ise smart connect KNX Hue
Frequently asked questions (FAQ)
Order No. 1-0002-003
Product Manual Page 54 (60)
Why does the colour temperature setting function not work?
The colour temperatures cannot be changed for some lights such as the Philips Hue Lux. The
colour temperature communication object is only able to switch such lights on and nothing else.
Use a different light type, such as the Philips Hue, to achieve the desired effect.
Why is my ise smart connect KNX Hue restarting?
If the device performs another restart, please check whether you used the sign "\" in the device
name. This is not allowed and requires a factory reset (see Chapter 6.7 Factory reset).
Why are RGB codes sent by the KNX not applied correctly or why do colours take time to
change?
RGB codes are converted into the CIE colour space and Hue lights are addressed in the xy col-
our space (CIE colour space). However, the lights do not support the complete colour space,
just a specific gamut. A correction is applied to colour values outside this gamut with the best
possible colour value within the gamut specified for the light concerned.
Depending on the light's firmware version, there may be a subsequent change to the colour val-
ue if the light is unable to reproduce the specified colour value precisely.
How long does it take before changes to Hue lights that I have made on my smartphone
are sent to the KNX?
The Philips Hue Bridge polls the current state of Hue lights every three seconds. Consequently,
it can take up to three seconds before the current state is available from the KNX.
The current value for the state changes triggered via the KNX are provided by the KNX as soon
as the switching command has been successfully sent to the Philips Hue Bridge.
