Producs:Bently Nevada, ABB, GE, Rockwell, Fo...
	2711-K10C10	Our Business Scope Bently Nevada, ABB,GE,Rockwell,Foxboro, Invensys Triconex, Westinghouse,Schneider Modicon,Siemens,Woodward,GE FANUC, Motorola,Y...

供应产品

Same products

	多哥细胞冷冻容器KGSQ液氮野外罐	卖方: 河南天之道生物科技有限公司	液氮罐的使用，覆盖科研、畜牧、美食、美容、冷冻配件等行业，但主要还是用于生物样本保存。 保存生物样本可细分为两大类，动物精液和实验细胞。两种用法适用容器不同，各有特色。冻精保存，要配圆提桶使用...
	White Fiberglass Surface, Packaging Type: Roll at	卖方: Jiangsu Zeyusen Carbon Fiber Technology Co., Ltd.	Fiberglass surface mat is mainly used in the surface layer of fiberglass merchandise, it has th...
	布隆迪细胞储存液氮容器 KGSQ 冷冻杜瓦瓶	卖方: Henan Tianzhidao Biological Technology Co., Ltd.	液氮罐的使用，覆盖科研、畜牧、美食、美容、冷冻配件等行业，但主要还是用于生物样本保存。 保存生物样本可细分为两大类，动物精液和实验细胞。两种用法适用容器不同，各有特色。冻精保存，要配圆提桶使用...
	3x large magnifying glass with LED - evenly illuminates viewing area	卖方: PHONEFIX technology Co.,Ltd	RECTANGULAR SHAPES THE WAY YOU NATURALLY READ: The rectangular lens is especially design to sim...
	NDT3055L 3055L SOT-223 汽车电脑板 晶体管	卖方: 深圳维客修有限公司	NDT3055L 3055L SOT-223汽车电脑板晶体管是现代汽车电脑维修中使用的关键部件。 作为一名技术精湛的手机维修专家，我了解确保所有组件顺利运行以保证汽车电脑系统的最佳性能和使用寿命...