Grundfos CRE Installation And Operating Instructions Manual page 46

8.13.1 "Setpoint influence" functions
You can select these functions:
• "Not active".
When set to "Not active", the setpoint is not influenced from any
external function.
• "Linear function".
The setpoint is influenced linearly from 0 to 100 %. See the
figure below.
A
100
0
0
0.5
0
0
0
4
-50
"Linear function"
Pos. Description
A "Setpoint influence" [%]
B External input
• "Linear with Stop" and "Linear with Min."
- "Linear with Stop"
In the input signal range from 20 to 100 %, the setpoint is
influenced linearly.
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.
- "Linear with Min.".
In the input signal range from 20 to 100 %, the setpoint is
influenced linearly.
If the input signal is below 10 %, the pump changes to
operating mode "Min.".
If the input signal is increased above 15 %, the operating
mode is changed back to "Normal".
See the figure below.
A
100
0
0 20
0.5
0
0
0
4
-50
C
D
"Linear with Stop" and "Linear with Min."
46
B
100 %
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
Pos. Description
A "Setpoint influence" [%]
B External input
C "Normal"
D "Min." or "Stop"
• "Inverse function". The setpoint is influenced inversely from 0 to
100 %. See the figure below.
A
100
0
0
0.5
0
0
0
4
-50
"Inverse function"
Pos. Description
A "Setpoint influence" [%]
B External input
• "Inverse with Stop" and "Inverse with Min.".
- "Inverse with Stop"
In the input signal range from 0 to 80 %, the setpoint is
influenced inversely.
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.
- "Inverse with Min.".
In the input signal range from 0 to 80 %, the setpoint is
influenced inversely.
If the input signal is above 90 %, the pump changes to
operating mode "Min.".
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
"Inverse with Stop" and "Inverse with Min."
B
100 %
3.5 V
5 V
10 V
20 mA
20 mA
204 C
80 100 % B
3.5 V
5 V
10 V
20 mA
20 mA
204 C