Boiler Controller / Load Controller; General; Connection Diagram - Siemens LMV50 Series Manual

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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.
Note!
For operation and parameterization, refer to chapter Display and operating unit AZL5.

7.2 Connection diagram

Output
OUTPUT SET POINT
X63
Figure 45: Connection diagram – temperature or pressure controller (internal load controller (LC)
Basic Documentation LMV5...
7 Boiler controller / load controller
Setpoint or Actual value
output pressure or temp.
ACT. VALUE
X62 X61
Inputs 1 and 4
Actual temp.
I1 = Pt 100
I4 = Pt / Ni 1000
TEMP.
X60
Pt100
Pt / Ni 1000
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CC1P7550en
22.05.2018