41/116
Smart Infrastructure Basic Documentation LME7... CC1P7105enr
4 Technical data 24.07.2020
4.12.4 QRC
Warning!
The QRC is only suitable for operation at 230 V AC. Failure to observe this
information poses a risk of damaging the safety functions.
Operating voltage 230 V AC ±15%
Mains frequency
50 to 60 Hz 6%
Required detector current in operation Min. 20 µA (display intensity approx. 35%)
Possible detector current in operation Max. 60 µA (display intensity 100%)
Perm. length of detector cable
(normal cable, laid separately) ¹)
Max. 3 m (core-core 100 pF/m)
¹) Multicore cable not permitted
Check the flame intensity via the AZL2 or the internal LED display (flame current, FL2).
The maximum possible QRC flame current is limited to approx. 60 µA for system-
specific reasons. The maximum display intensity (parameter 954 in the AZL2 or via
internal LED display FL2) corresponds to 100%.
Threshold values when flame is supervised by QRC
Start prevention (extraneous light)
Intensity AZL2 (parameter 954) or FL2 >10%
Flame current >10 µA
Operation, minimum required flame signal
Intensity AZL2 (parameter 954) or FL2 >35%
Flame current Approx. 20 µA
Signaling good/bad flame (LED starts flashing green during operation)
Intensity AZL2 (parameter 954) or FL2 approx. 50%
Flame current Approx. 30 µA
Typical flame signal during operation
Intensity AZL2 (parameter 954) or FL2 ≥60%
Maximum flame signal during operation
Intensity AZL2 (parameter 954) or FL2 ≤100%
Flame current Approx. 60 µA
Parameters AZL2 Function
954 FL2 Flame intensity
The values specified in the table only apply under the following ambient conditions and
may vary under other conditions:
Mains voltage 230 V AC
Ambient temperature 23°C
Detector current in operation:
Flame signal instable
Green LED flashing
Detector current in operation:
Flame signal stable
Green LED steady on
QRC < 50% > 50%
Key
sw Blac
bl Blue
b
Brown
Green LED for
indication of operating
mode
Connection diagram
To Next Page
Loading...
