GEM 1435 ePos - Page 64

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17 System mode ADVANCED
SetP Function
NOTICE
Entering set value calibration points
▶ Set value calibration points can only be entered with 28: SetP Function = free.
Set value function
With this function, non-linear valve characteristics can be "linearised" and, with linear valve characteristics, any flow character-
istics can be reproduced.
Four valve characteristics are stored in the unit:
1. equal-percentage 1 : 25 (in CLOSED position valve remains 4% open)
2. equal-percentage 1 : 50 (in CLOSED position valve remains 2% open)
3. Linear
4. free
When free is selected at 30: a characteristic with 11 calibration points can be entered.
30: FREE 0%
.
.
.
40: FREE 100%
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
2
0
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
1:50
1:25
Linear and equal-percentage characteristics
Linear
Set value w [%]
Stroke x
[x]
At gaps of 10%, a flow 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.