GIRA
Info
Observer 180 plus
Installation Instructions
Observer 180 plus
28/99
Page: 6 of 13
Intelligent Limit Function
Once the observer has switched on, the brightness is no longer evaluated. The lamps shine on the
brightness sensor, the preset brightness value might be exceeded, and the observer would switch off.
So as not to keep the lighting continuously switched on when movements permanently take place
within the detection field (e. g. beyond dawn), the unit is provided with an intelligent limit function.
The follow-up time (the time when the light still remains on after no more movement has been
detected) is selected as a function of the real on period:
On period
Follow-up time (approx.)
Up to 60 min.
according to the setting
Up to 70 min.
4 min.
Up to 75 min.
2 min.
Up to 80 min.
1 min.
Up to 85 min.
30 sec.
Up to 90 min.
15 sec.
90 min.
Switching-off
Thus, even in the event of permanent movements within the detection field, the observer switches off
after 90 min., at the latest.
Reclosing will only be triggered when the preset brightness value is undercut and a movement is
perceived within the detection field.
2
0 15
30
45
15
30
45
1
0
15
3
0
4
5
15
30
45
Detection Range - Adjustment
To adapt the detection field to the local conditions, the sensor head
can be tilted and turned.
To open and close the connection chamber, it might be necessary
to bring the turned sensor head to neutral position. For this
purpose, turning angle
c
and tilting angle
d
can be read off scales
on the observer enclosure, the desired position being reproducible
any time.
Using the Slip-Fit Aperture
With the aid of the attached aperture, interference sources can be
eliminated by restricting the detection angle. For this purpose, cut
out the aperture and slip it onto the sensor head.
