Siemens LGB22.330A27 - Flame supervision with blue-flame detector; Flame supervision with UV detector

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Building Technologies CC1N7435en
HVAC Products 11.01.2007
Perm. detector current during the prepurge
time (dark current)
max. 5 µA
Detector current required during
operation
min. 50 µA
Possible detector current in operation max. 80 µA
Measuring circuit with the QRC1...
M
sw
-+
br
bl
1
12
2
LGB3...
7435v02/0601
QRC1
Legend
M Microammeter Ri max. 5000 Ω
sw Black wire
br Brown wire
bl Blue wire
The QRC1... has been designed specifically for blue-burning flames. Incidence of light
is from the front and laterally. The flame detector is secured by means of a soft plastic
plug. 3-core connection (preamplifier integrated in the detector casing). For the different
types of flame detectors, engineering notes and technical data, refer to Data Sheet
N7716.
Mains voltage AC 220 V –15 %...AC 240 V +10 %
Mains frequency 50...60 Hz ±6 %
Power consumption 4.5 VA
Degree of protection IP 40
Perm. ambient temperature
- In operation
- During transport and storage
-20...+60 °C
-40...+70 °C
Perm. length of cable from QRA... to
AGQ1...A27 (use separate cable)
max. 20 m
Mounting position optional
Perm. length of connecting cable from
AGQ1...A27 to LGB...
max. 20 m
Weight of AGQ1...A27 approx. 140 g
At mains voltage UN:
AC 220 V AC 240 V
Detector voltage at QRA... (with no load)
Up to the end of «t10» and after controlled shutdown DC 400 V DC 400 V
From the beginning of «t1» DC 300 V DC 300 V
Detector voltage
Load by DC measuring instrument Ri > 10 MΩ
Up to the end of «t10» and after controlled shutdown DC 380 V DC 380 V
From the beginning of «t1» DC 280 V DC 280 V
DC detector signals with UV detector QRA... Min. required Max. possible
Measurement on the QRA... 200 µA 500 µA
Flame supervision with
blue-flame detector
QRC1...
Flame supervision with
UV detector QRA... and
A
GQ... for LGB21... /
LGB22... / LGB41...