Basic Documentation

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Siemens VAV compact controller G..B181.1E/3 | VAV modular controller ASV181.1E/3 CE1P3544en
Smart Infrastructure 2021-10-26
5.4 Setting examples
5.4.1 Symbols and parameters
Volume symbols with “point” (
V

) and without point (V) shall have the same
meaning, i.e., they all shall refer to volume flows.
V

Volume flow [%]
min
V

Minimum volume flow [%]
max
V

Maximum volume flow [%]
supply_air
V

Volume flow of supply air controller [%]
rextract_ai
V

Volume flow of extract air controller [%]
master
V

Volume flow of supply air controller (Master) [%]
slave
V

Volume flow of extract air controller (Slave) [%]
5.4.2 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
min
V

= 0% and
max
V

= 100 %.
VAV ratio control 1 : 1
Supply air
Extract air
min
V

max
V

min
V

max
V

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 %
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