Wastewater Management
UK installed an Allen-Bradley Powermonitor 3000 on each MCC, each service entrance and each generator. It performs real-time power monitoring, data and event logs, harmonics analysis, sag and surge detection and load factor calculation. The compact power quality and sub-metering monitor helps UK leverage the DeviceNet networks without the need for cumbersome serial interface bridges.
and the communication of all the PACs and DeviceNet networks, including the operations of the valve actuators. The contractor and system integrator were able to focus on the installation and commissioning of the process rather than the communication of the networks, notes Fournier.
Wireless options At a French treatment facility designed by Veolia Water Solutions, an innovative method has been implemented for a common wastewater treatment application involving sludge drying. The sludge drying process is a residual element of the application that takes place once water has been cleaned and decanted. In the SOLIA solar sludge drying process developed
by Veolia subsidiary MSE, sludge is treated by a centrifuge and laid out in windrows in a greenhouse heated by solar radiation. An automated robotic turner is used to aerate the sludge and accelerate water evaporation. The robots are radio-controlled, which provides a more robust solution than the traditional wired approach. With wireless control of the robots, the entire operation is automated, and there is no further need for operators to enter the greenhouse. MSE has decided to attach radios to the robots to enable
Integration was also key to the project’s success. According to Louis Fournier, assistant chief electrical engineer at JL Richards, the engineering company who worked with UK, project milestones missed due to unexpected technology integration and start-up issues can cause delays that are calculated at approximately US$80,000 (€62,000) per day. The system integrator who assisted in start-up and commissioning of the complex network was trained on the PlantPAx Process Automation System. Using one plant-wide control system simplifies training, saves time and facilitates troubleshooting. “The week that the integrator spent at Rockwell
Automation would have easily taken four weeks on site,” says Fournier. “Trying to sort out communication issues on site typically slows down the process.” UK, JL Richards and the system integrator attended
the factory acceptance testing, which took less than two days. They reviewed the EtherNet/IP network redundancy
information to be sent back and forth with the control station. This means the operator can control the robot remotely, program its movements and know its position. The robot has an onboard controller, which interfaces with the radio. “Implementation proved to be very simple, thanks in
particular to ProSoft Technology´s technical support,” explains Xavier Bousquet from Veolia Water Solutions and Technology. “As far as the choice of supplier was concerned, we stuck to the specifications given by RG2I, their local distributor. Our major concern was reliability. We had to have a reliable solution, with none of our users encountering any problems. This is indeed the case with ProSoft Technology´s RadioLinx solution.” According to ProSoft Technology, its RadioLinx solution
brings all the advantages of wireless connection to industrial automation applications, while still offering high levels of reliability. In addition to its ability to withstand harsh operating conditions, it also improves the transmission of Ethernet data packets. The standards set out in IEEE 802.11
Wireless solution for critical data F
reeWave Technologies, manufacturer of high-performance spread spectrum and licensed radios for critical data transmission, has announced that together with its technology solution partner Process Control Dynamics, it has installed wireless data radios for the communication network used by Parker Water and Sanitation District in Colorado, USA. The radios provide real-time monitoring and transmission of critical data to help ensure high-quality, safe water for more than 17,000 single family equivalents (SFEs) deployed across 43 square miles of the Parker community.
Currently, Parker Water and Sanitation District uses FreeWave’s HTPlus, FGR Serial radios and FGR2-IO radios. “FreeWave’s radios were easily integrated into our existing supervisory control and data acquisition (SCADA) network and can communicate with all of our programmable logic controllers (PLCs),” said Kirk Magnusson, systems administration manager at Parker Water and Sanitation District. “The result is one cohesive system that sends critical data in real-time.
“With the configuration and diagnostics tools
that FreeWave offers, we also can manage the radios from our desktop. With our old system, if a radio had a communication issue, someone from the team would have to drive out and locally fix it. The advantages of selecting FreeWave radioshave resulted in exceptional reliability and performance, but we also have been especially impressed by FreeWave’s around-the-clock customer support.” Today, the radios are used for monitoring critical data at its water and wastewater facilities, including tank levels, temperatures, pressures, and pump control. n
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