Siemens LMV51.100C1 User Manual

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Building Technologies Basic Documentation LMV5... CC1P7550en
19 O2 trim control with LMV52 and PLL52 22.05.2018
19 O2 trim control with LMV52 and PLL52
19.1 General
The LMV52 is an extended LMV51. A special feature of the LMV52 is control of the
residual O2 content to increase the boiler’s efficiency.
In addition to the features of the LMV51, the LMV52 provides O2 trim control, control of
a maximum of 6 actuators, control of a VSD, and acquisition of cumulated fuel
consumption and current fuel throughput. The LMV52 uses a QGO20, an external
PLL52, and the standard components of the LMV51.
The PLL52 is a detached measuring module for the O2 sensor and for 2 temperature
sensors (Pt1000 / LG-Ni1000). The module communicates with the LMV52 via CAN
bus.
Combustion air
temperature sensor
O2 module
PLL...
QGO20...
CAN
LMV52...
Flue gas
Temperature sensor
7
5
5
0
z
0
7
e
/
1
0
1
2
Figure 116: LMV52with O2 trim control and PLL52

Siemens LMV51.100C1 Specifications

General

Brand	Siemens
Model	LMV51.100C1
Category	Control Unit
Language	English