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POWER SAVINGS
THROUGH
LIGHTING
MANAGEMENT
Yann Boulic
0420 961 646
yann.boulic@hpmlegrand.com.au
“Putting a Stop to Energy Waste™”
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Legrand New Lighting
Management System
1) Switch Sensors
2) SCS Sensors and Room Controllers
“Putting a Stop to Energy Waste™”
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…towards sustainable
building solutions
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The energy dilemma in commercial buildings
÷
+
Irreversible
growth
of energy cost
x
Increase of power
consumption
by 2050
http://www.abareconomics.com/publications_html/climate/climate_07/technology.pdf
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Reduction of CO2
emissions to
avoid dramatic
climate changes
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Legrand Lighting Management
Switch Sensors
Switch sensor
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Legrand Lighting Management
Switch Sensors – Suitable for managing single or multiple areas
Advantages:
Simple and economical, easy to
install
Occupancy-mode and vacancymode available
Choice of sensor technology
(PIR, US & Dual Tech)
Daylight set point feature on
ceiling sensors
Programmable via remote
programming tool
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Legrand Lighting Management
Switch Sensor – How is it wired?
Normal push button (Bell press) for “Vacancy”
mode (Manual On / Auto Off) and manual override
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Legrand Lighting Management
SCS Sensors and Room Controllers types
SCS Sensors and
Room Controllers
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Legrand Lighting Management
SCS Sensors and Room Controllers – Suitable for managing single or
multiple floors
Advantages:
Maximum flexibility
Based on 2 wire Bus (SCS)
Occupancy and vacancy
operation modes
Choice of sensor technology
(PIR, US, Dual Tech)
Daylight set point feature on
ceiling sensors
Compatible with all dimming
technologies
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Legrand Lighting Management
SCS Sensors with Room Controllers: How do they work?
The SCS sensor(s) are connected to and powered by the Room
Controllers (no dedicated power supply required)
Room Controller automatically programs itself by recognising the
controls connected to the inputs (SCS Sensors and Switches)
The SCS sensors and room controllers do
not require configurators!
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Circuit 1
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Legrand Lighting Management
SCS Sensor with Room Controller: How are they wired?
Split loads
Luminaries
SCS Switch
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SCS Sensor
Luminaries
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Legrand Lighting Management
Wiring example 1: Setup of one SCS Sensor and Room Controller
Sensors are linked to the corresponding output
circuit
Circuit 1
SCS Sensor
NOTE:
No dedicated SCS
power supply required
for this configuration
SCS Sensor
SCS Bus
Cat 5 or 2-core cable
Up to 10 sensors
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240 Vac
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Legrand Lighting Management
Wiring example 2: Setup of one SCS Sensor and Room Controller
Sensors and a switch linked to circuit 1
Switch linked to circuit 2
Circuit 2
Circuit 1
SCS Sensor
240 Vac
NOTE:
No dedicated SCS
power supply required
for this configuration
SCS Sensor
SCS Bus
Cat 5 or 2-core cable
Up to 10 sensors
SCS Switch
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SCS Switch
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Legrand Lighting Management
Application example 1: Office - Room Controller with 4 x 0-10V outputs
for dimmable ballasts + SCS Switch
White board luminaries
Advantages:
Central luminaries
(Left)
Easy to install
Easy to configure
Easy to retorift
Easy to maintain
Energy efficient
Independent control
of circuits
Screen luminaries
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Central luminaries
(Right)
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Legrand Lighting Management
Application example 1: Office - Room Controller with 4 x 0-10V outputs
for dimmable ballasts + SCS Switch
Luminaries
SCS switch
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SCS Sensor
Luminaries
Luminaries
Luminaries
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Legrand Lighting Management
Application example 2: Two small offices - 2 zones Room Controller with
for 0-10V dimmable ballasts, SCS Switches, daylighting function
Advantages:
Easy to install
Easy to configure
Independent control
adjustment
Maximum energy
efficiency with
daylighting function
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Legrand Lighting Management
Application example 2: Two small offices - 2 zones Room Controller with
for 0-10V dimmable ballasts, SCS Switches, daylighting function
Luminaries
Luminaries
0-10Vdc control
240Vac control
Daylight
Two independent circuits
Using 2 x Relay ch room controller
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SCS Bus
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Legrand Lighting Management
Application example 3: Toilettes – Occupancy sensing, Room Controller
with sensor to control lights and exhaust fan
Advantages:
Control of lighting
and ventilation
Simple to configure
Typical application
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Legrand Lighting Management
Application example 3: Toilettes – Occupancy sensing, Room Controller
with sensor to control lights and exhaust fan
Fan
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Luminaries
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Legrand Lighting Management
Application example 4: Large office - Room Controller with 4 x 0-10V
dimmable ballasts (Or DALI) + SCS Sensors + SCS Switch
Advantages:
Can be used in
retrofit installations
Easy to configure
Maximum energy
efficiency with
daylighting
Zones managed
independently
All load type options
available
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Legrand Lighting Management
Application example 4: Large office - Room Controller with 4 x 0-10V
dimmable ballasts (Or DALI) + SCS Sensors + SCS Switch
Luminaries
Area 1
Area 1
Luminaries
Area 2
Area 2
Area 3
Area 4
4 Ch 0-10V
dimmer
Room Controller
Each Area
is managed
independently
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Luminaries
Area 3
Luminaries
Area 4
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Integration example: Integration of Room Controllers and sensors with
other SCS devices
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Building Example 400sq Office
Test case
Office size
Average Energy consumption per m2
Total energy consumption in office
Working weeks a year
Working hours a year
Total working hours a year
Total energy consumption in office
Total energy consumption in office per m2
Energy cost
Energy cost - total floor
Energy cost - total floor per m2
400
20
8,000
50
60
3,000
24,000
60
0.13
3,120
7.8
m
2
Watt/m
Watt
2
(Power density)
hours/year
KWh/year
2
KWh/year/m
$/KWh
$/year
2
$/year/m
Energy savings
Percentage of energy saving using PIRs
Potential energy saving using PIRs
Potential savings a year
25%
6000
780
as per EN15193 Standards
KWh/year
$/year
Business case - ROI
Average sensor cost
Average labour cost to install each sensor
Total number of sensors required
Total cost to replace sensors (investment)
2
Cost of investment per m
ROI
150
60
7
1470
3.7
1.9
$
$
CO2 emissions
State where the offices are located*
CO2 emissions reduction using sensors
CO2 emissions reduction using sensors per m2
CO2 emissions reduction equates to removing
NSW,ACT
5520
13.8
1.2
$
$
years
Select State
Kg of CO2/year
*CO2 emissions depend on the type of fuel used to generate electricity. (Australian Green House office)
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2
Kg of CO2/m /year
cars off the roads
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Thank you
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Additional
Technical
Information
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Legrand Lighting Management
Sensors Main functions
Operation mode
Occupancy based control (Automatic On/Off) or Vacancy based control (Manual On/Automatic Off)
Daylighting control
Control lights based on natural light
Time delay
Adjust time delay from seconds to hours
Sensitivity
Adjust sensitivity levels independently for each sensing technology
Walkthrough function
‘Smart’ delay time – shortens time delay if there is no detection after 20 seconds
Audible alerts
Alert users of impending light hut off
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Legrand Lighting Management
Occupancy based control
Automatic On/Off operation
Switching lighting On and Off in response to the
occupancy of a particular space
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Occupancy based control – “Auto”
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Vacancy-based control
Manual On / Automatic Off
Switching lighting Off in response to a space becoming
vacant
This strategy is the most
energy efficient according to
European Standard EN15193,
which can achieve up to 25%
energy saving
With this strategy, the user
become eco-responsible by
switching on or off the light
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Legrand Lighting Management
Vacancy-based control – “ECO”
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Legrand Lighting Management
Day-lighting control
Day-lighting control
Night
When I enter the room, I press the push button to
switch ON the lights
Day- light
The sensor will automatically switch OFF the lights if
natural light level is sufficient
Day-light
down
If I’m still in the room, the light will switch ON
automatically if the light level is insufficient
Low
brightness
I leave the room, press the push button to switch OFF or the
sensor will turn it OFF automatically after a short period
* adjustable
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Legrand Lighting Management
Daylighting – How it operates
Sensor in-built light level detector can be programmed to a specific
daylight threshold. Ie 500lux
This means that if natural light exceeds the daylight threshold, the
sensor will automatically turn artificial lights off (independently if there
is movement or not)
Dimming level is constantly monitored and managed by the sensor to
maintain a constant ambient light level
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Legrand Lighting Management
Sensors will turn the
light On or Off based
on the amount of
daylight measured by
the photocell
Inc reasing Daylight levels
In
Daylighting – On/Off Control
Deadband, is a control
margin below a fixed
setpoint in which
minute variations in
light levels will not
trigger an On or Off
Light On
response from the
controller. This prevents
lamp cycling
Sunlight
Off delay tim e begins
Daylight setpoint
Deadband
Off delay time
Occupanc y or time based
switch operation period
Energy saved
Photoc ell light level
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6pm
5pm
4pm
3pm
2pm
1pm
12pm
11am
10am
9am
8am
7am
6am
5am
Light Off
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Legrand Lighting Management
Sensors will dim the
light based
on the amount of
daylight measured by
the photocell
IInc reasing Daylight levels
Daylighting - Dimming
Sunlight
Daylight setpoint
Deadband
Occupanc y, time based or
manual switch operation period
Light On
Energy saved
Photoc ell light level
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6pm
5pm
4pm
3pm
2pm
1pm
12pm
11am
10am
9am
8am
7am
6am
5am
Light Off
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Day-lighting control
Example in an open space
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Other functions
Walkthrough function
This function provides extra energy savings by
switching the lights Off 3 minutes after an area
initially occupied, there is no motion detected
after the first 20 seconds
This function is programmable only with the
remote control
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LEGRAND Lighting Management
Other functions
Alerts
Visual (flashing light) and/or audible warning
before impending shutoff
A beep will sound 20 seconds and 10 seconds
before lights are turned off
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LEGRAND Lighting Management
Programming tools
One way communication remote
Two-way communication remote
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Accessories
Accessories
Light level sensors
Gateways (SCS-SCS, SCS-EIB, SCS-KNX)
Webserver
Software (Virtual configuration)
Connectors (RJ45 adaptor)
Cables, PS, Memory Module, etc
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Legrand Lighting Management
Programming Methods
Plug-and-Go
This method is used when plugging an SCS device to a room
controller and a default program is created automatically. If a
manual command (push button) is added also to the same input
then the room controller configures itself to a default vacancy
mode. (Manual On/Auto Off).
Arteor SCS Switch
240 VAC
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Legrand Lighting Management
Programming Methods
Plug-and-Go
Example: At initial installation, the room controller recognizes the
controls which are directly connected to the input and sets its
outputs accordingly
Output 2
Output 1
Arteor SCS Switch
PB2
PB1 – Linked to Sensor and Output 1
PB2 – Linked to Output 2
Arteor SCS Switch
PB1
240 VAC
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Legrand Lighting Management
Programming Methods
Push-and-Learn
If the automatic configuration (Plug-and-Go) is not adequate then
it is possible to use this method to modify the default program.
Example: For a sensor to control 2 outputs or more
Default program
Cat No 48841
240 VAC
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Add new Channel to default
program
So it controls two channels
with same sensor
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Functional design
Programming Methods
Push-and-Learn – Program a Sensor to control two outputs
Step 1- Press the sensor Learn button (or via the remote menu PnL Group - Learn).
‘Learn’ LED flashes once a second
Step 2- Press the sensor Learn button again (it will activate the current output and enter into
Push-and-Learn mode. (LED flashes twice a second in both Sensor and Controller)
Step 3 - On the room controller, press the local control button to signal
which output to be added to the sensor (new ‘link’)
Step 4 - Press the Sensor Learn button again and the new link is done.
240 VAC
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Thank you
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