Basic Documentation

22 / 42
Siemens VAV Compact Controller Modbus RTU A6V10631862_en--_e
Smart Infrastructure 2021-10-26
5.3 Setting examples
5.3.1 Symbols and parameters
Volume symbols with “point” ( ) and without point (V) shall have the same
meaning, i.e., they all shall refer to volume flows.
Volume flow [%]
Minimum volume flow [%]
Maximum volume flow [%]
Volume flow of supply air controller [%]
Volume flow of extract air controller [%]
Volume flow of supply air controller (Master) [%]
Volume flow of extract air controller (Slave) [%]
5.3.2 Min/max control by the supervisory controller
When setting the minimum / maximum air volume flow in the supervisory controller,
the VAV Compact Controller has to be configured with = 0% and = 100 %.
VAV ratio control 1 : 1
Supply air
Extract air
Vmin
Vmax
Vmin
Vmax
Supervisory controller
20 %
80 %
20 %
80 %
VAV Compact Controller
0 %
100 %
0 %
100 %
Reference signal: Y
supply_air
= Y
extract_air
= 35 %
Result: V
supply_air
= V
extract_air
= 35 %
V

V

min
V

max
V

supply_air
V

rextract_ai
V

master
V

slave
V

min
V

max
V

100
min
V

max
V

s upply_ air
V

100
80
60
40
20
-20
0 20 60 80
0
100
60
40
20
120
Reference signal
Y
supply_air
V

100
min
V

max
V

100
80
60
40
20
-20
0 20 60 80
0
100
60
40
20
120
Reference signal
Y
extract_air
V

Supply air controller Extract air controller
rextract_ ai
V

Legend to the setting
examples
Setting example A1