Gemu 1435 ePos - Page 34

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1435 e Pos
Stroke x
Set value
w
Set value range
Positioner 1 Positioner 2
Set value range
Important:
The diff erence between the SPLIT START and SPLIT END values must be > 10 %.
Setp Functn:
Set value function
With this function non-linear valve characteristics can be linearised and with linear valve characteristics any fl ow characteristics
can be reproduced.
Four valve characteristics are stored in the unit:
equal-percentage 1 : 25 (in CLOSED position valve remains 4 % open)
equal-percentage 1 : 50 (in CLOSED position valve remains 2 % open)
linear
free
When free is selected a characteristic with 11 calibration points can be entered.
30: FREE 0 %
.
.
.
40: FREE 100 %
At gaps of 10 % a fl ow characteristic value can be allocated to the set value calibration point concerned. These points make a
traverse with 10 straight lines, which then provides a pattern of the valve characteristic.
Entering the set value calibration points is only possible at SETP FUNCTN = free.
Lineare u. gleichprozentige Kennlinien
2,0
3,0
4,4
6,5
9,6
14,1
20,9
30,9
45,7
67,6
100,0
4,0
5,5
7,6
10,5
14,5
20,0
27,6
38,1
52,5
72,5
100,0
0
10
20
30
40
50
60
70
80
90
100
0,0
20,0
40,0
60,0
80,0
100,0
120,0
0 20 40 60 80 100 120
Sollwert w [%]
Hub x [%]
1:50
1:25
linear
Stroke x [%] Linear and Equal-Percentage characteristic control curves
Linear
Set value w [%]