Integrated Building Management - Lighting and shading

Lighting & Shading

Needs

After room conditioning (space heating, cooling, and ventilation), lighting is the second biggest contributor to the energy bill in commercial buildings. As such, it provides massive opportunities for savings. Modern lighting solutions go beyond just managing the light level: Adaptation of light color or light "color temperature" (i.e., warm or cold white) helps to perfectly adapt the lighting solution to the occupant's needs and moods or the room's design. In combination with an integrated strategy for smart blinds control, the saving potential increases disproportionately: Harvesting sunlight in the winter helps to save heating energy, while intelligent shading in the summer helps to save cooling energy.

The lighting and shading market is very heterogeneous, and different protocols are specialized to different applications. This requires an BMS platform which allows consistent integration of the different protocols (wired and wireless) and can be used to automatically manage the comfort and safety aspects of an integrated lighting and blind solution. In a market where 75% of the installed control systems go into existing rather than new buildings, it is essential to have a wireless solution for controlling lights and blinds which is targeted at retrofit applications.

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Solutions

With Honeywell EasyClickPro, CentraLine offers a specialized wireless solution to manage lights and blinds in retrofit scenarios and for new construction. The control units are designed for the easy replacement of conventional installations and can be placed into existing flush mounting boxes, reusing the existing cabling infrastructure to lights and shutter motors. In new construction, expensive cabling can be minimized, as no wires are required to connect the switches to the lighting system. The control units can take commands from wireless switches which operate independent of batteries or mains power. They can thus be installed where needed, without worrying about running expensive cables to them or replacing batteries. This provides extraordinary flexibility throughout the buildings lifetime. EasyClickPro devices are based on the EnOcean standard protocol and are designed for native integration with the CentraLine BMS system. Unlike similar EnOcean products, EasyClickPro supports advanced features for BMS integration, including:

  • The ability to override the local commands by the BMS strategy to, e.g., centrally switch lights or drive blinds to the desired position, thus saving energy and increasing safety (see "Insights"). The ability to feed back the current status (light level or blind position) to the BMS system for reliable visualization.
  • The ability to measure energy consumption directly in the lighting controller. This helps in understanding the energy flow in a building without installing additional metering devices.
  • The ability to track operating hours and automatically detect lamp failures to enable proactive maintenance and avoid building tenant disruption by broken lights.

In addition to its wireless lighting control offering, CentraLine provides a set of integrated room controllers that not only provide temperature control, but are also capable of managing lights and blinds. Solutions include the Excel 12 and INNCOM room management solutions.

Finally, CentraLine is capable of integrating different kinds of wired lighting solutions through the DALI or KNX protocols which dominate the EMEA markets. As an example, the HELVAR DALI lighting systems can be directly connected to CentraLine BMS through a native driver. Access to all information in the DALI ballasts (including light status and lamp failure) is thus possible for visualization purposes. Commanding the light status from the BMS as part of a central control strategy is also easily possible.

All CentraLine lighting solutions can be installed, commissioned, and operated independently from the BMS. This is essential for stand-alone commissioning and operation of the lighting control solution, and thus for the separation of responsibilities for different trades. The lighting will remain fully functional even if the BMS system is down, which is an advantage over combined systems where the lighting control runs inside BMS devices.

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Integrated Building Management - Lighting and shading

Products

WIRELESS LIGHTING/SHADING

EasyClickPro

Wireless and batteryless system for lighting, shutter and room temperature control, based on the market leading EnOcean standard. Energy efficient, maintenance free, extensive and flexible where use of space utilization changes.

WIRED ROOM CONTROL

Excel 12

Configurable room controller covering FCU and hydronic heating, chilled ceiling, and light and blind control. LONWORKS FTT-10A bus for integration with CentraLine plant controllers. Eubac-certified.

DALI LIGHTING CONTROLLERS

Helvar DigiDim905

Controller for DALI lighting systems with up to 64 Dali devices. Native TCP/IP connection to CentraLine BMS system

 

DALI LIGHTING CONTROLLERS

Helvar DigiDim910

Controller for DALI lighting systems with up to 128 Dali devices on 2 sub-nets. Native TCP/IP connection to CentraLine BMS system

DALI LIGHTING CONTROLLERS

Helvar Imagine920

Controller for DALI lighting systems with up to 128 Dali devices on 2 sub-nets. Support of up to 252 SDIM addresses and up to 512 DMX addresses (IN or OUT). Native TCP/IP connection to CentraLine BMS system

SMART INTEGRATION

HAWK

Smart integration platform, with BACnet (IP and MSTP) incl. B-BC certification, LONWORKS FTT-10A and IP), Modbus, M-BUS, DALI, KNX, Enocean, integration of CCTV, security and fire/smoke control.

Insights

Integration of lighting and blind controls with the CentraLine BMS system provides two advantages:

  1. Energy consumption can be minimized by actively managing blinds and lights as part of the temperature control solution.
  2. The safety of the building tenants can be increased by actively managing blinds and lights as part of the overall fire and smoke control application.

Minimizing energy consumption

Depending on factors like the room setpoint and the outside air temperature, rooms require either heating or cooling energy to maintain comfortable level. As thermal insulation measures continue to be enacted, solar gains play a central role in the energy balance sheet of buildings: Solar radiation passes through the windows into rooms, and when it hits surfaces such as the floor, walls, or furniture, it is converted into heat. In the summer, this could lead to "overheating" of rooms, even if the outside temperature is below the desired room temperature. Typically, cooling systems would kick-in to reduce the space temperature, but this is a costly undertaking. It is more energy-efficient to use automated shading to prevent excessive heating-up when it is not desired. This means closing the blinds automatically when the sun is shining and the room temperature is at or above the setpoint.

In the winter, the shades can help to "harvest" solar radiation to save heating energy: Opening the shades automatically on sunny days will use the natural heat from the sun for minimizing the energy consumption for heating.

Increased safety

In integrated CentraLine solutions, the BMS system is automatically informed about fire conditions. As a result, actions such as the following can be triggered automatically:

  • Sunblinds are opened and locked in the topmost position to allow easy access of the fire fighters to the building and possibly evacuation of people through windows.
  • Once a fire is detected, room lights can start to flash to help inform people about critical conditions in the building. Lights can then be switched on automatically so that the evacuation route can be more-easily found.
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