Modern Building Services
Home
Menu
B&Q does it with Synapsys
Published:  08 April, 2008

To optimise the use of natural light in its stores, B&Q has installed the Synapsys IP (SIP) DALI system to integrate DALI (Digital Addressable Lighting Interface) lighting devices with the building-management system.

The requirement was for a lighting control system to control specific requirements and offering the flexibility to control lighting in response to variables such as natural light levels, temporary area lighting needs and the ability to report to Trend building-management systems.

Lighting loops in the stores are wired to the SIP panel, and the first stage of commissioning is to establish that all lighting is under the control of the SIP panel. Each lighting unit is given a specific address, and lights are grouped according to location such as entrance, lighting, kitchens and bathrooms. The BMS sends a signal to the groups for trading and closed hours, and light levels are preset to appropriate levels for each location. When the store is closed, all lights automatically set to 50% for restocking, cleaning and maintenance.

Lighting in the rest of the store is dimmable. These lights are grouped and associated with the nearest pre-installed sensor and adjusted to a pre-agreed setting such as 650 lx using software setpoints and light meters, so their output will be controlled according to natural light levels. The sensors have PIR detection for future implementation.

The system includes a key-operated manual over-ride and automatic over-ride in case of power failure to the SIP panel.