Grundfos MAGNA3 D 32-80 180 97924451 [22/1656] Digital inputs
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Grundfos MAGNA3 D 32-80 180 97924451 [22/1656] Digital inputs

Grundfos MAGNA3 D 32-80 180 97924451 [22/1656] Digital inputs
English (GB)
22
Fig. 27 Relay output
The functions of the signal relays appear from the table below:
Factory settings of relays:
7.4.2 Digital inputs
See fig. 25, pos. 2.
You can use the digital input for external control of start-stop or
forced maximum or minimum curve.
If no external on-off switch is connected, the jumper between
terminals start-stop (S/S) and frame ( ) must be maintained. This
connection is the factory setting.
Fig. 28 Digital input
External start-stop
You can start and stop the pump via the digital input.
TM05 3338 1212
Contact symbol Function
NC Normally closed
NO Normally open
CCommon
Signal relay Alarm signal
Not activated:
• The power supply has been switched off.
• The pump has not registered a fault.
Activated:
• The pump has registered a fault.
Signal relay Ready signal
Not activated:
• The pump has registered a fault and is
unable to run.
• The power supply has been switched off.
Activated:
• The pump has been set to stop, but is ready
to run.
• The pump is running.
Signal relay Operating signal
Not activated:
• The power supply has been switched off.
Activated:
• The pump is running.
Relay Function
1 Operating signal
2 Alarm signal
NC NO C NC NO C
Operation
Alarm
Relay 1 Relay 2
132
NC NO C
132
NC NO C
12 3
NC NO C
132
NC NO C
132
NC NO C
12 3
NC NO C
132
NC NO C
132
NC NO C
12 3
NC NO C
TM05 3339 1212
Contact symbol Function
M
A
Maximum curve
100 % speed
M
I
Minimum curve
S/S Start-stop
Frame connection
Start-stop
Normal duty
Factory setting with jumper
between start-stop and .
Stop
S/S
M
I
M
A
On-off timer
Start-stop
S/S
Q
H
S/S

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