Brochure

Product range
MAGNA3
3
8
Control modes
•AUTO
ADAPT
(factory setting): Is suitable for most
installations. Auto adapt is proportional pressure
control where the pump sets and adapts its own set
point based on maximum system conditions.
•FLOW
ADAPT
, FLOW
LIMIT
: in systems where a flow
limitation is required.
• Proportional pressure control in systems with
considerable pressure loss variation in relation to
large flow variations; i.e. if more than 50 % of
pressure loss is due to friction loss in the pipe
system.
• Constant pressure control in systems with
insignificant pressure loss variation in relation to
large flow variations; i.e. if less than 50 % of
pressure loss is due to friction loss in the pipe
system
• Constant temperature control in heating systems
with a fixed system characteristic, for example
domestic hot water systems.
• Constant curve duty.
Determination of precise setpoint
To determine precise setpoint for proportional pressure
control, consult WebCAPS (www.grundfos.us/
WebCAPS). See fig. 6.
The desired proportional pressure setpoint can be
determined by selecting the duty point on the pump
curve. In the upper right hand corner, the setpoint can
be read.
In order to see the setpoint, in CAPS on the product
detail page, select:
Options>Curve settings>Curve types>Check local
control>Proportional pressure.
Fig. 6 Grundfos WebCAPS tool
Communication
The Grundfos CIM modules (CIM = Communication
Interface Module) enable the MAGNA3 to connect to
standard fieldbus networks, offering substantial
benefits:
• complete process control and monitoring
• modular design, prepared for future requirements
• based on standard functional profiles
• simple configuration and easy installation
• open communication standards
• reading warning and alarm indications.
For further details, see section CIM modules on
page 37.
Fig. 7 Example of typical building management system
(BMS)
Note: A gateway is a device that facilitates the transfer
of data between two different networks based on
different communication protocols.
TM05 8778 2713
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TM05 2710 1112