Priority Of Settings - Grundfos MAGNA3 Installation And Operating Instructions Manual

The selection of sensor type (0-10 V or 4-20 mA) can be changed
on the pump control panel or with the Grundfos GO Remote.
24V 24V
Vcc Vcc
sensor sensor
Fig. 15 Analog input for external sensor, 0-10 V
24V
Vcc
sensor
Fig. 16 Analog input for external sensor, 4-20 mA
24V IN
Vcc Signal
Fig. 17 Examples of external sensors
24V
Fig. 18 Examples of external signal for the control via
BMS/PLC
N N
signal signal
N
I
signal
BMS
PLC

5.6 Priority of settings

The external forced-control signals will influence the settings
available on the pump control panel or with the Grundfos GO
Remote. However, the pump can always be set to max. curve
duty or to stop on the pump control panel or with the Grundfos
GO Remote.
If two or more functions are enabled at the same time, the pump
will operate according to the setting with the highest priority.
The priority of the settings is as shown in the table below.
Example: If the pump has been forced to stop via an external
signal, the pump control panel or the Grundfos GO Remote can
only set the pump to max. curve.
Possible settings
Pump control
Priority
panel or
Grundfos GO
Remote
1 Stop
2 Max. curve
3
4
5
6
7
8
9 Min. curve
10
11 Start
As illustrated in the table, the pump does not react to external
signals (max. curve and min. curve) when it is controlled via bus.
For further details, please contact Grundfos.
External
Bus signal
signals
Stop
Stop
Max. curve
Min. curve
Start
Max. curve
Min. curve
17