Menu Inputs
18
In the next step the name (designator)
Buffer, bottom
is to be assigned to the input 4. To do so, su-
perset “designator groups” were specified such as
General, Generator, Consumer, Line, Climate
and
others.
General
is a group which had to be taken over from old operating systems (< A1.21). Many
names out of it are represented also in the other groups.
T.buffer bott
is put down in the group
Con-
sumer
.
When selecting the "designator“, the computer suggests different texts with sequential index up to 9
by scrolling forward. T.buffer bott2). Instead of the “0” the index is faded out (e.g.: T.Buffer.C). In
order to proceed quickly from one designator to the next, the key (x10) must be pressed at the same
time. According to our example we select
T.Buffer.L.
Indication example:
TYPE:
ANALG.
MEAS.VAR: Temp.
DESIGNATOR
GROUP: Consumer
DES: T.buffer bott
SENSOR:
Pt 1000
SENSOR CHECK: no
SENSOR CORR: 0.0 K
AVERAGE: 1.0 sec
Under "
SENSOR
“ the sensor type has to be specified. Possible selections are:
RAS
(KTY) or RASPT
(Pt1000) for the ambient temperature sensor,
Pt 1000
for the standard temperature sensor and
KTY
10
.
If a short circuit and/or interruption occur, an active "
SENSOR CHECK
" issues
automatically
en error
message in the
function overview
.
If "
SENSORCHECK
" is active, the
sensor status
is also available: OFF for a correctly working sen-
sor and ON for a defective sensor (short circuit or circuit interruption). As the
sensor status
can also
be set as source of an input variable (see menu “Functions”), it is thereby possible to react according-
ly if e.g. the external sensor fails. The sensor status can optionally be selected for individual sensors
or for all sensors together ("sensor status 17").
If there is a “
SENSOR CORR
“ such as 0.5K and a measured temperature of 60.0°C, 60.5°C is indi-
cated. This corrected value is then used also internally for all calculations.
“
AVERAGE
“ means the temporal averaging of the measured values. Calculating a mean of 0.3 sec-
onds leads to an extremely rapid reaction of the display and the unit. However, this can be expected
to cause fluctuations of the value. A large mean slows everything down and is only recommended for
the sensors for the heat meter. For simple measurements, around 1 – 3- sec. should be selected, for
the provision of hygienic warm water with the ultra-speed sensor 0.3 – 0.5 sec.
