Basic Documentation

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Siemens VAV compact controller KNX/PL-Link G..B181.1E/KN CE1P3547en
Smart Infrastructure 2021-10-252021-10-25
5.3.4 Master/Slave operating mode
To control supply air and extract air in KNX LTE-mode environments (Synco 700
Series C or newer), master/slave operating mode is required. In this mode, the
actual value signal of the master controller (supply air) is the reference signal for
the slave controller (extract air), cf. also section 6.2.2.
VAV ratio control 1 : 1
Supply air (Master)
Extract air (Slave)
min
V

max
V

min
V

max
V

Supervisory controller
0 %
100 %
0 %
100 %
VAV compact controller
20 %
80 %
0 %
100 %
Reference signal: Y
master
= 25 %
Result: V
master
= V
slave
= 35 %
100
min
V

max
V

100
80
60
40
20
-20
0 40 60 80
0
100
60
40
120
Reference signal
Y
master
V

100
min
V

max
V

100
80
60
40
20
-20
0 20 60 80
0
100
60
40
120
Reference signal
V

Supply air controller (Master) Extract air controller (Slave)
master
V

slave
V

Setting example C1