What is a sequence of operations (SOO) in BAS, and what is its purpose?

What is a sequence of operations (SOO) in BAS, and what is its purpose?

• A. A predefined set of interdependent control actions for a system or zone to achieve a desired operating state.
• B. A static hardware wiring diagram.
• C. A manual only start procedure.
• D. A daily energy report.

Answer: (A)

A sequence of operations in a Building Automation System is a predefined set of interdependent control actions for a system or zone that leads it to a desired operating state. Its purpose is to coordinate equipment so startup, operation, and shutdown happen in a safe, reliable, and efficient order, with the right timing, interlocks, and conditions. This means the SOO specifies what actions must occur, in what order, and under which sensor or status conditions, so the system can automatically reach and maintain the intended state without manual intervention. For example, a sequence might ensure power is stable, then bring on ventilation, verify outdoor air and setpoints, start the primary equipment, and finally apply the correct control signals to achieve the target temperature or airflow—and it would also define how to shut everything down safely. The other options describe things that aren’t sequences of automated control actions: a wiring diagram shows hardware connections, a manual start procedure is a one-off hand-operated process, and a daily energy report is data about energy use, not a defined operational sequence.

A sequence of operations in a Building Automation System is a predefined set of interdependent control actions for a system or zone that leads it to a desired operating state. Its purpose is to coordinate equipment so startup, operation, and shutdown happen in a safe, reliable, and efficient order, with the right timing, interlocks, and conditions.

This means the SOO specifies what actions must occur, in what order, and under which sensor or status conditions, so the system can automatically reach and maintain the intended state without manual intervention. For example, a sequence might ensure power is stable, then bring on ventilation, verify outdoor air and setpoints, start the primary equipment, and finally apply the correct control signals to achieve the target temperature or airflow—and it would also define how to shut everything down safely.

The other options describe things that aren’t sequences of automated control actions: a wiring diagram shows hardware connections, a manual start procedure is a one-off hand-operated process, and a daily energy report is data about energy use, not a defined operational sequence.