Siemens Synco 700 Series Basic Documentation page 101

Zone addressing
Setting the room control
combination
Application example 2
Note
Zone addressing
Settings for the slave
ventilation controller(s)
Building Technologies
HVAC Products
QAW740
Room unit
Geogr zone: 1
Room control combination
Room control combination
Room control combination
Room control combinations featuring multiple ventilation controllers
When a space is controlled by more than one ventilation controller (e.g. two
RMU7x0B controllers (and they must be RMU7x0B controllers) controlling the
temperature in a warehouse) the controllers can exchange information such as
room temperature, operating mode and setpoint over the KNX bus.
With this room control combination, one ventilation controller must be set as the
master and all the others as slaves.
QAW740
Room unit
Geogr zone = 2
Within the room control combination, the slave ventilation controllers operate with
the same operating mode as the master.
The slave controllers can use either the same setpoints as the master, or individual
setpoints.
Basic documentation: Communication via the KNX bus
Appendix
RMH...
Operating mode
Heating circuit 1, master
Geogr zone: 1
Master
Transmits room setpoint and operating mode
Slave, external setpoint
Receives room setpoint and operating mode
Slave, internal setpoint
Retains its own room setpoint as valid, but adopts the
operating mode from the master.
RMU...
Room operating mode
Ventilation 1
Geogr zone = 2
Room control comb. =
Master
RMH...
Operating mode
Heating circuit 2, slave
Geogr zone: 1
RMU...
Room operating mode
Ventilation 2
Geogr zone = 2
Room control comb. =
Slave ext. setpoints
101/120
CE1P3127en
30.08.2007