User Manual

92
Remarks of Siemens
This section outlines how Siemens interprets the functions and processing functions according
to EN 15232-1:2017.
5.1
2 A warning function overrides the turn-off signal by the user when using a scheduler to turn off
lighting.
For switchable lights, they are flashed on/off and turned off after a grace period unless overridden
by a user.
For dimmable lights, they are dimmed to a preset warning level and turned off after a grace period
unless overridden by a user.
3 They provide the highest energy savings as lights are typically manually turned on by the user at
lower light levels than is required for occupancy detectors that automatically turn lights on.
5.2
3 Daylight harvesting based on closed-loop automatic light-level control in combination with
presence detection (modes: Manual On/Dimmed (Off) or Manual On/Auto Off) using a sensor in
the room is a simple way to integrate automated blinds control.
6
Reasons for blind control:
- Reduces external light can prevent blinding room users.
- Reduces heat radiation in the room saves cooling energy.
- Allowing heat radiation in the room saves heating energy.
- Closed blinds reduce heat loss in the room.
2 Using shadow-edge tracking or sun-tracking individually or in combination provides solar
protection from direct solar irradiance resulting in lower heat gain and at the same time uses
indirect and diffuse sunlight for daylight harvesting in combination with automatic light level
control (see 5.2-1).
3 The key component is a presence detector with three control channels for HVAC, lighting and
solar protection. Coordination between lighting and solar protection control is achieved via the
light level in the room. Coordination between solar protection control and HVAC is achieved via
the room temperature.