I am currently trying to setup a Multiplus, Victron Lithium batterys, VE.BUS BMS, and a BMV712 in my RV. I have previously had a dc-dc charger and solar charger installed that does have custom settings so i can program them for the lithium battery. I do not want to have the expense of replacing them with victron chargers at this time. Can i use a battery protect inline between the chargers and the battery to stop charging in the case of over voltage? Would this battery protect be trigger with the VE.Bus BMS or for the BMV712 relay?

When AC coupling with a 10KVA Quattro and a 8.2kw Fronius with BYD Batteries we are getting systems that are Overloading and shutting down frequently especially on hot days. Is there anyway that the Quattro could back of the Fronius inverters with the frequency shift when it senses it is going into overload or high temperature

We studied the manuals and spoke to our in country distributors in South Africa and we are getting conflicting messages and need to get to the bottom of this.

We in the process of implementing 2 x Quattro 48/15000 in parallel per phase i.e. 6 in total. Reading the manual it states that if the AC voltage on AC-in-1 or AC-in-2 is switched through, but the load demands more current than the mains can supply, the inverter will be switched on to supply additional current.

Which refers to the PowerAssist where the Quattro can together with a maximum input current of 100A + 65A from the inverter give us 165A (15kVA model) or in our case parallel connected Victrons, we will get 330 Amps per phase (2 x 100a AC Input + 2 x 65A Inverter).

What we can't get a definite answer on, is if this is just for a "rush-in" situation or can it be for a longer period, as we do have sometimes on this site more than a 200A requirement for periods of one hour.

The one solution is we can purchase another 3 Victrons, one per phase but for the short periods it will be in use it is not worth it.

Looking forward to your response.

I have a centuar 12 VDC / 40A charger with a house battery bank of 300 Ah. When I start my generator the charger goes to approximately 50A and will continue to charge for approximately 30 - 60 minutes. The current at that time is approximately 35 A and than the charger switches to float prematurely in my mind. Batteries are not fully charged. I have checked and the charger did not seem too hot and the fans were still running. Is this the expected behavior? Thanks Rob.

Hi all,

I have a multiplus-II 48 which is currently operating as a backup for when grid fails, it is in a house.

The mains is split at an ATS-Automatic transfer switch, the multiplus-II is installed at a remote shed.

When mains fails the ATS switches to the multiplus-II but with a 16A limit, in normal operation the house load does not go through the multiplus-II because it is limited to 16A and 40A is peak load. In backup mode (mains has failed) the power to the remote location is off the house is on.

I am looking at adding PV via the 250/60 MPPT in to the multiplus-II.

I plan to modify the ATS to provide unswitched power at all times to the remote location, Install venus/colour gx at the remote position and AC monitoring at the origin (60m apart)

Q1, Can I use cat5/6/7 for comms between the GX & AC sensor with the victron usb adaptor at the GX

Q2, Given in standard operation the loads do not go through the multiplus-II at all will it just backfeed PV & Battery capacity to the local grid up to 16A? (The AC 1 & 2 outputs are basically disconnected in standard operation hence forward feeding is not possible)

Q3, Can I get standard RS232 (not TTL) out of the GX?

Q4, How do I prevent back-feeding on mains fail? I fear the main contactor will stay energised as it will sense the voltage from the Multiplus-II which in turn will prevent switch over to backup.

Thanks

Martyn

@mvader (Victron Energy Staff)

Hello,

I have a customer who would like to monitor multiple small PV installations using AC current sensors. My questions are:

1. Can multiple sensors be used in 1 installation?

2. What is the max length of cable run for these?

Many thanks

Hi All

This issue maybe present in earlier firmware versions as well but I have not tested these.

This will only affect you if you have a grid connection and are turning the AC! IN off by using assistants to turn off the AC1 In INPUT , if you are using a generator then I do not think it will affect you as well.

Having some wild Freq/Hz movements every 14 sec 49.9 to 53 Hz

Multiplus 48/5000 230 Volt (firmware 433)

ESS installed

5000 PV grid tie

4500 watt panels

venus GX (Firmware 2.22)

VE BMS

10 Kw battery bank

current SOC under 30% so full amps of 70 is no problems

There should be NO reason that the Hz should be increased to shut the PV down

Assistants installed

ESS

General Flag (Ignor AC on AC1 in) (used so the Venus Genarator autostart can be used)

Program relay (turn AC1 in relay on) (used so the Venus Genarator autostart can be used)

Program relay (Turn AC1 in relay off) (used so the Venus Genarator autostart can be used)

AC Current Sensor connected to AUX 2 (Serial numbers are ok I tied Temp sensor first and it still had same issue so moved to AUX 2)

and the hz fluctuation still occurs 50 to 53 then back to 49.9 then up again every 14 sec (there abouts)

I have tried removing all assistants except ESS and it stopped doing it ( is this a hint)

but the VRM display then showed no AC loads

Further testing

Now have ESS installed and AC current sensor only and its not doing the freq Fluctuations. holding 50hz

have now added back general flag as well

Still no Hz movements (yes AC1 in power is disconnected by mains switch though not by turning ac1 relay off) (still no freq movement) Hmmmmm

Have now added the two relay controls back as well. and now I have found the issue

1. the issue of Frequency moving up to my PV cut off of 53Hz

well this happens when you use the Generator autostart to stop the generator thus in my case OPENING the AC1 IN relay. then the Issue OCCURS the Freq is unstable and moves 50 to 53 hz every 14 sec

CAUSE of issue

Now there is still Voltage on the AC1 IN relay but its turned off in the inverter so no ac in power but the voltage is still THERE and I think the inverter is still trying to sync to that Hz Freq signal

short term solution turn the incoming MAINS off

IF I manually turn all input OFF TO AC1 IN The fault or ISSUE goes away

further update and a fix

move the Assistant General flag to position one and the ess to position 2 and this stops the issue

To show what you can do with assistants, here's a small example, installation is on a boat (15m 'replica' Dutch Barge) now travelling the inland waterways of the Netherlands, Belgium and France.

Components: Quattro 24/8000, 20kWh Lithium ion (Eco-Lithium), 2x MPPT 150/35 + 6 320 Wp PV panels, Venus GX, digital remote panel.

As the Quattro has a minimum AC input Current limit of 11 A, this gives problems with low power shore connections, so I've made a switch for the customer to engage 'low shorepower limit'.

When shore power is available, usually you don't want a full charge, as the solar panels are usually capable of providing enough power, so another switch is to select 'full charge' of 'half charge' from shore power

(best picture I could find, not all switches installed and SOC meter going to 12)

assistants:

Details:

AC-in is ignored when 'aux1' is closed

The 'solar priority' uses a switch wired to 'relay K2' and then to 'aux1'
the generator start stop assistant is used for this, if the battery is charged above 27,5 V the relay is closed, so if the switch is 'on' it than it will ignore AC2 input (shore power)
Also, when load is higher than 1800 W it will re-connect shore power, to release again when load is below 1200 W

Low current shore power function:

When this is engaged (switch closed), a lower charge current is set by wiring the switch to 'aux 2' activating the 'charge current control' assistant.
The switch is also wired to 'relay K1' and from this relay to 'aux 1'
When the AC load is higher than 400 W the K1 relay closes, so ignoring AC-input. when load is below 300 W it is opened again.

The trick to using a 6A or 10A shore power connection:
-lower charge current so it only uses about 5A
-disconnect AC input when loads are higher than x W
It might sound strange, but this works perfectly on this system, as the inverter has enough power to run all loads (including Air Conditioning, induction hob and oven)

the first two assistants (programmable relays) in the image are to disconnect AC out 2 when battery is low on SOC, the electric cooking and Air Conditioning are on this output.

Yes I really like the assistants ;)

I have a Centaur 12/40.

I have a Honda 2200i and want to run my water maker and charge the house batteries at the same time. The water maker uses 6 amps of the 18.3 available,

That leaves 12 amps at 110v

What is the min amps I can input to charge with this unit with out damaging the unit or batteries?

Hello.

I support an 72Foot Boat with a Victron Setup built in.

Built in :

Quattro 24V/5000

VE Net Battery Shunt

Blue Power Panel

Batterybank of 12 220 Ah AGM Victron

PV System with No Name Loader

The Owner wants a New Setup.

Wich means the PV System will now be guided by a new MPPT Victron Loader

Ther will be an additional Windturbine to load batterys

I wnat to switch to the Color gx panel an link the mppt with VE direct, so the Power wich comes from the PV will be visual.

In best case the powerinput from the Windturbine will be shown seperatly on the GX panel. How to do it?

And how to integrate the VE Shunt? Can i use a VE Net to VE Bus Converter?

Thanks for helping me out ;)

Hello!

Has anyone been successful with this guide:

https://github.com/victronenergy/venus/wiki/raspberrypi-install-venus-packages on a raspberry pi using the latest Raspbian (lite) Stretch? I get a segmentation fault when trying to run /opt/victronenergy/vedirect-interface/vedirect-dbus directly

I can provide more info (core dump, etc)

Can anyone confirm what the latest actual venus PI images run on? I thought about trying to extract the vedirect-dbus binary from that image and trying.

Hi,

I am an It Manager. I need to do a port forwarding for a Victron but I have some trouble. Customer ask me to forward port 80/81 TCP but it seems not enough. I see the home page but it answer "NOT CONNECT".
For network reason I can not forward external port on 80 and 81 but I need to do a NAT-T to 22001 and 22002 TCP external port.
Maybe we need also another port ?

Thansk

In this scheme could the use of Cyrix be useful? Which kind of Cyrix would be better? How to connect it? Thank you

Hi,

I have an older Phoenix multiplus 24/2000/60 and wondering if I could use a Victron digital multi control to manage it?

I have an ESS and I would like to set a specific SOC at 07:00 so the batteries are able to supply the loads before the PV can do it.

I have constant loads during the night and I would like to tell the battery: Keep 70% for the morning, and the remaining 25-30% can be discharged equally during the night.

Is there a possibility of doing that? I have seen the charging schedule, but this way I won't be able to supply a part of the night consumption.

Thanks and regards

I have a Lynx Shunt VE.CAN that has been installed on my boat since 2015. During the installation I upgraded the firmware to v1.09. The shunt has been working fine since that time. I have it on my N2K network and display the CAN data using Maretron N2K view on my PC.

Recently I reviewed the current firmware for my Victron devices and noticed a warning about not using v1.09 and that only v1.08 should be used on the Lynx Shunt VE.CAN. The warning indicates that v1.09 may work for a long time but will eventually cause the product to enter an endless reboot loop making the product unusable.

Reading this I decided that I should 'down grade' to v1.08 which I did.

Now after the downgrade the shunt is no longer transmitting PGN 127508 Battery Status for Battery Instance 0. It is transmitting for Battery Instance 1. It is transmitting PGN 127506 DC Detailed Status for DC Instance 0.

I have checked all the VREGs and all seems correct. I have sent the following commands to the unit over can bus:

x102C - Synchronize Monitor Command

x1029 - Zero Current Command

x1030 - Clear History

I have also tried power cycling the shunt.

I have also tried reflashing the shunt (with the same 1.08 firmware).

Please help!

Jens

is it possible to remove a firmware update.

updated my Smart Solar 2 days ago and now only get half solar power as before

need to wind back to earlier version

current version v1.39

like to go back to v1.37

Is it a good idea?

Hi all,

I´m currently planning on my system for the new RV coming in May.

I plan to use two 160AH Victron Lithium with the VE.Bus BMS and a CCGX connected to a 12/3000 Multi. So far everything clear.

But how does the MPPT 100/50 come into the equation? In the VE.Bus BMS manual there is a VE.Direct non inverting direct remote cable mentioned for connecting to the BMS. When I use that, of course I don't get readouts on solar in the CCGX and can't configure my device this way and with the Victron Portal.

If I connect the VE.Direct from the MPPT to the CCGX, is the "stop charge" or "reduce charge current" signal transmitted via VE.Direct to the MPPT? Like it is to the Multi through its VE.Bus? I´m unsure because there are system diagrams with the big MPPT 150-85 VE.Can solar chargers in my desired configuration, and even these have the yellow cable for "stop charging" or "shutoff" hard wired, despite being connected via VE.Can...

I don´t get secure documentation on this - perhaps you could enlighten me ;)

All the best, Martin.

With an AC Multiplus system it's easy - when AC input is ok then that is your output, when it's not ok then the inverter and battery take over. When the battery is charged it enters a resting state.

How do you do this with a DC output system where Phoenix is a DC power supply and battery is the backup supply?

My concern is that to my knowledge LiFePo4 batteries do not like 24/7 charging so should the (Phoenix?) charger output only to load when charging is completed? How?

The need...

On a boat we have a power snorkel (think diving using an air tube with an air pump floating overhead) and looking to change the AGM batteries over to a Lithium battery. However, naturally, it’s not that simple.

We have an Enerdrive LiFePo setup charges by a Phoenix when on shore power and a 100/30 mppt smartsolar plus alternators while at sea. Don’t want to include the 240v/Inverter in the charging setup as it chews power on standby and the batteries run down when the boat is not in use.

So the simple part of the requested recommendation is for a lithium friendly charger to run off the 12 DC circuit tocharge the new Lifepo4.

The second more complex issue is that because the power snorkel is not used that often the battery sits idle for weeks, months some times. I would like to store the battery at around 50% if charge and it would be brilliant if someone could recommend a way of charging to 50% !!! Weird huh!! But I think you know why!

Anyway, that’s the two part request.

Thanks in advance

Mick