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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
-1
0
V
0
-1
0
V
4-
20
m
A
0
F
E
X62
X61
X60
Pt / Ni 1000
F
E
OUTPUT
SET POINT
ACT. VALUE
TEMP.
7550a05en/0118
F
E
4-
20
m
A
0
P
ow
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)
