Using A Universal Dali Gateway; Pitfalls And Exceptions; Shared Occupancy Control; Using The Loytec Dali Gateway - Philips OccuSwitch DALI LRM2070 User Manual

OccuSwitch DALI
User Guide
Page 38
5.3

Using a universal DALI gateway

This method works with all DALI gateways, designed to
be used with DALI networks . 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 . All limitations seen by the DALI controller are
not present with the gateway .
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) . Some gateways will detect the
OSD as sensor as well .
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 . 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 .3 . 1

Pitfalls and exceptions

• All settings that are being changed in the LRM209x will
be saved in the OSD . 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 .
• If you select the first scene (scene1) the OSD will not
react, instead it will enable the automated mode,
including daylight control
• Most 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 .
5 .3 .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, 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 .
This function will also enable corridor linking . This ensures
that sections will be lit (optional to a lower level when not
in use by itself) if other sections are still occupied . The
main application area is, as the name suggests, corridors .
5.4

Using the Loytec DALI gateway

All the functions mentioned above gateway are possible,
but the Loytec L-DALI supports specific OSD features . It
supports these functions to both LON and BACnet .
5 .4 . 1

Energy measurement

The combination of the Loytec L-DALI gateway and
OSD gives a simple energy measurement system .
Measurements and calculations are done automatically
and without commissioning . You only need to fill in the
power of the luminaires connected to a OSD and the
system does the rest .
D Note
This system assumes that all luminaire in the section
of the gateway are off the same type and power, which
will be the case in an office .