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The Filter Magic® control design objective was to eliminate the operator error during manual and automatic backwashing. Strict governmental mandates regulating turbidity spikes played a key role in the filter process programming. Our code designers have sorted out the possibilities where an operator could force an unsafe condition during the backwash and installed safe guards. We relied on 30 years of designing filter control systems and consoles to achieve the primary goal of offering the industry a step by step manual assisted and fully automatic backwash program. |
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Filter Magic® filter console has four operation modes. 1) SCADA Automatic - SCADA in the central control room initiates the backwash through the individual filter console that acts as the final arbitrator. The filter console reports all backwash operations to the SCADA. 2) Local Automatic (tier 1 password protected) - An automatic backwash is initiated and performed at the individual filter console, reporting all data to SCADA. 3) Manual (tier 2 password protected) - Operator has ability to open and close all valves at any time. Exception: Software will not allow an operator to open any valve that will jeopardize the integrity of the filter operation. 4) Simulation Mode - Operator has the ability to utilize the simulator to run a backwash cycle without real output that will affect the system. This feature is often used as a training tool for new plant operator. An important aspect of the Filter Magic ® Console is the Magelis HMI (Human Machine Interface). The screen displays unique operating graphics, which show how the console monitors and controls the filter operation. Operator or SCADA issued commands are instantly displayed on the graphic screen. Safeguards in the code will not allow a valve to open or close until the preceding step has been successfully completed. During an automatic backwash, several steps can be extended such as air scour and low/high backwash water durations. This approach is revolutionary in design but at the same time non-proprietary. The IEC Function Block PLC code is provided to the end user. Filter Magic has a Patent Pending on the control system when integrated with a bus network. Due to the individual nature of each filter, the plant operator has the ability to configure multiple parameters such as water levels in the filter basin before initiating backwash, air scour time duration, and low/high backwash durations via the HMI. |
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