Moniteur 50 Series SMART Positioners - Manual (Page 78)

Operation
4-16
Positioner SIPART PS2/SIPART PS2 PA
C79000-G7476-C150–01
Setpoint turning points (see Fig. 4-9)
Each setpoint turning point can be assigned a flow characteristic value
at intervals of 5%. These points produce a polygon consisting of 20
straight lines which results in an image of the valve characteristic
curve.
Setpoint turning points can only be entered when 8.SFCT = FrEE.
0 10 20 30 40 50 60 70 80 90 100 %
0 10 20 30 40 50 60 70 80 90
0
0
10
10
20
20
30
30
40
40
50
50
60
60
70 70
80
80
90
90
100
100
100 %
SP
w
YA = 12 %
YE = 96 %
8.SFCT = 1:50
8.SFCT = lin
8.SFCT = 1:25
33.YNRM =
MPoS 33.YNRM =
FLoW
[%] [%]
SL0 SL2 SL4 SL6 SL8 SL10 SL12 SL14 SL16 SL18 SL20
12 22,5 33 43,5 54 64,5 75 85,5 96 %
w
MPoS
FLoW
8. SFCT = n1:25
Fig. 4-9 Setpoint characteristics, normalization of the manipulated variables and tight closing function
09.SL0 to 29.SL20