C.P. Electronics EBDHS-KNX User manual

Overview
The EBDHS-KNX PIR (passive infrared) presence detector
provides automatic control of lighting loads with optional
manual control. The EBDHS-KNX is a high sensitivity PIR
detector suitable for high bay applications, such as
warehouses and factories, and where high detection
sensitivity is needed. The device is designed to be part of a
KNX system.
Features include.
 Two switch inputs to manually override the dimming
levels and / or override the lights on or off.
 KNX programming mode accessible with IR handset
and also by using the push switch on the back of the
unit.
 Programmable logic block. This allows conditions to
be set. For example: send the occupancy telegram
only if the switch is pressed and the lux is low.
 Full scene selection functionality selectable via the
IR handset (UHS7 ), eg: scene, on, off, raise and
lower .
All functionality is fully programmable using the KNX ETS
commissioning software.
Features
Back features
Ceiling PIR HS presence detector –KNX
EBDHS-KNX
Product Guide
Retaining Spring
Retaining Spring
Switch Input
Connector
KNX
Communication
LED
KNX
Connector
PIR Sensor
Detects movement within the unit’s detection range,
allowing load control in response to changes in occupancy.
IR Receiver
Receives control and programming commands from an
IR (infrared) handset.
Light Level Sensor
Measures the overall light level in the detection area
Status LEDs
The LED flashes Red to indicate the following:
KNX Programming LED
The LED lights when the device is placed in programming
mode via the button or IR remote. In programming mode,
the Status LED will mimic the programming LED (i.e. will be
on for the duration of programming mode).
KNX Programming Mode Button
Press to signal to the KNX network to enable the system to
discover the device. This can also be done via IR.
Switch Input Connector
Two inputs can be used to perform several configurable
functions, for example, dim up / down, scene recall and
also contribute to logic functions.
Walk Test LED active when movement is detected
Valid IR setting received
Front features
Sensor Lens
which covers...
PIR Sensor
IR Receiver
Light Level Sensor
Status LEDs
Mounting Bezel
KNX
Program
Button

2
Detection diagrams
Range
Detection pattern Walk across
Maximum mounting height 20m
Walk towards
Height Range Diameter
15m 30m
10m 20m
6m 12m
3m 8m
Height Range Diameter
15m 40m
10m 26m
6m 16m
3m 9m
Alignment marks
The sensor head
has 4 alignment
marks. These
correspond to the
4 outer passive
infrared sensors
under the lens.
Use these marks
to align with aisles
and corridors to
ensure the best
detection
characteristics.
See example
overleaf.

3
Masking
The EBDHS-DD includes two clip-on masking shields to allow for precise masking of the detection shape.
The masks can be easily shaped to produce detection patterns suitable for applications such as aisles and corners and
for narrowing the detection diameter.
Radial tear pattern for
narrowing the detection
diameter
Lateral tear pattern for
making a ‘slot’ style
detection shape
Applications
Aisles
Masking shields trimmed for aisle shaped detection
Narrow detection
Masking shields trimmed for a narrow beam of detection
1 2 3 4 4 3 2 1
Slot
number
Masking shield
% coverage
1 45%
2 32%
3 22%
4 11%
Slot number
2 3 4
Diameter
number
Masking shield
% coverage
1 89%
2 63%
3 45%
4 32%
5 22%
5 5 4 3 2 1Diameter number 1
Example
Mounting height 6m
Trimmed to slots 2
Aisle detection width 16m x 32% = 5.1m walk across
12m x 32% = 3.8m walk towards
Example
Mounting height 15m
Trimmed to diameter 3
Detection diameter 40m x 45% = 18m walk across
30m x 45% = 13.5m walk towards
Align trimmed shields with sensor head
alignment marks and aisle.

4
The EBDHS-DD is designed to be mounted using either:
 Flush fixing, or
 Surface fixing, using the optional Surface Mounting Box (part no. DBB).
Both methods are illustrated below.
Use the supplied gasket to ensure IP rating (not compatible with Surface Mounting Box part no. DBB).
Assembly
Remove connector
cover
1 2
Push-in sensor
head connector to
mating socket on
power supply unit.
Locate sensor head
onto power supply
and clockwise rotate
until locked.
The EBDHS-DD may be
supplied in two parts.
Follow the instructions
to assemble.
Installation
Safety note
EBDHS-DD
EBDHS-PSU-DD
EBDHS-PSUHR-DD
Only apply power when
the sensor head has
been locked into
position onto power
supply.
Flush Fixing
Surface Fixing
1 2 3
2 3 4 1
Hole Ø64mm
Warning - be careful
bending springs when
mounting unit.
4
Pull out spring tab and rotate
spring arm as shown
50mm or 60mm fixing centres
Choosing a Suitable Location
The EBDHS-DD is designed to be ceiling mounted and must satisfy the following criteria:
 Avoid positioning the unit where direct sunlight may enter the sensor element.
 Do not site the sensor within 1m of any lighting, forced air heating or ventilation.
 Do not fix the sensor to an unstable or vibrating surface.

5
 UHS5 Programming IR Handset. See below for programmable functions.
 UHS7 User IR Handset. This handset can be used for selecting scenes, on, off, raise
and lower. See user guide for full programming details.
For most basic programming operations the UHS5 handset can be used and the following procedures
are based on using this device.
Point the handset at the Sensor and send the required programming commands to the unit as shown
below.
Valid commands will be indicated by a red LED flash. See page 1 for details of other LED responses.
Note: other functions on the UHS5 which are not shown below are not applicable to this product.
IR operation
Parameter
Name
Default
Value
0123UHS5 Handset
Graphics
Description
Button Activation
On / Raise On Raise Turn lights on or to raise lights.
Off / Lower Off Lower Turn lights off or to lower lights.
Walk test Off On Off When set to On this causes a red LED to flash on the sensor when
it detects movement. Use this feature to check for adequate
sensitivity levels. Note. Will be cancelled by ETS or a power cycle.
KNX
Programming
Mode
Selects
mode
De-
selects
mode
Press to signal to the KNX network to enable the system to
discover the device.
Note. The programming mode is cancelled automatically when ETS
finishes programming the device.
Number of Shift key presses
SHIFT 1 SHIFT 2 SHIFT 1 SHIFT 2SHIFT 1 SHIFT 2SHIFT 1 SHIFT 2
Wiring diagram
Fault finding
Switch inputs
Note: low voltage only
Device will not enter programming mode
 Check the KNX connections and that the bus segment is powered. The bus voltage should be approximately 30V.
 Check that the programming LED illuminates when the button is pressed on the rear of the unit.
What if the lighting does not turn ON?
 Check that the unit has been correctly added to the KNX system.
 Check that the sensitivity has been correctly set via ETS.
 Check any logic functions carefully for intended operation.
 If using the constant brightness controller, check that the light level measured by the sensor is lower than the
required threshold.
 If the detection range is smaller than expected, check the diagram on page 2. Rotating the sensor slightly may
improve the detection range.
HINT: The Walk Test LED function can be used to check that the unit is detecting movement in the required area.
What if the lighting does not turn OFF?
 Check any logic functions carefully for intended operation.
 If using the constant brightness controller, check that the light level measured by the sensor is lower than the
required threshold.
 Ensure that the area is left unoccupied for longer than the Time Out Period.
 Ensure that the sensor is not adjacent to circulating air, heaters or lamps.

6
KNX function and configuration
Introduction
A presence detector monitors the detection zone for occupancy, and causes one or more actions to be executed when a
person enters the detection area. In their simplest form, presence detectors could be used to turn on a light when a
person enters a room, and to turn it off again after the person leaves.
This range of presence detectors use the same basic infra-red or microwave detection technology, but make use of the
KNX system to communicate with other devices. The KNX standard defines how devices should communicate with each
other, allowing systems to be constructed using components from many different manufacturers. The standard also
guarantees that a presence detector from one manufacturer will effectively control a lighting dimmer or HVAC system
from another.
Central to the KNX system is the ETS configuration tool. This Windows application allows an installer to configure all
functions of each individual device in the system, and also how triggers and data are passed between different devices.
For instance, the tool can be used to set the sensitivity of the presence detector, and can be associated with a particular
lighting on-off channel. When someone walks into the room, the light will be turned on, and turned off after a
configurable delay. The tool maintains a configuration database for the entire system, and downloads this configuration
to each system element.
Functional Description
The presence detector consists of a infra-red detector element, reflected light sensor and two volt-free switch inputs. The
KNX application has been designed to offer the installer a variety of useful functions such as movement detection,
constant brightness control, lighting scene recall via infra-red handset and simple transmission of input states. Three
ETS-configurable logic controllers allow the installer to fine-tune the behaviour of the detector in response to sensor
state, switch inputs and KNX group objects offering a level of control that would normally require an external logic block.
The various functions are grouped in ETS as follows:
 General settings
Basic settings such as walk test LED enable/disable, sensor sensitivity, movement timeout and light sensor
calibration.
 Basic movement detection
Raw switch output from the movement detector, suitable for signalling security systems etc.
 Switch inputs
Defines the behaviour when each of the switch inputs change state, e.g. dimming, switching or scene recall.
Switch inputs may also be used as inputs to the three logic controllers.
 Infra-red scene control
Defines which KNX scenes are mapped to the scene recall button on the UHS7 remote control, and how the on/
off buttons should behave.
 Logic controller 1/2 (switch/scene)
Defines a custom logic function using simple drop-down boxes to send either switch or scene recall telegrams in
response to the state of various inputs, sensor state and KNX group objects.
 Logic controller 3 (brightness)
Defines a custom logic function using simple drop-down boxes to determine a brightness target value that should
be maintained. The logic function may use various inputs, sensor state and KNX group objects to determine which
brightness target should be active.
For larger rooms, several Presence Detectors can be used to increase the coverage area. In this configuration, one presence
detector acts as the master, and all other detectors act as slaves. When movement is detected by any of the slave detectors, a
telegram is sent to the master via the KNX bus. The master detector uses this information as part of a logic expression to send
dimming, scene recall or brightness commands to the controlled device. The movement timeout period is defined on the
master device; slave devices simply need to send a telegram whenever movement is sensed.

7
KNX function and configuration
Configuration
Configuration of the presence detector and associated logic functions is via the ETS tool, available from the KNX
association. Start the process by downloading the device catalogue from the www.cpelectronics.co.uk and importing it
into ETS. Once imported, the device can be added to a project and assigned an individual address in the normal way.
The detector is configured via the Parameters tab, and all options are grouped by function as previously described.
Group objects will be automatically enabled and disabled based on the chosen parameters.
Once the relevant parameters have been configured, group addresses may be assigned to detector functions, allowing
the detector to communicate with other devices on the KNX bus. Finally, a download function is performed to write the
settings and configuration to the detector.
The detector may be placed into programming mode using the programming pushbutton on the rear of the unit, or by
using the optional UHS5 infra-red remote control. When the device enters programming mode, a red LED is illuminated
on the rear of the unit, and also through the sensor aperture. Once programmed, the device will leave programming
mode automatically.
General settings
The general configuration tab contains settings which relate to general operation of the detector, such as sensitivity,
timeouts and whether the walk test LED should be enabled or disabled. Settings made in this section will also affect
inputs to the various controllers detailed below, with the exception of the basic movement detection controller.
The detector contains a light sensor for use as part of the constant brightness controller, and to send light level readings
to other devices on the KNX bus. It is important to note that the light sensor requires calibration in order to produce real
lux values, and this calibration should take place once installed using a light meter.
To perform a calibration, the light level multiplier should initially be set to 1.0. The room should be furnished as reflected
light (e.g. from uncovered floor tiles) will dramatically change the measured value. Using the ETS group monitor, record
several lux values for different levels of illumination, with the light meter placed normally within the room. It will be
necessary to assign a group address to the light level output group object.
Once these values have been recorded, the multiplier can be calculated as follows:
Light meter value Detector value Calculated Multiplier
590 534 1.105
928 816 1.137
Multiplier =
lightmetervalue
detectorvalue
For example.
An average of the calculated multiplier values yields a multiplier of 1.121.

8
Setting Options Description
Sensor walk test LED Disable
Enable
Enable or disable the sensor walk test LED, triggered
when movement is detected. This is useful for
commissioning, (or if the detector is to be used in
bedrooms). Note that the walk test function can also
be turned on and off via infra-red remote control.
Sensor sensitivity 0 to 9 Increase or decrease the detector's sensitivity to
movement. 0 is least sensitive, 9 is most sensitive.
The sensitivity can be overridden via infra-red
remote, but will be overwritten when parameters are
updated via ETS.
Movement timeout 0 to 65,535 seconds How long to wait after the last movement is detected
before signalling a 'movement cleared' state.
Lux multiplier Floating point Value to multiply raw light level readings by to obtain
true lux value. In practice, this will need to be set with
the aid of a light meter in the environment that the
detector is used in, as reflected light and even choice
of furnishings will dramatically affect the readings
obtained.
Send light level telegrams every 0 –65,535s Defines how often to send light level telegrams. It is
only possible to send cyclically: immediate
transmission would overload the bus.
KNX function and configuration
General parameters & group address table
Group Object Data Type Description
Light Level Output 9.4 DPT_Value_Lux Simple cyclical output of current brightness in lux.
Basic movement detection
The basic movement detection parameters are designed to provide raw access to the movement sensor itself.
Movement detection by this function is not affected by the movement timeout parameter in the General parameters
settings section –i.e. an telegram indicating an absence of movement will be sent relatively quickly.
'For operation as a slave device in a multi-sensor environment, it is necessary to configure the sensor to send an 'on'
command when movement is detected. There is no need to configure the corresponding 'off'
command, as this timeout is handled by the master detector. The switch state group object should be linked with the
corresponding slave input on the master detector.'
Setting Options Description
When movement detected Send 'on' command
Send 'off' command
Send 'on' command cyclically
Send 'off' command cyclically
Do nothing
Defines which switch telegram should be sent when
movement is detected.
When movement cleared Send 'on' command
Send 'off' command
Send 'on' command cyclically
Send 'off' command cyclically
Do nothing
Defines which switch telegram should be sent when
movement is no longer detected.
Send cyclical telegrams every 0 –65,535s Defines how often to send switch state telegrams if
cyclical sending has been chosen.
Group Object Data Type Description
Switch state output 1.1 DPT_Switch Switch state transmitted when movement is detected
or movement is no longer detected.

9
Switch inputs
The switch inputs parameters are used to define the behaviour when the two volt-free switch inputs are connected. The
inputs can be used to send dimming commands, recall scenes or send simple switch (on/off) telegrams. It should be
noted that these switch inputs can be used as part of logic functions if required.
Setting Options Description
Switch input 1 close action Send 'dim up' command
Send 'dim down' command
Recall scene number
Send 'on' command
Send 'off' command
Send 'on' command cyclically
Send 'off' command cyclically
Do nothing
Defines what type of command should be sent when
switch input 1 is closed.
Switch input 1 close scene number 1 –64 Scene number to recall when switch input 1 is closed
Switch input 1 open action Send 'dim up' command
Send 'dim down' command
Recall scene number
Send 'on' command
Send 'off' command
Send 'on' command cyclically
Send 'off' command cyclically
Do nothing
Defines what type of command should be sent when
switch input 1 is opened.
Switch input 1 open scene number 1 –64 Scene number to recall when switch input 1 is
opened.
Switch input 2 close action Send 'dim up' command
Send 'dim down' command
Recall scene number
Send 'on' command
Send 'off' command
Send 'on' command cyclically
Send 'off' command cyclically
Do nothing
Defines what type of command should be sent when
switch input 2 is closed.
Switch input 2 close scene number 1 –64 Scene number to recall when switch input 2 is closed.
Switch input 2 open action Send 'dim up' command
Send 'dim down' command
Recall scene number
Send 'on' command
Send 'off' command
Send 'on' command cyclically
Send 'off' command cyclically
Do nothing
Defines what type of command should be sent when
switch input 2 is opened.
Switch input 2 open scene number 1 –64 Scene number to recall when switch input 2 is
opened.
Dim up/dim down step percentage 100%
50%
25%
12.5%
6.25%
3.125%
1.5625%
The percentage to add or subtract from the current
dimmer value when the relevant button is pressed.
Smaller percentages offer finer-grained control, but
require the user to press the button more times to
change the light level.
Send switch 1 cyclical telegrams every 0 –65,535s Defines how often to send switch state telegrams if
cyclical sending has been chosen.
Send switch 2 cyclical telegrams every 0 –65,535s Defines how often to send switch state telegrams if
cyclical sending has been chosen.
Group Object Data Type Description
Switch 1 scene recall output 17.1 DPT_SceneNumber Scene number transmitted when switch 1 changes
state if in scene recall mode.
Switch 2 scene recall output 17.1 DPT_SceneNumber Scene number transmitted when switch 2 changes
state if in scene recall mode.
Switch 1 state output 1.1 DPT_Switch On/off switch state telegram if configured.
Switch 2 state output 1.1 DPT_Switch On/off switch state telegram if configured.
Dimming control output 3.7 DPT_Control_Dimming Dimming control output if switches are configured for
dim up/dim down operation.

10
Infra-red scene control
The infra-red scene control parameters are used to configure the scene recall behaviour when the sensor is used with
the UHS7 remote control handset. This handset provides eight scene recall buttons, dim up/down buttons and on/off
buttons. As KNX defines a maximum of 64 scenes per group object, the parameter page allows these scenes to be
mapped to the 8 remote control buttons.
In addition, the on/off buttons may be used to transmit a simple switch telegram, or alternatively used to recall an
additional two scenes. This would allow the 'off' scene to preserve a low level of light at all times.
Dim up/dim down buttons are provided for direct control of the dimmer; the dimming interval may also be set. Note that
variations to brightness using this method will not be 'saved' by the dimmer; subsequent scene recalls will revert to
programmed values.
Setting Options Description
On/off button command type Switch
Scene Recall
Defines whether the on/off buttons should be used to
send switch or scene recall telegrams
Map 'on' button to scene 1 –64 Scene number to be associated with 'on' button
Map 'off' button to scene 1 –64 Scene number to be associated with 'off' button
Map button 1 to scene 1 –64 Scene number to be associated with IR button 1
Map button 2 to scene 1 –64 Scene number to be associated with IR button 2
Map button 3 to scene 1 –64 Scene number to be associated with IR button 3
Map button 4 to scene 1 –64 Scene number to be associated with IR button 4
Map button 5 to scene 1 –64 Scene number to be associated with IR button 5
Map button 6 to scene 1 –64 Scene number to be associated with IR button 6
Map button 7 to scene 1 –64 Scene number to be associated with IR button 7
Map button 8 to scene 1 –64 Scene number to be associated with IR button 8
Dim up/dim down step percentage 100%
50%
25%
12.5%
6.25%
3.125%
1.5625%
The percentage to add or subtract from the current
dimmer value. Smaller percentages offer finer-
grained control, but require the user to press the
button more times to change the light level
Group Object Data Type Description
Scene recall output 17.1 DPT_SceneNumber Scene number transmitted when IR scene button is
pressed, or on/off buttons in scene recall mode
Switch output 1.1 DPT_Switch Switch on/off telegram transmitted when IR on/off
buttons are pressed
Dimming control output 3.7 DPT_Control_Dimming Dimming telegram transmitted when IR dim up/dim
down buttons are pressed. The increment can be
configured by the installer

11
Logic controller 1 / 2 (switch/scene)
Group Object Data Type Description
Switch state output 1.1 DPT_Switch The main output from the channel's logic expression.
Scene recall output 17.1 DPT_SceneNumber Configured scene number is sent via this group
object if required.
Enable input 1.1 DPT_Switch Global enable/disable input for this channel, allowing
remote objects to potentially enable or disable this
detector. The input must be part of the logic function
to enable this functionality.
Slave trigger input 1.1 DPT_Switch Slave input for this channel, allowing the state of other
detectors to be read as part of the logic function.
The switch/scene logic controller tabs allow up to two independent switch/scene recall channels to be configured. Each
channel receives the same inputs from the movement sensor and Switch input connections, but have separate KNX
group objects. The behaviour of the channel is defined by a logic expression which ultimately evaluates to true or false,
triggering one of two actions.
Configuring the logic expression is no more complicated than writing a sentence. Drop-down boxes allow various
conditions, terms and actions to be chosen. If appropriate, additional drop-down boxes will appear to allow the
expression to be expanded. The most basic configuration is as follows:
IF (Movement Detected) THEN Send 'On' Telegram ELSE Send 'Off' Telegram
This statement would cause the 'on' telegram to be sent to the corresponding channel's KNX output object when
movement was detected, and then an 'off' telegram to be sent once the movement timeout has expired.
A more complicated example would use inputs to enable or disable the movement detector remotely, for instance:
IF (Movement Detected AND Group Enable Input Set) OR (Switch 1 Input Closed) THEN Send 'On' Telegram ELSE Send 'Off'
Telegram
This statement would cause the 'on' telegram to be sent if movement had been detected and the detector has been
remotely enabled, or if the local Switch 1 input was set. Otherwise the 'off' telegram would be sent. This example would
be useful in a building in night mode where all detectors are normally switched off unless a local override switch has
been operated.
The KNX slave input can be used as an input from another detector. When an 'on' telegram is received by this group
object, the sensor considers the slave input to be set until the timeout period (in general settings) has expired. Any 'off'
telegrams are ignored. This allows several slave detectors to be linked with a single master detector.
The controller can also be configured to send a scene recall telegram, for instance recalling a bright scene when
movement is detected, and recalling a lower-light scene when the room is no longer occupied.
If required, telegrams can be sent cyclically (i.e. every few seconds), rather than only when the state changes. This may
be required for some devices; the delay is configurable and should be chosen to avoid unduly loading the KNX bus.
Setting Options Description
Enable/disable logic controller 1/2 Disable
Enable
Enable or disable this movement channel.
Logic conditions Movement detected
Movement cleared
Group enable input set
Group enable input clear
Group slave input set
Group slave input clear
Switch 1 input closed
Switch 1 input opened
Switch 2 input closed
Switch 2 input opened
Brightness above lux threshold
Brightness below lux threshold
Logic conditions may be combined using logic terms
to form an expression, which is used to perform one
action when the expression is true, and another when
the expression is false.
Logic terms AND
OR
THEN
Logic terms are used to define the function. The AND
term indicates that ALL inputs must be true for the
expression to be true, whereas the OR term will
return true if one of the inputs is true. The THEN term
is used to indicate that the expression is complete,
and that the next item is an action.
Logic actions Send 'on' telegram
Send 'off' telegram
Send 'on' telegram cyclically
Send 'off' telegram cyclically
Recall scene 'A'
Recall scene 'B'
Send nothing
When the logic expression is evaluated, an action
may be associated with both the if-then and else
portions of the expression, i.e. Send 'on' telegram if
the expression is true, else Send 'off' telegram.
Send cyclical telegrams every 0 –65,535 seconds How often to send cyclical telegrams if selected as
part of the logic function.
Scene 'A' 1 - 64 KNX scene number to be recalled on command.
Scene 'B' 1 - 64 KNX scene number to be recalled on command..
Brightness threshold Floating point Lux value to be used as comparison value in logic
function, e.g. above or below this value.

12
Logic controller 3 (brightness)
The brightness logic controller aims to maintain a uniform brightness in the sensor area at all times. Two brightness
targets can be defined, subject to a successful calibration (as detailed earlier). In similar fashion to the movement
controllers, a logic expression can be constructed to choose which brightness target the controller should try to achieve.
This would allow the lights to be turned off overnight, or for the lights to be made brighter when the room is occupied.
The controller sends an 8-bit absolute percentage value to the dimmer. The installer may choose suitable values for the
dimming increment and interval: these values should be chosen to minimise dimmer oscillation and response time. A
deadband setting prevents the controller from making unnecessary adjustments. It is also possible to set a brightness
target via a KNX group object, allowing the brightness target to be controlled from elsewhere. This might be useful in
combination with a room reservations system, or to make the lights dimmer at weekends.
Dimming telegrams are sent when required by the controller; the controller will not send dimming telegrams when the
measured light level is close to the target value, subject to the deadband setting.
Setting Options Description
Enable/disable logic controller 3 Disable
Enable
Enable or disable the logic controller function.
Logic conditions Movement detected
Movement cleared
Group enable input set
Group enable input clear
Group slave input set
Group slave input clear
Switch 1 input closed
Switch 1 input opened
Switch 2 input closed
Switch 2 input opened
Logic conditions may be combined using logic terms
to form an expression, which is used to perform one
action when the expression is true, and another when
the expression is false.
Logic terms AND
OR
THEN
Logic terms are used to define the function. The AND
term indicates that ALL inputs must be true for the
expression to be true, whereas the OR term will
return true if one of the inputs is true. The THEN term
is used to indicate that the expression is complete,
and that the next item is an action.
Logic actions Set brightness target A
Set brightness target B
Set remote brightness target
Set 'on'
Set 'off'
When the logic expression is evaluated, an action
may be associated with both the if-then and else
portions of the expression, i.e. Set brightness target 1
if the expression is true, else Set brightness target 2.
Brightness target A Floating point Target value in lux for the brightness controller to aim
for.
Brightness target B Floating point Target value in lux for the brightness controller to aim
for.
Telegram interval 0 –65,535 milliseconds How often to send commands to the dimmer when
varying the brightness.
Dimming increment 100%
50%
25%
12.5%
6.25%
3.125%
1.5625%
The amount by which each subsequent dimming
telegram raises or lowers the light level. Typically a
small value will be used here, but will depend on the
environment. Large values may cause the dimmer to
oscillate between light and dark.
Dimming deadband Floating point Deadband value in lux within which the controller will
not attempt to vary the light output.
Group Object Data Type Description
Percentage output 5.4 DPT_Percent_U8 Brightness control for connected dimmer. The
constant brightness controller will increase or
decrease this value depending on the target selected.
Note that either the dimming or percentage group
objects can be used, but not both at the same time.
Enable input 1.1 DPT_Switch Global enable/disable input for this channel, allowing
remote objects to potentially enable or disable this
detector. The input must be part of the logic function
to enable this functionality.
Slave trigger input 1.1 DPT_Switch Slave input for this channel, allowing the state of other
detectors to be read as part of the logic function.
Target lux input 9.4 DPT_Value_Lux Brightness target value set by an external device,
rather than an internal preset.
Target lux output 9.4 DPT_Value_Lux Brightness target value selected by logic function, for
use by other devices.

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14
Due to our policy of continual product improvement CP Electronics reserves the right to alter the specification of this product without prior notice.
Dimensions See diagrams opposite
Weight 0.20kg
Supply Voltage 30V DC via KNX bus
Power consumption On (peak) 5.5mA
Off (idle) 5.4mA
Terminal Capacity KNX 1.2mm2(22swg) via
KNX connector
Switch input 2.5mm2
Temperature -10ºC to 35ºC
Humidity 5 to 95% non-condensing
Material (casing) Flame retardant ABS and PC/ABS
Type Class 2
IP rating IP40
Compliance EMC-2004/108/EC
LVD-2006/95/EC
Technical data
Part numbers
C.P. Electronics Ltd
Brent Crescent
London
NW10 7XR
United Kingdom
Tel: + 44 (0) 333 900 0671
Fax: + 44 (0) 333 900 0674
www.cpelectronics.co.uk
[e-mail]
Ref: #WD715 issue 1
FM 45789 EMS 534520
IMPORTANT NOTICE!
This device should be installed by a qualified electrician in
accordance with the latest edition of the IEE Wiring
Regulations and any applicable Building Regulations.
Part number Description
Detector EBDHS-KNX Ceiling HS PIR presence detector –KNX
Accessories DBB Surface mounting box
UHS5 Programming IR handset
UHS7 User IR handset
EBDHS-KNX
DBB
UK and international patents applied for