Siemens LMV51 Series Basic Documentation page 264

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19 Addendum 4: LMV52... with O
control and O
19.1 General
The LMV52... system is an extended LMV51... system. A special feature of the
LMV52... is control of the residual oxygen content to increase the boiler's efficiency.
In addition to the features of the LMV51..., the LMV52... provides O
trol of a maximum of 6 actuators, control of a VSD, and acquisition of cumulated fuel
consumption and current fuel throughput. The LMV52... system uses an O
(QGO20...), an external O
tem.
The PLL... O module is a detached measuring module for the QGO20... sensor and
2
for 2 temperature sensors (Pt1000 / LG-Ni 1000). The module communicates with the
LMV52... via CAN bus.
The fuel meters must be connected directly to the fuel-related inputs of the basic unit.
On the AZL5... display and operating unit, the individual consumption values can be
read out and the meter readings can be reset.
M
Supply air
temperature
sensor
LMV52.200...
Basic Documentation LMV5...
19 Addendum 4: LMV52... with O2 trim control and O2 module
module
2
module, and the standard components of the LMV51... sys-
2
CAN
trim
2
trim control, con-
2
sensor
2
QGO20...
Flue gas
temperature sensor
O2 module
PLL...
CC1P7550en
13.08.2004