Analog Input Inp2 - Siemens RWF55.5 User Manual

Parameter Value/
selection
Function 0
1
FnC2
2
3
Sensor type 1
2
SEn2
Sensor type
3
4
5
6
-1999...
Correction of
measured value 0...
+9999
OFF2
Offset
Caution!
Measured value correction:
To make the calculation, the controller uses the corrected value (displayed value). This value does not
represent the value acquired at the point of measurement.
If the measured value correction function is used incorrectly (e.g., overcompensation of measured values
 measurement error only present temporarily), this may lead to undesirable plant states.
-1999...
Start of display
SCL2
0...
Scale low level +9999
-1999...
End of display
SCH2
100...
Scale high level +9999
0.0...
Filter time constant
dF2 2...
Digital filter 100.0...
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Building Technologies Division
Infrastructure & Cities Sector

8.2 Analog input InP2

This input can be used to specify an external setpoint or carry out setpoint shifting.
ConF  InP  InP2 
Description
No function
External setpoint (display SPE)
Setpoint shifting (display dSP)
Angular positioning feedback
0...20 mA
4...20 mA
0...10 V
0...5 V
1...5 V
Resistance teletransmitter
Using the measured value correction function (offset), a measured value can
be corrected by a certain amount, either up or down.
Example:
Measurement value
294.7
295.3
In the case of a measuring transducer with standard signal, the physical
signal is assigned a display value here.
Example: 0...20 mA = 0...1500 °C
The physical signal range can be undershot/exceeded by 20% without a
measuring range overshoot/undershoot signal being issued.
Is used to adapt the digital 2nd order input filter (time in s; 0 s = filter off).
If the input signal changes abruptly, about 26% of the change is captured
after a time corresponding to the filter time constant dF (2 x dF: approx. 59%;
5 x dF: approx. 96%).
If the filter time constant is large:
- High attenuation of interference signals
- Slow response of actual value display to changes in the actual value
- Low limit frequency (low-pass filter)
User Manual RWF55...
8 Configuration ConF
Offset Display value
+0.3 295.0
-0.3 295.0
CC1U7867en
05.11.2013