Grundfos Magna Manuale utente
GRUNDFOS INSTRUCTIONS
Grundfos MAGNA, Relay Module
Installation and operating instructions
2
3
Grundfos MAGNA, Relay Module
Installation and operating
instructions 4
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.
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Original installation and operating instructions.
CONTENTS Page
1. Symbols used in this document 6
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.
6
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.
7
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
8
4. Mounting
4.1 Connecting the cables
Fig. 2 Cable connection
TM03 0876 0705
9
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.
1
2
3
4
5
10
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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