Building Management System (BMS)

Overview

A Building Management System (BMS), also called a building automation system, is a central control system for a building’s mechanical and electrical services. It monitors and controls heating, ventilation and air conditioning (HVAC), lighting, shading, access, security and energy metering from a single platform.

The result is a building that is more comfortable for occupants, cheaper to run and easier for the facilities team to look after.

What a BMS controls

  • HVAC: air handling units, chillers, fans and zone temperatures, run on schedules and sensor readings.
  • Lighting: switching and dimming by schedule, occupancy or daylight.
  • Shading and glazing: blinds and shades that manage solar heat and glare.
  • Access control and CCTV: integration with door access, cameras and motion detectors.
  • Fire and safety: an interface with the fire alarm system, which takes priority over normal control.
  • Energy metering: monitoring of consumption by system, floor or tenant.

Benefits of a BMS

  • Lower energy use, because equipment runs only when and where it is needed.
  • Better comfort, with zone-by-zone temperature and lighting control.
  • Faster maintenance, with fault alarms by email or SMS and equipment run-time records.
  • Improved security through access control and surveillance on the same platform.
  • One dashboard for the whole building, locally or remotely.

Open protocols and where a BMS fits

A BMS built on open protocols such as BACnet, Modbus, LonWorks, KNX and DALI can integrate equipment from different manufacturers, and gateways can bring a standalone unit into the central system.

It suits new commercial offices, institutional and industrial buildings, and existing buildings upgraded with a new system.

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