Value Y1 Of Adc Scaling - Siemens MICROMASTER 440 Parameter Manual

Parameter Description
P0756 = 4, P0761 = 0
-10 V
Index:
P0757[0] : Analog input 1 (ADC 1)
P0757[1] : Analog input 2 (ADC 2)
Note:
The ADC-linear characteristic is described by 4 coordinates, based on a two-point equation:
y - P0758 P
=
x - P0757 P
For calculations the point-gradient form (offset and gradient) is more advantageous:
= ⋅ +
y m x y
0
The transformation between these two forms is given by:
−
P 0760 P
=
m
−
P 0759 P
For scaling of the input the value of y_max and x_min has to be determined. This is done by the following
equations:
P 0760
=
x
m in
= −
y x (
max max
Notice:
The value x2 of ADC scaling P0759 must be greater than the value x1 of ADC scaling P0757.
P0758[2]

Value y1 of ADC scaling

CStat: CUT
P-Group: TERMINAL
Sets value of Y1 in [%] as described in P0757 (ADC scaling)
Index:
P0758[0] : Analog input 1 (ADC 1)
P0758[1] : Analog input 2 (ADC 2)
Dependency:
Affects P2000 to P2003 (reference frequency, voltage, current or torque) depending on which setpoint is to
be generated.
90
%
100 %
4000 h
ASPmax
P0760
P0757
P0759
P0758
ASPmin
−
0760 P 0758
−
0759 P 0757
⋅
0758 P 0758 P 0759
=
y
0
0757
P 0759
⋅ − ⋅
P 0757 P 0758 P 0759
−
P 0760 P 0758
−
P 0760 P 0758
⋅
x )
min
−
P 0759 P 0757
Datatype: Float
Active: first confirm
V
x
10 V
100%
− ⋅
P 0757 P 0760
−
P 0757
y
y
max
P0760
y
2
P0758
y
1
y
0
m
x x
max
min
P0757 P0759
x x
1 2
Min:
Unit: % Def:
QuickComm.: No Max:
MICROMASTER 440
Issue 01/06
x
Level
-99999.9
2
0.0
99999.9
Parameter List
6SE6400-5BB00-0BP0