Temperature Or Pressure Controller (Internal Load Controller Lc); General; Connection Diagram; Operating Modes With The Load Controller - Siemens LMV51 Series Basic Documentation

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5 Temperature or pressure controller
(internal load controller LC)

5.1 General

The internal «load controller» is made available as an option to the LMV51... .
This is a digital PID controller for the control of temperature or pressure, featuring self-
setting or manual setting of the control parameters.
On fuel changeover, the control characteristics for modulating or multistage burners are
automatically adapted if required.
For operation and parameterization, refer to chapter «AZL51...»

5.2 Connection diagram

Output Input 3
Setpoint or
output
OUTPUT
SET POINT
X63 X62
1

5.3 Operating modes with the load controller

For the connection of a load controller, the LMV51... can be operated in different
configurations. In that case, the internal load controller, different external load
controllers, or a load controller via a BMS can be used.
To ensure all involved bus users (BU, LC, AZL51...) are correctly configured, the global
parameter «LC_OptgMode» will be defined.
This parameter is set on the AZL51... when selecting the operating mode and is
delivered to all bus users involved. Then, each bus user makes the configurations
required for the relevant operating modes.
Parameter: LC_OptgMode (ExtLC / IntLC / IntLC o.DDC / IntLC DDCan /
ExtLC analg / ExtLC o.DDC)
Basic Documentation LMV51...

5 Temperature or pressure controller (internal load controller LC)

LR - connections
Input 2
Actual value
pressure or temp.
ACT. VALUE
X61
1 1
LMV51
Inputs 1 and 4
Actual temp.
I1 = Pt 100
I4 = Pt / Ni 1000
TEMP.
X60
1
Pt100
Pt / Ni 1000
7550a05E
CC1P7550en
29.05.2002