Available parameters for
constant duct pressure
Unit configuration BACnetobject R/RW Note
Duct pressure nominal PSuNom,
AVAL,119
RW Pa; Maximum duct pressure of the unit
Duct pressure minimum PDuctMin
AVAL,198
RW Pa
Minimum fan speed FanSpdMinRel
AVAL,201
%
Fan speed feedback fault
limit
FanSpdFbFltLm
AVAL,197
RW %
Allowed tolerance time fan
speed feedback fault supply
fan= startup delay time
step7
TiSttUpSpdVnt
PINTVAl,104
RW Tolerance time= TiSttUpSpdVnt–
5sec, maximal60sec
Allowed tolerance time fan
speed feedback fault exhaust
fan= startup delay time
step6
DlyOnAflEhSta
PINTVAL,129
RW Tolerance time= DlyOnAflEhSta–
5sec, max.60sec
Selection of active sensor PSenCnf
MVAL,150
1 = Both sensors (default)
2 = P4 supply air
3 = P5 exhaust air
Ramp up / down time of fans TiRmpFanSuSpd
PINTVAL,98
RW s
5.5.3.1 Available parameters for the supply fan (constant duct
pressure)
Available parameters for
supply fan
Current state BACnet object R/RW Unit/Note
Present pressure setpoint
supply
SpPSu
AVAL,193
R Pa
Present pressure supply PSu
AVAL,460 (POS9)
AVAL,459 (QBM)
R Pa
Supply fan speed
Prio 2: Fire / Smoke
Prio 5: Protection
FanSuSpd
A1: AO,102
A2: AO,111
A3: AO,120
A4: AO,129
Modbus: AO,149
RW %
Supply fan speed feedback FanSuSpdFb
Tacho:AI,65
0~10V:AI,96
Modbus: AI,163
R %
Exhaust fan fault FanEhFlt
Modbus: BI,144
R
Present flow supply AirFlSu
AVAL,204
R m3/h, available, if DiffPFanSu is
configured
Supply fan pressure diff. DiffPFanSu
AVAL,17 (POS9)
AVAL,459 (QBM)
R Pa, available, if DiffPFanSu is
configured
Application functionalities
Fan speed control
5
70 | 170 A6V10733786_en_c