Data Sheet for Product

6
Siemens
CE1N3544en
Smart Infrastructure
2021-10-25
Commissioning and parametrization
Parametrizing the VAV application
The VAV compact controllers are parametrized via configuration tools, see Equipment com-
binations [▶ 2].
The VAV compact controllers are pre-configured by the OEM via the PPS2 interface (with
AST20 or ACS931). Some parameters can be changed during commissioning, operation, or
maintenance.
Parameter
Range
Description
Factory setting
Operating mode
CON (VAV operation) /
3P (pos. control) /
STP (step control)
Interpretation of setpoint
● CON = continuous setpoint for air volume flow [%]
● 3P = 3-position setpoint for damper position
● STP = Min-Mid-Max control for volume flow
CON / VAV mode
Opening direction
(DIR)
r / L
(CW / CCW)
Opening direction of air damper
r (CW)
Adaptive positioning
(ADP)
Off / On
Adaption of actual opening range to position feedback
0…100 %
● Off = No Adaption / 0…90° → 0…100 %
● On = Pos. adaption / mapping, e.g., 0…60° → 0…100 %
Off
Range YC signal
0…10 V / 2…10 V
Setpoint for air volume flow
0…10 V
(CON / VAV mode)
Range U signal
0…10 V / 2…10 V
Actual value, according to selected U
0…10 V
U signal
FLW / POS
Actual value (measured)
● FLW = Air volume flow [%]
● POS = Damper position [%]
FLW
Time constant U
0.05…5 s
Smoothing constant actual value U
1 s
Vnom
0…60,000 m
3
/h
Nominal air volume flow
100 m
3
/h
Vmin
-20…100 %
Minimum air volume flow
0 %
Vmid
0%…100 %
Mid air volume flow
(only for STP operating mode)
50 %
Vmax
20…120 %
Maximum air volume flow
100 %
Box coefficient
(Vn value)
1…3.16
Characteristic value for air volume flow at nominal differential
pressure; set by the VAV box manufacturer.
1.00
Elevation asl
0…5000m
in 500 m (100 m) increments
Altitude level correction factor for differential pressure sensor
500 m