Changeover Via Digital Input - Siemens Synco 700 Series Basic Documentation

Changeover source
digital input DI
Changeover signal via
KNX
T
Flow
Return
DI
T
96/120
Building Technologies
HVAC Products
9.2.1

Changeover via digital input

The changeover thermostat in the flow is wired to universal input "x"(configured as
a digital input) of the "H/C changeover" function block in controller 1 (RMU7x0B).
The heating/cooling changeover signal transmitted over the KNX bus affects all
controllers (in this case controllers 1 and 2) in the same heating/refrigeration
distribution zone, provided all controllers have the same heating/refrigeration zone
address.
Htg/ClgCoil 1
T
1
M
1
Heating/cooling changeover signal
Heat/refrig distribution zone 1
x
Supervision
1
H/C changeover
Heat demand
23
Q
x
Supervision
2
H/C changeover
Heat demand
23
Q
Basic documentation: Communication via the KNX bus
Appendix
KNX
x x
Controller Supervision
1 2 3
S1 S1 S1
Refrig demand
Kältebedarf
S2
S2 S2
S3
Q d Y Q d
x x
Controller Supervision
1 2 3
S1 S1 S1
Refrig demand
Kältebedarf
S2
S2 S2
S3
d
Q d Y Q
Htg/ClgCoil 2
T
2
M
2
Controller
1 2 3
S4 S4 S4
S5
Y
Controller
1 2 3
S4 S4 S4
S5
Y
CE1P3127en
30.08.2007