BMS — Building management system

HVAC operation

• Equipment status, setpoints (changed only through approval and read-back) and weekly schedules.
• Remote adjustments include start/stop commands, speeds, damper and valve positions, process setpoints and power limits; the field DDC or PLC carries them out.

Schedules and holidays

• Holiday calendar (US federal holidays can be added in one click) and exception days, whole-day or for set hours.
• Weekly occupancy schedule per HVAC unit, automatically off on holidays.
• BACnet schedule objects read directly from controllers: Schedule, Calendar, Trend Log (history read with ReadRange) and Notification Class. Changes are submitted as change requests and go through the 8-step flow, ending with a read-back check.

Optimal start

• The platform learns the recovery rate from each early start (warm-up and cool-down separately) and works out how early to start today, extending the lead time when it is very cold or hot outside (between 15 minutes and the unit's limit).
• The result is advice for the controller's schedule; it never starts equipment by itself.

Demand response (OpenADR 2.0b VEN)

• Registers with the utility or aggregator VTN (simpleHttp pull mode), polls on a schedule and answers each event opt-in or opt-out (oadrCreatedEvent), with optional automatic opt-in.
• When an event starts, the site's demand-response plan (by SIMPLE signal level, for example zone setpoints +2°F and chilled-water supply +2°F) is submitted as change requests; when it ends, is cancelled or opted out, requests to restore the original values are submitted.
• Only adjustable points can be part of a plan. VEN certificates are stored encrypted. The EiReport service is not implemented yet.

Automated fault detection and diagnostics (AFDD)

• Rules based on ASHRAE Guideline 36 and NIST APAR / VPACC: supply-air temperature off setpoint, fan at full speed without reaching static pressure, high filter pressure drop, zones persistently too warm or cold, starved terminals, airflow sensor faults, high CO₂ while occupied, high supply humidity and a stuck supply-air sensor.
• A fault is declared only after the rule has held for a set time; it comes with evidence, likely causes and what to check first, raises a low-priority alarm and can create a work order in one click.

Industries

• Biopharma & life sciences
• Logistics & warehousing
• Commercial buildings
• Healthcare

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