Grundfos E-pumps

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Grundfos E-pumps
E-pumps in parallel
Duty/standby function for three-phase
CRE pumps
The "Duty/standby" function enables duty/standby
operation of two CRE pumps connected in parallel and
controlled via GENIbus.
This means the following:
• Only one pump is operating at a time.
• If a fault occurs in the operating pump, the idle
pump (in standby) automatically starts up and a fault
indication appears in the pump which was in
operation.
• The two pumps run alternately for 24 operating
hours.
• As the two pumps never operate at the same time,
both pump type, pump size and operating mode
may differ.
The two pumps are connected by means of the
GENIbus interface. The function must be enabled with
the R100. See page 35.
GENIbus
Fig. 63 Pumps connected via GENIbus interface
CRE pumps running duty/standby in this way cannot
use the GENIbus interface for remote communication.
TM03 0414 5004
E-pumps controlled by external
controllers
E-pumps can be connected to control systems in the
following two ways:
E-pumps connected to Control MPC
E-pumps can be connected directly to the Grundfos
Control MPC.
Control MPC incorporates among other things a
CU 351 controller that can control up to six pumps.
The CU 351 incorporates features such as:
Start-up wizard
Correct installation and commissioning is a
prerequisite for attaining optimum performance of the
system and trouble-free operation year in and year out.
During commissioning of the system, a start-up wizard
is shown on the display of the CU 351. The wizard will
guide the operator through the various steps via a
series of dialogue boxes to ensure that all settings are
done in the correct sequence.
Application-optimized software
The CU 351 incorporates application-optimized
software which helps you set up your system to the
application in question.
Furthermore, navigating through the menus of the
controller is done in a user-friendly way. You do not
need any training to be able to set and monitor the
system.
Ethernet connection
The CU 351 incorporates an Ethernet connection
which makes it possible to get full and unlimited
access to the setting and monitoring of the system via
a remote PC.
Service port (GENI TTL)
The service port of the CU 351 enables easy access to
updating software and data logging in service
situations.
External communication
Control MPC enables communication with other
fieldbus protocols. In order to communicate with other
fieldbus protocols, a GENIbus module and a gateway
are required.
Control MPC can communicate with Profibus,
Interbus-S, radio/modem/PLC via G100 gateway and
LON bus via G10 LON gateway.
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