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Data sheet 12/21-LC894-2
LED driver
Constant voltage
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 power range.
Light output level in DC operation: programmable 1 – 100 %
(factory default = 15 %, EOFu = 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: < 28 mA
DC: < 1.15 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.
6.13 Power-up fading
The power-up function offers the opportunity to modify the on behavior.
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).
6.12 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.
6.8 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.
This is a safety-relevant parameter.
The setting is relevant for the dimensioning of the central battery
system.
6.9 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.
6.10 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.
6.11 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.
6.14 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.
6.15 deviceKEY
This function enables a password protection for device settings to prevent
unauthorized access or changes.
