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
33
4.6.2.4
Reset
time
The
reset
time
describes
the
I
‐
amount
of
the
controlling.
The
I
‐
amount
of
a
controlling
causes
an
integral
convergence
of
the
actual
value
to
the
setpoint.
A
short
reset
time
indicates
a
strong
I
‐
amount.
A
short
reset
time
causes
that
the
control
value
approaches
fast
to
the
control
value,
which
is
set
by
the
proportional
range.
A
big
reset
time
causes
a
slow
approach
to
this
value.
To
note
is,
that
a
reset
time,
which
is
adjusted
too
small,
can
cause
across
swinging.
In
principle
you
can
say
each
carrier
the
system,
each
bigger
the
reset
time.
The
following
setting
rules
can
be
defined:
small
reset
time:
fast
regulating
of
deviations;
usage
at
fast
systems
and
at
places
with
changing
environmental
conditions
(disturbance
variables
like
draft);
danger
of
swinging
across
big
reset
time:
slow
regulating
of
deviations;
almost
no
danger
for
swinging
across;
usage
at
slow
systems
as
underfloor
heating
4.6.2.5
Send
control
value
cyclic
The
parameter
“Send
control
value
cyclic”
causes
a
cyclic
sending
of
the
actual
control
value.
The
time
shifts
between
two
values
can
be
also
parameterized.
