victron energy MultiPlus-II 48/3000 Energy Storage System Installation Guide

: June 9, 2024
: victron energy

Table of Contents

victron energy MultiPlus-II 48/3000 Energy Storage System
Understand how a Victron Energy ESS system works
Decide what type of ESS
Select the system hardware
Install all equipment
Update the firmware of all equipment
Configure the inverter/charger (s)
Connect all communication cables
Set up VRM
Commissioning
References
Read User Manual Online (PDF format)
Download This Manual (PDF format)

victron energy MultiPlus-II 48/3000 Energy Storage System

victron-energy-MultiPlus-II-48-3000-Energy-Storage-System-
product

This quick installation guide lists all the steps that are needed to install and conﬁgure a Victron Energy ESS system. It brieﬂy explains each step. It also provides links to locations where more in-depth information about each step can be found.

The full ESS manual can be found here: design-installation-manual.

Understand how a Victron Energy ESS system works

Familiarize yourself with the Victron Energy ESS system. A good place to start is to watch this video:

Decide what type of ESS

There are a few diﬀerent ways to set up an ESS system up. A combination of these is possible as well:

DC coupled ESS
AC coupled ESS
An energy meter is used
Grid parallel
Essential loads are used

See the below drawings to get an idea of all possibilities. The ﬁrst drawing shows the wiring when a MultiPlus-II is used; and the second one shows how it is wired with a MultiPlus or Quattro.

Both drawings show all AC- and DC-Coupled combinations.

ESS system with MultiPlus-ll

$victron-energy-MultiPlus-II-48-3000-Energy-Storage-System-fig- $3$$

ESS system with MutiPlus

$victron-energy-MultiPlus-II-48-3000-Energy-Storage-System-fig- $4$$

Select the system hardware

Please see below lists. links are provided to the relevant equipment product pages You will need:

Victron inverter/charger(s): https://www.victronenergy.com/inverters-chargers.
Victron Interface MK3-USB: https://www.victronenergy.com/accessories/interface-mk3-usb.
A Victron GX device such as the Cerbo GX or Venus GX: https://www.victronenergy.com/live/venus-os:start.
RJ45 UTP cable(s): https://www.victronenergy.com/cables/rj45-utp-cable.
Batteries

For a DC-coupled ESS, you will also need:

Victron MPPT solar chargers: https://www.victronenergy.com/solar-charge-controllers.
Victron VE.direct cable(s): https://www.victronenergy.com/cables/ve.direct.cable.
Solar panels

For an AC-coupled ESS, you will also need:

Grid tied inverter
Solar panels

If the ESS needs an energy meter, you will need:

Victron Energy meters : https://www.victronenergy.com/accessories/energy-meter.

And one or more of the Energy Meter accessories:

Victron ASS030572018 – RS485 to USB interface 1.8m:
https://www.victronenergy.com/accessories/rs485%20to%20usb%20interface.
Victron Zigbee to USB and RS485 converter:
https://www.victronenergy.com/accessories/zigbee-converters.

To measure PV power coming from a grid-tie PV inverter of a type other than Fronius, SMA, ABB or Solar Edge, you will need one of these:

Victron Current sensor: https://www.victronenergy.com/accessories/ac-current-sensor.
Victron Energy meters: https://www.victronenergy.com/accessories/energy-meter.
Details on how to measure grid-tie PV inverter output are in the GX device manual:
https://www.victronenergy.com/live/ccgx:start#connecting_a_pv_inverter.

To equip the system with WiFi you will need:

Victron WiFi module: BPP900100200 or BPP900200200.
Details on connecting your GX device to the internet are in the GX device manual, chapter Internet.

In the case of a smart battery such as BYD, you might need:

VE.Canto CAN-bus BMS cable: https://www.victronenergy.com.au/cables/ve-can-to-can-bus-bms.

Install all equipment

Install and wire all system parts according to their manuals.
Do not connect communication cables between the various parts, this will be done at a later stage.

To find the applicable installation manuals see the links in the prevision steps. These links will direct you to the relevant product section. Then click on the applicable product. On the product page scroll down to “Downloads”, and then select “manuals” from the drop-down box.

Update the firmware of all equipment

GX device
The easiest way is to let the GX device (Cerbo GX) do an automatic update. This can be selected from its menu, once it is connected to the internet. Alternatively, update via an SD card. For instructions on how to update see: How to update a GX device.

Inverter/chargers and MPPT Solar Chargers
Use VictronConnect; instructions are in the VictronConnect manual, section Firmware updates.

Set up parallel and/or 3-phase inverters/chargers
(skip this step if only a single inverter/charger is used)
If the ESS system contains multiple inverters/chargers, they first will need to be set up to run in parallel and/or 3 phases.

For instructions on how to do that see this manual: Parallel, split- and three-phase VE. Bus systems.

Configure the inverter/charger (s)

The inverter needs to be configured

Download and install the VE Configure Tools software package from the Software downloads section.
Connect the computer via the MK3 interface to the inverter/charger.

See this video on how to use VE. Configure:

The following settings are important:

Battery monitor settings
Charger settings
AC input limit settings
Grid settings
Add ESS assistant to the Inverter/charger(s)

For details, see the relevant section in the ESS Design and installation manual.

Connect all communication cables

Connect GX device to inverter/chargers using RJ45 cable
Connect MPPT to GX device using VE.direct cable
Connect energy meters to GX devices using the USB to RS485 interface or Zigbee units
Connect the smart battery to the GX device, using a special RJ45 cable
Connect the GX device to the internet via an Ethernet cable or WiFi module.

Make the GX device settings