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Siemens
A6V10631832_en--_b
Building Technologies
2016-01-29
Settings and operating mode
Parameterization
The OEM generally provides the basic configuration to VAV compact controllers, especially
the parameter Vn and the opening direction. The setting of all other parameters depends on
the actual application and can be obtained from the ventilation planner or similar.
The following parameters must be checked or set prior to commissioning:
Parameter
Range
Description
Factory setting
Operating
mode
VAV (flow ctrl.) /
POS (position ctrl.)
Interpretation of setpoint
VAV = setpoint commands volume flow [%]
POS = setpoint commands damper position [%]
VAV
Opening
direction
CW (R) / CCW (L) Opening direction of air damper
CW (R)
Adaptive
positioning
Off / On
Adaption of actual opening range to position feedback
Off = No adaption / mapping 0°..90°
0..100 %
On = Pos. adaption / mapping e.g. 0°..60°
0..100 %
Off
Vmax
20…120%
Maximum air volume flow
100 %
Vmin
-20…100%
Minimum air volume flow
0 %
Vnom
0…60‘000 m
3
/h
Nominal air volume flow
2)
100 m
3
/h
Vn
1…3.16
Characteristic value for the air volume flow; set by the
manufacturer (OEM)
1
Altitude
0…5000m
in 500m steps
Altitude level correction factor for differential pressure
sensor (select n*500m value closest to real altitude)
500 meters
Please refer to technical basics
A6V10631862
for more explanation.
2)
Value used for displaying / not used for volume flow control loop
Variable air volume (VAV) control
The operating point is determined by the setpoint value and the Vmin / Vmax settings.
1 Setpoint range
2 Actual value range
3 Controlled area
Constant air volume (CAV) control
A constant air volume flow can be achieved by sending a constant setpoint value.
Position control
The VAV compact controllers can be operated as damper actuators, i.e. using the 0..100%
setpoint as position damper setpoint, by setting the operating mode parameter to “POS”.
Vmax [%]
Vmin [%]
3
