Siemens LMO44 Series Installation Instructions

11/18
Building Technologies CC1N7130en
15.03.2018
Technical data (cont´d)
Detector current
required
(with flame)
Perm. detector
current
(without flame)
Possible detector current
with flame
(typically)
QRB1 ¹)
Min. 45 µA Max. 5,5 µA 100 µA
QRB3 ¹)
Min. 45 µA Max. 5,5 µA 100 µA
QRB4 ¹)
Min. 45 µA Max. 5,5 µA 70 µA
QRC ¹)
Min. 45 µA Max. 5,5 µA 70 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
Detector current in operation:
- Flame signal stable
- Green signal lamp (LED) steady on
QRB ¹)
<45 µA >45 µA
QRC ¹)
<45 µA >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 QRC
12
11
LMO...
bl
µA DC
+
QRB...
7130v01/0700
sw
1211
LMO...
1
swbl
br
µA DC
+
QRC1...
7130v02/0700
Legend
µA DC DC microammeter
with an internal
resistance of
Ri = max. 5 kς
bl Blue
sw Black
br Brown
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.
Β
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.
Flame supervision with
QRB or QRC
Green signal lamp
(LED) for indication of
operating state
Measuring circuit
for detector current

Siemens LMO44 Series Specifications

General

Brand	Siemens
Model	LMO44 Series
Category	Control Unit
Language	English