Phoenix Contact MCR-SL-D-U/I Bedienungsanleitung Seite 12

8. Examples:
8.1 Temperature measurement
A temperature sensor with linear characteristic (non-
linear sensors, e.g. thermocouples have to be lineari-
sed) supplys 0 V at -10 °C and 10 V at 80 °C. 0..10 V
is chosen as input range.
Assign -10 as „displayed value at min. input signal" to
the lo west input level (0 V) and 80 as „displayed value
at max. input signal" (10V). The device is now tuned to
the sensor, measurement values and their correspon-
ding display values in bet ween are calculated.
Displayed value can be freely
adjusted to the input value
inside the display range.
8.2 Level measurement
A level sensor with linear characteristic (non-linear
sen sors ha ve to be li nea ri sed) supplys 19 mA at full
tank and 5 mA at empty tank. If the tank is filled up,
10 m3 should be displayed and if the tank is empty 0
m3 should be displayed.
4..20 mA is chosen as input range.
Assign 0 as „displayed value at min. input signal" to
the lo west input level (5 mA)
and 10 as „displayed value at max. input signal" (19
mA). The device is now tu ned to the sensor, measure-
ment values and their cor re spon ding display values in
bet ween are cal cu la ted.
8.3 Drawn quantity
Instead of the level, the drawn quantity should be dis-
played.
Again 4..20 mA is chosen as input range. Assign 10
as „displayed value at min.
input signal" to the lo west input level (5 mA) and 0 as
„displayed value at max. input signal" (19 mA).
12
8.4 Level measurement with limitated
display range
A third example is level measurement with limited
display range, that means a tank with 10 m3 have to
be filled up at best to 8 m3 and its the level should
not decrease below 1 m3. At values > 8 m3 the dis -
play shows „hi" and at values < 1 m3 the display
shows „lo".
4..20 mA is chosen as input range.
Assign 0 as „displayed value at min. input signal" to
the lo west input level and 10 as „displayed va lue at
max. input signal"to the highest input level.
Additionally at menu title „min. input signal" the
value which cor re sponds to the 1 m3 level, e.g. 5.6
mA is pro gram med. Do the same with the va lue
which cor re sponds to the 8 m3 level, e.g. 16.8 mA.
At input levels > 16.8 mA „hi" will be displayed and at
input levels < 5.6 mA „lo".
Max. input vol-
tage or max.
input current
can be shifted
inside the
input voltage
range or the
input current
range
Displayed value can be freely
adjusted to the input value
inside the display range.
Min. input voltage
or min. input cur-
rent can be shif-
ted inside the
input voltage
range or the
input current
range