Grundfos Magna Benutzerhandbuch

GRUNDFOS MAGNA

Series 2000

GENI Module

Installation and operating instructions

Montage- und Betriebsanleitung

Notice d’installation et d’entretien

Istruzioni di installazione e funzionamento

Instrucciones de instalación y funcionamiento

√‰ËÁ›Â˜ ÂÁÎ·Ù¿ÛÙ·ÛË˜ Î·È ÏÂÈÙÔùÚÁ›·˜

Installatie- en bedieningsinstructies

Monterings- och driftsinstruktion

Asennus- ja käyttöohjeet

Monterings- og driftsinstruktion

GRUNDFOS INSTRUCTIONS

GRUNDFOS MAGNA

Series 2000

GENI Module

Installation and operating instructions Page 4

Montage- und Betriebsanleitung Seite 14

Notice d’installation et d’entretien Page 24

Istruzioni di installazione e funzionamento Pag. 34

Instrucciones de instalación y funcionamiento Pág. 44

√‰ËÁ›Â˜ ÂÁÎ·Ù¿ÛÙ·ÛË˜ Î·È ÏÂÈÙÔùÚÁ›·˜ ™ÂÏ›‰· 54

Installatie- en bedieningsinstructies Pag. 64

Monterings- och driftsinstruktion Sida 74

Asennus- ja käyttöohjeet Sivu 84

Monterings- og driftsinstruktion Side 94

1. General

The GENI module is an expansion module for circulator pumps GRUNDFOS

MAGNA Series 2000.

In addition to bus communication via GENIbus, the module offers the follow-

ing functions:

•External analog 0-10 V control, see section 3.

•External forced control, see section 4.

•Control of twin-head pumps, see section 5.

2. Electrical connection

The electrical connection and protection should be carried out in accordance

with local regulations.

Carry out the electrical connection as shown in fig. 1.

Note:

• If the 0-10 V input is used, there must be a connection across terminals

MIN and (input for min. curve must be closed).

• All cables used must be heat-resistant up to at least +85°C.

• All cables used must be installed in accordance with EN 60 204-1.

Before fitting the terminal box module, these installation and oper-

ating instructions should be studied carefully. The installation and

operation should also be in accordance with local regulations and

accepted codes of good practice.

Never make any connections in the pump terminal box unless the

electricity supply has been switched off for at least 5 minutes.

• Wires connected to

- outputs NC, NO, C,

- inputs Start/stop, A, Y, B, MIN, MAX, 10 V, X, Q, Z and

- supply terminals

must be separated from each other and from the supply by

reinforced insulation.

• All wires connected to a terminal block must be tied up at the

terminals.

Fig. 1

Connection examples can be found on pages 103 to 106.

3. External analog 0-10 V control

The GENI module has an input for an external 0-10 VDC analog signal trans-

mitter. Via this input, the pump can be controlled by an external controller if

the pump has been set to one of the following control modes:

TM02 0236 0904

4XQZBYA

MIN

MAX

10 V

5 6 7 9 10 1112 212223

Min. curve

Max. curve

Analog 0-10 V

input

Screen

DC 0-10 V

Min. Max.

Bus Twin-head

pump

signal

•Constant curve.

The external analog signal will control the pump curve within the range

from the min. curve to the constant curve selected according to the char-

acteristic in fig. 2.

•Proportional-pressure or constant-pressure control.

The external analog signal will control the setpoint for the pump head be-

tween the setpoint corresponding to the min. curve and the setpoint se-

lected according to the characteristic in fig. 2.

At an input voltage lower than 0.5 V, the pump will operate according to the

min. curve. The setpoint cannot be changed.

The setpoint can only be changed when the input voltage is higher than

0.5 V.

Fig. 2

Note:

• The max. curve input must be open.

• The min. curve input must be closed.

See connection examples on pages 103 to 106.

The examples below illustrate the use of an analog control voltage in con-

nection with a pump in constant-pressure control mode:

Fig. 3

Note: As will appear from the above figure, the control range will be reduced

if the setpoint of the pump, Hset, is set to a lower value.

TM00 5550 0904

TM01 1384 4497

TM01 1385 4497

890107654321

Max. setpoint/constant curve

Setpoint set/constant curve

Min. curve

8,6

7,2

5,8

4,3

3,0

1,5

0,5

Hset

7,5

5,0

2,5

0,5

Hset

4. External forced control

The GENI module incorporates inputs for external signals for the forced-con-

trol functions:

• Max. curve duty.

• Min. curve duty.

See connection examples on pages 103 to 106.

Functional diagram: Max. curve input:

The max. curve input is only active if the terminals of the start/stop input are

connected.

Functional diagram: Min. curve input:

The min. curve input is only active if the terminals of the start/stop input are

connected and the input for max. curve is open.

Max. curve

Normal duty

Max. curve

Min. curve

Normal duty

Min. curve

5. Control of twin-head pumps

It is possible to connect two single-head pumps so that they operate as a

twin-head pump.

Fit a GENI module in the terminal box of each of the two single-head pumps

and connect the modules using a wire.

Master pump (the pump which is going to start first) connection: Connect a

jumper across terminals “X” and “Q”, see example on page 105.

Slave pump connection: Connect the pump as shown in the example on

page 106.

The pumps can be set to one of the following operating modes:

•Alternating operation. Pump operation alternates every 24 hours. If the

duty pump stops due to a fault, the other pump will start.

•Standby operation. One pump is operating continuously. In order to pre-

vent seizing-up, the other pump will start at a fixed frequency. If the duty

pump stops due to a fault, the other pump will start.

The operating mode is selected by means of a mechanical contact in each

module. The contacts in the two modules must be set to the same position.

If the contacts are positioned differently, “Standby operation” is selected.

Fig. 4

Operating the pump:

The connected pumps can be set and operated in the same way as single-

head pumps. The duty pump uses its setpoint setting, whether it was made

by means of the control panel, via the R100 or via bus.

Note: Both pumps should be set to the same setpoint and control mode.

Different settings will result in different operation when changing between

the two pumps.

TM02 0243 0904

Standby operation

Alternating operation

6. Bus communication via GENIbus

The GENI module enables serial communication via an RS-485 input. The

communication is carried out according to the Grundfos bus protocol, GENI-

bus, and enables connection to the GRUNDFOS Pump Management System

2000, a building management system or another type of external control sys-

tem.

Via the bus signal, it is possible to set pump operating parameters, such as

desired setpoint, temperature influence, operating mode, etc. At the same

time, the pump can provide status information about important parameters,

such as actual head, actual flow, power input, fault indications, etc.

For further details, consult the operating instructions for the GRUNDFOS

Pump Management System 2000 or contact Grundfos.

Note: When the pump is controlled via a bus signal, the number of settings

available on the pump control panel or via the R100 will be reduced.

The setpoint and the control mode can only be set via the bus signal. The

pump control panel and the R100 can only set the pump to max. curve and to

stop. However, an R100 is required if a number is to be allocated to the

pump.

7. Fitting the module

1. Switch off the electricity supply by means of the external mains switch.

2. Open the terminal box cover and remove the label “MODULE”.

TM02 0457 3503 TM02 0456 3503

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