Technical application guide
www.osram.com
DALI
StepDIM
AstroDIM
PRESENCE
CLO
Ext. NTC
MainsDIM
6 kV
(DIF)
6 kV
(COM)
01/2016
Technical application guide
4DIMLT2 LED drivers
Light is OSRAM
4DIMLT2 LED drivers | Contents
Contents
1 Introduction
03
1.1 OSRAM LED drivers with 4DIM functionality
for outdoor and industrial applications
4 Additional information
28
4.1 Insulation
28
03
4.2 Cable preparation
28
1.2 4DIMLT2 product family
04
4.3 Incorrect wiring on the output side
29
1.3 Nomenclature
06
4.4 Input overvoltage
29
1.4 Operating windows
06
4.5 Surge protection
29
5 Programming
30
1.4.1 Supported LEDs
07
1.4.2 Current foldback
07
2 Features
08
2.1 Operating current
08
2.1.1 Fixed current mode
08
2.1.2 LEDset2 mode
08
2.1.3 Tuning factor
10
2.2 Thermal derating and protection
10
2.2.1 External temperature sensor
10
2.2.2 Internal LED driver temperature protection
11
2.3 Constant lumen function
12
2.4 Lamp operating counter
12
2.5 End of life
12
2.6 OEM key
13
3 Operating modes
14
3.1 On/off operating mode
14
3.2 AstroDIM feature
15
3.2.1 Wiring and feature activation
15
3.2.2 Time-based mode
16
3.2.3 Astro-based mode
17
3.2.4 Presence detection in AstroDIM mode
20
3.3 StepDIM feature
21
3.3.1 StepDIM
22
3.3.2 StepDIM inverse
23
3.3.3 StepDIM inverse, autodetect
23
3.3.4 M
ixed StepDIM installations with
3DIM and 4DIMLT2 LED drivers
24
3.4 MainsDIM feature
25
3.5 DALI operating mode
26
3.6 DC operation feature (in preparation)
27
Please note:
All information in this guide has been prepared with great
care. OSRAM, however, does not accept liability for pos­
sible errors, changes and/or omissions. Please check
www.osram.com or contact your sales partner for an updated copy of this guide. This technical application guide
is for information purposes only and aims to support you
in tackling the challenges and taking full advantage of all
opportunities the technology has to offer. Please note that
this guide is based on own measurements, tests, specific
parameters and assumptions. Individual applications may
not be covered and need different handling. Responsibility
and testing obligations remain with the luminaire manu­
facturer/OEM/application planner.
2
4DIMLT2 LED drivers | Introduction
1 Introduction
1.1 OSRAM LED drivers with 4DIM functionality
for outdoor and industrial applications
Long lifetime, low maintenance costs and high efficiency
are very important for outdoor and industrial applications.
OPTOTRONIC® LED drivers for outdoor applications meet
these requirements and unlock the full potential of LEDbased light sources.
Thanks to the high flexibility of the programmable
OPTOTRONIC® 4DIMLT2 LED drivers, LED luminaire systems can be optimally adapted to the required conditions
and their cost can be optimized. With the four integrated
dimming functions (4DIM), significant energy savings and
a reduction of greenhouse gas emissions can be achieved.
The standardized DALI interface allows for the simple integration into telemanagement systems (for example with the
OSRAM Street Light Control system) and also a harmonized control of the output light level in contrast to a 0–10 V
interface. Moreover, these LED drivers already fulfill the new
stand-by requirements that will become effective in Europe
in 2016.
Due to the large operating window (voltage/current) of
these LED drivers, both OSRAM LED modules for outdoor
applications and customer-specific LED modules can be
operated. This also means that the overall amount of
different LED drivers on stock can be kept low and that
the overall complexity of luminaire maintenance over the
entire life cycle can be reduced.
With the LEDset2 interface, OSRAM has created a new
path towards standardizing the communication between
the LED driver and the LED modules. Without reprogramming, LEDset2 ensures optimal efficiency, a high level of
­reliability and the adaptability of the LED drivers to the
­latest LED technologies.
Finally, due to integrated overvoltage protection, LED
­drivers with 4DIM functionality also set a new standard
against common mode surges of up to 10 kV (single pulse)
for class I and II luminaires.
3
4DIMLT2 LED drivers | Introduction
1.2 4DIMLT2 product family
The 4DIMLT2 product family consists of four different output power classes of up to 165 W. All four types have the
same 4DIM dimming capabilities and the new multi-vendor
LEDset2 interface. They can be programmed via the
Tuner4TRONIC® software. The following overview shows
the main features of these new LED drivers.
Note:
The technical data of the OT 165/170-240/1A0 4DIMLT2 E
are preliminary. For design-in, please consult your OSRAM
sales contact.
Table 1: Family overview
Product name
OT 40/120-277/1A0
4DIMLT2 E
OT 60/170-240/1A0
4DIMLT2 E
OT 90/170-240/1A0
4DIMLT2 E
OT 165/170-240/1A0
4DIMLT2 E
Maximum power
40 W
60 W
90 W
165 W
Input voltage L/N
120 V, 220–240 V, 277 V
220–240 V
220–240 V
220–240 V
Input voltage SD/N
220–240 V, 277 V 1)
220–240 V 2)
220–240 V 2)
220–240 V 2)
Output current range
70–1050 mA
70–1050 mA
70–1050 mA
120–1050 mA 3)
Surge (dif/com)
6/8 kV
6/8 kV
6/8 kV
6/8 kV
SELV
SELV
Double
Double
Double
Double
Double
Double
General
Insulation
(primary/secondary)
Insulation of casing
Stand-by power
Dimming features
DALI
0–10 V
DALI
0-10 V
StepDIM (SD(2))
StepDIM
StepDIM inverse (SD(2))
StepDIM
AstroDIM (astro-based)
AstroDIM
AstroDIM (time-based)
AstroDIM
MainsDIM
MainsDIM
Presence detection
Not supported
Not supported
Not supported
Not supported
PRESENCE
Other features
Constant lumen function
Fit for SMART GRID
CLO
SMART
GRID
LEDset2
External NTC
Ext. NTC
Programming software
Tuner4TRONIC ®
1) O
T 40/120-277/1A0 4DIMLT2 E: Only allowed for single-phase systems with 277 VAC, suitable for three-phase systems with 220–240 VAC
2) S
uitable for three-phase systems with 220–240 VAC
3) Minimum physical dimming current: 70 mA
4
4DIMLT2 LED drivers | Introduction
DALI
LEDset (Generation 2)
DALI
Thanks to their DALI interface, 4DIMLT2 LED drivers can be
integrated into telemanagement systems and operated with
the OSRAM Street Light Control system. Bidirectional
­communication and the query of status information from
the LED driver are also possible via DALI.
StepDIM/StepDIM inverse
The new generation LEDset2 is an improved LED module
interface for the combination of single or multiple LED
modules with one LED driver via a single analog control
line. This interface enables external current setting and
temperature monitoring. The LEDset2 interface has no
auxiliary supply and is not compatible with LEDset
­(Generation 1). LEDset2 has an absolute current coding,
while LEDset (Generation 1) only has a relative one.
StepDIM
External temperature sensor
Dimming via an external control phase: Predefined dimming
levels can be varied via the Tuner4TRONIC® software and
the polarity of the phase. The SD/SD2 port also allows
­control via a mains-powered presence sensor.
AstroDIM/presence detection
AstroDIM
PRESENCE
Automatic dimming via an integrated timer (no real-time
clock): Five independent dimming levels and zones can be
set with the Tuner4TRONIC® software. Brightness variation
is possible in combination with an external presence sensor.
MainsDIM
MainsDIM
Ext. NTC
This feature allows the temperature protection of the LED
module or the complete luminaire in hot ambient temperatures via an external sensor (e.g. NTC, negative temperature coefficient resistor). The derating can be modified via
the Tuner4TRONIC® software.
Integrated overvoltage protection
6 kV
EQUI
(DIF)
6 kV
(COM)
The 4DIMLT2 drivers have an integrated overvoltage
protection of up to 6 kV for differential and 8 kV for common
mode overvoltages. They are also capable to withstand
one single 10 kV common mode pulse. The protection
­levels are also applicable for the StepDIM port.
Dimming via mains voltage amplitude: This feature is often
used in combination with magnetic ballasts in outdoor
applications. The dimming behavior can be set via the
Tuner4TRONIC® software.
CLO (constant lumen output)
CLO
The decrease in the luminous flux of an LED module can be
compensated over its entire lifetime via a preprogrammed
current curve. This not only ensures stable lighting but also
saves energy and increases the lifetime of the LEDs.
Fit for SMART GRID
SMART
GRID
With this feature, the power consumption and operating
hours (resettable) of the LED module can be monitored.
Additional advantage: “Fit for SMART GRID” can also
provide better analysis of the lighting, thus ensuring safe
operation of the system.
5
4DIMLT2 LED drivers | Introduction
1.3 Nomenclature
The product name of each OPTOTRONIC® 4DIMLT2 LED
driver is defined as shown below.
Figure 1: OT 40/120-277/1A0 4DIMLT2 E
Figure 2: Overview of 4DIMLT2 operating windows
OT 165 4DIMLT2 E
OT 60 4DIMLT2 E
OT 90 4DIMLT2 E
OT 40 4DIMLT2 E
Output voltage [V]
Nominal range
Dimming range
280
240
200
160
120
OT:OPTOTRONIC® LED driver
40:
Power class: 40 W
120-277: Input voltage range (L/N): 120–277 V
1A0:
Max. output current: 1050 mA
4DIM:
4DIM functionality (DALI, StepDIM, AstroDIM, MainsDIM)
LT2:
LEDset2 (LED module interface)
E:
For exterior use under specific conditions
1.4 Operating windows
The OPTOTRONIC® 4DIMLT2 LED driver family is split up
into four different power classes to provide the best suitable power supply for different applications. The nominal
output current of 350–1050 mA is available in the following
power packages.
Table 2: 4DIMLT2 maximum allowed output power
Type
Pmax
OT 40/120-277/
1A0 4DIMLT2 E
40 W
OT 60/170-240/
1A0 4DIMLT2 E
60 W 1)
OT 90/170-240/
1A0 4DIMLT2 E
90 W 1)
ta
V in (nominal)
-40 ...+60 °C
220–240 VAC
-40 ...+55 °C
120/277 VAC
-40 ...+55/60 °C 2) 220–240 VAC
-40 ...+55 °C
220–240 VAC
80
40
0
0.2
0.4
0.6
0.8
1.0
Output current [A]
Table 3: 4DIMLT2 operating range
Type
Minimum Minimum Maximum Minimum Maximum
dimming nominal nominal output
output
current
current
current
voltage
voltage
OT 40/
120-277/
70 mA
1A0
4DIMLT2 E
350 mA
1050 mA
18 V
56 V
OT 60/
170-240/
70 mA
1A0
4DIMLT2 E
350 mA
1050 mA
30/35 V 1)
115 V
OT 90/
170-240/
70 mA
1A0
4DIMLT2 E
350 mA
1050 mA
57 V
186 V
OT 165/
170-240/
120 mA 2)
1A0
4DIMLT2 E
350 mA
1050 mA
90 V
285 V
1) 3
0 V between 70 and 700 mA, 35 V between 700 and 1050 mA
OT 165/170-240/
165 W 1), 3)
1A0 4DIMLT2 E
-40 ...+55 °C
220–240 VAC
1) F
or an input voltage of 170–190 VAC, the maximum allowed output
2) Minimum physical dimming current: 70 mA
It is possible to operate the driver below the minimum
nominal current through initial setting of the output current.
power is linearly limited to 85 % at 170 VAC starting from 100 % at
190 VAC
2) Ta > 55 °C only allowed for output current ≤ 700 mA
3) 150 W max for currents ≤ 680 mA
Figure 2 gives a complete overview of the possible
4DIMLT2 operating windows.
Warning:
When LED drivers are permanently operated below the
minimum nominal current, it is necessary to ensure compliance with relevant IEC standards (for example mains current distortion and power factor). Please consider that the
certificates are only valid within the nominal output current
range.
6
4DIMLT2 LED drivers | Introduction
1.4.1 Supported LEDs
Table 4 shows how many LEDs can be driven with
one LED driver. The values are based on the following
assumptions:
Vf LED = 3.1 V at 1050 mA and Vf LED = 2.5 V at 70 mA
Table 4: Supported number of LEDs
Type
Minimum number
of LEDs
Maximum number
of LEDs
OT 40/120-277/1A0
4DIMLT2 E
8
18
OT 60/170-240/1A0
4DIMLT2 E
12
37
OT 90/170-240/1A0
4DIMLT2 E
23
60
OT 165/170-240/1A0
4DIMLT2 E
36
90
Warning:
The real number of supported LEDs needs to be checked
according to the minimum and maximum forward voltage
in the worst case conditions. They have to match the minimum and maximum output voltage of the used LED drivers.
The forward voltage of the connected LED module in dimming condition is lower than the forward voltage in nominal
condition but still has to be above the minimum output voltage of the LED driver.
1.4.2 Current foldback
The intelligent 4DIMLT2 family allows a safe start-up of the
system, even if the power consumption or the total forward
voltage of the LED module exceeds the maximum output
power or voltage of the LED driver. In this case, the unit reduces the current until the maximum output voltage [1] or
power [2] is not exceeded anymore. If no stable operating
point is achieved, the unit switches on and off continuously
or switches off completely.
Figure 3: Current foldback (example: OT 40 4DIMLT2 E)
Output voltage [V]
1
2
50
40
30
20
10
0
0.2
0.4
0.6
0.8
1
1.2
Output current [A]
7
4DIMLT2 LED drivers | Features
2 Features
2.1 Operating current
Flexible current setting allows taking advantage of the
continuously improving LED technology and building a
future-proof system. The 4DIMLT2 family offers two
modes for current setting, which can be set via the
Tuner4TRONIC® software:
— Fixed current: Current setting via programmable
interface
— LEDset2: Current setting via the LEDset2 interface
Figure 4: Setting of the operating current
2.1.2 LEDset2 mode
The LEDset2 interface (LEDset generation 2) is a standardized
LED module interface to set the right output current and establish an easy and low-cost temperature protection for the
connected LED module. This multi-vendor interface is suitable for LED modules connected in parallel or series.
Note:
In the following figures, the LED module is displayed in a
simplified way. The real number of LEDs depends on the
output voltage of the driver.
Figure 6: LEDset2 parallel connection
Luminaire 1
4DIMLT2 E
L
N
SD(2)
DA
DA
LED+
LED-
LED-
Rset
It is possible to set a current lower than the minimum rated
current (see warning in chapter 1.4). This operating current
is indicated by a red number as shown in figure 5.
Figure 5: Setting of a current lower than the
minimum rated current
LEDset
2.1.1 Fixed current mode
To use the fixed current mode, it has to be selected in the
Tuner4TRONIC® software. The minimum and maximum rated output currents are displayed according to the selected
LED driver. The output current of the LED driver can be set
by changing the value in the “Operating Current” field.
NTCset
Without any resistor connected to the LEDset2 interface,
the factory default current is 700 mA. As soon as the LED
driver detects a resistor value for more than 3 seconds
within the valid resistor range of 2.37 kΩ (1050 mA) and
24.9 kΩ (200 mA), it switches to the LEDset2 mode.
Rset
LED module
LED module
Figure 7: LEDset2 series connection
Luminaire 1
4DIMLT2 E
L
N
SD(2)
DA
DA
LED+
LED-
LED-
LEDset
NTCset
Rset
Rset
LED module
LED module
8
4DIMLT2 LED drivers | Features
The output current of the LED driver can be set using an
externally connected resistor (min. power rating 50 mW,
max. tolerance 0.5 %). This provides the possibility to set
the LED current manually without the need for an additional
programming of the LED driver. With a resistor mounted on
the LED module as shown in figure 8, the correct LED current can be set automatically. With this resistor, the desired
current for the LED module is set according to the used
LED bin and needed lumen output, offering a real plugand-play solution and making the system future-proof.
The LEDset2 coding for the 4DIMLT2 family is shown in the
following graph.
Figure 10: LEDset2 coding
1 Undefined range
Output current [mA]
2 Nominal range
1000
800
Figure 8: Rset connection
Luminaire 1
1
600
4DIMLT2 E
400
L
N
SD(2)
DA
DA
LED+
LED-
LED-
LEDset
NTCset
2
200
0
1
10
100
Rset [kΩ]
Assuming a tuning factor of 100 %, the corresponding
output current can be calculated with the following formula
within the valid resistor range (Rset = 2.37–24.9 kΩ):
Rset
I out [A] =
LED module
5 V
Rset [Ω]
x 1000
The undefined range should be avoided because the
output current of the LED driver is not predictable.
To achieve a more accurate current setting, the second
LED- terminal of the LED driver can be used as shown in
figure 9. This increases the accuracy by roughly 0.5 %.
Table 5 gives an overview of commonly used current
values and the appropriate resistor values.
Figure 9: Rset connection with higher accuracy
Table 5: LEDset2 resistor coding (tuning factor = 100 %)
Luminaire 1
I out [mA]
reference
4DIMLT2 E
R set [kΩ]
[tolerance ≤ 0.5 %]
I out [mA]
nominal
L
N
SD(2)
DA
DA
LED+
LED-
LED-
LEDset
NTCset
Open circuit
> 71
70
350
14.0 (E192)
357
500
10.0 (E192)
500
700
7.15 (E192)
699
1050
4.64 (E192)
1050
Undefined
0.9–2.37
1050/70
Short circuit
< 0.9
70
For further details, please consult the LEDset2 application
guide, which can be downloaded at www.osram.com\ledset.
Rset
LED module
9
4DIMLT2 LED drivers | Features
2.1.3 Tuning factor
In combination with the LEDset2 operating mode, the tu­
ning factor provides a real added value. To minimize the
number of LED module variants, the tuning factor can be
used to adapt the light output of standardized LED modules (e.g. Zhaga modules). The normalized luminous flux
of the module can be set to the required light output of the
application.
Output current [mA] = LEDset2 current [mA] x tuning factor [%]
Warning:
In case the tuning factor is set higher than 100 %, the reliability and safety of the module needs to be checked. In
case the set operating current multiplied with the tuning
factor exceeds the maximum nominal output current of the
LED driver, the LED driver will limit the output current to the
maximum nominal output current.
Figure 11: Tuning behavior
LEDset2 current
1050 mA
2.2 Thermal derating and protection
700 mA
500 mA
Example:
If 7000 lm are needed, a standardized 8000-lm LED module with a tuning factor of 87 % can be used to achieve this
requirement. Every time the 8000-lm module is replaced
(also with a different default current), the current of the LED
driver (light output of the LED module) will be reduced by
87 % and the system is adapted to roughly 7000 lm. This
enables an easy replacement in the field without reprogramming, while having a low number of LED module variants on stock.
500 mA
350 mA
0 mA
Time
Tuning factor
150 %
2.2.1 External temperature sensor
By connecting an external temperature sensor to the
NTCset port of the 4DIMLT2 LED driver, a very easy and
cost-efficient temperature protection of the LED
module can be realized. As an example, an NTC (negative
temperature coefficient resistor) can be mounted on the
LED module and connected as shown in figure 12. In case
the thermal protection feature is enabled and nothing is
connected to the NTCset terminal, the driver delivers 100 %
light output.
Figure 12: NTC connection
120 %
Luminaire 1
100 %
4DIMLT2 E
L
N
SD(2)
DA
DA
LED+
LED-
LED-
0 %
LEDset
NTCset
50 %
Time
Output current
NTC
1050 mA
700 mA
LED module
600 mA
500 mA
350 mA
0 mA
Time
Two different thermal protection modes can be selected in
the Tuner4TRONIC® software:
—— Resistor-based mode (factory default)
—— Temperature-based mode
10
4DIMLT2 LED drivers | Features
Resistor-based mode
The resistor-based mode is activated by default. If the connected resistor sensor value falls in the range between 6.3
and 5.0 kΩ, the output current is continuously lowered
down to 50 %. If the value falls further below 4.3 kΩ, the
output is switched off completely until the sensor reaches
5.0 kΩ again. The complete switch-off can be deactivated
by clicking on the “Shut Off” check box.
After selecting the correct sensor type in the Tuner4TRONIC®
software, the favored temperature behavior can be programmed as shown in figure 13.
Figure 13: NTC programming
In this mode, a common NTC can be used to achieve a
fixed thermal protection as shown in table 6. The specified
temperatures can vary, depending on the used NTC component and the corresponding tolerances.
Figure 14: NTC sample behavior
Table 6: Overview of standard NTCs
NTC type
Start derating
temperature
[6.3 kΩ]
End derating
temperature 1)
[5.0 kΩ]
Shut-off
temperature
[4.3 kΩ]
22 kΩ
56 °C
62 °C
67 °C
33 kΩ
66 °C
72 °C
77 °C
47 kΩ
75 °C
83 °C
87 °C
68 kΩ
85 °C
92 °C
97 °C
1) Switch-on temperature in case the temperature has reached the
shut-off condition
Temperature-based mode
In this mode, the derating behavior can be defined in temperature values if one of the NTCs listed below is used.
Table 8: Supported value ranges
Parameter
Min.
Max.
Increment
Table 7: Sensor types in temperature-based mode
Resistor range
1.0 kΩ
25 kΩ
25 Ω
Sensor types
Code
Murata 10K NTC
NCP18XH103J03RB
Murata 15K NTC
NCP18XW153J03RB
Murata 15K NTC + 390 Ω
NCP18XW153J03RB in series of 390 Ω
EPCOS B57423V2473Hxxx
B57423V2473Hxxx
Temperature range
40 °C
95 °C
1 °C
Derating level
10 %
100 %
1%
Warning:
The derating level cannot fall below the minimum physical
dimming level of the LED driver, even if the software displays a lower value.
2.2.2 Internal LED driver temperature protection
4DIMLT2 LED drivers also have a reversible internal thermal
protection. If the maximum tc temperature is exceeded, the
LED driver starts derating the output current down to 30 %
for AC supply voltage. If the temperature keeps increasing,
the LED driver switches off. It switches back on at the maximum allowed tc temperature.
Note:
To achieve the lifetime data of the driver, the luminaire
manufacturer needs to ensure that the maximum tc
temperature is never exceeded.
11
4DIMLT2 LED drivers | Features
2.3 Constant lumen function
Over the lifetime of an LED module, the light output drops
due to the aging process of the LEDs. To achieve a constant light output of the module, the LED driver stores the
operating hours of the LED module and increases the
output current to react to the light output drop. To set this
feature according to the applied LED module, the Tuner4TRONIC® software can be used as shown, for example,
in figures 15 and 16.
Figure 17: Constant lumen function –
possible savings
Figure 15: Constant lumen programming table
The exact values for programming the constant lumen
function for the connected LED module need to be obtained from the corresponding LED supplier.
Figure 16: Constant lumen programming graph
(operating time = 10 kh)
2.4 Lamp operating time
The LED driver monitors the operating hours of the connected LED module. In case of a fault of the LED driver or
module, the lamp operating time has to be (re)set accordingly with the Tuner4TRONIC® software. The lamp operating time also has an influence on the constant lumen function and the “end of life” feature. It can be set using the
Tuner4TRONIC® software as shown in figure 18.
Figure 18: Lamp operating time (10 kh)
The output levels have to be steadily increasing from the
beginning to the end.
Warning:
The output level is indicated as a red number if the level is
set higher than 100 %. In this case, the reliability and safety
of the module needs to be checked if the nominal operating
current is exceeded. It is not possible to achieve a higher
output current than the maximum nominal output current
of the LED driver.
2.5 End of life
The LED driver can indicate that a preprogrammed lifetime
of the connected LED module is reached and the module
should be replaced. This function has to be activated in
advance via the Tuner4TRONIC® software. The “end of life”
indication can be programmed as shown in figure 19.
Figure 19: End of life setting
The output level cannot fall below the minimum physical
dimming level of the LED driver, even if the software displays a lower value.
By clicking the “Savings” button, the estimated energy
savings are calculated as shown in figure 17. This value
is only an estimation because it does not consider, for
example, the LED Vf behavior and efficiency of the driver.
If the specified lifetime is reached, the LED driver indicates
this through a lower light output during the first 10 minutes
of the switch-on period, as shown in figure 20.
12
4DIMLT2 LED drivers | Features
Figure 20: “End of life” behavior without switch-on
fade time
Figure 22: “End of life” behavior with short switch-on
fade time
Output level [%]
Output level [%]
Output
current
Output
current
Minimum
dimming
current
Minimum
dimming
current
10 minutes “end
of life” indication
Time
10 minutes “end
of life” indication
Time
Switch-on
fade time
If a switch-on fade time is set, it is overriden by the “end of
life” functionality as shown in figure 21. After 10 minutes,
the output current is set according to the current switch-on
fade time level.
Note:
In DC operation, the “end of life” indication is deactivated
until the next power-on/off cycle or DALI operation.
Figure 21: “End of life” behavior with long switch-on
fade time
2.6 OEM key
By entering the OEM key, all or partial features of the
­4DIMLT2 drivers can be protected. The following features
are locked by selecting the “partial” lock.
—— Constant lumen
—— Operating current
—— Thermal protection
Output level [%]
Output
current
Minimum
dimming
current
10 minutes “end
of life” indication
Time
Switch-on
fade time
If the switch-on fade time is shorter than 10 minutes, the
output current is directly switched to the nominal output
level after the “end of life” indication as shown in figure 22.
By factory default, the drivers are not protected by the
OEM key. Once it is entered, the configuration can only be
reprogrammed with the same OEM key. The valid OEM
code key range is from 0001 to 9999. 0000 is reserved to
indicate a non-protected device. The protection can be
­deactivated in the special rework mode of the Tuner4TRONIC®
­software with a Tuner4TRONIC® pro­duction file containing
no OEM code key.
Note:
Once a wrong OEM key has been entered to reprogram
the driver, the reprogramming gets locked for some seconds
until the code can be entered again.
13
4DIMLT2 LED drivers | Operating modes
3 Operating modes
The operating modes of a 4DIMLT2 LED driver can be
selected using the Tuner4TRONIC® software. Only one
mode can be selected.
Figure 23: Operating/dimming modes
3.1 On/off operating mode
4DIMLT2 LED drivers can also be used in a simple
on/off operating mode. One of the following dimming
modes needs to be selected:
Note:
DALI always has a higher priority than the selected operating mode and can be activated by a valid DALI command in
every mode. After a power-off/on cycle, the LED driver operates in the originally selected dimming mode again.
— StepDIM/AstroDIM/DALI (wiring selection) – DALI and
SD(2) port not connected
— StepDIM (DALI) – DALI and SD(2) port not connected
— DALI – DALI port not connected
The LED driver offers the possibility to select one of the
two dimming modes “StepDIM (DALI)” or “AstroDIM (DALI)”
via external wiring in case the default dimming mode “StepDIM/AstroDIM/DALI (wiring selection)” is set. Please see
chapter 3.2.1 for wiring information.
Note:
Be aware that the parameters set in these operating modes
also have an influence on the behavior of the LED driver in
the on/off operating mode.
Figure 24: Wiring for on/off operation
Luminaire 1
Luminaire 2
4DIMLT2 E
4DIMLT2 E
L
N
SD(2)
DA
DA
LED+
LED-
LED-
LEDset
NTCset
L
N
SD(2)
DA
DA
LED+
LED-
LED-
LEDset
NTCset
LED module
LED module
PE
L1
S1
N
Switching cabinet
14
4DIMLT2 LED drivers | Operating modes
3.2 AstroDIM feature
The AstroDIM feature allows an autonomous dimming without the need for an additional control line. The 4DIMLT2
LED drivers support up to five independent dimming levels
and flexible settings of fade times between the individual
dimming levels.
The LED driver does not have a real-time clock. The internal reference clock is derived from the mains frequency
and the driver detects if it is connected to a 50 Hz or 60 Hz
supply system, assuming a time base of 20 ms or 16.6 ms.
This allows a synchronized switching of all units. In case
of DC operation (see chapter 3.6), the dimming mode is
stopped until the AC voltage is applied again and a poweroff/on cycle is performed.
The output levels can be set to 0 % (OFF) or between 10 %
and 100 % in steps of 1 %.
Warning:
If the output level is set below the minimum physical dimming
level of the LED driver (except OFF), the minimum dimming
current is used. The software still displays the original value.
If the output level falls below the minimum allowed dimming
current, the value is visualized in red.
In addition, switch-on and switch-off fade times can be
programmed at the beginning and the end of a switching
cycle to allow for further energy savings during the twilight
phase. This function is also helpful for installations with a
pedestrian crossing where no specific infrastructure is
available to switch the pedestrian crossing illumination
independently of the rest of the street light illumination.
3.2.1 Wiring and feature activation
There are two ways to activate the AstroDIM mode:
Two different modes for AstroDIM are supported:
— Option 1: By external wiring
Selected dimming mode (factory default):
“StepDIM/AstroDIM/DALI (wiring selection)”
— Option 2: Via the Tuner4TRONIC ® software
Selected dimming mode: “AstroDIM (DALI)” or
“AstroDIM PD (DALI)”
Time-based: The dimming profile defined in the reference schedule is referenced to the switch-on time of the LED
driver.
Astro-based: The dimming profile defined in the reference schedule is referenced to the annual average middle of
the night, which is calculated based on
the theoretical sunrise and sunset times.
For option 1, the AstroDIM feature is activated without the
need for programming. Only a permanent connection between
the L and the SD(2) port of the LED driver is necessary (see
figure 25). If the SD(2) port is not active during the start-up
phase of the LED driver (for 1 s), the StepDIM feature is
activated instead of the AstroDIM feature. Information on
the default dimming profile can be found in the datasheet
of the applied LED driver.
For option 2, the external wiring can be avoided if either the
“AstroDIM (DALI)” or “AstroDIM PD (DALI)” dimming mode is
selected via the software (see figure 26).
Figure 25: Wiring: StepDIM/AstroDIM/DALI (wiring selection)
Luminaire 1
Luminaire 2
4DIMLT2 E
4DIMLT2 E
L
N
SD(2)
DA
DA
LED+
LED-
LED-
LEDset
NTCset
L
N
SD(2)
DA
DA
LED+
LED-
LED-
LEDset
NTCset
LED module
LED module
PE
L1
S1
N
Switching cabinet
15
4DIMLT2 LED drivers | Operating modes
Figure 26: Wiring: AstroDIM (DALI) or AstroDIM PD (DALI)
Luminaire 1
Luminaire 2
4DIMLT2 E
4DIMLT2 E
L
N
SD(2)
DA
DA
LED+
LED-
LED-
LEDset
NTCset
L
N
SD(2)
DA
DA
LED+
LED-
LED-
LEDset
NTCset
LED module
LED module
PE
L1
S1
N
Switching cabinet
3.2.2 Time-based mode
In this mode, the LED driver performs the dimming profile
defined in the reference schedule based on the switch-on
time of the unit. Five independent output levels can be set
for each step. The minimum length of one dimming period
has to be longer than the AstroDIM fade time.
The maximum duration of the schedule is 23 h and 59 min.
If less than five output levels need to be performed, two
sequenced levels have to be set to the same value. The
AstroDIM dimming profile in the time-based mode already
starts after the first power-off/on cycle after programming.
Figure 27: Time-based AstroDIM
Fade timing:
— AstroDIM fade time: Fade time between the different
dimming levels.
— Switch-on fade time: Fade time after the power-on
of the LED driver. The output level at the end of this fade
time is defined by the output level of the corresponding
dimming period.
Table 9: Fade timing parameters
(time-based mode)
Parameter
Min.
Max.
Default
AstroDIM fade time
0, 2 s
8 min
3 min
Switch-on fade time
0, 15 s
60 min
0s
16
4DIMLT2 LED drivers | Operating modes
3.2.3 Astro-based mode
In this mode, the LED driver performs a dimming profile
based on the daily power-on and power-off times. The
dimming schedule is adapted according to the length of
the night.
The Tuner4TRONIC® software calculates the annual average middle of the night based on the theoretical sunrise
and sunset times, which are related to the location selected
in the software. Based on this average middle of the night,
five independent dimming periods can be defined in the
reference schedule. The minimum length of one dimming
period has to be longer than the AstroDIM fade time. Valid
time values can be set between 12:00 pm and 11:59 am.
If less than five output levels need to be performed, two
sequenced levels have to be set to the same value.
The defined dimming profile is already performed after the
second power-off/on cycle after programming.
Figure 28: Astro-based AstroDIM
Fade timing:
— AstroDIM fade time: Fade time between the different
dimming levels.
To achieve further energy savings in the twilight phase, the
switch-on and switch-off fade time can be set to up to 60
minutes.
— Switch-on fade time: Fade time after the LED driver
has been powered on. The output level at the end of
this fade time is defined by the output level of the related
dimming period (step x).
— Switch-off fade time: Fade time prior to the estimated
power-off point. The switch-off fading is performed
down to the minimum dimming current until the LED
driver is switched off externally.
The “schedule by day” in the AstroDIM feature tab calculates the estimated dimming behavior for a specific day
based on the theoretical sunrise and sunset times. If daylight saving has to be considered, the corresponding check
box needs to be ticked. The LED driver itself is not able to
detect summer and winter time and does not have an internal real-time clock.
In case the installation is not powered on and off at the
calculated sunrise and sunset times, the correct values
can be entered in the manual mode as shown in figure 29.
Figure 29: Schedule by day
Table 10: Fade timing parameters
(astro-based mode)
Parameter
Min.
Max.
Default
AstroDIM fade time
0, 2 s
8 min
3 min
Switch-on fade time
0, 15 s
60 min
0s
Switch-off fade time
OFF, 0 s
60 min
OFF
The AstroDIM function in astro-based mode relies on an
intelligent algorithm. It starts after the first valid night and
reaches its maximum precision after 8 valid days. A valid
on-time is defined if the duration of the operation is longer
than 4 hours and shorter than 24 hours.
17
4DIMLT2 LED drivers | Operating modes
Figure 30: Use cases of AstroDIM mode
Output level [%]
The AstroDIM profile is performed after the first valid
on-time.
12 3 45
Mains
Night 1
Night 2
Time
Day 2
Time
On
First
power-on
Off
Day 1
Case A
Output level [%]
Voltage dips of less than 100 ms do not affect the
on-time (case B).
Mains
1 23
45
12 3 45
Night 1
Night 2
Time
Day 1
Day 2
Time
On
Off
Short voltage
dips (< 100 ms)
Case B
Output level [%]
If the on-time of the LED driver is shorter than 4 hours, it
is not saved and therefore not used to calculate the next
on-time (case C).
Mains
1
1 2
12 3 45
Night 1
Night 2
Time
Day 1
Day 2
Time
On
Off
Case C
18
4DIMLT2 LED drivers | Operating modes
Mains
Output level [%]
Without switch-off fade time:
12 3 45
12 3 45
12 3 45
12 3 45
Night 1
Night 2
Night 3
Night 4
Time
Day 1
24 h
24 h
24 h
Time
On
Off
Case D
Mains
Output level [%]
With enabled switch-off fade time:
12 3 45
12 3 45
12 3 45
12 3 45
Night 1
Night 2
Night 3
Night 4
Time
24 h
24 h
24 h
Time
On
Off
Day 1
Case E
If the on-time of the LED driver is longer than 24 hours, it is
not saved and therefore not used to calculate the next ontime.
Note:
If the 4DIMLT2 LED driver is operated longer than 24 hours,
it cannot be assumed that the different dimming level will
start at the same time, because the time base is affected
by the accuracy of the mains frequency over the day, week,
month and year.
19
4DIMLT2 LED drivers | Operating modes
3.2.4 Presence detection in AstroDIM mode
In the “AstroDIM PD (DALI)” dimming mode, it is possible to
override the dimming profile of AstroDIM with the presence
detection settings triggered by an external sensor (e.g. motion or presence sensor) that is connected to the SD(2) port.
The sensor must support the electrical characteristics of
the SD(2) port.
Figure 31: AstroDIM wiring with presence detector
Luminaire 1
Luminaire 2
4DIMLT2 E
4DIMLT2 E
L
N
SD(2)
DA
DA
LED+
LED-
LED-
LEDset
NTCset
L
N
SD(2)
DA
DA
LED+
LED-
LED-
LEDset
NTCset
LED module
LED module
PE
L1
S1
N
SD
Switching cabinet
L
N
L'
Sensor
Figure 32: Presence detection in AstroDIM mode
An active signal at the SD(2) port (PD signal) starts the
presence detection profile, which is defined by the following
four parameters:
— PD level: Output level when the SD(2) port is active.
— Start fade time: Fade time after the SD(2) port has
become active.
— Hold time: Hold time after the SD(2) port is not active
anymore.
— End fade time: Fade time after the hold period.
These parametere can be set using the Tuner4TRONIC®
software as shown in figure 33.
Figure 33: Presence detection configuration
20
4DIMLT2 LED drivers | Operating modes
3.3 StepDIM feature
StepDIM is a one-step dimming mode using an additional
control line or a switched phase (pilot line) to control one
or more light points and set the light output to a preprogrammed light level. The SD level and the fade time can
be set using the Tuner4TRONIC® software.
Table 11: Presence detection parameters
Parameter
Min.
Max.
Default
PD level
OFF, 10 %
100 %
100 %
Start fade time
0, 2 s
8 min
OFF
Hold time
0, 15 s
60 min
OFF
End fade time
0, 2 s
8 min
4 s
There are three different StepDIM operating modes:
—— StepDIM (DALI)
—— StepDIM inverse (DALI)
—— StepDIM inverse, autodetect (DALI)
Warning:
If the output level falls below the minimum physical dimming level, the minimum physical dimming level is used by
the LED driver. The software still displays the original value.
If the output level falls below the minimum allowed dimming
current, the value is visualized in red.
For StepDIM operation, the LED driver is connected to the
mains and a control line or a switched phase. Figure 34
shows the connection for the two different supply voltage
systems.
Figure 34: StepDIM wiring
For 220-240 VAC supply system:
Luminaire 1
Luminaire 2
4DIMLT2 E
4DIMLT2 E
N
L
SD(2)
N
L
LED module
LED module
SD(2)
DA
DA
LED+
LED-
LED-
LEDset
NTCset
L
N
SD(2)
DA
DA
LED+
LED-
LED-
LEDset
NTCset
PE
L1
S1
N
S2
Lx
Switching cabinet
For 277 VAC supply system:
Luminaire 1
Luminaire 2
OT 40 4DIMLT2 E
OT 40 4DIMLT2 E
DA
DA
LED+
LED-
LED-
LEDset
NTCset
L
N
SD(2)
DA
DA
LED+
LED-
LED-
LEDset
NTCset
LED module
LED module
PE
L1
S1
N
S2
Switching cabinet
21
4DIMLT2 LED drivers | Operating modes
The StepDIM application is supported by the following
supply systems:
Singlephase
120 VAC, 60 Hz
–
OT 165/170240/1A0
4DIMLT2 E
OT 90/170240/1A0
4DIMLT2 E
–
–
–
–
–
–
–
–
–
–
–
–
–
Figure 35: StepDIM behavior
–
220–240 VAC, 50/60 Hz
277 VAC, 60 Hz
Threephase
OT 60/170240/1A0
4DIMLT2 E
Supply
system Nominal voltage
OT 40/120277/1A0
4DIMLT2 E
Table 12: SD(2) port usage in different supply systems
3.3.1 StepDIM
If, in the “StepDIM (DALI)” mode, the switch (S2) is closed
and the phase voltage Lx is applied to the SD(2) port (SD
active), the output level is set to the SD(2) level. Leaving the
SD(2) port floating (SD inactive), the output level is set to
the nominal level.
120 VAC, 60 Hz
220–240 VAC, 50/60 Hz
277 VAC, 60 Hz
– Not supported
Supported
The StepDIM port (SD(2)) of the 4DIMLT2 LED driver is triggered by an input current referenced to the neutral (N) and,
if the signal is stable for more than 500 ms, the SD(2) port
fulfills the following electrical characteristics:
Table 13: Electrical characteristics of the StepDIM
port (SD(2))
StepDIM signal
Input current
SD(2) port
Input voltage
SD(2) port (SD(2)-N)
Active (high)
> 2.0 mA peak
or > 196 VAC
Inactive (low)
< 0.5 mA peak
–
In some installations, leakage currents might occur between the different phases due to old or damaged cables,
which have insufficient insulation or high-capacitance
coupling. The unit can be triggered if the leakage currents
exceed the inactive SD(2) input current. False triggering can
be avoided by connecting the SD(2) input to the neutral or
using a bypass capacitance/resistance between SD(2) and N.
— Nominal level: Output level when the SD(2) port is
not active.
— SD level: Output level when the SD(2) port is active.
— Switch-on fade time: Fade time after power-on.
— Start fade time: Fade time after the SD(2) port has
become active.
— Hold time: Hold time after the SD(2) port is not active
anymore.
— End fade time: Fade time after the hold period.
These parameters can be set using the Tuner4TRONIC®
software as shown in figure 36.
Figure 36: StepDIM configuration
Table 14: StepDIM parameters
Parameter
Min.
Max.
Default
Nominal level
OFF, 10 %
100 %
100 %
SD level
OFF, 10 %
100 %
50 %
Switch-on fade time
0, 15 s
60 min
0s
Start fade time
0, 2 s
8 min
3 min
Hold time
0, 15 s
60 min
OFF
End fade time
0, 2 s
8 min
3 min
Warning:
If the output level falls below the minimum physical dimming level, the minimum physical dimming level is used by
the LED driver. The software still displays the original value.
If the output level falls below the minimum allowed dimming
current, the value is visualized in red.
22
4DIMLT2 LED drivers | Operating modes
3.3.2 StepDIM inverse
For the “StepDIM inverse (DALI)” mode, the behavior is
inverted. If the switch (S2) is opened and the SD(2) port is
floating (SD inactive), the output level is set to the SD level.
If a phase voltage is applied to the SD(2) port (SD active),
the output level is set to the nominal level.
Figure 37: “StepDIM inverse” behavior
— Nominal level: Output level when the SD(2) port is
active.
— SD level: Output level when the SD(2) port is not active.
— Switch-on fade time: Fade time after power-on.
— Start fade time: Fade time after the SD(2) port is not
active anymore.
— Hold time: Hold time after the SD(2) port has become
active.
— End fade time: Fade time after the hold period.
3.3.3 StepDIM inverse, autodetect
In the “StepDIM inverse, autodetect (DALI)” mode, the LED
driver automatically detects if it is used in a simple on/off
environment or in a StepDIM inverse installation. If a valid
“high” signal (SD active) is detected at the SD(2) port for
longer than 20 minutes, the LED driver automatically
switches to the “StepDIM inverse” mode.
Figure 38: “StepDIM inverse, autodetect” behavior
Level [%]
SD nominal level
SD level
> 20 min
Mode
Mains
SD
< 20 min
On/off mode
StepDIM inverse mode
23
4DIMLT2 LED drivers | Operating modes
This feature allows minimizing the number of different luminaire configurations and keeps the stock lean.
Example:
In some parts of StepDIM installations (e.g. roundabouts
or pedestrian crossings), the light output of the installed
fixtures should not be reduced during the night. With the
“autodetect” feature, all LED drivers can be programmed
with the same settings: While the on/off fixtures (SD(2) port
not connected) still provide the full light output, the others
perform the requested dimming profile.
3.3.4 Mixed StepDIM installations with 3DIM and
4DIMLT2 LED drivers
Due to improvements in the circuit robustness of the
StepDIM port of the 4DIMLT2 LED drivers compared to
the previous 3DIM generation, it is not possible to operate
3DIM and 4DIMLT2 LED drivers on the same SD line
without an additional relay on the SD port of the 3DIM
drivers.
As mentioned in the 3DIM application guide, it is necessary
to install an additional relay in mixed installations to separate the SD port of the 3DIM driver from the pilot or control
line (see figure 39). This is also valid for drivers whose control port for the pilot line is not referenced to N (see unkown
ECG in figure 39).
Figure 39: StepDIM with mixed 3DIM drivers and 4DIMLT2 LED drivers
Luminaire 1
Luminaire 2
Luminaire 3
Unknown ECG
4DIMLT2 E
3DIM ECG
L
N
SD
DA
DA
LED+
LED-
NTCset
Vset
+12Vset
GNDset
L
N
SD(2)
DA
DA
LED+
LED-
LED-
LEDset
NTCset
L
N
X
LED+
LED-
LED module
LED module
LED module
PE
L1
S1
N
Lx
S2
Switching cabinet
24
4DIMLT2 LED drivers | Operating modes
3.4 MainsDIM feature
The reduction of the mains amplitude is partly used for the
dimming of conventional lamps. In the MainsDIM operating
mode, the output current of the LED driver depends on the
mains input voltage. Standard electronic drivers compensate for fluctuations in the input voltage and do not support
this function. No additional control wires are needed in this
dimming mode (see figure 40).
Figure 40: MainsDIM wiring
Luminaire 1
Luminaire 2
4DIMLT2 E
4DIMLT2 E
L
N
SD(2)
DA
DA
LED+
LED-
LED-
LEDset
NTCset
L
N
SD(2)
DA
DA
LED+
LED-
LED-
LEDset
NTCset
LED module
LED module
PE
L1
N
Switching cabinet
The dimming behavior of the LED driver can be programmed
using the Tuner4TRONIC® software. The programmable
values can be found in table 15.
Table 15: MainsDIM parameters
Parameter
Min.
Max.
Increment Default
Start voltage
190 V
250 V
1V
220 V
Start level
30 %
100 %
1%
100 %
Stop voltage
170 V
230 V
1V
180 V
Stop level
30 %
85 %
1%
30 %
Start-stop voltage
20 V
-
-
-
Warning:
If the output level falls below the minimum physical dimming level, the minimum physical dimming level is used by
the LED driver. The software still displays the original value.
If the output level falls below the minimum allowed dimming
current, the value is visualized in red.
25
4DIMLT2 LED drivers | Operating modes
Figure 41: MainsDIM sample programming
Note:
To increase the light output stability against small voltage
fluctuations, a minimum voltage difference of 5 V from the
“start voltage” is necessary to trigger the dimming of the
LED driver. The triggering of the dimming is performed with
a delay time of approximately 1 to 2 seconds. The setting
of the thresholds should also consider the voltage drop in
the real installation due to cable and contact resistance.
3.5 DALI operating mode
For DALI operation, the 4DIMLT2 LED driver is connected
to the mains and to a DALI controller (e.g. Street Light Control system) or DALI bus (see figure 42). The additional DALI
wires can be installed alongside the mains wires.
Figure 42: DALI wiring
Luminaire 1
Luminaire 2
4DIMLT2 E
4DIMLT2 E
L
N
SD(2)
DA
DA
LED+
LED-
LED-
LEDset
NTCset
L
N
SD(2)
DA
DA
LED+
LED-
LED-
LEDset
NTCset
LED module
LED module
PE
L1
S1
N
DALI bus/
controller
Switching cabinet
26
4DIMLT2 LED drivers | Operating modes
3.6 DC operation feature (in preparation)
4DIMLT2 drivers are prepared for DC grid operation. As the
built-in 4DIMLT2 LED driver fuse is not rated for DC operation, an external rated DC fuse is necessary. OSRAM is
working on an improved firmware version to support common DC grid suppliers, which is expected to be avail­able in
April 2016. Currently, it is not recommended to use the
drivers in DC operation.
Up to 64 DALI LED drivers can be controlled via a two-wire
control line – individually, jointly or in up to 16 groups. All of
them are connected in parallel to the two DALI wires. DALI
connections are not polarized. Therefore, plus and minus
do not have to be checked. The maximum allowed wire
length between two DALI LED drivers is 300 m. In case of
problems, a DALI repeater has to be used.
The lighting can be switched on/off and dimmed via the
DALI control line. A logarithmic (default) or linear dimming
curve can be set. Additional status information can be read
out and exchanged between the LED driver and the control
unit.
The DALI mode always has the highest priority. The LED driver
switches to the DALI operating mode as soon as a valid DALI
command is received. The DALI mode is maintained until
the next power-off/on cycle.
The dimming behavior is set to the logarithmic dimming
curve by default.
Note:
The 4DIMLT2 family does not support the OSRAM Touch
DIM® functionality.
Warning:
If the output level falls below the minimum physical dimming level, the minimum physical dimming level is used by
the LED driver. The software still displays the original value.
If the output level falls below the minimum allowed dimming
current, the value is visualized in red.
Figure 43: DC wiring
Luminaire 1
Luminaire 2
4DIMLT2 E
4DIMLT2 E
L
N
SD(2)
DA
DA
LED+
LED-
LED-
LEDset
NTCset
L
N
SD(2)
DA
DA
LED+
LED-
LED-
LEDset
NTCset
DC fuse
LED module
DC fuse
LED module
PE
L1
S1
N
Switching cabinet
27
4DIMLT2 LED drivers | Additional information
4 Additional information
4.1 Insulation
4DIMLT2 LED drivers have a double/reinforced insulation
between the primary and the secondary side and a double/
reinforced insulation between all electronic parts and the
casing.
4.2 Cable preparation
4DIMLT2 LED drivers use open terminals for easy and
quick wiring. To ensure a safe and stable hold of the wires,
the insulation of the cables should be stripped accordingly.
Primary side:
Figure 44: Cable preparation, primary side, 40 W only
OT 165/
170-240/1A0
4DIMLT2
OT 90/
170-240/1A0
4DIMLT2 E
OT 60/
170-240/1A0
4DIMLT2 E
OT 40/
120-277/1A0
4DIMLT2 E
Table 16: Insulation and Uout
DA
DA
SELV
SELV
Double
0.2–1.5 mm2
SD(2)
N
L
Insulation (primary/
secondary)
8.5–9.5 mm
Double
Figure 45: Cable preparation, primary side
Insulation of casing
Uout
40 W only
Double
Double
Double
Double
60 V
120 V
200 V
300 V
60 W, 90 W and 165 W
DA
DA
The equipotential pin (EQUI) meets the requirements for
double insulation versus the primary side and requirements
for basic insulation versus the secondary side (it complies
with the requirements of IEC 60598-1 Annex A – “safe to be
touched” – in case of insulation fault between all secondary
circuits and accessible conductive parts).
The detailed insulation levels are defined in the instruction
sheet of the product.
0.25–2.5 mm2
SD(2)
N
L
10–11 mm
Figure 46: Cable preparation, secondary side and
equipotential pin
40 W, 60 W, 90 W and 165 W
NTCset
LEDset
0.2–1.5 mm2
LEDLED+
EQUI
8.5–9.5 mm
28
4DIMLT2 LED drivers | Additional information
4.3 Incorrect wiring on the output side
4DIMLT2 LED drivers are inherently protected against incorrect wiring on the output side. Incorrect wiring between
LED+ and LEDset or NTCset can irreversibly damage the
LED driver. If there is a short circuit between LED+ and
LED-, the LED driver shuts down and tries to switch the
load back on. The same behavior might occur if the output
voltage falls below the minimum allowed voltage.
4.4 Input overvoltage
In case the supply input voltage exceeds 305 VAC, the LED
driver shuts down to indicate an unbalanced load condition. The 4DIMLT2 LED driver can withstand up to 350 VAC
for a maximum of two hours.
4.5 Surge protection
4DIMLT2 LED drivers offer a common mode protection level of up to 10 kV (1 pulse) with a unique integrated overvoltage suppression for the connected LED module, which
minimizes the stress on the LED module and thus ensures
high reliability in the field. To achieve the surge protection
levels, the EQUI pin needs to be connected to the heat sink
of the LED module (see figures 47 and 48). For the protection levels and test conditions mentioned below, the voltage
stress between the LED module and the heat sink can be
kept below 0.5 kVpeak. The EQUI pin meets the insulation
­requirements for protection class I and II luminaires. The
protection level between L and N or SD(2) and N is 6 kV.
In addition, the SD port contains an active surge suppression
element referenced to N. In case an external overvoltage
protection device (SPD) is used to protect the DALI port and
the mains input, the protection level UP of the SPD ­between
DALI port to earth and mains input to earth should be equal.
Connecting only an external SPD to the DALI port with a
connection to earth is not allowed.
The following protection levels can be achieved for class I
and II luminaires:
Table 17: 4DIMLT2 surge protection levels
Surge between
Test condition acc. to
EN 61547
L-N
6 kV at 2-Ω source
SD(2)-N
6 kV at 2-Ω source
L-EQUI/SD(2)-EQUI/N-EQUI
8 kV at 12-Ω source
Surge between
Test condition acc. to
EN 61000-4-5, 1 pulse 1.2/50 µs
L-EQUI/SD(2)-EQUI/N-EQUI
10 kV at 12-Ω source
If an additional external surge protection device is used,
please contact your OSRAM sales contact for support.
Figure 47: Protection class I luminaire
Connect EQUI pin to
heat sink and PE
LED module
PE
N
L
Cable
4DIMLT2 E
Figure 48: Protection class II luminaire
Connect EQUI pin to
heat sink
LED module
N
L
Cable
4DIMLT2 E
29
4DIMLT2 LED drivers | Programming
5 Programming
4DIMLT2 LED drivers can be programmed using the Tuner4TRONIC® software together with the hardware programmer “DALI magic”. This software consists of the following
software packages:
—— T4T – Development
—— T4T – Production
—— T4T – Dynamic Link Library (DLL)
—— T4T – Command Line Version
Performance check:
If electronically controlled control gears are combined with
electrical power supplies, the electronic circuits of both
­devices might influence each other.
This could lead to wrong measurements (e.g. lower power
factor compared to the mains grid). In order to avoid these
effects, a mains filter should be installed after the electrical
power supply.
After registration, the software can be downloaded from
the www.myosram.com portal.
For more information on the programming of 4DIMLT2 LED
drivers, please consult the Tuner4TRONIC® manuals.
Figure 49: LED driver programming
4DIMLT2
L
N
DA
DA
Supply voltage
DA DALI magic
DA
USB
Disclaimer
All information contained in this document has been collected, analyzed and verified with great care by OSRAM.
However, OSRAM is not responsible for the correctness
and completeness of the information contained in this
document and OSRAM cannot be made liable for any
damage that occurs in connection with the use of and/or
reliance on the content of this document. The information
contained in this document reflects the current state of
knowledge on the date of issue.
USB
PC
4DIMLT2 LED drivers need to be powered during programming. They need to be supplied either with the mains input
voltage (case A) or with an SELV DC voltage (case B). The
low voltage allows for safe programming without the need
for additional precautions during production.
Warning:
In case of partial programming, the SELV DC voltage (case B)
needs to be applied to the LED driver for at least 4 seconds.
For programming with the mains input voltage (case A), the
OT 90/170-240/1A0 4DIMLT2 E only needs an LED load connected. This is not the case for the SELV DC voltage (case B).
Table 18: Supply voltage during programming
Case
Supply
voltage
Power
Ambient
temperature
A
220–240 VAC
40, 60, 90 and 165 W
Acc. to LED
driver datasheet
B
48 VDC +15 %/-4 %1), 2) 40, 60, 90 and 165 W
-10 °C to +40 °C
1) T
he power supply should be capable to deliver an average
current of 100 mA and contain an automatic restart function in
case of overload (typ. peak inrush current of 1 A).
2) T
he 48 V DC programming is not applicable for 3DIMLT(+) LED drivers
Note:
A power-off/on cycle is necessary to activate the
programmed parameters.
30
01/16 OSRAM DS SMK Subject to change without notice. Errors and omissions excepted.
www.osram.com
OSRAM GmbH
Head office:
Marcel-Breuer-Strasse 6
80807 Munich, Germany
Phone +49 89 6213-0
Fax
+49 89 6213-2020
www.osram.com
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