User Manual

Siemens Building Technologies CM1N5482E / 10.1998
Landis & Staefa Division 3/8
90
180
300
0
N
[ s ]
400
100
50
[ lx ]
QPA82.1
931124 A
10
20
30
5
½
[ min ]
3
5482Z01
21
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 QPA82.1 or the QPA82.2
(360° surveillance, refer to data sheet 5483). Both units can also be combined, if
desired.
• People must be present within the detection zone.
• The presence detector must be located such that it clearly detects all people.
• The presence 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.
• In the case of individual workplaces that must be clearly separated vertically, and in
corridors, the QPA82.1 can also be fitted to the ceiling. The horizontal detection
zones then become a vertical «curtain» (refer to illustration «Ceiling mounting»).
• The detection zone is basically unlimited, but sensitivity is reduced as the distance to
the detector increases.
• The intensity of light is measured in the detector's viewing direction. Only daylight is
measured, not artificial light.
The effect of the opposite surface must be taken into consideration when adjusting
the brightness. In the case of a bright window, for example, the setting must be higher
than in the case of a dark wall.
• 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).
• Moving objects (curtains covering radiators, revolving doors, etc.) that are close to the
presence 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.
In public buildings, the units must be installed out of reach ( ≥ 1.8 m).
Setting elements
Disposal
Engineering notes
Checklist for planning
Detection of movements
Measurement of intensity
of light (only for the control
of lighting systems)
Possible sources of error
Vandalism