User Manual

28/90
Building Technologies Integration von DESIGO™ RXC in VISONIK CM2Z8338en_01
Building Automation Integration functions 12.06.2006
3.2.10 Summer / winter compensation
All RXC applications
VISONIK BPS NIDES.RX RXC controller
DP.Parameter Function/Range NV name / element Function/Range
BT
User designation NV name NV element
@TCGm.DSPC →
nvoSetptShift
.occupied_cool
Occupied cooling
setpoint shift
→
1
Setpt Shift nviSetptShift occupied_cool
@TCGm.ISU / IWI
See diagram
→
nvoSetptShift
.occupied_heat
Occupied heating
setpoint shift
→
1
Setpt Shift nviSetptShift occupied_heat
Summer/winter compensation is a function in the group point (@TCG...). The resulting adjustment value @TCGm.DSPC is written to the cooling/heating setpoint shift as a function
of the parameters TCGm.ISU (=summer influence) and @TCGm.IWI (=winter influence).
IWI / ISU BSTP – Outdoor temp.
BPS TEC Master
DSPC
TEC . SPEH / C
. SPRH / C
TCR . SPEH / C
. SPRH / C
RX Master (CFE)
Setpt Shift Heat Setpt Shift Cool
Note The correction value DSPC is calculated in the system software of the
VISONIK BPS (TEC Master) from the differential represented by the
base temperature @TCGm.BSTP minus the outdoor temperature at
address @TCGm.SIDTO. The function is only enabled if SIDTO is
pointing to a valid value (e.g. SIDTO=#VIP1), and if only one of the
parameters IWI / ISU is a value other than zero. The function shifts the
setpoints SPCH / SPCC in the TEC points (see drawing) in accordance
with the value of DSPC . However, the room setpoints @TCRm.SPCH
and SPCC remain unchanged.
Caution The two functions “Room setpoint shift” and “Summer/winter
compensation” act on the same network variables and can, therefore,
influence each other.
Note An adjustment x of the heating setpoint @TEC.SPCH also causes the
the value of SetptShift occupied_cool to be written
x > 0 : occupied_cool = - x
x < 0 : occupied_cool = 0
This ensures that the effective cooling setpoint in the controller does not
change.
An adjustment x of the cooling setpoint @TEC.SPCC only results in the
value of SetptShift occupied_cool being written. The effective heating
setpoint in the controller is not changed.