User Manual

Siemens Building Technologies CM1N5483E / 10.1998
Landis & Staefa Division 3/8
90
180
300
0
N
[ s ]
10
20
30
5
½
[ min ]
QPA82.2
931124 A
3
5483Z01
21
400
100
50
[ lx ]
200 800
1600
1 Setting potentiometer for switch on delay (HVAC control output); typical setting: 90 s
N = Emergency operation (refer to «Commissioning notes»)
2 Setting potentiometer for switch off delay (HVAC control output); typical setting: 10 min
3 Setting potentiometer for daylight switching threshold (control output for lighting); typical setting: 400 Lux
To ensure environmentally compatible disposal, the larger plastic components are
labeled with a material description as per ISO/DIS 11 469.
For the correct detection of persons, the detector's location is of utmost importance.
It should be chosen such that most movements of the people in the space will be within
the detection zone. This is a mandatory requirement for the control of lighting systems.
Depending on the application, it may be necessary to use the QPA82.2 or the QPA82.1
(180° surveillance, refer to data sheet 5482). Both units can also be combined, if
desired.
• People must be present within the detection zone.
• The presense detector must be located such that it clearly detects all people.
• The presense detector cannot see through glass. For this reason, glass doors and
windows confine the detection zone.
• Interference by partitions, shelves, plants, etc., must be avoided
• The detection zone has the shape of a pyramid. The area covered on the floor is
exactly a square (see illustration above). The size of that square is determined by the
installation height. If seated people shall be detected, the installation height should be
no more than 4 m.
• The intensity of light is measured in the detector's viewing direction. Only daylight is
measured, not artificial light.
• When using incandescent or halogen lamps, daylight control can be used only when
the intensity of the artificial light lies below the selected LUX level or when there is a
certain distance between the detector and the lamp. If this is not observed, there may
be oscillations (blinking at intervals of a few minutes).
• Special care should be taken in the case of indirect light sources.
When mounted on the ceiling, the unit is automatically out of reach and thus safe
against vandalism.
• Moving objects (curtains covering radiators, revolving doors, etc.) that are close to the
presense detector (within 2 m).
• Objects that warm up rather quickly (lamps, air inlets, radiators, etc.) and that are
close to the presense detector.
• Direct solar radiation hitting the presense detector.
Setting elements
Disposal
Engineering notes
Checklist for planing
Detection of movements
Measurement of intensity
of light (only for the control
of lighting systems)
Vandalism
Possible sources of error