Operation 4-8 – Moniteur 50 Series SMART Positioners User Manual
Page 70
Operation
4-8
Positioner SIPART PS2/SIPART PS2 PA
C79000-G7476-C150–01
Setpoint turning points (see Fig. 4-6)
Each setpoint turning point can be assigned a flow characteristic value
at intervals of 10%. These points produce a polygon consisting of 10
straight lines which results in an image of the valve characteristic
curve.
Setpoint turning points can only be entered when 10.SFCT = FrEE.
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 %
4
6
8
10
12
14
16
18
20 mA
Jw
w
0.5 % 1.5 %
YA = 12 %
YE = 96 %
10.SFCT = 1:50
10.SFCT = lin
10.SFCT = 1:25
10.SFCT = FrEE
e.g. 1:25 inverse
only if 26.YCLS = dW
only if 26.YCLS = uP
25.YNRM =
MPoS
25.YNRM =
FLoW
[%]
[%]
99.5 %
98.5 %
SL0
SL1
SL2
SL3
SL4
SL5
SL6
SL7
SL8
SL9
SL10
12
22,5
33
43,5
54
64,5
75
85,5
96 %
w
MPoS
FLoW
Fig. 4-6
Setpoint characteristics, normalization of the manipulated variables and tight closing function
11.SL0 to 21.SL10