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1. Brief description of the system
The Quadro F12-SIL is a warning light for the signalling of dangerous situations in safety relevant applica-
tions, e.g. as an intrinsic part of an E/E/PE system (according to EN61508). Optical warning signals with high
light intensity and short duration, with a maximum flash energy of 10 Joules can be generated. This allows
for very good detection over great distances with only low power consumption. A distinct attention effect for
people is reached by the high difference of luminance to the surrounding area. The flashing light is concept-
ed for use in buildings as well outdoors. Driving rain and condensation do not damage it.
The generation of the optical warning signal (see Fig. 1) is monitored internally by an optical sensor and
corresponding evaluation circuit. If an optical warning signal is generated, a relay activates permanently with
forcibly guided contacts. A fault can be interpreted with a superior control.
Fig. 1 Illustration of the functionality of the switching parts of the warning light with monitoring
Operational voltage
Fig. 2 Generation of the optical warning signal
Operational voltage
Fig. 3 Optical monitoring equipment (diagnosis channel)
085501930i_de-en-fr.docx
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Optical
receiver
Flash tube
Flashing light
1
2
3
4
Operation voltage
Operation voltage
Flashing monitor
Flashing light
DC-DC- converter
Voltage
controller
Monitoring circuit
Fault signals
Alarm relay with forcibly guided
contacts
(normal operation S1 open,
S1
S2 closed -> no fault)
S2
7
5
6
8
Fault alarm contacts
max. 230V~ /6A
min. 5V= /10mA
Charging capacitor
Flash tube
Threshold
Integra-
switch
tor
17 / 44
Timer
Impulse
Opt.
shaper
Sensor
Drwg-no.: 30084-004-5i
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