Products - Facade Controller

By: Embedia  09-12-2011
Keywords: motor, shades, Switches

Dynamic Facade Controller

The Dynamic Facade controller consists of a pair of relays individually controlling two motor outputs. Each board is driven by an embedded microprocessor capable of independently calculating the best position for its devices, creating an intelligent network of individual controllers.

System Input – Each controller responds to input devices such as sensors, switches, and other peripherals.

Distributed Intelligence - Each facade controller is able to self manage its performance to meet the specific environmental conditions. This unique approach eliminates the need for a central computing system.

Communication - Solid communication is key in creating a reliable and efficient system. The BACnet protocol was selected creating a reliable network based on international ASHRAE standards.

Compatibility - The system was designed with customization in mind. Support for any motorized element can be easily added as the need arises.


The Dynamic Facade controller has programmable layers that can build upon the base functionality. Each system can be delivered with any number of the following:

Programmed Stops - The system stores up to 64 programmed stops for each motor anywhere along its range of movement.

Control Group – The system is capable of grouping motors that have common functionality.  Each group can contain any number or combination of motors.

Sun Tracking – The system is able to track the position of the sun in order to manage solar heat gain and remove glare from workstations. Each individual motor can be controlled independently in response to the orientation of the shade, varying light requirements of each space, and blockages from external elements.

Scheduling - In addition to positioning shades, schedules can be used to change most of the parameters of the system on a daily or weekly basis.

Glare Control Zones - The management of natural light in a space is accomplished using Glare Control Zones. These zones can be used to eliminate glare in a work environment or to protect light sensitive areas such as artwork from UV damage.

Environment Modeling - Creating a model of the building's surroundings allows shadowing effects to be considered by the glare control system.

Reporting - The system is capable of generating logs of actions including motor movement, sensor readings and user overrides. Any log files created by the system will be archived into a standard form that can be viewed in most spreadsheet applications.

User Overrides and Interfaces

Building occupants can be provided with the capability of overriding the automatic control of the system to suit their individual preferences. User overrides can include:

Switch Control - Individual shades or groups of shades can be controlled by wall mounted switches. Some supported types are:

  • Standard wall mounted double throw momentary switches
  • Keyed switches that restrict access
  • Multi-button switches that allow for scene control

Computer Based Control - The system can be supplied with a Graphical User Interface (GUI) that can be installed on a dedicated PC or Building Management System (BMS) computer, or accessed remotely via the internet. These interfaces allow users to monitor and override the system, as well as manage user accounts and privileges.

Interfacing with Building Systems - Dynamic Facade Controllers can interface with other building systems using any of the following methods:

  • BACnet MS/TP
  • RS 232 or 485
  • Dry contacts or contact closures

Handheld Control - Override of the system can be established through the use of handheld devices. Supported devices include PDAs, smart phones with internet capabilities, and infrared and radio frequency remote controls.

Keywords: motor, shades, Switches