OccuSwitch DALI
User Guide
Page 37
5.1 Introduction
The OccuSwitch DALI BMS (OSD BMS) can be connected
to a Building Management System (BMS) in three ways:
• Via an universal DALI controller, available for almost any
BMS system
• Via an universal DALI gateway, available for most BMS
systems
• Via a specific gateway (Loytec Lon and BACnet, Philips
KNX and Dynet)
B
Warning
All settings that are being changed in the LRM209x
will be saved in the OSD . Be aware that this saving
of settings is can take up to 15 minutes before it will
take place . This means that the mains should not be
switched off during this time to prevent loss of data .
5.2
Using a universal DALI controller
This method works with all DALI controllers, designed
to be used with DALI drivers (aka drivers) . The OSD is
connected via the X-port to the controller . The DALI
network formed by the OSD and the luminaires function
separately from this connection .
The OSD will be seen as a driver (most controllers will
detect the device is not a standard driver and report so,
but it will work as a driver) .
This means that all standard DALI commands (known as
part 102 of the DALI standard) will work with the OSD . If
you select a certain output level (regardless of the method
you select to do so) all luminaires connected to the OSD
will react . The OSD will operate as one, since the OSD
only uses 1 DALI address . So all OSD channels (window
corridor side for instance) will react in the same way .
Furthermore the automated daylight control is disabled
while the occupancy control is NOT . If a command is given
the occupancy timer is triggered . If the area is vacated
lights will be switched off after the timer expirers . If you
want the lights to stay on (or off) you must repeat the DALI
command used with a shorter interval than the time set in
the timer .
All status reports will reflect the actual status of the
luminaires “behind” the OSD . However the OSD can only
report a single status, so if one lamp (connected to the
OSD) fails, the OSD will report this, and not that others are
still ok .
5 .2 .1
Pitfalls and exceptions
• If you select the first scene (scene1) the OSD will not
react, instead it will enable the automated mode,
including daylight control
• Most DALI controllers expect to be a master on the DALI
bus . Many of them do not read the actual light output as
given by the DALI device (in this case the OSD), but they
rely on the value in the last command given . So a read-
back of the value will not report the actual status of the
OSD . A gateway will do this correctly
• The OSD will report the average output value (so if 2
luminaires are on 55% and one on 100% it will report
70%) . Older version (the /00) will report the window
side value
• Some controller work in a different way than you expect .
For instance a scene; a controller could store the scene
information itself . Instead of sending out a scene it will
send direct arc power (so output) values to the OSD . It
might be impossible to send a DALI scene1 command to
set the OSD into automated mode . Some controllers are
not fully DALI compatible . This is not noted when used
with drivers, but might affect the functioning of the OSD
5 .2 .2
Shared Occupancy Control
It is possible to share the occupancy signal amongst the
controllers . Each controller can be assigned to a DALI
group . If occupancy sharing is enabled (please refer to
your Philips representative for more information how to
enable this feature and the tool you require for this) each
OSD will send occupancy info to its group members . This
is very useful for open plan offices . Now an open plan can
be configured easily as one space .
The OSD recognizes if the occupancy signal is from its
own sensor, or from a neighboring one . Put into mode 9
it will switch lights on at nominal level if the OSD “sees”
movement itself or to 30% or 50% if the signal was from
the neighbor thus an ideal regime with optimal savings in
an open plan . Areas in use will receive full lighting, whilst
unused areas will go to a lower light level, saving energy,
but preventing dark areas in the open plan office .
The OSD uses DALI grouping for this feature .
D
Note
This function will only work in combination with a DALI
controller if this controller support multi master mode
(aka DALI part 103) . Please ask and test before you
specify this function .
5
OccuSwitch DALI BMS (LRM2090 and LRM2092)
