Challenge:
Ning tap water, according to Suzhou, said the company s total work Tao Weifeng, water is not acceptable, "even two hours does not work," he said, which means that they are looking for suppliers and add new facilities. Suzhou ning water companies focus on product performance and quality. In particular, companies need to be able to provide the ultimate reliability of the control solution - of course, the flexibility and scalability.
Mr. Tao Weifeng also emphasized the speed of installation. "Project extension not only increases cost, and inadequate water supply will also affect the development of Suzhou New District s own"
A series of challenges associated with the control system has emerged one after another. Control solutions need to implement major water treatment plants in cities and 20 km far from Lake pumping station communication link. Furthermore, in order to prevent the occurrence of any work stoppage, Suzhou, Nanjing water treatment plant needs to have the new control system redundancy.
Another challenge is the new water treatment plant operations staff in little or no knowledge, experience, which means control of the system must be intuitive and easy to use.
Solution:
Rockwell Automation based on extensive experience in the water treatment industry and the company s good reputation in product quality, water treatment plant in Suzhou Sunning selected technology, based on Allen-Bradley control solutions. And system integrators as well as Suzhou, Shanghai Far East technology companies with new water treatment company, Ning, Rockwell Automation Global Manufacturing Solutions Group for the new water treatment plant has developed a highly automated solution for full use of its "integrated system structure "technology.
The new control system for water companies based on four Allen-Bradley PLC-5 controller. Three of the controller in the water company water treatment plant in Suzhou, and a large flow through fully redundant control network communication networks. PLC control of the first chemical treatment plant, chemical treatment plant to be completed in the Alcan rally, chloride and calcium in and. The second PLC to monitor the critical filtration process. Here, in the heart of water treatment plants, 10 independent SLC-500 connected to the PLC-5, were in control of 10 independent V-shaped filter in the water balance and operation. According to Mr. Tao Weifeng that this stage is the most important part of the automated system, manual control because they can not be sustained. Also, because this process is essential, therefore to ensure that each filter has a dedicated SLC, in order to provide a degree of redundancy ......