Siemens LMO14 Series Installation Instructions Manual page 13

Technical data (cont´d)
Flame supervision with
QRB or QRC
Green signal lamp
(LED) for indication of
operating state
Measuring circuit
for detector current
Β
Building Technologies
Detector current
required
(with flame)
QRB1 ¹) Min. 45 µA
QRB3 ¹)
Min. 45 µA
QRB4 ¹)
Min. 45 µA
QRC ¹) Min. 45 µA
¹) The values given in the table above only apply under the following conditions:
- Mains voltage depending on execution AC 120 V or AC 230 V
- Ambient temperature 23 °C
Detector current in operation:
- Flame signal instable
-
Green signal lamp (LED)
flashing
QRB ¹) <45 µA
QRC ¹)
<45 µA
¹) The values given in the table above only apply under the following conditions:
- Mains voltage depending on execution AC 120 V or AC 230 V
- Ambient temperature 23 °C
QRB
12
11 LMO...
7130v01/0700
sw
bl
+
µA DC
QRB...
As an alternative to detector current measurement, the Interface OCI400 with PC
software ACS410 can be used. In that case, the DC microammeter is not required.
Note!
QRB4 cable connection!
Connect the blue QRB4 cable to terminal 11.
Connect the black QRB4 cable to terminal 12.
Otherwise the QRB4 will not function.
Perm. detector
current
(without flame)
Max. 5,5 µA
Max. 5,5 µA
Max. 5,5 µA
Max. 5,5 µA
Detector current in operation:
- Flame signal stable
-
Green signal lamp (LED) steady on
>45 µA
>45 µA
QRC
11 12 1 LMO...
br 7130v02/0700
bl sw
+
µA DC
QRC1...
Possible detector current
with flame
(typically)
100 µA
100 µA
70 µA
70 µA
Legend
µA DC DC microammeter
with an internal
resistance of
Ri = max. 5 kς
bl Blue
sw Black
br Brown
11/18
CC1N7130en
15.03.2018