Siemens FIDAMAT 6, Руководство по эксплуатации, Страница: 108 / 202

Functions
8.6 Configuration
FIDAMAT 6
106
Operating Instructions, 01/2019, A5E00222135-04
8.6.2 Analog output (function 70)
Figure 8-41 Configuring the analog output
You configure the analog output with this function.
With softkey 1 you define the lower value of the measuring range. The following settings
(see also table "Configurations of the analog output") are possible:
● 0 – 20 mA
● 2 – 20 mA
● 4 – 20 mA
● NAMUR/4 – 20 mA (with limiting at 3.8 mA).
You invert the analog output with softkey 2: e.g. 0 to 100 ppm THC ≡ 0 to 20 mA or 0 to
100 ppm THC ≡ 20 to 0 mA.
You suppress negative measured values with softkey 3. If negative values have an
unfavorable effect on further processing, the negative measured values at the analog output
can be limited to 0 (or 2/ 4/ 3.8 (NAMUR)) mA when this function is activated. The display
continues to show the actual measured value.
Table 8- 4 Configurations of the analog output
Defined analog
output / mA
Measuring range limiting in normal
operation
Measuring range limiting in case of
fault / CTRL
Start-of-scale
value / mA
Full-scale value /
mA
Start-of-scale
value / mA
Full-scale value /
mA
0 – 20 -1 21 0 21
2 – 20 1 21 2 21
4 – 20 2 21 4 21
4 – 20 (NAMUR) 3.8 20.5 3 21.5