SIMPLE AUTOMATIC ENERGY EFFICIENCY (SAEE)
APPLICATION DESIGN NOTES:
STAND-ALONE SMART ADC LED TROFFER
OVERVIEW
ALR Smart LED Troffers offers three major lighting control solutions for Simple Automatic Energy
Efficiency (SAEE) applications. A stand-alone Smart LED Troffer can be configured with an ALR PnP Smart
Occupant Sensing Device (OSD) sensor, an ALR PnP Smart Automatic Daylight Control (ADC) sensor, or
both sensors for automatically energy saving in response to the changes of environment.
SMART ADC LED TROFFER
An ALR Smart ADC LED Troffer is an ALR Smart LED Troffer configured with a PnP Smart ADC module
which is a self-contained lighting control device capable of performing automatic daylight control
functions and is fully compliant to California Title 20 and Title 24.
The Smart ADC LED Troffer shall automatically monitor ambient light level of the illuminated area and
maintain the area with a constant “average (mean) luminance of the illuminated surface” (AL). The
desired (or configured) AL value can be configured via the MAX keys of the CONTROL KEYPAD (see PnP
SMART ADC SENSOR MODULE and PnP CONTROL KEYPAD pages for more information.)
The real-time AL of the illuminated area is measured in FOOT CANDLE (fc). The ALR Smart ADC Sensor
automatically retrieves the real-time AL values from the illuminated area, compares with the desired
(configured) AL value, and performs necessary luminance compensation to achieve a constant AL for the
entire illuminated area.
SAEE APPLICATIONS FOR STAND-ALONE SMART ADC LED TROFFER
Compared with traditional energy saving control approaches, ALR’s automatic energy efficiency solutions
are simple to design, implement, install, operate, modify, maintain, upgrade, and integrate.
Design Principles for ALR Stand-alone Smart ADC LED Troffers in Daylight Areas
The simple design principles of stand-alone Smart ADC LED Troffers for daylight areas described in this
section are for references only. It may vary by differences in designers, lighting software packages, or
characteristics of sites.
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Define the Daylight Areas;
Define the luminaire locations;
Define the Device Addresses (Floor, Room, Section/Group, Fixture);
Run the simulation software;
Check if the luminance requirement (desired AL) for each illuminated area is satisfied;
Add or reduce number of luminaires as necessary;
Set the desired AL value for each luminaire;
Principles for ALR Smart ADC LED Troffer Setups & Installation
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Set the Device Address according to the design;
Set the desired AL value via MAX keys of the Control Keypad according to the design;
Set the time interval via CYCLE key of the Control Keypad according to the design;
Install the Troffers according to the Device Addresses specified in the design.
A California Based LED Lighting Fixtures & Control Company
San Jose CA
www.alrled.com
APPLYING STAND-ALONE SMART ADC LED TROFFERS FOR TITLE 24
SECTION 130.1 pp 140
(a) Area Controls.
(b) Multi-Level Lighting Controls. The general lighting of any enclosed area 100 square feet or
larger, with a connected lighting load that exceeds 0.5 watts per square foot.
(d) Automatic Daylighting Controls.
2. Luminaires providing general lighting that are in or are partially in the Skylit Daylit Zones or the
Primary Sidelit Daylit Zones shall be controlled independently by fully functional automatic
daylighting controls.
B. Luminaires in the Skylit Daylit Zone shall be controlled separately from those in
the Primary Sidelit Daylit Zones.
C.
Luminaires that fall in both a Skylit and Primary Sidelit Daylit Zone shall be
controlled as part of the Skylit Daylit Zone.
D. Automatic Daylighting Control Installation and Operation. For luminaires in
daylight zones, automatic daylighting controls shall be installed and configured to
operate according to all of the following requirements:
i.
Photosensors shall be located so that they are not readily accessible to unauthorized
personnel, and the location where calibration adjustments are made to automatic
daylighting controls shall not be readily accessible to unauthorized personnel.
ii.
Automatic daylighting controls shall provide functional multilevel lighting
having at least the number of control steps specified in TABLE 130.1-A.
iii. For each space, the combined illuminance from the controlled lighting and
daylight shall not be less than the illuminance from controlled lighting when no
daylight is available.
iv. In areas served by lighting that is daylight controlled, when the illuminance
received from the daylight is greater than 150 percent of the design illuminance
received from the general lighting system at full power, the general lighting power
in that daylight zone shall be reduced by a minimum of 65 percent.
3.
Parking Garage Daylighting Requirements. In a parking garage area with a combined total of
36 square feet or more of glazing or opening, luminaires providing general lighting that are in
the combined primary and secondary sidelit daylit zones shall be controlled independently by
automatic daylighting controls
B. Automatic Daylighting Control Installation and Operation. Automatic daylighting
control shall be installed and configured to operate according to all of the following
requirements:
i.
Automatic daylighting controls shall have photosensors that are located so that they
are not readily accessible to unauthorized personnel, and the location where
calibration adjustments are made to the automatic daylighting controls shall not be
readily accessible to unauthorized personnel.
ii.
Automatic daylighting controls shall be multilevel, continuous dimming or ON/OFF.
iii. The combined illuminance from the controlled lighting and daylight shall not
be less than the illuminance from controlled lighting when no daylight is
available.
A California Based LED Lighting Fixtures & Control Company
San Jose CA
www.alrled.com
iv. When primary sidelit zones receive illuminance levels greater than 150 percent of
the illuminance provided by the controlled lighting when no daylight is available,
the controlled lighting power consumption shall be zero.
TABLE 130.1-A MULTI-LEVEL LIGHTING CONTROLS AND UNIFORMITY REQUIREMENTS
Luminaire
Type
LED luminaires and LED source systems
Minimum Required
Control Steps
(
t f f ll
Uniform level of illuminance
shall be achieved by:
Continuous dimming 10-100 percent
A California Based LED Lighting Fixtures & Control Company
San Jose CA
www.alrled.com