QUICK GUIDE: FRONIUS INVERTERS WITH
AUTO-START GENERATORS
AN OVERVIEW ON HOW TO SET FRONIUS INVERTERS TO SWITCH TO
STANDBY WHEN A GENERATOR STARTS
Quick Guide
© Fronius Australia Pty Ltd., FG
Version 5.0/2020
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Gender-specific wording refers equally to female and male form
(c) Fronius Australia Pty. Ltd, 06/2019 1/5
GENERAL
Important note: If this site requires Export Limitation, you will require another approach for Auto-Start
Generators. Please contact Fronius Tech Support.
To switch a Fronius inverter to standby when a generator automatically starts up during a power outage, the
Fronius inverter requires a voltage-free dry contact input signal from the generator auto-start. The 2-wire cable
from the generator/ change over switch AUX contact will be connected to the terminal block on the Fronius
Datamanager 2.0.
Connect one of the cables to one of the +’s and the other to pin 2.
The IO control will then need to be set on the PV inverter homepage to put the inverter into Standby when the
generator starts. To get to the PV inverter homepage:
1) On the inverter go to Setup -> Wifi Access Point -> Activate
2) On a phone, tablet or laptop go to wifi settings and connect to the Fronius wifi access point with the password
shown on the screen of the inverter.
3) Open a web browser and type in the IP address: 192.168.250.181
(c) Fronius Australia Pty. Ltd, 06/2019 2/5
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