Endress+Hauser Proline Prosonic Flow 93 - Rescaling the Input Value

PROline Prosonic Flow 93 PROFIBUS-DP/-PA 6 Commissioning
Endress+Hauser 95
6.3.3 Rescaling the input value
In the Analog Input function block, the input value or input range can be scaled in
accordance with the automation requirements.
Example:
 The system unit in the Transducer Block is m
3
/h.
 The measuring range of the sensor is 0...30 m
3
/h.
 The output range to the automation system should be 0 ... 100%.
 The measured value from the Transducer Block (input value) is rescaled linearly via
the input scaling PV_SCALE to the desired output range OUT_SCALE.
Parameter group PV_SCALE (see “Description of Device Functions” manual)
Parameter group OUT_SCALE (see “Description of Device Functions“ manual)
The result is that with an input value of, for example 15 m
3
/h, a value of 50% is output
via the OUT parameter.
Fig. 67: Scaling the input value for the Analog Input function block
!
Note!
The “OUT_UNIT” does not have any effect on the scaling. It should be set nevertheless
for clarity purposes.
PV_SCALE_MIN (V1H0)
0
PV_SCALE_MAX (V1H1)
30
OUT_SCALE_MIN (V1H3)
0
OUT_SCALE_MAX (V1H4)
100
OUT_UNIT (V1H5)
[%]
OUT
PV_SCALE OUT_SCALE
m/h
3
00
00
30
100
100
%
15 m /h
3
%
10050
0...30 m /h
3
50%
Transducer
Block
Volume
flow
Analog Input Function Block
F06-93PBxxxx-05-xx-xx-en-001