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L-DALI User Manual
358
LOYTEC
Version 5.2
LOYTEC electronics GmbH
8.4.4.7 Lunatone DALI Temp-Sensor
When using the Lunatone DALI Temp-Sensor the temperature value reported by the sensor
is provided via the lux level output (
nviLuxLevel
,
Present_Value
) of the corresponding
Light Sensor object.
8.4.5 Power Failure Recovery
If a ballast signals that it has come back from power failure the L-DALI will restore the
ballast’s last known dim level. This behavior ensures that a consistent lighting situation is
reestablished after a power failure.
8.4.6 DALI Channel Bridging
The L-DALI allow connecting two or more physical DALI channels to one virtual DALI
channel. This operation mode is called DALI bridging. It is used if a DALI group shall
contain more than 64 ballasts, that is, more ballasts than it is possible to accommodate on
one DALI channel.
In the DALI bridging mode the L-DALI will forward any dim commands addressed to
DALI groups and any DALI broadcasts received on one channel to the other bridged
channels.
Note:
DALI bridging is only required if the large group shall be controlled by other DALI
masters like DALI switches, buttons, or touch panels. If no such devices are used, it is
recommended to use fan-out binding to the group’s network variables (one on each
CEA-709 node representing a DALI channel) instead of the bridging mode.
8.4.7 Reducing ballast standby energy consumption
To reduce the standby energy consumed by DALI ballasts, the L-DALI allows switching off
the mains power of all ballasts on a DALI channel using an external relay, whenever they all
have a dim level of 0% (OFF).
Important:
Do not use this functionality in case the channel contains DALI emergency lights or HID
lamps!
To use this feature the mains power of all DALI ballasts on a DALI channel must be
switchable via a relay controlled by a BACnet or L
ON
M
ARK
IO-module (e.g. LOYTEC
L-IOB, see Figure 242). The relay must switch off power, whenever the channel feedback
of that DALI channel is 0% and must switch power on otherwise. Depending on the devices
interface the channel feedback is available via the following data points:
CEA-709
:
nvoCHValueFb
in the corresponding Channel Actuator object (see Section
BACnet
:
Present_Value
of the channels feedback Analog Input object (see Section