Grundfos MAGNA3 25-100 (N) Bedienungsanleitung

GRUNDFOS INSTRUCTIONS

MAGNA3

AUTOADAPT 6.5 m

Control mode

Home Status Settings Assist

Setpoint

Estimated flow rate Head

4.0 m

8 m3/h

MAGNA3

DISPLAY MENU

OVERVIEW

Valid from

model D

GB / DE

APPLICATION

WIZARD

INCLUDING

HOME

The home screen is

congured with the most

relevant settings (as shortcut)

and status parameters.

This screen can be customised

under general settings.

STATUS SETTINGS ASSIST

Operating status

»Operating mode, from

»Control mode

Pump performance

»Max. curve and duty point

»Resulting setpoint

»Liquid temperature

»Speed

»Operating hours

Power and energy consumption

»Power consumption

»Energy consumption

Warning and alarm

Heat energy monitor

Operating log

»Operating hours

»Trend data

Fitted modules

Date and time

Pump identication

Multipump system

»Operating status

»System performance

»Power and energy consumption

»Other pump 1, multipump sys.

Setpoint

Operating mode

»Normal

»Stop

»Min.

»Max.

Control mode

»AUTOADAPT

»FLOWADAPT

»Prop. pressure

»Const. pressure

»Const. temp.

»Di. temp.

»Constant ow rate

»Constant curve

Controller settings

FLOWLIMIT

Automatic Night Setback

Analog input

»Di. pressure control

»Constant temperature control

»Di. temperature control

»Heat energy monitor

»External setpoint inuence

Relay outputs

»Relay output 1

»Relay output 2

Bus communication

»Pump number

»Forced local mode

General settings

»Enable/disable settings

»Alarm and warning settings

»Delete history

»Dene Home display

»Display brightness

»Return to factory settings

»Run start-up guide

Application wizard

»Boiler pump

»Radiator

»Fan coil unit

»Air handling unit

»Underoor/ceiling

»Hot water

»Ground source

»Chiller pump

Setting of date and time

Multipump setup

Setup, analog input

Description, control mode

»AUTOADAPT

»FLOWADAPT

»Prop. press.

»Const. press.

»Const. temp.

»Dierential temp.

»Constant curve

Assisted fault advice

»Blocked pump

»Pump communication fault

»Internal fault

»Internal sensor fault

»Dry running

»Forced pumping

»Undervoltage

»Overvoltage

»High motor temperature

»External sensor fault

»High liquid temperature

»Comm. fault, twin-head pump

»This overview only includes

operation-relevant submenus.

Wizard

Alarms and warnings

SETTINGS

Status icons in display footer

Operating mode

= Automatic night setback

= Change of settings - locked

= Connected to eldbus

= Multipump system

= Master pump (multipump system)

= Slave pump (multipump system)

= Forced local mode (eldbus is overridden)

Normal

Stop

Min.

Max.

The pump runs according to the selected control

mode. Operating mode overrules control mode.

See next page

The pump stops.

Minimum curve mode is used in periods

in which a minimum ow is required.

Maximum curve mode is used in periods

in which a maximum ow is required.

Control mode 2

AUTOADAPT

Prop. press.

Const. press.

FLOWADAPT

Const. temp.

Di. temp.

Constant ow

Constant curve

Δt

Operating mode can be externally controlled by digital input. 1

Δt

Proportional pressure

Constant pressure

FLOWADAPT

Constant temperature

Dierential temperature

SETTINGS

Control mode 2

Recommended for most heating systems. During operation, the pump automatically

makes the necessary adjustment to the actual system characteristic.

The FLOWADAPT control mode combines a control mode and a function:

• The pump is running in AUTOADAPT.

• The delivered ow from the pump will never exceed a selected FLOWLIMIT.

The FLOWLIMIT function can

be activated in combination

with all of the below

control modes.

Used in systems with relatively large pressure losses in the distribution pipes.

The head of the pump will increase proportionally to the ow in the system to

compensate for the large pressure losses in the distribution pipes.

We recommend this control mode in systems with relatively small pressure losses.

The pump head is kept constant, independent of the ow in the system.

In heating systems with a xed system characteristic, for example domestic hot-water

systems, the control of the pump according to a constant return-pipe temperature is relevant.

Ensures a constant dierential temperature drop across heating and cooling systems.

The pump will maintain a constant dierential temperature between the pump and the external sensor.

Δt

Two-pipe

Make sure that the operating mode is set to ”Normal” in order for the pump to run according

to the available control modes. The table shows the dierent control modes along with

a recommended application type.

Δt

Constant curve The pump can be set to operate according to a constant curve, like an uncontrolled pump.

Set the desired speed in % of the maximum speed in the range from minimum to 100 %.

Δt

Constant ow The pump maintains a constant ow in the system, independently of the head.

No external sensor is required.

Two-pipe

One-pipe

Underoor

Hot water

Two-pipe

AUTOADAPT

Analog input

Building

Management

System/PLC

Building

Management

System/PLC

Function of analog input

Dierential pressure

Constant temperature

Constant curve

Constant pressure

Proportional pressure

External setpoint inuence

External sensor feedback

Example: Linear with min.

If the local setpoint is set at 4 m (100 % reference) and

the external signal input has a maximum value (10

V or 20 mA), the resulting setpoint will be 4 m. If the

signal input is reduced by 50 %, the resulting setpoint

changes accordingly in a linear manner.

From factory, the internal temperature

sensor is used for feedback.

Heat energy monitor

Di. temperature

Is automatically activated if an external

temperature sensor is installed.

This function can be used in the following control modes:

Controller settings (Kp and Ti)

From factory, the analog input function is tailored to a generic heating

system with a predened pipe length and sensor position in the system.

We recommend to use the wizard under “Assist" ”Setup, analog input”

if these predened settings are not applicable.

These operating modes are designed for the

connection of an external sensor:

Monitor the resulting setpoint under ”Status” ”Pump

performance”.

SETTINGS

The most commonly used

control mode for external

setpoint function.

Min.

Max.

1020

Signal input

Resulting setpoint

”Linear with min.” and ”Linear with stop”

The input signal range is between 0 and 100 % and is inuenced linearly. In ”Linear with stop”,

the pump stops if the input signal is below 10 %. If the input signal increases above 15 %, the

pump starts operating again. In ”Linear with min.”, the pump runs on the minimum curve

when the signal input is below 20 %.

The pump’s resulting setpoint will be a combination of two factors:

• The locally given setpoint, which is 100 % reference to the signal input.

• The external signal input (0-10 V or 4-20 mA).

MMMMM

»Boiler pump

»Shunt/buer

»’Primary only’ system

»Hot water»Hot water

»Charging pump

»Recirculation

»Fan coil unit »Radiator two-pipe

system »Radiator one-pipe

system »Underoor/ceiling

»Air handling unit

Assist

The application wizard in the Assist menu helps

you set the correct control mode.

Firstly, identify your pump in the application

overview below. Secondly, in the pump’s display,

choose the system that applies to the position of

your pump.

Example: Boiler pump

Choose “Boiler pump” in the application wizard

and press “OK”. Then select either “’Primary only’

system” or “Shunt/buer” depending on the posi-

tion of the pump. Press “OK”. Keep choosing the

characteristics corresponding to your system until

the setup is complete.

Application wizard

Heating and hot water systems

Assist

»Ground source

The application wizard in the Assist menu helps

you set the correct control mode.

Example: Ground source

Firstly, identify your pump in the application

overview to the left. Secondly, choose “Ground

source” in the application wizard and press “OK”.

Then select either “Ground loop” or ”Distribution

side” depending on the position of the pump.

Press “OK”. Keep choosing the characteristics

corresponding to your system until the setup is

complete.

Tip!

By using the pump’s internal sensor and installing

another temperature sensor on the return pipe,

you are able to measure the dierence between

the inlet and outlet temperatures; the Delta-T (ΔT).

Knowing Delta-T is especially useful in ground

source applications, as the pump performance can

be regulated to ensure a specic Delta-T value.

Ground source heat pump system

Application wizard

»Charging pump »Distribution side

»Ground loop

Cooling tower

Cooling source

»Fan coil unit

»Air handling unit

»Underoor/ceiling

»Primary/secondary system

»Primary pump

»Secondary pump

»’Primary only’ system

Assist

The application wizard in the Assist menu

helps you set the correct control mode.

Firstly, identify your pump in the application

overview below. Secondly, in the pump’s

display, choose the system that applies to the

position of your pump.

See examples on the previous pages.

Application wizard

Cooling systems

»Chiller pump

ASSIST

One pump is operating continuously.

The backup pump is operated at

intervals to prevent seizing up.

If the duty pump stops due to

a fault, the backup pump

will start automatically.

Congure on the master pump.

From model D: A sensor can also be installed on

the slave, but as long as the master is powered

up, the input on the slave will be ignored. If the

master loses power, the input of the slave will

take over.

* As a general rule, pumps older than model C must have a CIM mounted in both the

slave and master pump. However, pumps from model C supports newer versions of

CIMs, making it possible only to mount the CIM on the master pump. See installation

and operating instructions for MAGNA3 model D for a list of supported CIM versions.

Congure on both

master and slave pump.

Check the display to identify

the master pump.

Check the nameplate

or display to identify

the master pump. All pumps in operation will run at equal speed

and will cut in and out depending on system

load. Cascade operation can be used in constant

curve and constant pressure control modes.

Pumps will run as

single pumps.

Only one pump is operating at a time.

The change from one pump to the other

depends on time or energy. If one pump fails,

the other pump will take over automatically.

Multipump modes

How to congure input and output

How to identify the master pump Alternating

operation

Back-up

operation

Cascade

operation

multipump

function

Analog input

Digital input

Fieldbus

module (CIM)*

Relay output

Multipump setup

Multipump systems

Twin-head pump

Master

Slave

Setpoint

5.00 bar

Operaring mode

Normal

Actual controlled value

4.90 bar

Control mode

Const. pressure

Status Settings Assist

Home

XXXXXXXXXXXXXXXXXXXXXXXX

P/N: XXXXXXXX

S/N: XXXXXXXX

PC: XXXX

Model: X

IPXXX TF XXX

GrundfosHolding A/S, DK - 8850 Bjerringbro, Denmark

EEI ≤ X.XX Part X

Madein Germany

Min.

Max.

X.XX

X.X

XXXX

XXXXX.XX

I1[A] P1[W] MPa

24 h

Setpoint

5.00 bar

Operaring mode

Normal

Actual controlled value

4.90 bar

Control mode

Const. pressure

Status Settings Assist

Home

When operating in multipump mode, the operating mode,

control mode and setpoint are active on a system level,

meaning that the settings are the same on both pumps.

Changing settings or reading out multipump parameters is

only done on one of the pumps.

However, Grundfos Eye and relays are local

and show the status of each individual

pump (e.g. running, stopped and warning).

The heat energy parameters (ow, volume and

heat energy) are accumulated on system level.

Both pumps will display the same values.

The temperature sensor must only be installed

on the master pump.

In applications where the twin-head pump is

autonomously controlled by a 3rd party controller,

it is recommended to dissolve the factory enabled

multipump function.

When dissolving the multipump function, the inputs

and output must be congured on both pump heads.

The pump from which the multipump system is congured is

automatically assigned as master. In twin-head pumps, where

the multipump function is enabled from factory, the master is

identied on the nameplate. See ”How to identify the master

pump” in ”4. Multipump setup”.?

To change master, dissolve the multipump function via the Assist

menu on the pump display and reinitialise from the pump you

wish to assign master.

Heat energy monitor

Autonomous twin-head pump control

Selection of master pump

Multipump function

Operation

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