Siemens LMO44 Series User Manual

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Building Technologies Division CC1N7130en
Infrastructure & Cities Sector 22.08.2013
Technical data (cont´d)
Detector current
required
(with flame)
Perm. detector
current
(without flame)
Possible detector current
with flame
(typically)
QRB... ¹)
Min. 45 µA
Max. 5.5 µA
100 µA
QRC... ¹)
Min. 45 µA
Max. 5.5 µA
70 µA
Detector current in operation:
- Flame signal instable
- Green LED flashing
Detector current in operation:
- Flame signal stable
- Green 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
12
11
LMO...
1
swbl
br
µA DC
+
QRC1...
7130v02/0700
Legend
µA DC DC microammeter
with an internal
resistance of
Ri = max. 5 k:
bl Blue
sw Black
br Brown
As an alternative to detector current measurement, the Interface OCI400 / with PC
software ACS400 / ACS410 can be used. In that case, the DC microammeter is not
required.
Flame supervision with
QRB... or QRC...
Green LED for
operational status
indication
Measuring circuit
for detector current

Siemens LMO44 Series Specifications

General

Brand	Siemens
Model	LMO44 Series
Category	Control Unit
Language	English