ABB i-bus KNX User manual

ABB i-bus®KNX
DALI-Light Controller DLR/A 4.8.1.1
Product Manual

ABB i-busKNX
Contents
DLR/A 4.8.1.1 | 2CDC507128D0202 i
Contents
Page
1General ................................................................................................. 3
1.1 Using the product manual.............................................................................................................4
1.1.1 Structure of the product manual ...................................................................................................4
1.1.1.1 Software Tool ...............................................................................................................................4
1.1.2 Notes............................................................................................................................................5
1.2 Product and functional overview...................................................................................................6
1.3 DALI principles for the DLR/A.......................................................................................................8
1.3.1 DALI group control........................................................................................................................9
2Device technology............................................................................. 11
2.1 DLR/A 4.8.1.1.............................................................................................................................12
2.1.1 Technical data DLR/A 4.8.1.1.....................................................................................................12
2.1.2 Connection schematic DLR/A 4.8.1.1.........................................................................................15
2.1.3 Dimensional drawing DLR/A 4.8.1.1...........................................................................................17
2.2 Light Sensor LF/U 2.1.................................................................................................................18
2.2.1 Technical data LF/U 2.1..............................................................................................................18
2.2.2 Connection schematic LF/U 2.1..................................................................................................20
2.2.3 Dimensional drawing LF/U 2.1....................................................................................................21
2.2.4 Polar diagram LF/U 2.1...............................................................................................................22
2.2.5 Checking the LF/U 2.1................................................................................................................22
2.3 Assembly and installation...........................................................................................................23
2.4 Description of the DALI output....................................................................................................25
2.5 Display elements........................................................................................................................26
2.6 Operators....................................................................................................................................27
3Commissioning.................................................................................. 29
3.1 Overview.....................................................................................................................................30
3.1.1 Conversion .................................................................................................................................33
3.1.1.1 Conversion procedure ................................................................................................................34
3.1.2 Copying and exchanging parameter settings..............................................................................35
3.1.2.1 Procedure for copy and exchange..............................................................................................36
3.1.2.2 Functional overview....................................................................................................................37
3.1.3 Overlapping lighting groups........................................................................................................38
3.2 Parameters.................................................................................................................................39
3.2.1 Parameter window General........................................................................................................40
3.2.2 Parameter window Light sensor .................................................................................................47
3.2.3 Parameter window Central .........................................................................................................49
3.2.3.1 Parameter window Status - Central............................................................................................57
3.2.3.2 Parameter window Gx Group .....................................................................................................63
3.2.3.2.1 Parameter window - Gx Status...................................................................................................73
3.2.3.2.2 Parameter window - Gx Fault.....................................................................................................77
3.2.3.2.3 Parameter window - Gx Functions..............................................................................................82
3.2.3.2.4 Parameter window - Gx Staircase lighting..................................................................................90
3.2.3.2.5 Parameter window - Gx Light controller......................................................................................95
3.2.3.2.6 Parameter window - Gx Control Operating...............................................................................103
3.2.3.2.7 Parameter window - Gx Slave..................................................................................................108
3.2.4 Parameter window Scenes.......................................................................................................113
3.2.4.1 Parameter window Scene x......................................................................................................114
3.3 Communication objects ............................................................................................................117
3.3.1 Short overview of the communication objects...........................................................................118
3.3.2 Communication objects General...............................................................................................120
3.3.3 Communication objects DALI output ........................................................................................128
3.3.4 Communication objects Group x...............................................................................................140
3.3.5 Communication objects Scene x/y............................................................................................146
3.3.6 Communications object Lighting control...................................................................................148
3.3.7 Communication objects function - Slave...................................................................................151
3.3.8 Communication objects function Staircase lighting...................................................................153

ABB i-busKNX
Contents
ii 2CDC507128D0202 | DLR/A 4.8.1.1
4Planning and application.................................................................155
4.1 Automatic DALI addressing ..................................................................................................... 155
4.2 Function diagram..................................................................................................................... 156
4.3 Monitoring of lamps and ballasts ............................................................................................. 158
4.4 Exchange of DALI devices....................................................................................................... 159
4.5 Effect of ageing on lamps ........................................................................................................ 160
4.6 Burning-in of luminaires........................................................................................................... 161
4.7 Control telegram and status with a communication object....................................................... 162
4.8 Staircase lighting ..................................................................................................................... 163
4.8.1 Staircase lighting withfunction Light control ........................................................................... 166
4.9 Constant lighting control .......................................................................................................... 167
4.9.1 Changing the setpoint.............................................................................................................. 171
4.9.2 Deactivation of constant lighting control................................................................................... 172
4.9.3 Activating constant lighting control........................................................................................... 172
4.9.4 Follow-up time of the inactive light control............................................................................... 173
4.9.5 Commissioning/calibration of the constant lighting control....................................................... 173
4.9.6 Brightness detection ................................................................................................................ 179
4.9.7 Function of the constant lighting control................................................................................... 179
4.10 Scene....................................................................................................................................... 183
4.11 Slave........................................................................................................................................ 186
4.11.1 Slave with offset function......................................................................................................... 189
4.12 DALI lighting curve................................................................................................................... 191
4.12.1 Characteristic adjustment of the linear lighting curve............................................................... 193
4.12.2 Characteristic adjustment of phys-min brightness value.......................................................... 194
AAppendix...........................................................................................195
A.1 Code table Diagnostics Low byte (No. 6)................................................................................. 195
A.2 Code table Diagnostics High byte (No. 6)................................................................................ 196
A.3 Code table Request diagnostics (No. 7) .................................................................................. 198
A.4 Table of fading times Fade time(No. 8).................................................................................. 199
A.5 Code table Status sensors (No. 9)........................................................................................... 200
A.6 Code table Fault group/device code (No. 19) .......................................................................... 202
A.7 Code table 8 bit scene (No. 212)............................................................................................. 206
A.8 Further information about DALI................................................................................................ 207
A.9 Ordering details ....................................................................................................................... 208

ABB i-busKNX
General
DLR/A 4.8.1.1 | 2CDC507128D0202 3
1 General
The ABB i-bus®KNX DALI Light Controller DLR/A combines both the internationally standardized and
open standards in the digital illumination control DALI (EN 62386) and the intelligent installation system
KNX (ISO/IEC 14543-3 and EN 50090) and, at the same time, allows energy-efficient, constant lighting
control.
Its surface-mounted design means that the DLR/A is suitable for installation in suspended ceilings or
underfloor to integrate remote DALI lighting areas into the KNX building automation. The DALI output of
the DLR/A can be used to connect up to 64 DALI devices. The 64 DALI devices can be individually
addressed and allocated as required in up to 8 lighting groups. Control using KNX is implemented
exclusively via these 8 lighting groups.
With 4 light sensors, up to 4 separate constant lighting controls are possible that additionally provide
enhanced comfort and automatic energy conservation.
Constant lighting control can:
reduce operating costs
save energy
guarantee an optimum working environment at constant brightness
provide enhanced lighting comfort in day-to-day operation
The occupancy is also automatically detected in addition to lighting control via a KNX presence detector,
an above average energy saving potential can also be achieved using KNX lighting technology alone. The
following graphic provides an overview of the energy that can be saved by the use of modern, automatic
intelligent installation systems.

ABB i-busKNX
General
4 2CDC507128D0202 | DLR/A 4.8.1.1
1.1 Using the product manual
This manual provides you with detailed technical information relating to the function, installation and
programming of the ABB i-bus®KNX DLR/A 4.8.1.1 DALI Light Controller and its corresponding LF/U 2.1
light sensor. The application of the DLR/A is explained using examples.
This manual is subdivided into the following chapters:
Chapter 1
General
Chapter 2
Device technology
Chapter 3
Commissioning
Chapter 4
Planning and application
Chapter A
Appendix
1.1.1 Structure of the product manual
In this manual, you will find all the descriptions of the parameters and communication objects as well as
application examples.
For the actual configuration of the DALI system you will require the Software Tool. This Software Tool is
designed exclusively for working with ABB i-bus®KNX devices. A description can be found in the online
help for the tool.
1.1.1.1 Software Tool
A Software Tool is available for DALI commissioning (changing DALI short addresses and DALI group
assignment).
This Software Tool can be downloaded free of charge from our homepage (www.abb.com/knx).
Other test and analysis functions are also available, depending on the gateway version.
In addition, the Software Tool offers simplified parameter setting for the constant lighting control on the
DALI Light Controller. No ETS is required for the Software Tool. However, to establish a connection
between PC and KNX, Falcon Runtime (version V1.6 and higher, or for Windows 7, V1.8 and higher) must
be installed.
Note
Connecting the Software Tool to the DALI Light Controller has no initial influence on the DALI devices.
Functions like staircase lighting, slave and controller are only deactivated once the system is switched
to configuration mode.
The block and forced operation functions are bypassed so that DALI devices are clearly identifiable
during commissioning. However the block and forced operation functions continue to run in the
background and are reactivated when you exit the Software Tool. But the brightness value set in the
Software Tool remains unaffected by existing forced operations or blocking. Received KNX telegrams
are executed while the connection with the Software Tool is live. This also applies to the staircase
lighting, slave and controller functions. When you exit the Software Tool or select a new DALI device in
the Software Tool, this deactivates the functions again.

ABB i-busKNX
General
DLR/A 4.8.1.1 | 2CDC507128D0202 5
1.1.2 Notes
Notes and safety instructions are represented as follows in this manual:
Note
Tips for usage and operation
Examples
Application examples, installation examples, programming examples
Important
These safety instructions are used as soon as there is danger of a malfunction without risk of damage
or injury.
Caution
These safety instructions are used as soon as there is danger of a malfunction without risk of damage
or injury.
Danger
These safety instructions are used if there is a danger for life and limb with inappropriate use.
Danger
These safety instructions are used if there is a danger to life with inappropriate use.

ABB i-busKNX
General
6 2CDC507128D0202 | DLR/A 4.8.1.1
1.2 Product and functional overview
The group-orientated ABB i-bus®KNX DALI Light Controller DLR/A 4.8.1.1 is a surface mounted device for
installation in suspended ceilings or underfloor. Up to 64 DALI devices that can be controlled in 8 lighting
groups may be connected to a DALI output. The DALI power source for the 64 DALI devices is integrated
into the DLR/A.
Control using KNX is implemented exclusively via 8 lighting groups. Only the first 4 lighting groups can be
used for direct constant lighting control combined with 4 Light Sensors LF/U 2.1. Using the function Slave,
any number of lighting groups can be assigned to a master, e.g. controller. A brightness value offset is
available for a slave, e.g. a second lighting strip, to utilize a brightness value that deviates from the master
for every controller group (master). The offset can, for example, be time-controlled or switched off or on
with KNX using an outdoor brightness sensor, so that the room is always lit with the optimum level of
brightness. Furthermore, the function Staircase lighting is available. As an option, the constant lighting
control can be combined with the function Staircase lighting.
Furthermore, setting of 14 light scenes is possible, which can be recalled or stored via 8 bit or 1 bit KNX
telegrams.
The DALI devices connected to the DALI output (max. 64) can also be controlled or recalled (broadcast)
together. This is also possible without previous commissioning (group assignment) via the KNX.
Information relating to a lamp and/or ballast malfunction is available individually for a lighting group or for a
DALI device on the KNX. DALI error messages can be inhibited on the KNX with the assistance of a KNX
communication object.
Via a Test button, connected DALI devices can be commonly (by broadcast) turned on or off for testing.
The brightness value (0…100 %) of the ballast after ballast supply voltage recovery (power on level) is
programmable. The initial DALI address assignment occurs automatically via the DALI Light Controller.
This means that when replacing a DALI device, where DALI addresses are assigned without any gaps the
new DALI device is automatically brought into operation without the need for any auxiliary tools. This
function can be vetoed via a parameter in the application.
Readdressing of the DALI devices and the assignment of the 64 DALI devices into 8 lighting groups is
implemented in the ETS independent Software-Tool, so that for example a facility manger without ETS
knowledge is capable of exchanging and reassigning DALI devices should maintenance be required. Error
states of the individual DALI devices and/or lighting groups are represented graphically. Furthermore,
commissioning of the constant lighting control is simplified. DALI addresses and group assignments can
be deleted and devices can be reset to their supplied state.
The setting of the parameters and allocation of the group addresses is implemented with the Engineering
Tool Software ETS. The most up-to-date version should be used.

ABB i-busKNX
General
DLR/A 4.8.1.1 | 2CDC507128D0202 7
The application offers a wide range of functions:
Switching, dimming, setting of brightness values including status feedbacks
Programming of individual maximum and minimum dimming limit values (dimming thresholds)
Status response of lamps and/or ballast malfunctions
Coded error checks for each of the individual 64 DALI devices
Different dimming speeds for switching, setting brightness and dimming
Reaction on DALI and KNX bus voltage failure and recovery
Programming of the brightness value (power on level) after a ballast supply voltage recovery
Individual burn-in of lighting groups
Block function and forced operation
Internal master/slave control in the DLR/A or via communication object
For every Light Controller a brightness offset that can be activated for a second lighting strip via KNX
14 independent light scenes, which can be recalled or stored via 1 bit or 8 bit telegrams
Function Staircase lighting including warning

ABB i-busKNX
General
8 2CDC507128D0202 | DLR/A 4.8.1.1
1.3 DALI principles for the DLR/A
ABB Stotz Kontakt GmbH currently has 6 KNX-DALI devices in the ABB i-bus®KNX range, for integration
of DALI interfaces into a KNX building installation. Independent of additional functions such as constant
lighting control, every device has its strengths, which become obvious with the different project types.
In the following table, the fundamental technical differences between the DALI controls are compiled. This
manual deals primarily with group-orientated DALI control that is supported in the DLR/A. A detailed
description of the DALI Gateway DG/S specific functions can be found in the product manuals of the DALI
Gateway.
Property
DG/S 8.1
Central
control
DG/S 1.1
Individual
control
DG/S 1.16.1
Group
control
DGN/S 1.16.1
Group
control
DLR/S 8.16.1M
Group
control
DLR/A 4.8.1.1
Group
control
Design
MDRC
MDRC
MDRC
MDRC
MDRC
SM
Mounting width (1 space unit =
18 mm)
6 space units
4 space units
4 space units
4 space units
6 space units
220x147x50 mm
DALI outputs
8 (A…H)
2 (A, B)
1 (A)
1 (A)
1 (A)
1 (A)
Light Sensor (LF/U 2.1) inputs
-
-
-
-
8
4
DALI equipment (ballast) per
gateway (IEC62386-101)
128 (max. 16 per
output)
128 (max. 64 per
output)
64
64 (ballasts and
emergency
lighting converter)
64
64
DALI emergency lighting
converter (IEC62386-202)
-
-
-
64
-
-
Lighting groups per Gateway
8 (installation)
A: max. 255 (KNX)
B: 1
161) (DALI)
16 (DALI)
16 (DALI)
8 (DALI)
Lighting groups
established via
cable installation
A: KNX
B: Cable installation
DALI
DALI
DALI
DALI
DALI devices (e.g. ballasts) per
lighting group
16 max.
A: 64 max.
B: 64 max.
64 max.
64 max.
64 max.
64 max.
DALI addressing
not necessary
A: 64 Individual
B: 64 individual
64 individual
64 individual
64 individual
64 individual
Number of DALI telegrams per
KNX telegram of the group
1 telegram
A: max. 64 telegrams
B: 1 telegram
1 telegram per
group
1 telegram per
group
1 telegram per
group
1 telegram per
group
Power supply to KNX processor2)
via
KNX
KNX
KNX
KNX
KNX
KNX
DALI-voltage3)
integrated power
supply
integrated power
supply
integrated
power supply
integrated power
supply
integrated power
supply
integrated power
supply
1) Overlapping DALI groups are supported, i.e. a DALI device may belong to several DALI groups.
2) KNX programming possible if KNX-voltage supplied. Gateway supply voltage for KNX-programming is not required.
3) A Gateway supply voltage (85…265 V AC or 110…240 V DC) is prerequisite.

ABB i-busKNX
General
DLR/A 4.8.1.1 | 2CDC507128D0202 9
1.3.1 DALI group control
The ABB i-bus®KNX DALI Light Controller DLR/A 4.8.1.1 provides the option of individually addressing 64
DALI devices on a DALI output and making them available via 8 lighting groups on the KNX. The
advantage of this concept is that at any time the 64 DALI devices can be assigned individually and without
a change to the installation to a lighting group. As a result, maximum flexibility is retained until final
acceptance or when a change is required later to the room usage. At the same time, the programming
effort in ETS is considerably reduced by the assignment of 64 individual devices into 8 lighting groups.
Furthermore, the programming effort can also be reduced using the copy and exchange function of lighting
groups in the DLR/A.
The Light Sensor LF/U 2.1 required for constant lighting control can be assigned to one of the first 4 DALI
lighting groups via ETS. The registered brightness values are used in the DALI Light Controller for
calculation of the control values. The calculated control value is sent directly, without any additional KNX
bus communication, to the assigned DALI lighting group. Using master/slave operation, further lighting
groups can be integrated directly in the DLR/A or indirectly via the communication objects on the KNX.
For every lighting group, the DALI Light Controller can send the status of the lighting group on the KNX.
Furthermore, it is possible to read the fault status of every single DALI device individually via the KNX.
Coded telegrams are available for this purpose.

ABB i-busKNX
General
10 2CDC507128D0202 | DLR/A 4.8.1.1
The following representation clarifies the method of function of the group-orientated DALI Light Controller
DLR/A 4.8.1.1:
Note
If a DALI device is assigned to several DALI groups, this is referred to as overlapping groups. This
function is not supported.

ABB i-busKNX
Device technology
DLR/A 4.8.1.1 | 2CDC507128D0202 11
2 Device technology
DLR/A 4.8.1.1
LF/U 2.1
The ABB i-bus®KNX DALI Light Controller DLR/A 4.8.1.1 is a KNX device surface-
mounted (SM) device for installation in suspended ceilings or underfloor.
The DALI Light Controller can in conjunction with the application program Control
Dim Groups 4f DALI/1 integrate devices with DALI interfaces into a KNX building
installation. The connection to KNX is implemented via a bus connection terminal.
The 4 sensor inputs for the Light Sensor LF/U together with the first 4 lighting groups
of the DALI Light Controller can be used for a constant lighting control.
The DALI output can be used to connect up to 64 DALI devices. The 64 DALI
devices should be assigned into 8 lighting groups with the ETS independent
Software Tool. Control of the 64 DALI devices via KNX is exclusively group-
orientated.
The fault status (lamps and ballasts) of every individual DALI device can be sent via
a coded communication object on the KNX.
In the DLR/A, a staircase lighting time curve can be set. Constant lighting control
can be combined with a staircase lighting time curve, so that constant lighting
control can be implemented during the staircase lighting time curve. The 8 lighting
groups can be integrated into scenes as required. Using a 1 bit or 8 bit KNX scene
telegram, these scenes can then be recalled or stored via the KNX. Furthermore, a
master/slave function with integrated offset is available that can be used to integrate
further lighting groups or dimming actuators into the lighting control.
Using central telegrams, all the DALI devices connected to a DALI output can be
commonly controlled via the KNX (broadcast).
The DLR/A is a DALI control device (master) and requires an AC or DC auxiliary
power supply. The DALI power source for the 64 DALI devices is integrated into the
DALI Light Controller. In order to control the DALI devices manually or via the KNX,
the KNX voltage and the auxiliary voltage (light controller supply voltage) must be
applied. Should one of these voltage sources be absent, the DALI devices can no
longer be controlled. The behavior of the DALI devices on voltage failure can be
parameterized.
All the DALI devices connected can be commonly turned on or off via manual
operation on the device.
2CDC 071 023 S0012
2CDC 071 018 F0008

ABB i-busKNX
Device technology
12 2CDC507128D0202 | DLR/A 4.8.1.1
2.1 DLR/A 4.8.1.1
2.1.1 Technical data DLR/A 4.8.1.1
Supply
light controller supply voltage
100…240 V AC (+10 %/-15 %)
85…265 V AC, 50/60 Hz
110…240 V DC
Power consumption total via mains
Maximum 3.5 W at 230 V AC and max. load1)
Current consumption total via mains
Maximum 15 mA at 230 V AC and max. load1)
Leakage loss total for device
Maximum 1.6 W at 230 V AC and max. load1)
KNX voltage
21…31 V DC
Current consumption KNX
Maximum 10 mA
Power consumption via KNX
Maximum 210 mW
DALI output
Number of outlets
1 to DIN EN 62386 (Part 101 and 102)
The DALI output is a fixed 230 V, i.e.
unintentional application of the light controller
supply voltage will not cause destruction of the
DALI output.
Number of DALI devices
Maximum 64
Number of lighting groups
8
Distance between DLR/A and last DALI device
Cable cross-section 0.50 mm2
0.75 mm2
1.00 mm2
1.50 mm2
100 m2)
150 m2)
200 m2)
300 m2)
Sensor inputs
Light Sensor LF/U 2.1
Number of inputs
Max. cable length per sensor
Detailed information Light Sensor LF/U 2.1,
page 18
4
Per light sensor 100 m, Ø 0.8 mm,
P-YCYM or J-Y(ST)Y cable (SELV),
e.g. shielded KNX bus cable
Connections
KNX, DALI, Light Sensor, line voltage
Plug-in screw terminals:
0.2…2.5 mm2single core or stranded
0.2…2.5 mm2ferrules
0.2…1 mm22 rigid conductors, same cross
section
0.2…1.5 mm² 2 flexible conductors, same cross
section
Tightening torque
Maximum 0.6 Nm
Brightness detection
Lighting control operating range
optimized for 500 Lux.
200 ..1200 Lux for rooms with average furnishing
level degree of reflection 0.5
max. 860 Lux in a very brightly furnished room
(reflection 0.7)
max. 3000 Lux in a very darkly furnished room
(reflection 0.2)
The Lux values are measured values on the
work surface (reference surface) 3).

ABB i-busKNX
Device technology
DLR/A 4.8.1.1 | 2CDC507128D0202 13
Operating and display elements
Button
DALI output test
Button/LED
For assignment of the physical address
LED
Display for operation readiness
LED
For displaying DALI fault, constant light
For displaying test operation, slow flashing
For displaying initialization or more than 64 DALI
devices, quick flashing
Degree of protection
IP 54
Compliant to EN 60 529
Safety class
II
Compliant to EN 61 140
Insulation category
Overvoltage category
Pollution degree
Atmospheric pressure
III to EN 60 664-1
2 to EN 60 664-1
Atmosphere up to 2,000 m
KNX safety extra low voltage
SELV 24 V DC
DALI voltage
Typical 16 V DC (9.5…22.5 V DC)
No-load voltage
Lowest supply current at 11.5 V
Highest supply current
to EN 60 929 and EN 62 386
16 V DC4)
< 160 mA
< 230 mA
Temperature range
Operation
-20 °C…+45 °C
Storage
-25 °C…+55 °C
Transport
-25 °C…+70 °C
Environmental conditions
Humidity
Maximum 95 %, no condensation allowed
Design
Surface mounted device
Screw fixing
Dimensions
147 x 202 x 50 mm (H x W x D)
Mounting Position
as required
Weight
0.66 kg
Housing, color
Plastic housing, halogen-free, gray
Approvals
KNX to EN 50 090-1, -2
EN 62386 (Part 101 and 102)
Certification
DALI
CE mark
In accordance with the EMC guideline and low
voltage guideline
1) Maximum load corresponds to 64 DALI devices at 2 mA each.
2) The length relates to the common DALI control cable.
The maximum values are rounded off and relate to the resistance values. EMC influences are not considered. For this reason, the values should be
considered as absolute maximum values.
3) Rooms are lit up differently by the incidental daylight and the artificial lighting of the lamps. Not all surfaces in the rooms, e.g. walls, floor and
furniture reflect the light, which falls on them, in the same manner. Accordingly, even though there is an exactly calibrated constant lighting control in
daily operation, deviations to the set target value may occur. These deviations may be up to +/- 100 lx should the current ambient conditions in the
room, and accordingly the reflection properties of the surfaces (paper, persons, reorganized or new furniture), differ significantly from the original
ambient conditions at the time of calibration. Deviations may also occur if the light sensor is influenced by direct or reflected light falling on it, which
is not influenced or only slightly influenced by the surfaces in the detection range of the light sensor.
4) Cannot be measured directly on the digital multimeter, as there is not a constant DC voltage due to the DALI telegrams. Measure with an
oscilloscope for correct results. One exception is the KNX download phase. In this phase no DALI telegrams are sent, whereby the DALI voltage is
constantly present on the DALI output.

ABB i-busKNX
Device technology
14 2CDC507128D0202 | DLR/A 4.8.1.1
Note
The DALI gateway conforms to the SELV properties to IEC 60 364 4 41 (DIN VDE 0100 410).
DALI does not need to feature SELV properties, and it is possible to route the DALI control lines
together with the mains voltage on a multi-core cable.
All-pole disconnection must be ensured in order to avoid dangerous touch voltages which originate from
feedback from differing phase conductors.
Installation must be performed so that both DALI lines and lines carrying mains voltage are
disconnected when an area is disconnected.
Device type
Application
Max. number of
Communication objects
Max. number of
group addresses
Max. number of
associations
DLR/A 4.8.1.1
Control Dim Groups 4f DALI/1*
212
254
255
* … = current version number of the application. Please observe the software information on our homepage for this purpose.
Note
The ETS and the current version of the device application are required for programming.
Editing parameters with ETS2 is not possible!
The current application program can be found with the respective software information for download on
the Internet at www.abb.com/knx. After import in the ETS, the application is available under
ABB/Lighting/Light Controller/Control Dim Groups 4f DALI/1.
The device does not support the locking function of a KNX device in the ETS. If you inhibit access to all
devices of the project with a BCU code, it has no effect on this device. Data can still be read and
programmed.

ABB i-busKNX
Device technology
DLR/A 4.8.1.1 | 2CDC507128D0202 15
2.1.2 Connection schematic DLR/A 4.8.1.1
1
Labeling area
8
Terminal clamp Rated voltage OUT
2
Button Programming KNX
9
LED Operation (green)
3
LED Programming (red)
10
LED Fault (yellow)
4
Connection terminal KNX
11
Button DALI
5
Connection terminal DALI
12
Terminal clamp Light Sensor LF/U
6
Terminal clamp Rated voltage Ballast
13
Light Sensor LF/U
7
Terminal clamp Rated voltage IN

ABB i-busKNX
Device technology
16 2CDC507128D0202 | DLR/A 4.8.1.1
Note
When positioning the Light Sensor LF/U in the room, it is important to ensure that the individual control
circuits cannot interfere with one another. The LF/U should be mounted above the area, in which the
actual lighting intensity is measured.
The luminaires or sunlight may not shine directly into the brightness sensor. Pay attention to
unfavorable reflections, for example, from mirrored or glass surfaces.
The white fiber-optic rod can limit the detection range and reduce the lateral lighting sensitivity to
external lighting sources.
Note
If the LF/U is not connected to the DLR/A, a DC voltage of a few mV can be measured directly with a
multi-function measurement device. The measured value is between 0 mV (absolute darkness) and a
few 100 mV depending on the brightness. If 0 mV is also measured at normal brightness, this is due to
an open circuit, short circuit or inverse polarity fault or a defective sensor.

ABB i-busKNX
Device technology
DLR/A 4.8.1.1 | 2CDC507128D0202 17
2.1.3 Dimensional drawing DLR/A 4.8.1.1
2CDC 072 025 F0012

ABB i-busKNX
Device technology
18 2CDC507128D0202 | DLR/A 4.8.1.1
2.2 Light Sensor LF/U 2.1
LF/U 2.1
The ABB i-bus®KNX Light Sensor LF/U 2.1 is a brightness sensor for closed rooms. The
light sensor is mounted in a standard installation box in the ceiling. The cover (white) of the
sensor is stuck firmly onto the device. The complete unit is then screwed into a flush-type
box.
Up to 4 Light Sensors LF/U 2.1 can be connected to a DALI Light Controller DLR/A
4.8.1.1. The light sensor measures brightness values in closed rooms. When combined
with the detected values, the DLR/A is used for constant lighting control. It is possible to
combine the brightness values from several Light Sensors for the calculation of an
individual control circuit. It is thus possible to implement control of the lighting in rooms
with difficult lighting conditions.
The electrical connection of the LF/U to the DLR/A is undertaken with a twin core MSR
cable (SELV), e.g. KNX bus cable. The total length of this cable may not exceed 100 m.
The LF/U is supplied with a Plexiglas rod, which snaps into the sensor housing. The
registration area can be limited with the Plexiglas rod with the white coating.
2.2.1 Technical data LF/U 2.1
Supply
SELV
Implemented via DLR/A 4.8.1.1
Connections
On the DLR/A 4.8.1.1
1 connecting terminal white/yellow
(connecting terminals are supplied with the
device)
Max. cable length per sensor
per sensor 100 m, Ø 0.8 mm,
P-YCYM or J-Y(ST)Y cable (SELV),e.g.
shielded KNX bus cable
Brightness detection
Lighting control operating range
optimized for 500 Lux.
200..1200 Lux for rooms with average furnishing
level degree of reflection 0.5
max. 860 Lux in a very brightly furnished room
(reflection 0.7)
max. 3000 Lux in a very darkly furnished room
(reflection 0.2)
The Lux values are measured values on the
work surface (reference surface)1).
Optimum installation height
2…3 m
Degree of protection
IP 20
To EN 60 529
Safety class
II
To EN 61 140
Isolation category
Overvoltage category
Pollution degree
Atmospheric pressure
III to EN 60 664-1
2 to EN 60 664-1
Atmosphere up to 2,000 m
2CDC 071 018 F0008