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Constant Light Output (CLO)
Traditional light sources suffer from depreciation in light output
over time. This applies to LED light sources as well. The CLO
feature enables LED solutions to deliver a constant lumen output
throughout the life of the LED module. Based on the type of LEDs
used, heat sinking and driver output current, a correction of the
lumen depreciation can be entered into the driver. The driver then
counts the number of operating hours and will correct the output
current based on this input.
Since a CLO curve is not generic, the OEM needs to determine the
appropriate CLO curve. This can be used to differentiate on e.g.
lumen output or power consumption over lifetime.
The CLO feature can be programmed with the Philips MultiOne
configurator
tool.
More
information
can
be
found
on
www.philips.com/multione.
OEM Write Protection (OWP)
OWP allows the OEM to protect their driver setting over
the lifetime of the driver by using a password. Drivers equipped with
OWP will show this in the feature list if read out by the tool
MultiOne. Specific features and also the OWP feature itself can
be enabled and protected with that password to prevent
unauthorized changes. The password management is under the
responsibility of the company which is setting it.
Driver diagnostics
Xitanium LED Xtreme SR drivers offer a Diagnostics feature. The
purpose of Diagnostics is to gather information and help diagnose
the history of the driver and connected LED module. The
Diagnostics feature consist mainly of counters which keep track of
specific variables like the number of startups of the driver, operating
hours, temperature of driver and LED modules, current and voltages
etc. When the driver is shutdown the diagnostics data is stored
automatically in non-volatile memory. Diagnostics can also be
accessed through the SR interface with a password provided to SR
Certified partners.
More information on the diagnostics see instruction manual of
MultiOne Engineering at: www.philips.com/multione
Energy Metering
The SR driver has built-in energy metering
capability
and
can report metered energy and actual power consumption. The
metering
is
compliant
per
EN50470-1
and
EN50470-3.
Accuracy
of
the
power
measurement is the higher of
following two values across the entire driver operating window:
0.5W or +/-1% of measured input power. The energy metering
feature stores consumption parameters in the non-volatile
memory bank specified in the DALI 2 standard
and
the SR
Certified specification.
Design-in Guide - Philips Xitanium LED Xtreme SR driver
8
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