Analog Input - Grundfos MAGNA3 Montage- Und Betriebsanleitung

External forced max. or min. curve
The pump can be forced to operate on the max. or min. curve via
the digital input.
Max. curve
M
H
A
M
H
A
Min. curve
M H
I
M H
I
Select the function of the digital input on the pump control panel
or with the Grundfos GO Remote.

4.5.3 Analog input

See fig. 10, pos. 3.
The analog input can be used for the connection of an external
sensor for measuring temperature, pressure, flow or other
parameter. See fig. 15.
It is possible to use sensor types with 0-10 V or 4-20 mA signal.
The analog input can also be used for an external signal for the
control from a BMS system or similar control system. See fig. 16.
• When the input is used for the heat energy meter, a
temperature sensor must be installed in the return pipe.
• If the pump is installed in the return pipe of the system, the
sensor must be installed in the flow pipe.
• If the constant-temperature control mode has been enabled
and the pump is installed in the flow pipe of the system, the
sensor must be installed in the return pipe.
• If the pump is installed in the return pipe of the system, the
built-in temperature sensor can be used.
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. 13 Analog input for external sensor, 0-10 V
24V
Vcc
sensor
Fig. 14 Analog input for external sensor, 4-20 mA
Normal duty
Q
Max. curve
Q
Normal duty
Q
Min. curve
Q
N
N
signal
signal
N
I
signal
24V N
Vcc
Signal
Fig. 15 Examples of external sensors
24V
Fig. 16 Examples of external signal for the control via
BMS/PLC
BMS
PLC
19