Siemens LMV50 series

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Building Technologies Basic Documentation LMV5... CC1P7550en
7 Boiler controller / load controller 22.05.2018
7 Boiler controller / load controller
7.1 General
The boiler controller integrated in the LMV5 is a digital PID boiler temperature controller
/ a boiler pressure controller, which depends on the connected boiler sensor.
The controller can be operated using self-setting = adaption or by manually setting the
controller parameters (P, I, and D parts).
On fuel changeover, the control characteristics for modulating or multistage burners are
automatically adapted if required.
The internal controller is available as an option for use with the LMV51:
∂ LMV51.0 = with no load controller
∂ LMV51.1 = with load controller
For LMV50, LMV51.3, and LMV52, the load controller is integrated as standard.
Β
Note!
For operation and parameterization, refer to chapter Display and operating unit AZL5.
7.2 Connection diagram
X63
Pt100
Output
0-10 V 0-10 V
4
-
2
0
m
A
0
F
E
X62
X61
X60
Pt / Ni 1000
FE
OUTPUT
SET POINT
ACT. VALUE T EMP.
7550a05en/0118
F E
4 - 2 0 m A
0
P o w e r : S e n s .
4 - 2 0 m A
0
F E
Setpoint or
output
Actual value
pressure or temp.
Actual temp.
I1 = Pt 100
I4 = Pt / Ni 1000
Inputs 1 and 4
Figure 45: Connection diagram – temperature or pressure controller (internal load controller (LC)