Grundfos Magna Manuale utente

GRUNDFOS INSTRUCTIONS

Grundfos MAGNA, Relay Module

Installation and operating instructions

Grundfos MAGNA, Relay Module

Installation and operating

instructions 4

LIMITED WARRANTY

Products manufactured by GRUNDFOS PUMPS CORPORATION

(Grundfos) are warranted to the original user only to be free of defects in

material and workmanship for a period of 24 months from date of

manufacture. Grundfos' liability under this warranty shall be limited to

repairing or replacing at Grundfos' option, without charge, F.O.B.

Grundfos' factory or authorized service station, any product of Grundfos'

manufacture. Grundfos will not be liable for any costs of removal,

installation, transportation, or any other charges which may arise in

connection with a warranty claim. Products which are sold but not

manufactured by Grundfos are subject to the warranty provided by the

manufacturer of said products and not by Grundfos' warranty. Grundfos

will not be liable for damage or wear to products caused by abnormal

operating conditions, accident, abuse, misuse, unauthorized alteration or

repair, or if the product was not installed in accordance with Grundfos'

printed installation and operating instructions.

To obtain service under this warranty, the defective product must be

returned to the distributor or dealer of Grundfos' products from which it

was purchased together with proof of purchase and installation date,

failure date, and supporting installation data. Unless otherwise provided,

the distributor or dealer will contact Grundfos or an authorized service

station for instructions. Any defective product to be returned to Grundfos

or a service station must be sent freight prepaid; documentation

supportingthewarrantyclaimand/oraReturnMaterialAuthorizationmust

be included if so instructed.

GRUNDFOS WILL NOT BE LIABLE FOR ANY INCIDENTAL OR

CONSEQUENTIAL DAMAGES, LOSSES, OR EXPENSES ARISING

FROM INSTALLATION, USE, OR ANY OTHER CAUSES.

THERE ARE NO EXPRESS OR IMPLIED WARRANTIES, INCLUDING

MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE,

WHICH EXTEND BEYOND THOSE WARRANTIES DESCRIBED OR

REFERRED TO ABOVE.

Some jurisdictions do not allow the exclusion or limitation of incidental or

consequential damages and some jurisdictions do not allow limit actions

on how long implied warranties may last. Therefore, the above limitations

or exclusions may not apply to you. This warranty gives you specific legal

rights and you may also have other rights which vary from jurisdiction to

jurisdiction.

Original installation and operating instructions.

CONTENTS Page

1. Symbols used in this document 6

3. Connection 7

4. Mounting 8

4.1 Connecting the cables 8

4.2 Mounting the module 9

5. External start/stop 10

6. Signal relay 11

6.1 Fault indication 11

6.2 Ready indication 12

6.3 Operating indication 12

6.4 Functional diagram 12

7. Priority of settings 13

8. Fault finding chart 14

8.1 Checking the module 15

9. Technical data 15

Warning

Prior to installation, read these installation and operating

instructions. Installation and operation must comply with

national, state, and local regulations and accepted codes

of good practice.

1. Symbols used in this document

2. General description

The relay module is an expansion module for circulator pumps

GRUNDFOS MAGNA 32-100.

The relay module is used for the control and monitoring of the pump. The

pump can be started/stopped via an external relay and give fault, ready

or operating indication. The functions can be utilized via an external

control system, e.g. a building management system.

The relay module offers the following functions:

•External start/stop,see section 5.

•Fault, ready and operating indication via signal relay,see

section 6.

Warning

If these safety instructions are not observed, it may

result in personal injury!

Warning

If these instructions are not observed, it may lead to

electric shock with consequent risk of serious personal

injury or death.

Caution

If these safety instructions are not observed, it may result

in malfunction or damage to the equipment.

Note

Notes or instructions that make the job easier and ensure

safe operation.

3. Connection

The electrical connection and protection must be carried out in

accordance with local regulations.

The relay module is powered wirelessly from the pump.

To ensure correct function, follow the instructions in section

4.2 Mounting the module.

Connect the module as shown in fig. 1.

Fig. 1 Connection terminals

A connection example is shown on page 8.

Caution

• All cables must be heat-resistant up to +185 °F (+85°C).

• All cables must be installed in accordance with National

Electric Code.

Wires connected to

• the outputs NC, NO, C and

• the start/stop input

must be electrically isolated from each other.

TM03 0877 0705

External start/ Signal relay

4. Mounting

4.1 Connecting the cables

Fig. 2 Cable connection

TM03 0876 0705

4.2 Mounting the module

TM03 0881 0705

1. Align the two hooks on the

module.

2. Gently push the module

into place so that the

hooks engage with the

control box.

TM03 0880 0705

3. Check that the module

and the control box touch

each other.

4. Check that the two hooks

of the module engage

correctly with the control

box.

5. Fasten the module with

the screw.

5. External start/stop

The relay module incorporates a digital input for an external contact.

The pump can be started and stopped via this input.

When started, the pump will operate with the setpoint set on the control

panel or with the R100.

Functional diagram: Start/stop input

TM03 0896 0705

6. Correctly mounted

module.

Note

If the external contact is used, the connection between

terminals 7 and 8 must be replaced by the external

connection.

Contact position Function

Stop of pump

Start of pump

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