Grundfos magna3 User Manual

Functions
MAGNA3
4
29
Digital inputs
You can use the digital input for external control of start
or stop or forced maximum or minimum curve.
Note: If no external on and off switch is connected,
maintain the jumper between the Start/Stop (S/S) and
frame ( ) terminals. This connection is the factory
setting.
Fig. 39 Digital input in control box
External start or stop
You can start and stop the pump via the digital input.
External forced maximum or minimum curve
You can force the pump to operate on the maximum or
minimum curve via the digital input.
TM05 3343 1212
Contact symbol Function
M
A
Maximum curve
M
I
Minimum curve
S/S Start/Stop
Frame connection
Start/Stop
Normal duty
Stop
NC N0 C
S/S
M
I
M
A
S/S
Q
H
S/S
Q
H
Maximum curve
Normal duty
Maximum curve
Minimum curve
Normal duty
Minimum curve
M
A
Q
H
M
A
Q
H
Q
H
Q
H

Grundfos magna3 Specifications

General

Liquid Temperature Range	-10°C to +110°C
Max Operating Pressure	16 bar
Type	Circulator Pump
Series	MAGNA3
Operating Temperature Range	-10°C to +110°C
Ambient Temperature Range	0°C to +40°C
Protection Class	IPX4D
Power Supply	1 x 230 V, 3 x 230 V, 3 x 400 V
Control Mode	Constant pressure, Proportional pressure
Communication	Modbus RTU
Pump Housing	Cast Iron
Impeller	Composite
Enclosure Class	X4D
Approvals	CE, EAC
Connection	Flange
Weight	Varies depending on model
Power Consumption	Varies depending on model