Fan Coil Actuator FCA 2
Updated: Feb-16 (subject to changes) Page
45
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Continuation:
Designation
Values
Meaning
U
ser
-de
fi
ne
d par
am
et
er
s
Proportional band of the
cooling control
pure P controller
Only proportional
controllers.
See appendix: temperature
control
1 K, 1.5 K, 2 K
2.5 K, 3 K, 3.5 K
4 K, 4.5 K, 5 K
5.5 K, 6 K, 6.5 K
7 K, 7.5 K, 8 K
8.5 K
Professional setting for
adapting control response
to the room.
Large values cause finer
changes to the actuating
value with the same
control deviation and more
precise control than
smaller values.
Standard value: 4 K
Integrated time of the cooling
control
pure P controller
Only proportional
controllers.
See appendix: temperature
control
15 min, 30 min, 45 min, 60
min, 75 min, 90 min
105 min, 120 min
135 min, 150 min
165 min, 180 min
195 min, 210 min
225 min
Only for PI controller:
The integrated time
determines the response
time of the control.
This times can be adapted
to suit particular
circumstances.
If the cooling system is
over-dimensioned and
therefore too fast, shorter
values should be used. On
the other side, longer
integration times are
beneficial for a slightly
undersized cooling (slow).
Standard value: 90 min
Changeover between heating and
cooling
automatic
FCA 2 automatically
switches to cooling mode
if the actual temperature is
above the setpoint.
via object
The cooling mode can only
be activated on the bus
side
