Design New SCADA System

Design New SCADA System

Location: O’Fallon, Ill.

Client: City of O’Fallon, Ill.

Completion Date: Fall 2007

This project includes the design, bid and construction phase services for a supervisory control and data acquisition (SCADA) system. The SCADA system will allow monitoring and control of the city-operated water distribution system including:

  • Water booster pump stations
  • Water storage tanks
  • Flow metering stations
  • Water booster pump stations
  • Water storage tanks
  • Flow metering stations

The O’Fallon Water Distribution SCADA system consists of a central computer system (master station), located at the Public Works Compound, and 10 remote sites. Five of the remote terminal units (RTUs) have been installed.

Each of the RTUs consisting of a local programmable logic controller (PLC) processor (various Allen-Bradley PLCs are used, depending on site requirements) and associated radio equipment. The five local RTUs monitor and control the local operations at the various pumps, pressure monitoring, metering and elevated tank stations.

The future RTU for the French Village booster pump station includes a graphical operator interface (Allen-Bradley Panelview), which displays status of the pumping equipment as well as status of ancillary systems such as the local backup generator and automatic transfer switch.

The master station is collocated with a second booster pump system. The master station includes a graphical operator interface to allow local monitoring of the booster station as well as the status, operation, and control of the other stations. The master station equipment monitors the remote RTUs via a licensed radio modem system which was installed as part of this project.

Sites are equipped with directional Yagi or omnidirectional vertical antennas as determined by a radio path study. Antennas are mounted on local structures such as water tanks or buildings where available. Where necessary the antennas are mounted on a fiberglass pole.