Fronius How to daisy chain Fronius SnapINverters in a Solar Net communication loop Quick Guide [EN]

HOW TO DAISY CHAIN FRONIUS
SNAPINVERTERS IN A FRONIUS SOLAR
NET COMMUNICATION LOOP

FOR FRONIUS GALVO, FRONIUS PRIMO,
FRONIUS SYMO & FRONIUS ECO

Quick Guide

© Fronius International GmbH
Version 1. 0 / 02/2019
Fronius Solar Energy

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TABLE OF CONTENTS

1

SCOPE OF USE ...............................................................................................................................4

2

NETWORKING FRONIUS INVERTERS IN A COMMUNICATION LOOP ......................................4

3

CABLE REQUIREMENTS ...............................................................................................................6

4

SETTING THE INVERTER ADDRESS ............................................................................................7

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1 SCOPE OF USE

When installing multiple inverters on the same site, it is possible to daisy chain Fronius inverters with each
other.
To do this it is necessary to connect a Master-Inverter with up to 99 Slave-Inverters.

 Master Inverter = Fronius SnapINverter + Fronius Datamanager 2.0 (example Fronius Symo 10.0-3-

M)

 Slave Inverter = Fronius SnapINverter (example Fronius Symo 10.0-3-M light)

In case there are mulitple Master inverters installed, it is possible via the “Master/Slave” switch on the
Datamanager to transform a Master inverter into a Slave unit.

2 NETWORKING FRONIUS INVERTERS IN A

COMMUNICATION LOOP

When linking multiple inverters, each inverter must be connected in a communication loop using a TIA/EIA­568B compliant Ethernet cable.

SnapINverters come equipped with 2 RJ45 sockets labelled IN and OUT. The Ethernet cable connection
should always run from the OUT socket on one inverter, to the IN socket on the next inverter.

RJ45 termination plugs supplied with the inverter must then be installed in the empty Solar Net IN and OUT
connection sockets at the start and end of the daisy chain.

Up to 99 slave inverters can be connected to a master inverter. To maximise communication speed,
communication loops should be kept as short as possible.

(1) SnapInverter (Galvo, Primo, Symo, Eco) with Fronius Datamanager
(2) SnapInverter (Galvo, Primo, Symo, Eco) without Fronius Datamanager
(3) Smart Phone with Fronius Solar.web App
(4) Terminal Plug

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IMPORTANT! To maintain the IP protection class of the inverters, be careful to maintain a tight seal at the
communication cable inlet.

/ Only remove blanking plugs required for the number and cross-section of the data communication

cables being used.

/ Before screwing the sealing cap over the cable inlet, double check that all openings are closed with

blanking plugs and that the sealing plug is fitted correctly.

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3 CABLE REQUIREMENTS

The data connection for the Fronius Solar Net client is a 1:1 connection using 8-pin data cables and RJ-45
plugs. The overall line length in a Fronius Solar Net ring must not exceed 1,000 mts.

Shielded CAT5 (new) and CAT5e (old) cables compliant with ISO 11801 and EN 50173 must be used for the
Fronius Solar Net client cabling. Other cables are not permitted.

IMPORTANT! Do not use ISO/IEC-11801 U/UTP cables!

Allowed cable types:

- S/STP -F/FTP -F/UTP

- F/STP -SF/FTP -U/FTP

- S/FTP -S/UTP -U/STP

The shield must be crimped onto a CAT5-compatible shielded plug. Make sure that the shield is only
grounded on one side of the cable!

Due to the fact that the wires in Ethernet cables are twisted, you must make sure the twisted pairs of wires
are assigned correctly for cabling in accordance with TIA/EIA-568B:

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4 SETTING THE INVERTER ADDRESS

To enable communication between inverters, it is necessary to assign each inverter in a communication loop
a unique address (inverter number).

To assign the unique number, please follow the steps below:

Enter the Setup Menu on the inverter display

Choose DATCOM in the Setup Menu

Choose Inverter Number in the DATCOM Menu

Number each inverter in sequential order

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