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
VAV ratio control, 20 % constant excess supply air volume flow (positive
pressure in the room)
Supply air
Extract air
min
V

max
V

min
V

max
V

Supervisory controller
20 %
80 %
0 %
60 %
VAV compact controller
0 %
100 %
0 %
100 %
Reference signal: Y
supply_air
= 35 %, Y
extract_air
= Y
supply_air
- 20 % = 15 %
Result: V
supply_air
= 35 %, V
extract_air
= 15 %
100
min
V

max
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 40 60 80
0
100
80
40
20
120
Reference signal
Y
extract_air
V

Supply air controller Extract air controller
supply_ air
V

rextract_ ai
V

VAV ratio control, 20 % constant excess extract air volume flow (negative
pressure in the room)
Supply air
Extract air
min
V

max
V

min
V

max
V

Supervisory controller
20 %
80 %
40 %
100 %
VAV compact controller
0 %
100 %
0 %
100 %
Reference signal: Y
supply_air
= 35 %, Y
extract_air
= Y
supply_air
+ 20 % = 55 %
Result: V
supply_air
= 35 %, V
extract_air
= 55 %
100
min
V

max
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 40 80
0
80
60
20
120
Reference signal
Y
extract_air
V

Supply air controller Extract air controller
supply_ air
V

rextract_ ai
V

Setting example A2
Setting example A3