Specifications

Crestron Commercial Lighting Design Guide
2 Doc. 4775B | Crestron.com
System Architecture
Crestron Green Light systems are available in a variety of configurations. Factors such as construction type, client
requirements, and architectural restrictions determine the best configuration. Lighting system architectures
include centralized, distributed, and hybrid.
At the heart of each Green Light system is one or more control processors. This control system takes in user
button presses or other external events and turns them into single commands or even sequences of commands;
dimming lights and closing shades can occur with just one button press or occupancy sense. In addition to
controlling lighting, fans, motors, HVAC, and security, the control system can connect to building systems via
Ethernet, RS-232, BACnet, Lonworks, and others.
Centralized Architecture
Product Families: Architectural Dimming, Power Switching, Green Light Express
®
• High-voltage wiring home-runs from many rooms to a central Crestron panel
• Lights are controlled with keypads and touch screens located anywhere
In a centralized system all the high-voltage lighting, motor, fan, and switch circuits draw power directly from
modules in a Crestron Green Light enclosure. Wired or wireless user interfaces can be placed throughout the
building to control the various circuits. A centralized design simplifies the high-voltage wiring through a “home-run”
infrastructure where each lighting circuit is connected directly to the module within the Crestron enclosure.
The major benefit of a centralized architecture is the ability to program the user interfaces to control any load
connected to the system. This differs from traditional distributed infrastructure whereby each circuit is controlled
locally via the in-wall dimmer or switch. Enabling load control through programming allows for multi-point control
as well as the ability to change how the system functions through future updates. In addition to reducing wall
clutter, multiple circuits can be controlled via a single button press, simply recalling presets for different room
configurations, events or atmospheres.
Centralized systems are appropriate for applications such as lobbies, hallways, parking garages, stadiums, and
auditoriums.