A Pre-SCADA System Assessment
By Randy Dennison
Introduction
Supervisory Control and Data Acquisition (SCADA) is a process control system that enables a site operator to monitor and control processes distributed among various remote sites. Such systems can be used to monitor and control land, air or water pollution control equipment, or just about any manufacturing process.
A properly designed SCADA system saves time and money by eliminating the need for service personnel to visit each site for inspection, data collection/logging or make adjustments. Real-time monitoring, system modifications, troubleshooting, increased equipment life and automatic report generating are just a few of the benefits that come with today’s SCADA systems.
As technology continues to advance, such systems will be the operating standard for process control. But from hundreds of system providers available today, which one will a facility choose to partner with and why?
Choosing a system provider that will design a system applicable to an operator’s needs can be an overwhelming, confusing task. With little or no knowledge of SCADA and telemetry systems and an incomplete pre-system assessment, decisions can include costly mistakes. Too often the decisions are based upon:
Price:
The quality of system components and workmanship may suffer when vendors low-bid to win the contract. The vendor may then indiscriminately cut costs to make a profit.
Proprietary equipment - If proprietary, closed-protocol equipment is installed in the system, the customer can be forced to pay inflated prices and face the possibility of future equipment integration problems due to obsolete or irreplaceable components, company shutdowns and a lack of support when it comes time for repair.
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