Multi-Pump Setup; Multi-Pump Function - Grundfos MAGNA3 Instructions Manual

ASSIST

Multi-pump setup

24 h
How to identify the master pump
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Multi-pump systems
24 h 24 h
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Check display to identify the master
=
24 h
pump in multi-pump systems.
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Master
Twin pump
=
24 h 24 h
Check name plate to identify the
= =
=
master pump on a twin pump.
Master
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Where to connect Input/output
=
relay
Master Slave
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Analog input
Digital input
Fieldbus
Master
module(CIM)*
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Home
Status Settings Assist
Setpoint Control mode
5.00 bar Const. pressure
Operaring mode Actual controlled value
Normal 4.90 bar
XXXXXXXXXXXXXXXXXXXXXXXX
P/N: XXXXXXXX IP XXX TF XXX I [A] P [W] MPa
1 1
S/N: XXXXXXXX
PC: XXXX EEI ≤ X.XX Part X Min. X.XX XXXX
Model: X Made in Germany Max. X.XX XXXX X.X
Grundfos Holding A/S, DK - 8850 Bjerringbro, Denmark
Configure on both
master and slave pump.
Connect and configure
on the master pump.
* If monitoring of the slave pump is desired,
a CIM must be mounted on the slave too.

Multi-pump function

Only one pump is operating at a time.
24 h
The change from one pump to the other
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Alternating
depends on time or energy. If a pump fails,
operation
the other pump will take over automatically.
24 h
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Back-up
operation
All pumps in operation will run at equal speed
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Cascade
and will cut in/out depending on system load.
operation
The Cascade function can be used in control
modes: constant curve and contant pressure.
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no
Pumps will run as
multi-pump
single pumps.
function
One pump is operating continuously.
The backup pump is operated at
24 h
intervals to prevent seizing up.
If the duty pump stops due to
a fault, the backup pump
will start automatically.
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