User Manual

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Siemens VAV modular controller ASV181.1E/3 CE1N3545en
Building Technologies 2019-03-21
Operating modes
The following parameters have to be set or checked in operating mode “con”:
Parameter
Setting
Description
Siemens factory setting
Type
con
VAV or CAV mode
con
Setpoint “YC”
0…10 V
2…10 V
Air volume flow reference signal (setpoint)
0…10 V
n
V

1…3.16
Characteristic value for nominal air volume flow,
preset by manufacturer(OEM)
1
max
V

20…120 %
Maximum air volume flow
100 %
min
V

-20…100 %
Minimum air volume flow
0 %
Dir
r or L
Opening direction of air damper
r = Clockwise (CW)
L = Counterclockwise (CCW)
r
The VAV modular 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
min
V

…
max
V

.
Vmax [%]Vmin [%]
Vmax [%]Vmin [%]
3
1
YC 0…10 V
1 Reference signal
2 Output signal
3 Control range
YC 2…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
G0
G0
open
Y2
open
open
G0
G0
Action
VAV control with DC
0/2…10 V setpoint
compensation
Dir r → rotation CW
Dir L → rotation CCW
“Damper fully open“
VAV control with
DC 0/2…10 V
setpoint
compensation
Dir r → rotation CCW
Dir L → rotation CW
“Damper fully closed“
Setting
min
V

≤0 % and YC = 0 V drives the actuator to position “fully closed”
Operating mode “con”
Variable air volume
(VAV) control
Forced control in VAV
mode
Note