SCADA (Supervisory Control and Data Acquisition) is an industrial control system that monitors and controls large-scale infrastructure including HVAC systems, power distribution, and energy generation. SCADA systems collect real-time data from remote sensors and equipment, display system status to operators, and execute automated control commands. These systems are critical for managing complex energy facilities and large building portfolios.
Technical Details
SCADA architectures include field devices (sensors, variable frequency drives, thermostats), remote terminal units (RTUs) or programmable logic controllers (PLCs), a central control server, and operator interface displays. Modern SCADA systems communicate over industrial networks including Ethernet and cellular connections. Data collection intervals range from 1-60 seconds depending on application. SCADA systems typically monitor 100-10,000 data points in large facilities. System latency is usually under 5 seconds, enabling responsive control of HVAC equipment, chiller operations, and pump systems.
HVAC Applications
SCADA systems provide centralized control of district heating/cooling systems, large campus HVAC networks, and industrial process cooling. They enable demand response integration, predictive maintenance, and energy optimization. Data from SCADA systems supports trending analysis and performance benchmarking across facilities.