Direct Digital Control (DDC) in BAS

Direct Digital Control (DDC)

DDC stands for Direct Digital Control. It is a programmable microprocessor-based system that reads data from BMS input devices, processes that data using programmed logic, and gives output to control equipment in the BMS system.

Direct digital control is the automated control of a condition or process by a digital device (computer)

Direct digital control takes a centralized network-oriented approach. All instrumentation is gathered by various analog and digital converters which use the network to transport these signals to the central controller

Benefits of Direct Digital Control Systems

DDC and other building automation systems offer several advantages for building owners, maintenance staff, and facility managers. A well-designed DDC system will

• Respond quickly to environmental changes, helping maintain more stable temperatures and, ultimately, better occupant comfort year-round
• Boost energy efficiency through programmable operations sequences
• Keep operating costs down by ensuring HVAC systems are running at peak efficiency at all times
• Reduce workloads by automating basic lighting and HVAC processes according to a set schedule
• Assist with diagnostics, reducing downtime and alerting you when preventative maintenance is necessary
• Simplify retro-commissioning, as individual equipment and systems can be swapped out without expensive infrastructural upgrades