Grundfos MAGNA3 Series User Manual

English (US)
16
5.5.2 Digital inputs
See fig. 15, pos. 2.
The digital input can be used for external control of start/stop or
forced max. or min. curve.
If no external on/off switch is connected, the jumper between
terminals Start/Stop (S/S) and frame ( ) should be maintained.
This connection is the factory setting.
Fig. 18 Digital input
External start/stop
The pump can be started or stopped via the digital input.
External forced max. or min. curve
The pump can be forced to operate on the max. or min. curve via
the digital input.
Select the function of the digital input on the pump control panel
or with Grundfos GO Remote.
TM05 3339 1212
Contact symbol Function
M
A
Max. curve
100 % speed
M
I
Min. curve
25 % speed
S/S Start/Stop
Frame connection
Start/stop
Normal duty
Note: Factory setting with
jumper between S/S and .
Stop
S/S
M
I
M
A
On/off timer
Start/stop
S/S
Q
H
S/S
Q
H
Max. curve
Normal duty
Max. curve
Min. curve
Normal duty
Min. curve
M
A
Q
H
M
A
Q
H
M
I
Q
H
M
I
Q
H

Grundfos MAGNA3 Series Specifications

General

Temperature Range	-10 °C to +110 °C
Insulation Class	F
Series	MAGNA3
Max. Liquid Temperature	110 °C
Power Supply	1x230V, 3x400V
Approvals	CE
Pump Housing	Cast iron
Installation	Inline
Communication	Modbus RTU, BACnet MS/TP
Ambient Temperature	0 °C to 40 °C
Material	Cast iron