Siemens LMV37.4 Series User Manual

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Building Technologies Basic documentation LMV37.4... CC1P7546en
4 Technical Data 17.12.2018
4.4.5 Blue-flame detectors QRC
Check the intensity of flame with the AZL2.
For system-specific reasons, the display of maximum flame intensity by the AZL2 is
limited to approx. 55%.
Caution!
Flame detectors QRC are only suited for AC 230 V operation.
Start prevention (extraneous light) with
I
QRC
Ca. 15 µA, display approx. 10 %
Intensity of flame (parameter 954)
Operation with IQRC
Ca. 25 µA, display approx. 16 %
Intensity of flame (parameter 954)
Required detector current
(with flame)
Permissible detector current
(without flame)
Typical detector current
(with flame)
QRC
Min. 70 µA Max. 5,5 µA 100 µA
The values given in the table above only apply under the following conditions:
- Mains voltage AC 230 V
- Ambient temperature 23 °C
LMV...
sw bl
br
µA DC
+
7541v12/1110
354
X10-0
5
Legend
µA DC DC-Mikroampèremeter
an internal resistance of
Ri = max. 5 k
bl blue
sw black
br brown
Figure 9: Measuring circuit QRC
Measuring circuit for
detector current
measurement

Siemens LMV37.4 Series Specifications

General

Brand	Siemens
Model	LMV37.4 Series
Category	Controller
Language	English