Grundfos CRE User Manual

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.
100
0
100 %
0
3.5 V
0.5
5 V
0
10 V
0
20 mA
0
20 mA
4
-50
204 C
A
B
TM064166
"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.
100
0
20
100 %
0
3.5 V
0.5
5 V
0
10 V
0
20 mA
0
20 mA
4
-50
204 C
A
B
C
D
TM064167
"Linear with Stop" and "Linear with Min."
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.
100
0
100 %
0
3.5 V
0.5
5 V
0
10 V0
20 mA
0
20 mA
4
-50 204 C
A
B
TM080914
"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.
100
0
80
0
0.5
0
0
0
4
-50
100 %
3.5 V
5 V
10 V
20 mA
20 mA
204 C
A
B
C
D
TM080915
"Inverse with Stop" and "Inverse with Min."
46
English (US)

Grundfos CRE Specifications

General

Protection Class	IP55
Material	Stainless Steel
Applications	Water supply, pressure boosting, irrigation
Impeller Material	Stainless Steel
Pump Housing Material	Stainless Steel
Connection Size	DN32 to DN200 (depending on model)
Power Supply	3-phase
Control	Integrated frequency converter