Application Note
Fifth Light Partitioning
Contents
Contents
1Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2Definitions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
3 ASHRAE and IECC Lighting Control Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
4 Fifth Light’s Partitioning Feature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
5 Partition Status Detection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
5.1 Automatic Partition Status Detection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
5.2 Manual Partition Detection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
6 Designing a Partitioned Space . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
7 Configuring a Partitioned Area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
7.1 Creating a Partitioned Area. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
7.2 Creating a sub-area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
7.3 Creating partition sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
7.4 Associating sub-areas to a partitioned sensor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
7.5 Associating Occupancy Groups. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
7.6 Associating Wallstations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
7.7Example. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
8 Design Considerations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
8.1Schedule. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
8.2 Daylight harvesting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
8.3 High and Normal Priority Commands. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
8.4 Emergency Signals. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
8.5 Fire Alarm. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
8.6 Cross Panel Communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
8.7 System Failure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
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1 – Overview
1 – Overview
Many facilities have spaces that can be partitioned into
smaller spaces to accommodate various activities using
partition walls. These spaces include hotels’ ballrooms,
school gymnasiums and conference rooms. Users expect
their lighting control system to adapt based on the position
of the partition walls.
This application note explains how Fifth Light’s partitioning
feature allows users to create tailored control strategies
based on the configuration of a space.
2 – Definitions
End Device – A controllable lighting device that can be
associated to a Fifth Light workpoint.
Partitioned Area – An area that can be partitioned into
multiple sub-areas using partitions/room dividers.
Partition Sensor – A sensor that translates whether a room
divider/partition is closed or open. The space is partitioned
into multiple sub areas if the partition sensor is sending a
closed (1) signal. Adjacent sub areas are joined into a single
area if the partition sensor is sending an open (0) signal.
Partition Wall – A partition wall is a wall that separates
rooms, or divides a room. Wall partitions are often
constructed using beads and tracking that is either hung
from the ceiling or fixed into the ground. The panels are
inserted into the tracking and fixed. Some wall partition
variations specify their fire resistance and acoustic
performance rating
3 – ASHRAE and IECC Lighting Control
Requirements
ASHRAE and IECC both require spaces surrounded by
ceiling height partitions to have an individual manual control
(switches/dimmers). The control must be within the space
or remote located with an indicator that identifies the space/
area it serves. Exemptions to this requirement are for areas
that must be continuously illuminated for safety/security and
corridors or stairways used for means of egress.
In addition, light reduction is required. ASHRAE 90.1 Section
9.4.1.2a requires a control step between 30% and 70%,
which can be accomplished with a number of variations
such as switching alternating lamp, dimming ballast/driver,
or stepped ballast/driver. IECC-2012 Section C405.2.1.2
requires a control step of 50% with even illumination in
the space and offers specific ways to accomplish this by
controlling all lamps or luminaries such as dual switching
alternate rows of luminaries, alternate luminaries, switching
the middle lamp luminaries independently of the outer
lamps or switching each luminaire or each lamp.
Finally, ASHRAE 90.1 Section 9.4.1 and IECC Section
C405.2.2 require automatic controls for interior lighting.
Automatic time control and occupancy based (occupancy
sensors) are methods that can be used to comply. ASHRAE
90.1 requires that any automatic control device for building
interiors be either manual-on or controlled to automatically
turn on to not more than 50%.
This signifies that each sub-area of partitioned area will
have a manual control and an occupancy sensor that would
behave differently depending on the configuration of the
space, i.e. one area or multiple sub-areas.
Sub-area – Smallest area within a partitioned area created
using partitions/room dividers.
Workpoint – A Fifth Light LMS object that allows a user to
group end devices.
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4 – Fifth Light’s Partitioning Feature
4 – Fifth Light’s Partitioning Feature
The Fifth Light system partitioning feature allows users
to define different control strategies based on the room’s
configuration and use. The user can define up to four (4)
sub-areas per partitioned area with specify specific control
strategy for each sub-area. When sub-areas are joined the
system automatically adjusts the control strategy for the
space composed of joined sub-areas. When the same space
is separated by movable partitions, the lighting controls only
affect the lights in their specific room.
The following picture illustrates some of the 16 different
combinations possible with three partitioning walls.
Figure 1. Partitioned Area with three room dividers
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4 – Fifth Light’s Partitioning Feature
The following picture illustrates some of the various
partitioning options available with a single space with three
partitioning walls in a cross like layout.
Figure 2. Partitioned Area with three room dividers in a
cross layout
The Fifth Light’s Lighting Management Software Partition
feature allows user to define multiple up to sub-areas (4)
within an area.
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5 – Partition Status Detection
5 – Partition Status Detection
The EXPS-15V is to be used to power up four sets of IRTR
devices when used in this configuration
●●
Manual partition status indication using low voltage
latching switches
0V
Automatic partition status detection using infrared
partition sensors
To KL1154 Digital Input Card
●●
24V
Eaton offers two means to detect the status of the
partitions:
Brown (+)
Blue (–)
Eaton’s Infrared Transmitter and Receiver, IRTR, is used to
automatically detect the presence or absence of partitions
such that lighting functions change to accommodate the
space’s configuration. Mounted on the ceiling, the IRTR
uses an invisible infrared light beam to sense whether a
partition is opened or closed. The IRTR provides a digital
signal (maintained contact) to the Fifth Light system via the
digital input card located in the Lighting Control Panel. The
digital input card must be KL1154 which have input filters of
different speeds. The Fifth Light system then automatically
modifies the operations of the wallstations and occupancy
sensors within the space.
Brown (+)
5.1 – Automatic Partition Status Detection
IRTR
Transmitter
Black (Signal)
IRTR
Receiver
Figure 4. IRTR Wiring
The below pictures illustrates a typical wiring termination of
a digital signal within the lighting control panel.
Closure or Signal Wire
+V Wire
Figure 3. IRTR
0V or DC GND Wire
The IRTR is powered by the 24VDC power supply available
in the LCP. Please refer to the LCP and IRTR specification
sheet to learn more about the product’s specification.
The below diagram illustrates how the IRTR wiring diagram
and how it sends its signal to the Fifth Light System. Note
that the signal from the partition sensor can be connected
to any Lighting Control Panel within the system.
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Figure 5. Digital Input Wiring termination within the
Lighting Control Panel
6 – Designing a Partitioned Space
5.2 – Manual Partition Detection
Manual low voltage switches can be used to indicate cost
effectively the status of a partition wall. The low voltage
switch needs to be a latching switch (maintained contact)
with a single button. The manual partition detection requires
users to press on the button every time the partition wall
is closed or opened. The Fifth Light system uses the signal
received from the wallstation to automatically modify the
operations of the wallstations and occupancy sensors within
the space.
6 – Designing a Partitioned Space
The Fifth Light system automatically modifies the response
of a given switch (DALI Wallstation or Low Voltage switch)
and occupancy sensor depending on the position of the
partition wall.
When the partitioning wall is closed, the separate rooms,
also referred to as sub-areas, will function independently.
Each sub-area should have dedicated wallstation(s) and
motion sensor(s). The wallstation and motion sensor will
control only the lighting in their respective sub-area when
the partitioning walls are closed.
With the partitioning wall open, the two sub-areas must
act as one. The multiple wall stations shall act as one,
sharing control of the various DALI lighting groups. The
multiple motions sensors also act as one, i.e. if all sensors
in the area detect vacancy then the lights located in the
linked sub-areas will turn off. If one of the sensors detects
occupancy then the lights located in the linked sub-areas
will turn on and go to the specified Occupied Level.
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7 – Configuring a Partitioned Area
7 – Configuring a Partitioned Area
The following steps need to be followed to configure a
partitioned area:
1. Create a partitioned area workpoint
2. Create sub-areas workpoints
3. Associate a partitioning sensor to two sub-areas
7.1 – Creating a Partitioned Area
7.2 – Creating a sub-area
The following steps allow the facility manager to create sub
area:
1. Open the LMS application.
2. Select the Workpoints module.
3. Select the “Workpoints” tab.
4. Click the “+” button to add a new workpoint
5. Select “Sub Area” as the category.
To create a partitioned area:
6. Provide a display name for the sub-area
1. Open the LMS application.
7. Apply a level you wish to use for activation.
2. Select the Workpoints module.
8. Click “OK” to save your sub area.
3. Select the “Workpoints” tab.
9. Using the left hand unit selector or floor plan, user can
then associate end devices to selected “workpoint”.
4. Click the “+” button to create a new workpoint.
5. Select “Partitioned Area” as the category
6. Provide a name for the Partitioned Area
7. Provide a Display Name for the Partitioned Area
8. Set the Activation Level
9. Click “OK” to save the Partitioned Area.
10. Using the unit select or floor plan, the user can then
associate end devices to the Partitioned Area.
Figure 7. Creating a Sub-Area
Design considerations:
1. All units belonging to the sub area need to be
associated with the parent partitioned area to be
considered part of the partitioned area
2. A unit can be associated to only one sub-area
Figure 6. Creating a Partitioned Area
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7 – Configuring a Partitioned Area
7.3 – Creating partition sensors
The following steps allow the facility manager to create
partition sensors.
1. Open the LMS application.
2. Select the System Setup module.
3. Select the “System Setup” tab.
4. Select the “Peripheral” selector to expand the
selection.
5. Click “+” button to add a partitioned sensor.
6. Specify the appropriate location for the device.
7. Select “IRTR” as the device type.
8. Assign the appropriate X, and Y positions.
9. Specify the Terminal and Terminal Channel number the
IRTR is connected to inside the LCP
10. Click “Apply” to save the changes.
11. The sensor should now be viewable on the floor plan
when it gets loaded
Figure 8. Creating a partitioned Sensor
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7 – Configuring a Partitioned Area
7.4 – Associating sub-areas to a partitioned sensor
7.5 – Associating Occupancy Groups
The following provides an overview of how a user can
associate a sub-area to a partitioned sensor.
Refer to the LMS Users Guide on how to associate an
occupancy sensor to an area and the fixtures installed in the
area.
1. Open the LMS application.
2. Click “Load Floor Plan” from any modules.
3. Select the floor with the partitioned sensor(s).
4. Select the partitioned sensor.
5. Hold the shift button and select the Units that you
would like to associate with the partitioned sensors.
The selected devices will be highlighted.
6. Once all devices have been selected, right click to bring
up custom menu.
Important note:
1. The group name must have a name appended with
“#suffix” if the group is to be operated as one
area composed of two or more sub-areas when
the partition wall is open. The suffix is an identifier
used to group sub-areas together when the wall is
open.
2. If the zone names do not have the “#suffix”
they will not be controlled as one area when the
partition wall is open.
7. Select “Assign To Partition Sensor”.
8. The sensor is now associated with the selected subareas.
Notes:
1. A minimum of 2 sub-areas is required to associate
to a partitioned sensor. If the partitioned sensor
already has 2 or more sub-areas the user can
associate one sub-area at a time.
2. Also the entire sub-area does not need to be
selected, meaning one unit from a sub area is all
that is required.
7.6 – Associating Wallstations
The wallstation profiles will be configured for each subarea. The sub-area names will indicate how the wallstations
should act when the partition walls are open. Refer to the
LMS Users Guide on how to configure wallstations to
control group of fixtures.
Important note:
1. The group name must have a name appended with
“#suffix” if the group is to be operated as one
area composed of two or more sub-areas when
the partition wall is open. The suffix is an identifier
used to group sub-areas together when the wall is
open.
2. If the zone names do not have the “#suffix”
they will not be controlled as one area when the
partition wall is open.
Figure 9. Associating a sub-area to a partition sensor
NNote: If connection is lost to the sensor (failed device or
loss of communication), the sensor is defaulted to
open, and the sub-areas are joined.
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7 – Configuring a Partitioned Area
7.7 – Example
Figure 10 illustrates a partitioned area with two partition
walls and three sub-areas. The wallstations will be
controlling three zones while the occupancy sensors will
be turning all lights on or off based occupancy within the
space.
Figure 10. Ballroom with two partition walls closed
Figure 11 illustrates the zones when the partition walls are
open and how the zones.The system uses the workpoints’
suffix to combine them together.
Figure 11. Ballroom with the two partition walls open
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8 – Design Considerations
8 – Design Considerations
8.5 – Fire Alarm
The fire alarm signal will ignore sub-areas and partition
status.
8.1 – Schedule
The schedule is not affected by partition status.
8.6 – Cross Panel Communication
8.2
The IRTR signal is broadcast to other panels, i.e. the IRTR
signal can be sent to the LCPA panel and be used to control
the lighting devices connected to LCPB.
Daylight harvesting
The daylight harvesting is not affected by partition status.
As part of the configuration the user should ensure that
only lights that are being affected by daylight regardless of
the area’s configuration will be associated to the daylight
sensor.
8.3 – High and Normal Priority Commands
High and normal priority commands will ignore sub-areas
and partition status.
8.7 – System Failure
In case of a sensor failure, all groups associated to the
occupancy failure will go to system failure level, i.e. when
the space is a single partitioned area then all devices will
go to system failure level, when the space is a sub-area
then only the devices within the sub-area will go to system
failure level. If the partition wall status changes then the
system failure level will be applied to all devices.
8.4 – Emergency Signals
The emergency signal will ignore sub-areas and partition
status.
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United States
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Lighting systems
203 Cooper Circle
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© 2015 Eaton
All Rights Reserved
Publication No. AP503007EN
September 2015
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