function Innovation & Technology AS KNX MultiLight User manual

function Innovation & Technology AS
User’s manual
KNX MultiLight (ML-K)
Article number: 44001
Picture: KNX MultiLight User Panel

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Manual –KNX MultiLight Art.nr 44001
Doc.no. D-TS-ML-K-005-A

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Manual –KNX MultiLight Art.nr 44001
Doc.no. D-TS-ML-K-005-A
Table of content
1APPLICATION FOR THE KNX MULTILIGHT ROOM CONTROLLER ................ 4
2INTRODUCTION ............................................................................................ 4
3MULTILIGHT START-UP AND GENERAL FUNCTIONS ................................... 6
4GENERAL FUNCTIONS AND USER PANEL ..................................................... 8
5MOVEMENT AND LUX LEVEL DETECTION ..................................................... 9
5.1 MOVEMENT SENSOR .........................................................................................................................9
5.1.1 Master function ”Movement General” ...........................................................................10
5.1.2 Slave function ”Movement General” .............................................................................10
5.1.3 Cyclic sending ...................................................................................................................10
5.2 LUX SENSOR .................................................................................................................................11
5.2.1 Parameters .......................................................................................................................11
5.2.2 LUX calibration .................................................................................................................11
5.3 BLOCK DIAGRAM ............................................................................................................................12
5.4 OBJECT LIST..................................................................................................................................13
6THERMOSTAT .............................................................................................. 14
6.1 REGULATOR FUNCTIONALITY ..........................................................................................................14
6.2 OPERATIONAL MODES....................................................................................................................14
6.3 PARAMETERS ................................................................................................................................15
6.3.1 Comfort mode .................................................................................................................15
6.3.2 Standby mode .................................................................................................................16
6.3.3 Night mode ......................................................................................................................16
6.3.4 Frost/Heat protection .....................................................................................................16
6.3.5 Basic heating and cooling stage ...................................................................................17
6.3.6 Additional heating and cooling stage ...........................................................................17
6.4 LOCAL TEMPERATURE ADJUSTMENT.................................................................................................18
6.5 REGULATOR FUNCTION ..................................................................................................................19
6.6 PI REGULATOR .............................................................................................................................20
6.7 OBJECT LIST.................................................................................................................................21
7SWITCH ACTUATOR .................................................................................... 24
7.1 PARAMETER...................................................................................................................................24
7.1.1 Staircase function ............................................................................................................24
7.1.2 ON/OFF Delay function ...................................................................................................25
7.1.3 Logic AND/OR ..................................................................................................................25
7.1.4 Force operation ................................................................................................................25
7.2 INITIAL START-UP AND POWER FAILURE CONSIDERATIONS.................................................................25
7.3 BLOCK DIAGRAM ............................................................................................................................25
7.4 OBJECT LIST..................................................................................................................................26
8BINARY INPUTS .......................................................................................... 27
8.1 PARAMETER...................................................................................................................................27
8.1.1 Switch ................................................................................................................................27
8.1.2 Dimming ............................................................................................................................27
8.1.3 Shutter ..............................................................................................................................28
8.2 BLOCK DIAGRAM ............................................................................................................................28
8.3 OBJECT LIST..................................................................................................................................29
9MECHANICAL DIMENSIONS........................................................................ 31
9.1 DETECTION AREA MOVEMENT SENSOR (ML-M) ...............................................................................32
9.2 CONNECTOR PINOUT .....................................................................................................................32
10 WIRING DIAGRAM.................................................................................... 33
11 TECHNICAL DATA...................................................................................... 34

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1Application for the KNX MultiLight room controller
KNX MultiLight is a three part room controller designed to be pre-fabricated into
suspended luminaires. The KNX MultiLight node, the movement detector and the user
panel will control lighting, climate and shutters in both closed and open plan offices.
The main functions of the KNX MultiLight are:
Controlling heating and cooling
Temperature sensing
User’s panel for manual control
Relay output for light control
Movement and LUX sensor
For programming and configuration see chapters 3 to 8.
For wiring and installation instructions see chapter 10.
For technical see chapter 11.
2Introduction
KNX MultiLight is designed to be an efficient room controller system for office, hotels and
other commercial buildings where suspended luminaire are used. The core of the KNX
MultiLight is a demand controlled two-step temperature regulator for separate cooling-
and heating control.
The functionality of the product can be configured and connected to the rest of the KNX
automation system by using the ETS Tools Software (see www.knx.org)
Example 1 –Heating regulator:
The KNX MultiLight is configured as a two-step heating regulator. The regulator has one
temperature set-point for a room that is occupied and another temperature set-point for
a room that is vacant. Let’s say the temperature set-point for an occupied room is 22°C
and the set-point for the vacant room is set to 19°C. The movement detector mounted in
the suspended luminaire will detect a person walking into the room. The set-point will be
raised from 19°C in standby mode (vacant) to 22°C in comfort mode (occupied).
Example 2 –Lighting:
The KNX MultiLight can turn on and off the luminaire. So, when a person walks into the
room and the temperature set-point is changed from standby to comfort mode, the light
will also be turned on. The light can remain off if the lux level in the room is so high that
the light from the luminaire is not needed.

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Example 3 –Ventilation:
The KNX MultiLight can control ventilation for the office space based on the movement
detector and the temperature regulator. The ventilation can be reduced to a minimum
when the room is vacant and the controller is in standby mode. The ventilation system
will be asked to increase the ventilation when a person enters the room.
The ventilation system will usually have a cooling effect for the room because of lower air
temperature in the supplied air. The cooling regulator of the KNX MultiLight can trigger
the need for extra ventilation based the room temperature.
Example 4 –User control:
The KNX MultiLight will usually control the climate and lighting automatically. Occupants
may want to take control over their own environment and change lighting, temperature
and shutters manually. The KNX MultiLight can be fitted with a user panel that will
replace the luminaire pull cord. The panel can give the user temperature control, control
of shutters and lighting control. The temperature setpoint can be adjusted -3°C to +3°C
from the user panel (see Figure 1).
Figure 1 - KNX MultiLight user panel

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3MultiLight start-up and general functions
KNX MultiLight can be configured by using the ETS Tools Software. The product database
file for KNX MultiLight can be downloaded from http://www.function.no/MultiLight.
Documentation for the parameters, objects and example configurations can be found in
the chapters below.
The MultiLight controller can be set in learn-mode by pressing the learning-mode switch
on the KNX node or by pressing the learn button on the movement detector. The
locations of the buttons are shown with red circles in Figure 2.
Figure 2 - Learn mode buttons
The red programming LED on the KNX node and inside the lens of the movement
detector will be lit when the KNX MultiLight is in learn mode. The programming LED will
blink when the MultiLight is not programmed (un-programmed node).
The node will check communication with movement detector and panel. If
communication has failed the object “Device self-test status” will be set to “1”.
When the error situation is cleared the “Device self-test status” object changes its value
to 0.
The startup procedure for a unit that has not been programmed with ETS includes
switching on the relay and showing motion detection with the red LED. This ensures that
not programmed units will turn on the light automatically.
Use a small circular object like a paper clip or a bare KNX copper wire to reach the
programming button on the movement detector.

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Note: The KNX node includes basic functionality for test and commissioning purposes
that will be removed after the first ETS download:
1. The digital inputs will toggle the relay. Digital input 1 can be connected to an
impuls switch for the luminaire pull cord. Pulling the cord will toggle the light
on and off.
2. Detection of movement is shown by blinking the red LED inside the
movement detector lens.
Figure 3 –KNX MultiLight node, movement detector and user panel

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4General functions and user panel
The status of the KNX MultiLight is shown by the object “Self-Test status”. For normal
operational nodes this status object is low. If the movement sensor or user panel does
not respond the self test status is set high. The object can be configured to be sent cyclic
[1 to 24 hours].
The KNX MultiLight can be configured without a user
panel, with a standard or extended user panel. The
standard and extended user panel option includes a
temperature sensor, buttons for local adjustment of the
temperature set-point and LED indication of the local
adjustment.
The user panel will also show the status of the
temperature regulator by showing either a red light if
the temperature regulator is heating or a blue light if
the temperature regulator is cooling. The extended user
panel will also include up and down buttons and LED
indication for manual shutter control.
The temperature regulator is not available if the KNX
MultiLight is configured without a user panel.
The temperature sensor can be calibrated from the user panel. The calibration mode is
activated if both the + and –buttons are pressed for 5 seconds or more. In this mode
the temperature LED will start to blink for the calibration setting. The + and –buttons
will increase or decrease the measured temperature in steps of 0.5°C. So, the measured
temperature will be adjusted 1.5°C lower if the -3 LED is blinking. The adjustment has to
be acknowledged by pressing both the + and –button.
Table 1 - Object list for general and user panel objects
ID
Name
Description
Configuration
OBJ 000
Device:
Self-Test status
This object will report self test result
and alive status with a "0" if
everything is ok. If it sends "1" the
self test has failed.
The object can be set to cyclic
sending by parameter.
This object will be set if the
communication with the movement
detector or user panel has failed.
1 bit
1.001
C R - T
OBJ 001
Panel:
Shutter operation
–Stop/Step
This object will be visible if
parameter “Activation of user panel”
is set to “Extended user panel”.
The object will be transmitted with
a 1 or a 0 if the up or down button
is pressed (short operation)
1 bit
1.007
C - - T
OBJ 002
Panel:
Shutter operation
–Up/Down
This object will be visible if
parameter “Activation of user panel”
is set to “Extended user panel”.
The object will be transmitted with
a 1 or a 0 if either the up or down
button is pressed (long operation).
1 bit
1.008
C - - T

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5Movement and LUX level detection
5.1 Movement sensor
The combined movement and LUX level sensor is connected to the MultiLight KNX node
through a 4-wire cable.
The communication object for the movement sensor, object 003 "Movement General",
has the following parameter settings:
Figure 4 - Movement sensor parameter window
1. Recovery time for detection from 1 to 255 minutes. The recovery time specifies
the time between the last detected movement and when the object is set low.
2. Action for start of detection can be ”ON” or “no reaction”.
3. Cyclic sending On commands of "Movement General" can be enabled or
disabled. The cycle time can be between 1 and 255 minutes. 0 disable the
function.
4. Action for end of detection can be ”OFF” or “no reaction”.
5. Separate Movement Local object
The movement detector can be configured with an additional communication
object named “Movement Local”. This object can have the following functionality:
a. Semi-automatic: "Movement Local" object is not transmitted at start of
detection, but will transmitt a ”0” for end of detection. The object can be used
as a turn off function.
b. Full automatic: "Movement Local" object is transmitted both at start of
detection and end of detection. The object can be used to both turn on and off
a function.
6. (Only visble if “Full automatic” is enabled)
Light dependent full automatic: "Movement Local" object can turn on and off a
function base on both movement and the lux threshold switch (see chapter below).

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7. PIR sensitivity can be adjusted from 20 to 100, where 20 is the highest
sensitivity. This parameter is default set to 40 and should not be set lower than
this value without testing for false detection.
5.1.1 Master function ”Movement General”
The “Movement General” can be re-trigged from another sensor like switches and
movement detectors. It is necessary to set the “Write” flag in the object 3 “Movement
General” to make the object re-triggable. Se Figure 5.
Figure 5 - Object flags for re-triggable "Movement General" object
5.1.2 Slave function ”Movement General”
The “Movement General” could be configured with “Slave”functionality. The slave
functionality can be enabled by setting the recovery time and the cyclic sending time to a
lower value than the Master (master detector recovery time or staircase timer). The
reaction at the end of detection must be set to “No reaction”.
5.1.3 Cyclic sending
If the value of cyclic sending is lower than the recovery time, the sensor will not send any
cyclic ON telegrams. If the two values are the same, the sensor sends one cyclic sending
right before the recovery time elapses. The cyclic sending time will not be affected by a
re-trigged recovery time.
It is not possible to re-trigg the “Movement Local” by object. This object can only
be re-trigged by the local movement detector.

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5.2 LUX sensor
5.2.1 Parameters
The lux sensor has two communication objects, one for the LUX value (Current Value)
and a threshold switch (Lux threshold switch). The object, “Lux threshold switch", will be
high or low based on the LUX value and the parameters below.
Figure 6 - Lux sensor parameter window
1. High threshold value: If the Lux value goes above this value the "Lux threshold
switch" will be set low or no action (depending on the parameter “Action above high
threshold value”).
2. Hystereses for lower value: “High threshold value”–“hysteresis for lower value”
will give the lower limit for the ”Lux threshold switch”. If the current lux value is
below this value, the Lux threshold switch is set high or no action (depending on the
parameter “Action below low threshold value”)
3. Time delay can be specified both for turning on and off the lux threshold switch.
The time delay can be between 1 and 255 seconds. The value “0” will disable the
time delay.
4. Cyclic sending of the lux threshold switch can be activated with a cycle time
between 1 and 255 minutes.
5.2.2 LUX calibration
The lux level object, “Lux Sensor: Current value (lux)”, can be calibrated by writing to
the object. The raw lux value will be subtracted from the written value and stored
permanently in EEPROM/flash.
Both raw values and the resulting calibrated values are shown in Figure 7. The pink line
is the raw value (V) from the sensor, the blue line is the wanted value (W) set by the
user. The calibration factor is: C=1-(V-W/V)
If the raw value V=1000, and the object is updated with 800, then the calibration factor
will be: c=1-(1000-800)/1000=0.8. See the graph in Figure 7.
The formula for calculating the lux is: Lux=c*V

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Figure 7 - Raw and calibrated lux values
The calibration factor is set to 1 and the raw value is used if “0” is written to the “Current
value (lux)” object. The object should be set to 0 to clear the current calibration before
re-calibrating the lux level. The lux level calibration is limited to 2 times the raw lux level,
so the calibration is limited to 2000 if the raw lux level is 1000.
5.3 Block diagram
Figure 8 - Block diagram of movement and lux sensor

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5.4 Object list
Table 2 - Object list for the Movement Sensor
ID
Name
Description
Configuration
OBJ 003
Movement:
General
When the movement detector
detects movement Obj. 003 either
sends a “1” or “No reaction”
depending on parameter “Reaction
at start of detection”.
At the end of detection (when the
“Recovery time” has elapsed) the
object will be transmitted either
with a “0” or “No reaction”.
The object can be set to cyclic
sending depending on parameter
“Cyclic sending”.
1 bit
1.001
C - (W) T
OBJ 004
Movement:
Local
This object can be configured by
parameter “Separate Movement
Local” to either “Disabled”, “Semi
automatic” or “Full automatic”. In
Semi automatic mode it will only
transmit at the end of detection.
In “Full automatic” the object will
transmit both at the start of
detection and at the end of
detection.
This object is not cyclic.
The object can also be dependent
on the “Lux Threshold Switch”
1 bit
1.001
C - - T
Table 3 - Object list for the LUX Sensor
ID
Name
Description
Configuration
OBJ 005
Lux Sensor:
Current value
(lux)
Writing a LUX value to this obj. will
calibrate the value from the sensor.
The calibration will NOT be
overwritten when new ETS software
is downloaded. The calibration and
the lux value written to Obj. 005 will
be stored permanently in
EEPROM/flash.
2 byte
9.004
C R W -
OBJ 006
Lux Sensor:
Lux threshold
switch
The object transmits a 1, 0 or no
action depending on the Current
value (lux) and the threshold
parameters and the chosen action
from parameter.
The object can be sent cyclic.
It is possible to activate turn-on
and/or turn-off delay via
parameters.
1 bit
1.001
C - - T

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6Thermostat
6.1 Regulator functionality
The thermostat can control both heating- and cooling systems and will automatically
switch between heating and cooling mode. The regulator outputs can be configured
either as ON/OFF control or continuous (0-100%) based on a PI regulator. The KNX
MultiLight has to be configured with a user panel with temperature sensor to have
temperature regulator functionality.
Regulator capability:
Four modes of operation: comfort, standby, night and frost/heat protection
On/off or 0-100% control for heating and cooling system
Combined heating- and cooling regulator with automatic switch-over
Additional heating or cooling stage with on/off control
Automatic transmission of the regulator outputs on change or cyclic every 40.
Minutes.
Room temperature measurement from the user panel
The temperature sensor can be calibrated (+/- 12.6K) in steps of 0.1 K with ETS
parameter
The temperature sensor can be internal calibrated (+/-1.5K) from the user panel
The actual temperature and the set-point temperature can be sent to the bus on
change or cyclically
Set-point values:
The base temperature set-point is defined in parameter (“Base setpoint in ºC”) and
is shown by object “Thermostat – Base setpoint”. This object can also be configured
for write access (selectable to be stored in permanent memory or not)
The working regulator set-point is shown by the object “Thermostat – Actual
setpoint”.
The base setpoint is only settable to whole degrees (eg. 21 or 22 °C)
Parameters for heating and cooling temperature set-points for standby and night
mode
Set-points for the additional heating/cooling stage are derived from the values from
the basic stage with an additional stage offset
Setpoint value shifting (local adjustment +/-3K) by local operation on the user panel
or by object. The step size is 0.5K
The reduced or increased temperatures for standby and night mode are settable in
steps of 0.1K
Frost/heat protection: frost protection set to 10 ºC (not adjustable) and heat
protection set to 35 ºC (not adjustable)
6.2 Operational modes
The KNX MultiLight has 4 operational modes; Comfort, Stand-by, Night and Frost/heat
protection. The active mode is selected based on the three 1.bit objects "Comfort Mode",
"Night Mode" and "Frost/heat protect". The table below shows which mode is active
based on the status of these three objects (X = don’t care).
Table 4 - Regulator modes
Active mode/object
value
Comfort
Mode
Night
Mode
Frost/
heat
Standby
0
0
0
Night Mode
0
1
0
Comfort Mode
1
X
0
Frost/heat protect
X
X
1

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6.3 Parameters
6.3.1 Comfort mode
The thermostat is using the “Base setpoint in ºC” as the regulator set-point for the
heating regulator in comfort mode. The heating regulator starts to heat if the actual
temperature falls below the base setpoint minus the parameter value for “Low hysteresis
in 0.1K".
The heating regulator will turn off the heat when the actual temperature rises above the
base setpoint. The regulator will turn off the heat at 21.0 ºC with the parameter settings
shown in Figure 9
The cooling system will turn on at the temperature "Base setpoint in ºC" + "Deadzone
between heating and cooling in 0.1K" + "High hysteresis in 0.1K". The cooling system will
be turned off when the temperature falls below the base set-point + deadzone. The
cooling system will be turned off at 21.0 + 2.0 = 23ºC with the parameter settings
shown Figure 9.
Figure 9 - Thermostat settings
It is the value from the object "Actual setpoint" that the regulator uses as the
temperature set-point. The “Actual setpoint” will change depending on the “Base
setpoint”, the active mode, if the regulator is in heating- or cooling mode and the
local temperature adjustment.

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6.3.2 Standby mode
The regulator goes to standby mode if the three communication objects "Comfort Mode",
"Night Mode" and "Frost/heat protect" are low. The "Actual setpoint" in this mode will be
set to "Base setpoint" + "Reduced Heating in standby mode". The "Actual setpoint" is set
to: 21ºC + (-1.0ºC) = 20ºC for the parameter settings shown in Figure 9.
For the cooling system in standby mode the "Actual setpoint" is set 1 degree higher than
in comfort mode: 21ºC + 2ºC + 1ºC = 24ºC
6.3.3 Night mode
The regulator will go to night mode if only the “Night Mode” object is set high. The
temperature setpoint for the heating and cooling systems will change according to the
parameters "Reduced Heating in Night mode" and "Increased cooling in Night mode".
For the heating system the “Actual setpoint” is set to: 21ºC + (-3.0ºC) = 18ºC with the
parameters shown in Figure 9. For the cooling system the "Actual setpoint" will be: 21ºC
+ 2ºC + 3ºC = 26ºC
6.3.4 Frost/Heat protection
The Frost/Heat protection regulator mode will set fixed temperature setpoints for the
heating and cooling regulators. The heating system is turned on if the temperature falls
below 10ºC –0.5ºC hysteresis. The heating system is turned off if the temperature goes
above 10ºC.
The cooling system will turn on if the temperature goes above 35ºC + 0.5ºC hysteresis
and will turn off again when the temperature goes below 35ºC.
The user panel LED indication for the local temperature adjustment will be turned
off when the regulator goes into standby mode. The LED indication for the active
heating- and cooling system will still be active.
The user panel LED indication for the local temperature adjustment will be turned
off when the regulator goes into night mode. The LED indication for the active
heating- and cooling system will still be active.
The user panel LED indication for the local temperature adjustment will be turned
off when the regulator goes into Frost/heat protection mode. The LED indication for
the heating- and cooling system alternates between heating and cooling every
second.

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6.3.5 Basic heating and cooling stage
See the description of the different regulator modes in chapters 6.3.1 to 6.3.4.
6.3.6 Additional heating and cooling stage
The KNX MultiLight can control an additional heating and/or cooling system with ON/OFF
control. The temperature limits for the additional heating- and cooling systems can be
defined by parameters, see Figure 10 and Figure 11.
The additional heating stage will be turned on if the room temperature has dropped 2ºC
below the parameter settings in the thermostat parameter window, see Figure 9. The
hysteresis for the additional heating stage is fixed to +0.5ºC.
The additional heating stage will turn on if the temperature falls below 21ºC - 2.0ºC =
19ºC and turn off at 21ºC - 2.0ºC + 0.5ºC = 19.5ºC in comfort mode according to the
parameter settings shown in Figure 9 and Figure 10.
Figure 10 - Heating parameter windows
Figure 11 - Cooling parameter windows
The additional cooling stage will be turned on bases on the stage offset from basic to
additional stage, see Figure 11. The additional stage cooling will turn on if the
temperature rises above 23ºC + 2.0ºC = 25ºC for comfort mode (see parameters Figure
9). The additional stage will turn off at 23ºC + 2.0ºC - 0.5ºC = 24.5ºC

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6.4 Local temperature adjustment
The temperature setpoint can be adjusted both by the communication
object “Local adjustment of temperature" (obj. 011) and by the user
panel. The local adjustment of temperature object can adjust the
actual temperature setpoint by +/-10ºC.
The user panel temperature adjustment can maximum be +/-3ºC. The
adjustment done on the panel will update the local adjustment of
temperature communication object.
The heating system will be turn on at 20.5ºC - 3ºC = 17.5ºC and off
at 18.0ºC in comfort mode with the parameters shown in Figure 9.
The cooling system will be turned on at 21ºC - 3ºC + 2ºC + 0.5ºC =
20.5ºC and Off if the temperature drops below 20.0ºC.
It is possible to limit the temperature adjustment up or down, for example to +3 to
-1C, +1.5C to -0.5C and +0.5 to -0C. The LED indicating +3 to -3 on the user panel
will still show the full scale, so the user will not notice the limitation.
The temperature sensor includes a filtering algorithm that will eliminate temperature
rise after the user panel has been touched. The temperature measurement will
remain unchanged for 3 to 8 minutes after the buttons on the user panel has been
operated.
If the panel is removed, all regulator outputs will be set to “0” one time, and the
actual temperature is send 0ºC.
The “Self test” object will indicate the error and will be transmitted as “1”.

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6.5 Regulator function
Figure 12 - Asymmetric regulator functionality

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6.6 PI Regulator
The KNX MultiLight thermostat can control heating and cooling systems with Pulse-With-
Modulation. The communication object for the PWM control value output is a 1.byte 0-
100% of the type DPT5.001. The control value will automatically be transmitted every 40.
minutes and can also be transmitted when the value has changed a specific percentage,
see Figure 13.
Figure 13 - Heating PI-regulator
The PI-regulator is configured with a proportional factor (Kp) and a reset time (Ti). The
equation for the regulator output is shown in (3).
The integration of the error for each regulator evaluation is substituted by the step
number (30 second increments) multiplied with the last error function: e(n)∙n divided by
the time constant, see equation (3)
The proportional factor Kp :
rangealproportion
KP_
1
(1)
The error function e(n):
e(n) = set_point - actual_temperature (2)
The regulator output equation:
I
P
I
PT
n
neK
Tnne
neKnu 2 1)(
2)(
)()(
(3)