Grundfos CUE Series Product Manual page 19

Functions
External setpoint with stop function
Setting via PC Tool.
The actual setpoint with stop is a linear function of the
external setpoint signal above 20% signal and on/off
operation below 20% signal. See fig. 19.
Actual
setpoint
Max.
Setpoint,
CUE menu
Min.
Stop
0 V 20%
0/4 mA
Fig. 19 External setpoint with stop function
When the external setpoint signal is below 10%, the
operating mode is Stop.
When the external setpoint signal is above 15%, the
operating mode is Normal.
External setpoint based on a reference table
Setting via PC Tool.
The actual setpoint is a piecewise linear function of the
external setpoint signal. See fig. 20.
Actual
setpoint
Max.
Setpoint,
CUE menu
Min.
0 V
0/4 mA
Fig. 20 External setpoint based on a reference table
10 V
20 mA
External setpoint signal
10 V
20 mA
External setpoint signal
The linear function is defined as an interpolation
between the points in a table. The table has of up to 8
points.
Predefined setpoints
Setting via PC Tool.
This function makes it possible to select up to seven
predefined setpoints using one to three digital inputs.
The setpoints are selected as a binary coding of the
digital inputs as shown in the table below.
Predefined
DI 2
setpoint
1 x
2
3 x
4
5 x
6
7 x
x = Closed contact
If none of the digital inputs are activated, the operating
mode can be configured to Stop or to being controlled
according to a setpoint set via the control panel.
If Min., Max. or Stop is selected via the control panel,
the predefined setpoints are overruled.
Note: Predefined setpoints cannot be influenced by the
external setpoint input.
GENIbus setpoint
If the CUE is remote-controlled via the GENIbus input,
the setpoint is set via the bus.
Note: The GENIbus setpoint cannot be influenced by
the external setpoint signal.
Grundfos CUE
DI 3 DI 4
x
x
x
x
x x
x x
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