Victron Integration Guide

Rev 2.1 09-14-21

Fortress Power - Victron Inverter Guide

Skip to Step 6 if you are using eVault classic

Step 4 – Battery-to-Inverter communication setup

The Fortress batteries communicate with Victron GX using three wire CAN bus.

Closed loop communication between the Fortress eFlex and eVault MAX Batteries and Victron Inverter uses the

VE.CAN bus. This is provided only on Victron GX communication modules. A unique communication cable and

communication protocal is used to connect eFlex or eVault MAX batteries with Victron VE.Can. The setup is

shown below for each battery

NOTE: eVault batteries are supported with Victron Inverters in voltage mode only.

Standard ethernet cables can be used to make the custom cable. This conversion can be made in the field with

locally procurable items, but registered Fortress installer-dealers can also purchase pre-made cables at

https://fortresspower.com/shop.

eFlex:

Modified Battery-to-Inverter Communication cable

eFlex RJ45 pins 4+5 correspond to Victron pins 7+8

Cut a standard ethernet cable

cut out wires 1+2+3 and 6+7+8, these are not used

cross wires connecting 4+5 on the eFlex to 7+8 in the Victron

VE.Can port

VE.Can