Changeover Via Analog Input - Siemens Synco 700 Series Basic Documentation

Changeover source
analog input AI
Note
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Building Technologies
HVAC Products
9.2.2

Changeover via analog input

The outside temperature sensor is wired to universal input "x"(configured as an
analog input) of the "H/C changeover" function block in controller 1 (RMU7x0B).
The release relay in controller 1 affects the generation of heating/refrigeration
energy. The heating/cooling changeover signal affects all controllers (in this case
controller 1 and controller 2) in the same heating/refrigeration distribution zone.
If the source of the H/C changeover is an analog signal, then two limit values must
be selected for the changeover. For further information refer to the basic
documentation, manual P3150.
Htg/ClgCoil 1
1
M
1
T
AI
x
1
H/C changeover
Q
x
2
H/C changeover
Q
Basic documentation: Communication via the KNX bus
Appendix
T
KNX
H/C changeover signal
Heat/refrig distribution zone 1
x
Supervision Controller
1 2 3
S1 S1
Heat demand
S2
S2
S3
23
Q Y
d
x
Supervision Controller
1 2 3
S1 S1 S1
Heat demand
S2
S2 S2
S3
23
Q Y
d
Htg/ClgCoil 2
2
M
2
x
Controller
Supervision
1 2 3
S1 S4 S4 S4
Refrig demand
Kältebedarf
S2 S5
Q d Y
x
Controller
Supervision
1 2 3
S4 S4 S4
Refrig demand
Kältebedarf
S5
Q d Y
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CE1P3127en
30.08.2007