User Manual

20/22
Building Technologies CC1N7546en
13.04.2018
Technical Data (cont´d)
Open-circuit voltage at terminal QRB4
(X10-05 pin 3)
Approx. 5 V DC
Permissible length of QRB4 detector
cable (laid separately)
3 m (wire to wire100 pF/m)
Threshold values when flame is supervised by QRB4
Start prevention (extraneous light) Flame intensity (parameter 954) ≥10%
Operation Flame intensity (parameter 954) >16%
Β
Note!
In the case of the QRB4, the maximum intensity display is limited to approximately
40% due to the system (parameter 954).
Β
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.
Flame supervision with
QRB4