Technical
Manual
Temperature
Controller
SCN
‐
RT1
MDT technologies GmbH •
51766 Engelskirchen • Papiermühle 1
Tel.: +49-2263-880 • Fax: +49-2263-4588 • [email protected] • www.mdt.de
36
4.6.4
2
‐
step
control
(switching)
The
following
settings
are
available
at
the
ETS
‐
Software
(here
for
controller
type
heating):
Illustration
20:
2
‐
step
control
(switching)
The
following
chart
shows
the
dynamic
range
for
this
parameter:
ETS
‐
text
Dynamic
range
[default
value]
comment
Direction
of
controller
normal
inverted
indicates
the
controlling
behavior
at
rising
temperature
(4.5.5)
Hysteresis
0,5K
–
5,0K
[2,0K]
Setting
for
the
switching
off
point
and
the
switching
on
point
Use
additional
level
No
Yes
Activation
of
an
additional
level
possible,
only
for
heating
(4.5.6)
Chart
36:
2
‐
step
control
(switching)
The
2
‐
step
control
is
the
easiest
way
of
controlling.
The
controller
switches
the
control
value
only
on
and
off.
The
controller
switches
the
control
value
(for
example
at
heating)
on,
when
the
measured
temperature
falls
below
a
certain
temperature.
By
exceeding
a
certain
temperature,
the
control
value
will
be
switched
off
again.
The
points
for
switching
on
and
off
depend
to
the
current
adjusted
setpoint
and
the
adjusted
hysteresis.
The
2
‐
step
control
is
used
in
situations,
where
the
control
value
can
only
have
two
conditions
and
the
controlled
temperature
can
alternate
a
bit
more.
