Load control system providing manual override of an energy savings mode
First Claim
1. A load control system for a building having a lighting load located in a space of the building, a heating and cooling system, and a window located in the space of the building, the load control system comprising:
- a lighting control device configured to control the amount of power delivered to the lighting load;
a daylight control device configured to control the amount of natural light to be admitted into the space through the window;
an occupancy sensor configured to detect whether the space is occupied or unoccupied; and
an input control device comprising an actuator and configured to transmit a digital message to at least one of the lighting control device and the daylight control device in response to a manual actuation of the actuator;
wherein the lighting control device and the daylight control device are configured to operate in an energy-savings mode so as to reduce a total power consumption of the lighting load and the heating and cooling system, the energy-savings mode being manually overridden in response to actuation of the actuator of the input control device to cause the load control system to enter a manual mode in which at least one of the amount of power delivered to the lighting load and the amount of natural light admitted into the space through the window may be manually adjusted; and
wherein the lighting control device and the daylight control device are configured to return to the energy-savings mode in response to the occupancy sensor detecting that the space is unoccupied.
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Accused Products
Abstract
A load control system for a building having a lighting load, a window, and a heating and cooling system comprises a lighting control device, a daylight control device, and a temperature control device operable to be controlled so as to decrease a total power consumption of the load control system in an energy-savings mode. The energy-savings mode can be manually overridden in response to actuation of the actuator of an input control device, such that the load control system enters a manual mode for manually adjusting the loads controlled by the lighting control device, the daylight control device, and the temperature control device. The load control system is operable to automatically return to the energy-savings mode at a time after the load control system entered the manual mode.
113 Citations
16 Claims
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1. A load control system for a building having a lighting load located in a space of the building, a heating and cooling system, and a window located in the space of the building, the load control system comprising:
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a lighting control device configured to control the amount of power delivered to the lighting load; a daylight control device configured to control the amount of natural light to be admitted into the space through the window; an occupancy sensor configured to detect whether the space is occupied or unoccupied; and an input control device comprising an actuator and configured to transmit a digital message to at least one of the lighting control device and the daylight control device in response to a manual actuation of the actuator; wherein the lighting control device and the daylight control device are configured to operate in an energy-savings mode so as to reduce a total power consumption of the lighting load and the heating and cooling system, the energy-savings mode being manually overridden in response to actuation of the actuator of the input control device to cause the load control system to enter a manual mode in which at least one of the amount of power delivered to the lighting load and the amount of natural light admitted into the space through the window may be manually adjusted; and wherein the lighting control device and the daylight control device are configured to return to the energy-savings mode in response to the occupancy sensor detecting that the space is unoccupied. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method of controlling a load control system for a building having a lighting load located in a space of the building, a heating and cooling system, and a window located in the space of the building, the method comprising:
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controlling the amount of power delivered to the lighting load; controlling the amount of natural light to be admitted into the space through the window; operating the load control system in an energy-savings mode; decreasing the amount of power delivered to the lighting load when operating in the energy-savings mode; controlling the amount of natural light admitted into the space through the window so as to decrease the power consumption of the lighting load and the heating and cooling system when operating in the energy-savings mode; in response to an actuation of an actuator, entering a manual mode in which at least one of the amount of power delivered to the lighting load and the amount of natural light admitted into the space through the window may be manually adjusted; detecting whether the space is occupied or unoccupied; and returning to the energy-savings mode in response to a determination that the space is unoccupied. - View Dependent Claims (16)
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Specification