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Grundfos MGE Serie Montage- Und Betriebsanleitung Seite 49

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  • DEUTSCH, seite 72
Pos.
Description
X:
External input signal from 0 to 100 %
Y:
Setpoint influence from 0 to 100 %
X1:
Actual input signal, 60 %
Y1:
Sensor maximum [bar]
Y2:
Setpoint [bar]
Y3:
Actual setpoint [bar]
Y4:
Sensor minimum [bar]
Example of a constant curve with linear influence function
Actual setpoint: actual input signal x (setpoint - user-set minimum speed) + user-set minimum speed.
At a user-set minimum speed of 25 %, a setpoint of 85 % and an external setpoint of 60 %, the actual setpoint is 0.60 x (85 - 25) + 25 = 61 %.
Y
100
Y1
85
Y2
Y3
61
25
Y4
0
0
X1
0.5
0
0
0
4
-50
Pos.
Description
X:
External input signal from 0 to 100 %
Y:
Setpoint influence from 0 to 100 %
X1:
Actual input signal, 60 %
Y1:
Y1: Fixed maximum speed in percentage
Y2:
Y2: Setpoint speed in percentage
Y3:
Y3: Actual setpoint speed in percentage
Y4:
Y4: User-set minimum speed in percentage
6.14.1 "Setpoint influence" functions
6.14.1.1 "Linear function"
The setpoint is influenced linearly from 0 to 100 %.
Y
100
0
0
0.5
0
0
0
4
-50
Pos.
Description
X:
External input signal from 0 to 100 %
Y:
Setpoint influence from 0 to 100 %
X
100 %
3.5 V
5 V
10 V
20 mA
20 mA
204 °C
100 %
X
3.5 V
5 V
10 V
20 mA
20 mA
204°C
49

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