Water, sewage treatment industry, analysis of control systems solutions - the water industry, sewage treatment, control systems - electrical industry

Water, sewage treatment industry, analysis of control systems solutions - the water industry

, sewage treatment, control systems - electrical industry

Management control system solutions, the program uses distributed control system, the control system is hierarchical and distributed structure. The whole plant control system sub-2, that is, the central monitoring site controller level and management level. By design, wastewater treatment plant automatic control system to "focus on monitoring, decentralized control" principle, the central monitoring station by the factory level and on-site decentralized controllers by Industrial Ethernet Contact together constitute the whole plant control system network.

Field Control level 1 units with the control room operator stations and a central monitoring station engineers, communications between stations using fiber as a medium of industrial Ethernet switches connected by communication rate of 100MB / S. Communication network with open architecture and the current mainstream of the international TCP / IP communication protocol, can easily and Other Standard network compatible.

A system operating characteristics 1. Scene controller for automatic control equipment and the status of signal acquisition.

2. Central management station is responsible for equipment control, a separate device or system can control the whole plant control center provides the following functions:

1) show all process equipment flow chart shows, real-time equipment status and operating parameters of failure information.

2) all equipment the automatic / manual selection

3) use / standby Pump The order of selection.

4) manual form of device control.

5) the whole plant-wide alarm records.

6) was the selection of equipment management and control.

7) real-time process variable trend. 8) historical trends. 9) report. Two basic components Control system in a Taiwan factory-level central monitoring station operator, is responsible for all controllers with on-site through the Industrial Ethernet Fieldbus Communications; in a separate control room stations 1 station engineer, responsible for control system maintenance, but also the various site controllers via Ethernet communications. Central monitoring station operator station and engineers each other hot spare. Control room in the coarse grid ( PLC 1), fine grid control room ( PLC 2), variable power distribution between the control room (PLC3), dehydration engine room control room (PLC4, PLC4-1), chlorination control room (PLC5), were set up with live controllers.

3, the control system of technical features:

1. System structure Control network capacity of 64 units of equipment, communication rate of 100MB, communication distance 2.0Km, in the event of failure, add or remove any one node will not affect the operation of other equipment and communications. In 2.0KM distance allowed between the communications relay device of any increase.

The system uses the advanced industrial computer control system, mainly used in sewage plant production control, operations, monitoring management. Control system must not only have reliable hardware, but also powerful, reliable, user-friendly system software and programming software.

2. System reliability

Control systems for industrial environments in the strict long-term, stable operation. System components designed to meet the real industrial level, to meet the domestic and international safety standards, and easy to configure, easy connection, easy maintenance, isolation and good, solid structure, corrosion resistance, temperature changes to adapt to a wide range of affordable industrial the stringent requirements of the environment.

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