Technical
Manual
Temperature
Controller
SCN
‐
RT1
MDT technologies GmbH •
51766 Engelskirchen • Papiermühle 1
Tel.: +49-2263-880 • Fax: +49-2263-4588 • knx@mdt.de • www.mdt.de
28
4.5.6
Dead
zone
The
following
settings
are
available
at
the
ETS
‐
Software:
Illustration
15:
Dead
zone
The
following
chart
shows
the
dynamic
range
for
this
parameter:
ETS
‐
text
Dynamic
range
[default
value]
comment
Dead
zone
between
heating
and
cooling
(K)
1,0K
–
10,0K
[2,0K]
Dynamic
range
for
the
dead
zone
(Range
at
which
the
controller
does
not
activate
cooling
or
heating)
Chart
31:
Dead
zone
The
settings
for
the
dead
zone
are
only
available,
when
the
controller
type
(have
a
look
at
4.4.1
controller
type)
was
set
as
heating
and
cooling.
Now
the
dead
zone
can
be
parameterized.
The
dead
zone
describes
the
range
at
which
the
controller
neither
heats
nor
cools.
So
the
controller
sends
no
value
to
the
control
value,
when
he
is
in
the
dead
zone.
At
the
setting
for
the
dead
zone,
it
is
to
note,
that
a
value
which
was
chosen
too
small
causes
many
switches
between
heating
and
cooling.
Whereas,
a
too
big
chosen
value
causes
a
wide
range
of
the
current
room
temperature.
When
the
controller
is
set
as
heating
and
cooling,
the
basic
comfort
setpoint
is
always
the
setpoint
for
heating.
The
setpoint
for
the
cooling
is
given
by
the
summation
of
basic
comfort
setpoint
and
dead
zone.
So,
when
the
basic
comfort
setpoint
is
set
to
21°C
and
the
dead
zone
is
set
to
3K,
the
setpoint
for
heating
is
21°C
and
the
setpoint
for
cooling
is
24°C.
