Predefined Setpoints - Grundfos CRE Installation And Operating Instructions Manual

Pos. Description
A "Setpoint influence" [%]
B External input
C "Normal"
D "Min." or "Stop"
• "Influence table".
The setpoint is influenced by a curve made out of two to eight
points. There is a straight line between the points and a
horizontal line before the first point and after the last point.
A
100
0
0
0.5
0
0
0
4
-50
"Influence table" (example with five points)
Pos. Description
A "Setpoint influence" [%]
B External input
• "Influence table with Stop at Min.".
The setpoint is influenced by a curve made out of two to eight
points. There is straight line between the points and a horizontal
line before the first point and after the last point. If the input
signal is below 10 %, the pump changes to operating mode
"Stop". If the input signal is increased above 15 %, the operating
mode is changed back to "Normal". See the figure below.
A
100
0
20
0
0.5
0
0
0
4
-50
C
D
"Influence table with Stop at Min." (example with five points)
Pos. Description
A "Setpoint influence" [%]
B External input
C "Normal"
D "Min." or "Stop"
100 % B
3.5 V
5 V
10 V
20 mA
20 mA
204 C
B
100 %
3.5 V
5 V
10 V
20 mA
20 mA
204 C
• "Influence table with Stop at Max.".
The setpoint is influenced by a curve made out of two to eight
points. There is a straight line between the points and a
horizontal line before the first point and after the last point. If the
input signal is above 90 %, the pump changes to operating
mode "Stop". If the input signal is reduced below 85 %, the
operating mode is changed back to "Normal". See the figure
below.
A
100
0
0
0.5
0
0
0
4
-50
C
D
"Influence table with Stop at Max." (example with five points)
Pos. Description
A "Setpoint influence" [%]
B External input
C "Normal"
D "Min." or "Stop"
Factory setting
See the section on factory settings.
Related information
9.2 Factory settings

8.14 "Predefined setpoints"

Pump variant
CME
CRE, CRIE, CRNE, CRKE, SPKE, MTRE
You can set and activate seven predefined setpoints by combining
the input signals to digital inputs 2, 3 and 4. See the table below.
Set the digital inputs 2, 3 and 4 to "Predefined setpoints" if all seven
predefined setpoints are to be used. You can also set one or two of
the digital inputs to "Predefined setpoints" but this limits the number
of predefined setpoints available.
80 100 % B
3.5 V
5 V
10 V
20 mA
20 mA
204 C
"Predefined
setpoints"
●
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