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ABB i-bus KNX Product Manual page 19

Fan coil/systemised building technology
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3.4.5
A ctual value
3 1 B
Designation
What actual value to use
or
function of the external
sensor*
Comparison value for
internal sensor
In 1/10 K (-64 .. 63)
Designation
Send the actual value
or
send the external actual
value*
Cycl. sending of the actual
value
or
Cycl. sending of the
external actual value*
Values
of the internal sensor
manual input –64 ... 63
Default value = 0
Values
not with a change
with a change of 0.2 K
with a change of 0.3 K
with a change of 0.5 K
with a change of 0.7 K
with a change of 1 K
with a change of 1.5 K
with a change of 2 K
do not send cyclically
every 2 mins., every 3
mins.
every 5 mins., every 10
mins.
every 15 mins., every 20
mins.
every 30 mins., every 45
mins.
every 60 mins.
Meaning
The room temperature is
measured in the device.
Positive or negative
correction of the measured
temperature in 1/10K
increments.
Examples: a) RTF/A 1.1
sends 20.3°C.
A calibrated thermometer
is used to measure a room
temperature of 21.0°C. To
raise the temperature of
the RTF/A 1.1 to 21 °C, "7"
(i.e. 7 x 0.1K) must be
entered.
b) RTF/A 1.1 sends
21.3°C. The measurement
is 20.5°C. To lower the
temperature of the RTF/A
1.1 to 20.5 °C, "-8" (i.e. -8 x
0.1K) must be entered.
Meaning
Is the current room
temperature to be sent?
If it is, from what minimum
change is it to be sent
again?
This setting is used to keep
the bus load as low as
possible.
How often is the actual
value to be sent regardless
of the temperature
changes?
19

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