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
5.4.3 Min/max control by the VAV compact controller
When setting the minimum / maximum air volume flow in the VAV compact
controller, the supervisory controller must be set to V
min
= 0% und V
max
= 100 %.
With this setting, the supervisory controller reference signal for both the supply air
and extract air controller is the same. Thus, supply air / extract air control with a
single reference signal is possible.
VAV ratio control 1 : 1
Supply air
Extract air
min
V

max
V

min
V

max
V

Supervisory controller
0 %
100 %
0 %
100 %
VAV compact controller
20 %
80 %
20 %
80 %
Reference signal: Y
supply_air
= Y
extract_air
= 25 %
Result: V
supply_air
= V
extract_air
= 35 %
100
min
V

max
V

100
80
60
40
20
-20
0 40 60 80
0
100
60
40
120
Reference signal
Y
supply_air
V

100
min
V

max
V

100
80
60
40
20
-20
0 40 60 80
0
100
60
40
120
Reference signal
Y
extract_air
V

Supply air controller Extract air controller
supply_ air
V

rextract_ ai
V

Setting example B1