Far, intelligent 300 series PLC application in sewage treatment plant

in recent years, the state attaches great importance to the rising of environmental protection, sewage treatment has been included in the focus of environmental governance, municipal construction or factory environmental protection project of sewage treatment plant is becoming more and more far, intelligent YEZN - hangzhou The 300 series modules ( 321 - 1BL00、322- 1 hh01,331 - 1 kf02, etc. ) System design and construction of sewage treatment plant automation monitor system is not only good for monitoring and remote operation of wastewater treatment process, and by using S7 - 300, the expansion of the flexible structure system has a wide distribution in the sewage treatment equipment for data acquisition, economical and practical for the manufacturer to provide a set of automatic monitoring solution. We design the guiding ideology is to provide sewage treatment plant at present domestic advanced sewage treatment plant automation centralized monitoring system. By adopting the advanced automation hardware and software platform, make the design fully meet all the requirements for the manufacturer. The system provides the following main features: & emsp;   1) Real-time centralized monitoring and recording the various qualities of the sewage treatment process parameters;     2) Real-time centralized monitoring and recording the sewage factory related production equipment running status;     3) Process of sewage treatment equipment is controlled by PLC for centralized coordination;     4) Automatically finish class, daily and monthly production report; Operator operation records and print it.     5) Alarm and alarm record; Equipment maintenance guidance;     Monitoring system, the scheme of SCADA system by PLC system input card gathering up pieces of data processing scheme based on logic control, and then by the output card to perform operations, at the same time, through the industrial computer for field detection instrument signal, rev. Stop of water pump, valve switch state, such as monitoring, and browse the process flow diagram, can be directly on the industrial PC for pumps, valves, etc. , can also generate alarm list, report, etc. Engineers may also directly look for relevant procedure to find the cause of the problem in the industrial control, and can modify the program online, to improve the technological requirement. Alarm system as long as there is a pump, fan, mixer, etc. There will be a public failure alarm, by installing in the control room of the speaker alarm to sound an alarm, to remind the operator attention. And through the industrial computer corresponding picture is that a device failure happens, so that operators and maintenance personnel to deal with failure. Additional water transfinite alarm is also with a public alarm, by installing in the control of indoor sound alarm to alert to remind operator handle in time.     Operating mode we will provide the implementation of the automatic monitoring system can be easily three kinds of operation mode: 'remote operations' refers to the control room at the scene or power plant control room of the workstations and terminal operators to the start-stop of site equipment, valves and so on, switch, or on a computer screen. 'on-site operation refers to the devices can be achieved in situ operation, electrical cabinets at the scene or press the button on the operation box beside. Due to the low water level 'automated' refers to the external causes, through the PLC system to control the pump operation, such as the output to protect the security of the site equipment and process.     We can design the plan, with advanced, open, distributed structure; Reliable and normal operation of the cases almost free maintenance; Flexible extension; Master the easy, friendly interface in Chinese; Sexual/price ratio is high; Cable laying low, etc. Application of S7 - 300 CPU control station, by far, intelligence S7 - 300 PLC module cost solutions, combined with industrial control configuration software and industrial PC station operation, realize the monitoring of sewage treatment plant industrial field. Do good man-machine dialogue, convenient operating personnel at the scene of the control room to know motor, pump, mixer, electric valve equipment running status, can be realized by operating station and the remote operation of field devices, at the same time, the field device controlled by PLC controller system to realize interlock protection. Maintenance personnel can directly from the operating site flexible configuration and convenient search field equipment failure reasons. Did it is intuitive and cost saving.
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