Yellow Flame Detector Qrb4 - Siemens LMV37.4 Series Basic Documentation

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Building Technologies

4.4.4 Yellow flame detector QRB4

Open-circuit voltage at terminal QRB4
(X10-05 pin 3)
Permissible length of QRB4 detector
cable (laid separately)
Threshold values when flame is supervised by QRB4
Start prevention (extraneous light)
Operation
Note!
In the case of the QRB4, the maximum intensity display is limited to approximately
40% due to the system (parameter 954).
Note!
Connection of QRB4 cables!
Blue cable of QRB4 to terminal X10-05 pin 4.
Black cable of QRB4 to terminal X10-05 pin 3.
Otherwise, the QRB4 will not work.
Basic documentation LMV37.4...
4 Technical Data
Approx. 5 V DC
3 m (wire to wire100 pF/m)
Flame intensity (parameter 954) ≥10%
Flame intensity (parameter 954) >16%
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CC1P7546en
17.12.2018