ABB i-bus KNX Product Manual page 14

Designation
current set value in comfort
mode
cycl. sending of the current
set value
Values
Send actual value
(heating < > cooling)
Send mean value betw.
heating and cooling
not cyclical, only with a
change
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
Feedback of the current set
value via the bus:
the set value to which the
temperature is to be
controlled should always
be sent (= c urrelnt stt
H U
value ) .
U H
Example with b asic stt
H
value 21°C and
D ead zone
H H U
2K:
With heating, 21°C is sent,
and with cooling, the basic
set value + dead zone is
sent (21°C + 2K = 23°C)
In the comfort operating in
heating mode and in
cooling mode, the same
value is sent, namely basic
set value + half dead zone,
so that room users are not
irritated where appropriate.
Example with b asic set
H
value 21°C and deadzone
H
2K:
Mean value = 21°+1K
=22°C
The regulated value is
21°C or 23°C
How often is the current
valid set value to be sent?
only send with a change.
send cyclically
U H
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