NM, NMS

EI: Pumps with frequency converter

The NM(4) EI pumps are available with power ranging from 0.37 kW to 37 kW. These pumps are equipped with the I-MAT system installed on board,

enabling the creation of an extremely compact and e

fficient variable-speed system.

This makes them ideal for water supply applications and the distribution of hot and cold water

Feature

s

• Energy saving

• Compact desig

• Easy to use

• Programmable to suit the system requirements

• Reliability

Construction

The system consists of:

• Pump

• Induction moto

• I-MAT Frequency converte

• Motor adapter for the motor mounting of the frequency converte

• Connection cable between frequency converter and induction motor

• Single pressure transducer for 2 poles and di

fferential transducer for 4 poles

Main feature

s

Rated motor power output from 0,37 kW to 37 kW.

Control range from 1750 to 2900 rpm (2-pole)

Control range 870÷1750 1/rpm (4-pole

)

Protection against dry running

Protection against operations with closed valve ports

Protection against system leakages

Protection against overcurrent in the motor

Protection agains overvoltage and undervoltage of the power suppl

Protection against current unbalances between phases

Operating mode

s

Constant pressure mod

e

with pressure transducer

In this mode, the system maintains the preset pressure regardless of changes in the

flow demand of the installation.

Proportional pressure mod

e

with pressure transduce

In this mode the system changes the working pressure according to the required

flow rate.

Constant

flow mode

with

flow meter

pressure

In this mode, the system maintains a constant

flow rate at a specific point in the installation, adjusted according to the required

Fixed speed mod

e

with setting of the speed preferential rotation

In this mode, by changing the working frequency, you may choose any operational curve included within the working range.

min

Constant temperature mod

e

with temperature transduce

In this mode the system keeps the temperature constant inside a system by changing the speed of the pump