Brochure

Installation
MAGNA3
7
17
Analog input for external sensor
The analog input can be used for the connection of an
external sensor for measuring temperature, pressure,
flow or other parameter.
The analog input can also be used for an external
signal for the control from a BMS system or similar
control system.
The electrical signal for the input can be 0-10 VDC or
4-20 mA.
The selection of electrical signal (0-10 V or 4-20 mA)
can be changed on the control panel or with the
Grundfos GO Remote.
Fig. 15 Analog input for external sensor or control
In order to optimize the pump performance, external
sensors can advantageously be used in the following
cases:
Fig. 16 Wiring, analog input
Fig. 17 Examples of external sensors
For further details, see section Guide to performance
curves, page 40.
Fig. 18 Example of external signal for the control via BMS
or PLC
TM05 3221 1112
Function/control mode Sensor type
Heat energy meter Temperature sensor
Constant temperature Temperature sensor (external)
Constant pressure remote Pressure sensor (external)
TM06 0882 1114
PIN Description Load
IN Analog input
150 Ω (4-20 mA signal)
78k Ω (0-10 V signal)
24 V 24 V supply to external sensor Max. 22 mA
Ground for external sensor
signal
sensor
Vcc
24V
I N
-+
Sensor
Sensor
TM05 2947 1212
Pos. Sensor type
1
Differential pressure transmitter,
Grundfos type DPI V.2
1/2" connection and 4-20 mA signal.
2
Relative pressure transmitter,
combined pressure and temperature sensor, Grundfos
type RPI/T G 1/2" connection and 4-20 mA signal.
TM05 2888 0612
24V IN
Vcc
Signal
1
2
24V
BMS
PLC