Technical
Manual
Room
Temperature
Controller
SCN
‐
RT1
MDT technologies GmbH •
51766 Engelskirchen • Papiermühle 1
Tel.: +49-2263-880 • Fax: +49-2263-4588 • [email protected] • www.mdt.de
41
4.5.5
Direction
of
controller
The
following
settings
are
available
at
the
ETS
‐
Software:
Illustration
26:
Direction
of
controller
The
direction
of
the
controller
describes
the
behavior
of
the
control
value
by
a
changing
of
the
control
difference
at
rising
temperature.
The
control
value
can
react
normal
or
inverted
to
a
rising
temperature.
The
direction
of
the
controller
can
be
adjusted
for
all
control
values
(PI
‐
control
continuous,
PI
‐
control
switching
and
2
‐
Step
control).
An
inverted
control
value
is
for
adaption
to
normally
opened
valves
at
the
2
‐
Step
control
and
at
the
PI
‐
control
switching.
An
inverted
control
value
means
for
the
single
control
values,
by
controller
type
heating,
the
following
adjustments
PI
‐
control
continuous
The
control
value
falls
at
raising
regular
difference
and
rises
at
falling
regular
difference.
PI
‐
control
switching
The
ratio
between
duration
of
switching
on
to
the
whole
PWM
cycletime
raise
by
falling
temperature
and
falls
by
raising
temperature.
2
‐
Step
control
The
controller
switches
on
at
the
normal
point
for
switching
off
and
switches
off
at
the
normal
point
for
switching
on.
4.5.6
Additional
level
The
following
settings
are
available
at
the
ETS
‐
Software:
Illustration
27:
Additional
level