Tridonic 28001250 LCA 75W 250-550mA one4all lp PRE – DALI 2 Certified

28001250 Common Data

Ordering data LCA 75W 250-550mA one4all lp PRE 28001250

28001250 Technical Data

Rated supply voltage 220 – 240 V
AC voltage range 198 – 264 V
DC voltage range 176 – 280 V
Mains frequency 0 / 50 / 60 Hz
Overvoltage protection 320 V AC, 48 h
Typ. current (at 230 V, 50 Hz, full load) 12 192 – 358 mA
Typ. current (220 V, 0 Hz, full load, 15 % dimming level) 2 45.5 – 69.6 mA
Leakage current (at 230 V, 50 Hz, full load) 12 < 150 μA
Max. input power 81.7 W

Typ. efficiency (at 230 V, 50 Hz, full load) 2 92 %
λ over full operating range (max.) 0.99
λ over full operating range (min.) 0.83C
Typ. power consumption on stand-by 3 < 0.15 W
Typ. input current in no-load operation 23 mA
Typ. input power in no-load operation 0.44 W
In-rush current (peak / duration) 29 A / 155 μs
THD (at 230 V, 50 Hz, full load) 1 < 4.7 %
Starting time (at 230 V, 50 Hz, full load) 1 < 0.6 s
Starting time (DC mode) < 0.3 s
Switchover time (AC/DC) 4 < 0.2 s
Turn off time (at 230 V, 50 Hz, full load) < 20 ms
Output current tolerance ± 3 %
Max. output current peak (non-repetitive) ≤ output current + 40 %

Output LF current ripple (< 120 Hz) ± 5 %
Output P_ST_LM (at full load) ≤ 1
Output SVM (at full load) ≤ 0.4
Max. output voltage (U-OUT) 250 V
Dimming range 1 – 100 %
Mains surge capability (between L – N) 1 kV
Mains surge capability (between L/N – PE) 2 kV
Surge voltage at output side (against PE) < 0.5 kV
Type of protection IP20
Lifetime up to 100,000 h
Dimensions L x W x H 280 x 30 x 21 mm

28001250 Standards

EN 55015
EN 61000-3-2
EN 61000-3-3
EN 61347-1
EN 61347-2-13
EN 62384
EN 61547
EN 62386-101 (DALI-2)
EN 62386-102 (DALI-2)
EN 62386-207 (DALI-2, including part 251, 252, 253)
According to EN 50172 for use in central battery systems
According to EN 60598-2-22 suitable for emergency lighting installations

Thermal details and lifetime

The 28001250 is designed for a lifetime stated above under reference conditions and with a failure probability of less than 10 %.

The relation of tc to ta temperature depends also on the luminaire design. If the measured tc temperature is approx. 5 K below tc max., ta temperature should be checked and eventually critical components (e.g. ELCAP) measured. Detailed information on request.

28001250 Installation / wiring

Wiring type and cross section

For wiring use solid wire from 0.5 – 1.5 mm². Strip 8 – 9 mm of insulation from the cables to ensure perfect operation of terminals.

LED module/LED driver/supply

Loose wiring

28001250 Wiring guidelines

• The cables should be run separately from the mains connections and mains cables to ensure good EMC conditions.
• The LED wiring should be kept as short as possible to ensure good EMC.

The max. secondary cable length is 2 m (4 m circuit), this applies for LED output as well as for I-SELECT 2.
• Secondary switching is not permitted.
• The 28001250 has no inverse-polarity protection on the secondary side.

Wrong polarity can damage LED modules with no inverse-polarity protection.
• Wrong wiring of the 28001250 can lead to malfunction or irreparable damage.
• To avoid the damage of the Driver, the wiring must be protected against short circuits to earth (sharp edged metal parts, metal cable clips, louver, etc.).

Hot plug-in

Hot plug-in is not supported due to residual output voltage of > 0 V.

When connecting an LED load, restart the device to activate the LED output. This can be done via mains reset or via interface (DALI, DSI, switchDIM, ready2mains).

Earth connection

The earth connection is conducted as protection earth (PE). The 28001250 can be earthed via earth terminal or metal housing. If the LED driver will be earthed, protection earth (PE) has to be used. There is no earth connection required for the functionality of the 28001250. Earth connection is recommended to improve following behaviour:
• Electromagnetic interferences (EMI)
• LED glowing at stand-by
• Transmission of mains transients to the LED output

In general it is recommended to earth the 28001250 if the LED module is mounted on earthed luminaire parts respectively heat sinks and thereby representing a high capacity against earth.

Dimming

Dimming range 1 % to 100 %

Digital control with:
• DSI signal: 8 bit Manchester Code Speed 1 % to 100 % in 1.4 s
• DALI signal: 16 bit Manchester Code
Speed 1 % to 100 % in 0.2 s
Programmable parameter:
Minimum dimming level
Maximum dimming level
Default minimum = 1 %
Programmable range 1 % ≤ MIN ≤ 100 %
Default maximum = 100 %
Programmable range 100 % ≥ MAX ≥ 1 %
Dimming curve is adapted to the eye sensitiveness.
Dimming is realized by amplitude dimming.

Software / programming

With appropriate software and interface different functions can be activated and various parameters can be configured in the LED driver.

The 28001250 supports the following software and interfaces:
Software / hardware for configuration:
• companionSUITE (deviceGENERATOR, deviceCONFIGURATOR, deviceANALYSER)
• masterCONFIGURATOR
• ready2mains Programmer
Interfaces for data transfer:
• Control input DALI
• Control input ready2mains

Control input DALI

The control input is non-polar for digital control signals (DALI).
The control signal is not SELV. The control cable has to be installed in accordance to the requirements of low voltage installations.
Digital control with:
• DALI signal: 16 bit
• DSI signal: 8 bit

Control input ready2mains (L, N)

The digital ready2mains protocol is modulated onto the mains signal which is wired to the mains terminal (L and N).
The configuration is done via the ready2mains Programmer, either directly at the Programmer itself or via a respective software tool. For details on the configuration via ready2mains see the technical information of the
Programmer and its tools.
Following tools can be used:
• deviceCONFIGURATOR (companionSUITE)
• masterCONFIGURATOR
• ready2mains Programmer

I-SELECT 2

By inserting a suitable resistor into the I-SELECT 2 interface, the current value can be adjusted. The relationship between output current and resistor value can be found in the chapter “Accessories I-SELECT 2 Plugs”.

If the resistor is connected by wires a consistent base insulation must be ensured. Furthermore, a max. wire length of 2 m may not be exceeded and potential interferences have to be avoided.

Resistors for the main output current values can be ordered from Tridonic (see accessories)

OEM Identification

The OEM (Original Equipment Manufacturer) can set his own identification
number.
DALI Part 251: Memory bank 1 extension.

OEM GTIN

The Original Equipment Manufacturer (OEM) can set his own Global Trade Item Number (GTIN).
DALI Part 251: Memory bank 1 extension.

Luminaire data

This function provides the asset management with accurate data about the luminaire.
DALI Part 251: Memory bank 1 extension.

LED current

The LED output current must be adapted to the connected LED module. The value is limited by the current range of the respective device.

The output current of the 28001250 can be adjusted in a certain range. For adjustment there are 4 options available.

Option 1: DALI
Adjustment is done by companionSUITE or by masterCONFIGURATOR.

Option 2: I-SELECT 2
By inserting a suitable resistor into the I-SELECT 2 interface, the current value can be adjusted.

Option 3: ready2mains
Adjustment is done by the ready2mains programmer and the corresponding configuration software (see ready2mains documentation).

The priority for current adjustment methods is DALI (highest priority), I-SELECT 2 and ready2mains (lowest priority).

Device operating mode

A Tridonic Driver supports several control signals. These control signals are automatically detected and the mode is adapted. If only one special device mode is required, this mode can be selected. “Automatic detection” is the default setting.

switchDIM

Integrated switchDIM function allows a direct connection of a pushbutton for dimming and switching.

Brief push (< 0.6 s) switches the 28001250 ON and OFF. The dim level is saved at power-down and restored at power-up. When the pushbutton is held, LED modules are dimmed. After repush the LED modules are dimmed in the opposite direction.

In installations with 28001250 with different dimming levels or opposite dimming directions (e.g. after a system extension), all LED drivers can be synchronized to 50 % dimming level by a 10 s push.

Use of pushbutton with indicator lamp is not permitted.

switchDIM 2
Version 2 has now the possibility to define different fade times used for short button press events. So the fade time to set memory level (if wake-up from standby) as well as the fade time to switch off can now be configured.

corridorFUNCTION

With the corridorFUNCTION and a commercially available motion detector, it is easy to adapt the lighting in one area to its use.

That is, when the area is entered by a person, the lighting dims instantly to the desired brightness and is available in full strength.

After the area is left by the person, the brightness dims slowly to a smaller value or switches off completely. The individual parameters of the desired profile, such as brightness values or delay times, can be adjusted flexibly and individually.

Constant Light Output (CLO)

With this function the light output of the LED module can be kept equal over the lifetime. The light output of an LED module reduces over the course of its lifetime.

The Constant Light Output (CLO) function compensates for this natural decline by constantly increasing the output current of the 28001250 throughout its lifetime.

CLO shall be achieved by limitation of the LED current at the commissioning of the LED driver and providing a linear interpolation of the current over the time, depending on the data points given by the user.

DC operation

In emergency light systems with a central battery supply the DC recognition function uses the input voltage to detect if emergency mode is present.

The 28001250 then automatically switches to DC mode and dims the light to the defined DC level.

Without DC recognition different and more complex solutions would have to be applied in order to detect emergency mode. DC recognition is integrated in the device as standard. No additional commissioning is necessary for activation.

This is a safety-relevant parameter. The setting is relevant for the dimensioning of the central battery system.

The 28001250 is designed to operate on DC voltage and pulsed DC voltage. For a reliable operation, make sure that also in DC emergency operation the 28001250 is run within the specified conditions as stated in chapter
“4.1 operating window”.

Light output level in DC operation: programmable 1 – 100 % (factory default = 15 %, EOFi = 0.13).

The voltage-dependent input current of Driver incl. LED module is depending on the used load.

The voltage-dependent no-load current of Driver (without or defect LED
module) is for:
AC: < 32.8 mA
DC: < 2.8 mA

In DC operation dimming mode can be activated. If Dimming on DC is activated the requirements of the DC recognition function are ignored.
Even if DC is detected, the LED driver continues to behave as in AC mode

• The present dimming level is retained
• An emergency light level defined for the DC recognition function (DC level) is ignored
• Control signals via DALI continue to be executed

If Dimming on DC is activated then emergency mode is not recognised. The device no longer automatically switches to the emergency light level.

Enhanced power on level (ePOL)

The Enhanced Power On Level parameter defines the power level that is set automatically when power is restored after a power failure.

The Enhanced Power On Level can be set to a fixed value (0 – 100 %) or can recall the memory value.

The memory value is the last value the 28001250 was set to before the power failure.

This value applies not only in DALI device operating mode, but also in the device operating mode switchDIM.

DALI default parameters

In order for all luminaires to react the same for each operation (switching, dimming, scene recall …), these values must be set the same. These DALI standard parameters are supported by every DALI-2 device.

Scenes and groups

Each device can be a member of up to 16 groups. Also, 16 different scene values can be stored in each device.

fade2zero

When the 28001250 is switched off, fade2zero allows a smooth dimming down to almost zero.

Activate the fade2zero function when programming with companionSUITE and set a DALI fade time. fade2zero only works if the minimum dimming level of the 28001250 is the default value.

The device then dims to far below the limit of its working window (dimming range).
This function is deactivated by default.

Power-up fading

The power-up function offers the opportunity to modify the on behaviour. The time for fading on can be adjusted in a range of 0.2 to 16 seconds. According to this value, the device dims from 0 % up to the power-on level. By factory default no fading time is set (= 0 seconds).

Dimming curve

DALI:
The desired dimming behaviour is selected via two different dimming curves (logarithmic or linear). The default setting of the dimming behaviour is logarithmic.

Protective features

Intelligent temperature guard (ITG)

The Intelligent temperature guard (ITG) function provides effective protection against thermal overloads by slowly reducing the output if a defined internal temperature is exceeded.

The reduction of overtemperatures takes place in small steps every two
minutes. As soon as the temperature drops again, the output power is gradually increased every 10 minutes. On DC operation this function is deactivated to fulfil emergency requirements.

Intelligent Voltage Guard (IVG)

The Intelligent Voltage Guard (IVG) function warns of possible damage due to overvoltage or undervoltage.
The mains voltage is constantly monitored and if necessary appropriate responses are made:

• If the mains voltage is too low (< 70 V), the LED driver is switched off.
• At a mains voltage between 70 and 140 V, the LED driver switches off and on again on a non-cyclic basis.
• In case of an overvoltage (> 318 V), the LED driver sends feedback via DALI

Short-circuit behaviour

In case of a short-circuit at the LED output the LED output is switched off. After restart of the 28001250 the output will be activated again. The restart can either be done via mains reset or via interface (DALI, DSI, switchDIM, ready2mains)

No-load operation

The 28001250 will not be damaged in no-load operation. The output will be deactivated and is therefore free of voltage. If a LED load is connected the
device has to be restarted before the output will be activated again.

Overload protection

If the maximum load is exceeded by a defined internal limit, the 28001250 turns off the LED output.

After restart of the 28001250 the output will be activated again. The restart can either be done via mains reset or via interface (DALI, DSI, switchDIM, ready2mains).

Miscellaneous

Insulation and electric strength testing of luminaires

Electronic devices can be damaged by high voltage. This has to be considered during the routine testing of the luminaires in production.

According to IEC 60598-1 Annex Q (informative only!) or ENEC 303-Annex A, each luminaire should be submitted to an insulation test with 500V DC for 1 second. This test voltage should be connected between the interconnected phase and neutral terminals and the earth terminal. The insulation resistance must be at least 2MΩ.

As an alternative, IEC 60598-1 Annex Q describes a test of the electrical strength with 1500V AC (or 1.414 x 1500V DC). To avoid damage to the electronic devices this test must not be conducted.

Control terminals

There is a risk of electric shock when touching these terminals in case of failure.

Conditions of use and storage

Humidity: 5 % up to max. 85 %, not condensed (max. 56 days/year at 85 %)

Storage temperature: -40 °C up to max. +80 °C

The devices have to be acclimatised to the specified temperature range (ta) before they can be operated.

Maximum number of switching cycles

All LED driver are tested with 50,000 switching cycles. The actually achieved number of switching cycles is significantly higher.

DALI-2 linear constant current LED drivers regulate a specific, fixed output current to power LED modules or panels used in commercial and architectural lighting. They provide highly granular, flicker-free dimming and enable bidirectional communication with intelligent building controllers, such as sensors and smart panels.

Key Features and Capabilities

Constant Current (CC) Output: Unlike constant voltage drivers that output a steady voltage, CC drivers supply a fixed electrical current, with the voltage adjusting automatically to match the LED load. Many models feature adjustable current outputs using DIP switches or NFC programming.

DALI-2 Standard: Operating on the updated IEC 62386 protocol, these drivers offer improved cross-vendor compatibility, faster command responses, and support for advanced input devices compared to older DALI-1 systems.

Form Factor: The “linear” designation indicates their long, slim profile, making them ideal for integration into standard aluminum profiles, troffer fixtures, and linear trunking systems.

DT6 vs. DT8: Most units utilise DT6 (which controls basic dimming for a single string of LEDs), though some drivers use DT8 protocols, which allow for the adjustment of tunable white or colour temperature without requiring an extra driver or complex wiring.

Feedback and Diagnostics: Bidirectional communication allows the driver to report fault statuses (like open or short circuits) and current power consumption back to the central DALI application controller.

Tridonic are a Zumtobel Group company, founded in 1956 in Dornbirn, Austria. For more than 60 years, they have been a driving force in the development of professional lighting solutions.

Today, Tridonic is a world-leading provider of lighting technology for professional applications, including office buildings, and retail outlets, hotels and restaurants, the education industry and outdoor lighting sectors.

In Tridonics’ extensive range of energy-efficient dimmable and non-dimmable LED drivers they offer the right products for every indoor and outdoor application – from cost-efficient LED drivers in proven Tridonic quality to premium products that give you maximum flexibility and convenience.

Tridonics’ dimmable LED drivers can be controlled with different analog and digital dimming signals. Tridonic basicDIM Wireless products allow wireless control without additional wiring.