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Operating mode "con"
Variable air volume (VAV)
control
Forced control in VAV
mode
Note
24 / 42
Siemens
Building Technologies
5.2
Operating modes
The following parameters have to be set or checked in operating mode "con":
Parameter
Setting
Type
con
Setpoint YC
0...10 V
2...10 V
1.00...3.16
V
n
20...120 %
V
max
-20...100 % Minimum air volume flow
V
min
Dir
r or L
The VAV compact controllers operate in VAV mode provided a DC 0...10 V or DC
2...10 V signal is fed into the input YC. The setpoint signal controls the operating
range
V
...
V
.
min
max
Vmin [%]
Vmax [%]
YC 0...10 V
1
Reference signal
2
Output signal
3
Control range
Using the Y1 and Y2 control signals, the damper of the air volume controller can be
driven either to the fully open or fully closed position.
VAV operating mode (Type "con")
YC
DC 0/2...10 V
Y1
open
Y2
open
Action
VAV control with
DC 0/2...10 V
setpoint
compensation
Setting
V
0 % and YC = 0 V drives the actuator to position "fully closed".
min
VAV compact controller G..B181.1E/3 | VAV modular controller ASV181.1E/3
Description
VAV or CAV mode
Air volume flow reference signal
(setpoint)
Characteristic value for nominal air
volume flow, set by manufacturer
(OEM)
Maximum air volume flow
Opening direction of air damper
r = Clockwise (CW)
L = Counterclockwise (CCW)
Vmin [%]
YC 2...10 V
1
Reference signal
2
Output signal
3
Control range
G0
G0
open
G0
Dir r
VAV control with
rotation CW
DC 0/2...10 V
Dir L
setpoint
rotation CCW
compensation
"Fully open"
Siemens factory
setting
con
0...10 V
1.00
100 %
0 %
r
Vmax [%]
3
1
open
G0
Dir r
rotation CCW
Dir L
rotation CW
"Fully closed"
CE1P3544en
2016-02-26
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