Cerbo GX Installation

VE.Can is intended to be used for the Victron (and Victron compatible) VE.Can products, such as the VE.Can MPPTs, and
VE.Can Lynx Shunt. You can string these VE.Can 250 kbit/s devices together along this bus. It must be terminated at both ends
with the included VE.Can terminators.
BMS-Can is intended to be used with compatible managed battery systems, such as Pylontech, BYD, Freedomwon and many
more. These must be terminated at the Victron end (on the Cerbo GX) with the included terminator (same one as used with
VE.Can). It may or may not be necessary to terminate at the managed battery, BMS or BMU - this will be documented in the
specific Victron Compatible managed battery instructions for that battery. Some batteries automatically terminate.
You can't mix VE.Can and BMS-Can on the same bus. If you wish to use both, they require a GX device with two seperate buses,
each with 2 RJ45 ports - 4 CANbus ports in total.
You cannot set BMS-Can ports to anything other than 500 kbit/s, and disabled.
You CAN set the VE.Can port from 250 kbit/s to be 500 kbit/s (or one of several other CANbus speeds for other CANbus
applications).
Other types of Batteries and BMS may claim compatibility with BMS-Can, or VE.Can, but if they are not on the battery
compatibility list then they have not been tested and confirmed to work by Victron.
One extra element of possible confusion is that there ARE some BMS products on the market that use a CANbus BMS profile at
250 kbit/s.
These can only be connected to the VE.Can port, and it must also be set to match this (VE.Can & CAN-bus BMS (250 kbit/s)) in
the services menu for the VE.Can port.
These BMS can be used in the same cable daisy chain as other Victron VE.Can devices.
2.3.5. BMV-600 series
Connect the BMV-600 using the VE.Direct to BMV-60xS cable. (ASS0305322xx)
2.3.6. DC Link box
Connect the DC Link box, using the RJ-12 cable supplied. Then connect the BMV-700 to the Cerbo GX - see connecting
BMV-700 for more instructions.
2.3.7. VE.Can Resistive Tank Sender Adapter
See its page and manual on our website for details about the Adapter.
To connect a product with a VE.Can port, use a standard RJ45 UTP cable.
Don't forget to terminate the VE.Can network on both ends using a VE.Can terminator. A bag with two terminators is supplied with
each VE.Can product. They are also available separately (ASS030700000). (Available with straight or elbow connectors.)
Make sure that the CAN-bus is powered, see the Power chapter in the Tank Sender Adapter manual for details.
2.4. Connecting a PV Inverter
Measuring the output of a PV Inverter will provide the user with an overview of both actual power balance and the energy
distribution. Note that these measurements are only used to display information. They are not needed, nor used, by the
installation for its performance. Besides monitoring, the GX device can also curtail some types and brands of PV Inverters, ie.
reduce their output power. This is used, and required, for the ESS Zero feed-in feature.
Direct connections
Type Zero feed-in Details
Fronius Yes LAN Connection, see GX - GX - Fronius manual
SMA No LAN Connection, see GX - GX - SMA manual
SolarEdge No LAN Connection, see GX - SolarEdge manual
ABB Yes LAN Connection, see GX - ABB manual
Using a meter For PV Inverters that cannot be interfaced digitally, a meter can be used:
Type Zero
feed-in
Details
AC Current Sensor No Connected to inverter/charger analog input. Lowest cost - least accurate. Energy
Meter
Cerbo GX Manual
Page 5 Installation