Main Controller And Primary Controller; Overview Of Function Block; Configuration - Siemens Synco 700 Basic Documentation

Controller diagrams
Basic configuration
Extra configuration
Building Technologies
HVAC Products
8

Main controller and primary controller

8.1

Overview of function block

a a d d d a d d d
B
V
Heat requis.
Main controller
Main
Heat demand
pump
B
Y Q Q Y
In terms of control principle, both function blocks are primary controllers. For this rea-
son, the term "primary controller" is used for both function blocks in the following
descriptions, unless specific reference to function block "primary controller" is made.
VlvMn/PrCtr
Mn/SyPu
Mn/SyPu B
T
TFl
T
Mn/SyPuEr
TRt
Mn/SyPuEr B
Mn/SyPuErFlow
Primary controller (use of mixing valve)
Mn/SyPu Main / system pump
Mn/SyPu B Main / system pump B
Mn/SyPuEr
Fault input main pump / system pump
Mn/SyPuEr B
Fault input main pump / system pump B
Mn/SyPuErFlow Flow supervision main pump / system pump
TFl Flow temperature sensor
TRt Return temperature sensor
VlvMn/PrCtr
Mixing valve / 2-port valve
8.2

Configuration

With plant types H1-x, the main controller comes activated per default. In that case, it is
always the valve, the flow and return temperature sensor that are preconfigured.
With plant types H2-x, the primary controller comes activated per default. In that case, it
is always the mixing valve, a pump and the flow temperature sensor that are preconfig-
ured.
For more detailed information, refer to section 3.2 "Basic configuration".
With all the other plant types, the function blocks can be activated via "Extra configura-
tion". A function block is activated by assigning an output to a terminal.
Modular Heating Controller RMH760B
8 Main controller and primary controller
a a
Q
VlvMn/PrCtr
Main controller (use of heat exchanger)
d d d a d d d
B
V
Primary controller
System
pump
B
Q Q
Y
Mn/SyPu B
T
TFl
T
Mn/SyPuEr
TRt
Mn/SyPuEr B
Mn/SyPuErFlow
Mn/SyPu
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CE1P3133en
05.02.2007