Tridonic 28000655 LCA 50W 100–400mA one4all lp – DALI 2 Certified

28000655 Common 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) (1)(2) 95 – 255 mA

Typ. current (220 V, 0 Hz, full load, 15 % dimming level) (2) 25 – 45 mA
Leakage current (at 230 V, 50 Hz, full load) (1)(2) < 0.35 mA
Typ. input current in no-load operation 22 mA

In-rush current (peak / duration) 22.4 A / 176 µs
Max. input power 57 W
Typ. power consumption on stand-by (3) < 0.17 W

Typ. input power in no-load operation 0.4 W
Typ. efficiency (at 230 V, 50 Hz, full load) (2) 92 %
λ (at 230 V, 50 Hz, full load) (1) 0.98

THD (at 230 V, 50 Hz, full load) (1) < 9 %
Starting time (at 230 V, 50 Hz, full load) (4) < 0.7 s
Starting time (DC mode) (4) < 0.3 s

Switchover time (AC/DC) (5) < 0.2 s
Turn off time (at 230 V, 50 Hz, full load) < 0.05 s
Output current tolerance (1)(6) ± 3 %

Max. output current peak (non-repetitive) ≤ output current + 35 %
Output LF current ripple (< 120 Hz) ± 1.5 %
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
Length 280 mm
Width 30 mm

Height 21 mm
Lifetime up to 100000 h

28000655 Dimensions

Side view

Top view

Also consider our 87501205 subject to the operating parameters of the application.

Other information for the 28000655

28000655 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

28000655 Wiring

Circuit diagram

28000655 Wiring guidelines

• Run the secondary lines separately from the mains connections and lines to achieve good EMC performance.
• The max. secondary cable length is 2 m (4 m circuit), this applies for LED output as well as for I-SELECT 2.

• For good EMC performance, keep the LED wiring as short as possible.
• Secondary switching is not permitted.
• The LED Driver has no inverse-polarity protection on the secondary side.

Wrong polarity can damage LED modules with no inverse-polarity protection.

• Wrong wiring of the LED Driver 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.

If a LED load is connected the device has to be restarted before the output will be activated again.
This can be done via mains reset or via interface (DALI, DSI, switchDIM, ready2mains).

28000655 Earth connection

The earth connection is conducted as protection earth (PE). The LED Driver 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 LED Driver.

Earth connection is recommended to improve following behaviour.

• Electromagnetic interferences (EMI)
• LED glowing at stand-by
• Transmission of mains transients to the LED output

External I-SELECT 2 resistors on LED modules

LED modules with on-board I-SELECT 2 resistors may cause irreparable damages, caused by surge / burst peaks.

28000655 Electrical values

Make sure that the LED Driver is operated within the given window under all operating conditions. Special attention needs to be paid at dimming and DC emergency operation as the forward voltage of the connected LED modules varies with the dimming level, due to the implemented amplitude dimming technology.

Coming below the specified minimum output voltage of the LED Driver may cause the device to shut-down. See chapter “6.11 Light level in DC operation” for more information.

28000655 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 %

28000655 Software / Programming / Interfaces

Software / programming

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

The Driver 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.

28000655 Functions

28000655 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 LED Driver 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.

28000655 switchDIM

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

Brief push (< 0.6 s) switches LED Driver ON and OFF. The dimm 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 LED Drivers 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.

28000655 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.

28000655 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 LED Driver 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.

28000655 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 LED Driver 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.

The LED Driver is designed to operate on DC voltage and pulsed DC voltage.

For a reliable operation, make sure that also in DC emergency operation the LED Driver 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: < 22.3 mA
DC: < 1.5 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 LED Driver 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 Driver 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 Driver 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.

Constant Current DALI LED drivers are advanced power supplies that regulate a fixed, consistent, and adjustable output current (e.g.350mA-700mA) for LEDs, while supporting intelligent digital dimming. They are ideal for commercial, architectural, and high-efficiency lighting applications using series-wired fixtures. These drivers enable individual or group, flicker-free dimming (down to 0.1%) using DALI-1 or DALI-2 protocols.

Key Features and Benefits

Constant Current Regulation: Ensures consistent light output and protects LEDs from current fluctuations.

DALI Compatibility: Enables bidirectional communication for control and monitoring.

Flexibility: Many models feature dip switches to select specific amperage outputs (e.g., 250mA, 350mA, 500mA, 700mA).

Dimming Performance: Supports smooth, deep dimming (0.1% to 100%).

Advanced Features: Some models support NFC configuration for setting addresses, dimming curves, and maximum levels without powering on the driver.

Safety & Efficiency: Typically Class 2 rated with high power factors (up to 0.98), making them efficient.

Common Applications

Commercial Lighting: Office and retail spaces.

Architectural Lighting: Accent and cove lighting.

Downlights and Spotlights: Ideal for high-power LED arrays.

Common Specifications

Input Voltage: Usually 100-240V or 220-240V AC.

Output Power: Ranges from low wattage up to 1000W, commonly 10W-60W.

IP Rating: Commonly IP20 for indoor use, though higher ratings are available.

Compliance: IEC 62386 (DALI).

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.