Hello.

Main reason why I'm asking this is because ESS manual says the Fronius SmartMeter can't be used in Victron/Fronius ESS setup.

My goal is to use PV power mainly and primarily to produce heat (second to use the surplus, third to store the surplus).

My idea was to set up the system like in the diagram attached and configure Victron ESS with "control without grid meter" = OFF

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My questions are:

- Will this have an impact on Victron/Fronius ESS setup?

- Will Fronius Zero feed-in still work?

Many thanks for your thoughts and Merry Christmas!! Mike

I have a fronius on multi output 1. Removed the meter from grid when i installed the multi.

Like to reinstall meter on the multi output to split out 1 and 2. And disply on ccgx

Hi,

Relatively new to this, and have a question. I just made my setup with 3 multiplus 2 48v 5000 units in 3 phase, with a lifepo4 made 30 kWh battery bank and batrium bms.

The color control however gives strange numbers on screen ( see attachment)

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1 side note: i powerd up everything last evening, and the system was working well on battery usage, but this morning when i woke up, all power was down, and the ccgx gave a warning there was a phase shift detected. I had to switch 2 phases, but apparantly now the system is behaving weird to me. Any advice?

Hi, my

VE.Direct Bluetooth Smart Dongle went dead after a software update, connected to a MPPT 75/15.

No sign of life, plugged and unplugged removed and reset power, no lights. Anyone got any ideas?

Cheers

Tex

So I had a problem with my previous Quattro 48/10000 and could never get it to charge my batteries above 80 amps which got me running my generator for so much longer than I needed to. The story is https://community.victronenergy.com/questions/31438/how-do-i-get-my-victron-quattro-to-charge-batttery.html?childToView=31825#answer-31825 .

Eventually I decided to upgrade to the 48/15000 which is running on a firmware version 459.

Everything works, more or less, perfectly, until my generator comes on at 70% SOC. The unit goes straight away to float even though the batteries are low on charge. Nothing worked (tried all sorts on combinations on the charger tab of the VEConfig) until I re-started the unit from the toggle switch on the front panel. Switching the unit OFF and the ON a few seconds later brings the charger to bulk and all is well.

I do not have this problem when grid power comes on and the batteries need charging. The Quattro goes to bulk then adsorption and eventually float (when the batteries are full)

Can anyone suggest what I can do to avoid the constant need to restart the unit?

Hi all,

I have a SmartSolar MPPT 75/15 that I use along with a PV panel on the roof of my vehicle to maintain a deep cycle battery for when I go away camping and the link.

I monitor it via the Android app, connecting via the VE.Direct Bluetooth Smart dongle, this has worked flawlessly, until now.

With the updated app recently being released and apparently updated firmware for both the BT dongle and the 75/15, I went out to my vehicle to perform the upgrade.

Sadly the app could not find the BT dongle. I went through the usual procedure of disabling and re-enabling BT on my phone, still nothing, this was within a couple of metres of the dongle, yet it discovered my BlueSmart charger located 20 or so metres away on the other side of the house!

Looking at the dongle, there were no LED's lit. Disconnecting and reconnecting the dongle proved to do nothing.

I removed power from the SmartSolar charger (PV and battery), let it sit disconnected for several minutes (Hello, IT. Have you tried turning it off and on again? :) ) And reconnected battery and PV in the correct sequence. Alas, still no LEDs and no dongle to be discovered by the app.

Having a background in electronics I decided to go to the next step, check that it was getting power, opening the case of the dongle and armed with my trusty multimeter I probed the Vin and Gnd connections on the circuit board, it is getting 5 volts.

Unfortunately this is as far as I can go. Without a microscope (SMD is so tiny!) and an insight to the circuit I am at a loss.

From what I can see the BT module in the dongle (BL600-SA-05) is a 3.6volt device, so I am guessing there is a voltage regulator on the board, but once again, without a microscope I am unable to determine if this is the case, and if so which SMD it is.

Has anyone else had this experience? Can anyone provide me any guidance as to how I may be able to resolve the issue without having to purchase another dongle? That is something I want to avoid at this time as I have limited income due to upper and lower spinal injuries.

Kind regards,
Damien

Hi Forum!

I'm using a MPPT150/45

with around 2,1kWp of PV Panels

connected to a GEL battery at 48V

to the battery are 3 MultiPlusII 5000 connected (3phase)

Sometimes I'm getting strange very short (seconds) PV high voltage peaks to 151V.

I'm managed to catch such an incident. An swichted the MPPT off immediately and measured PV voltage it was about VOC=130V only.

In MPP Mode the PV Operates usally between 80 and 90V

So what can cause these short spikes?

What I found out is that this likely happens when there are quick load changes while the battery is full or nearly full. (working in float or absoption mode). It doesn't occur when battery is in bulk charging mode.

Therefore I presume that this has something to do with input inductance of te MPPT PV Input. The inductance will maintain the current while the MPPT is tryinig to reduce which will naturally raise the voltage. After that it is rapidly declining to effective VOC voltage. (~130V in the example above).

So what should I do? Care? not care? Settings Modifications? Maybe add a capacitor to the input? capacitor is raising short input current spikes to the MPPT which is probably no good idea.

Please suggest! Thank you!

Hi Community,

my Question:

How can I manage to feed in excess solar power during absorption phase as well?

my system:

• Octo GX
• 3 pcs MultiPlus-II (3 phase connection)
• 3 pcs DC Coupled MPPT Solar charge controller
• 2 pcs AC inverters from SMA connected to the UPS side of the MultiPlus each per one phase (L2 and L3) but not yet measured with energy meter.
• 48V lead GEL battery

how the system behaves, see image below

• battery is in absorption, so DC voltage constantly 57.5V in this phase
• AC power from SMA inverters on L2 and L3 is used to charge the battery
• excess AC coupled PV power is feed to the grid so far so good
• but DC coupled PV charger power is drastically reduced in order not to exceed 57.5V (in the image below reduced to 236W but often to as low as around 50W)
• The available DC coupled PV power at the time would have been around 1.5kW
• As soon as absorption phase is completed the DC coupled PV power goes up to the maximum as per solar input and the system starts feeding excess solar power to the grid.
• see second image as well, this was an overall clear and sunny day. so no need to reduce solar pv power on lunch time. should be a "nice" daily full power PV curve.

My config:

• DVCC enabled
• SVS enabled
• STS enabled
• feed in excess solar power enabled
• battery monitor is MultiPlusII on VE Bus

Best regards,
Matthias

[image]

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@Omondi Odhiambo commented on this forum that it was not allowed or possible to 'feed in' excess power generated from a solar system to the grid in Kenya. I would like to ask Omondi where he obtained that information from and if he could share the source with me. I have 'grid tie' solar systems set up in Ireland and in the UK, where most people with solar have a 'grid tie' system. All of Omondi's questions about how to get around the difficulties of not being able to 'feed in' make the application that I want to install in Nairobi, just like I have here in Ireland, very challenging. I want a grid tie system in Nairobi that a) provides power during the day, b) charges batteries during the day for me to use power at night and c) provides back up power when the Kenya grid goes down, which it does on average once a week and for several hours at a time once a month. Is there any prospect of this 'ban' of grid feed in changing Omondi?

We are trying to connect Venus with Quattro and CANbus Lithium to Simrad NSS12 evo3 Version 19.1.1 and can’t connect.
the error message is “cant connect to MQTT” and an image that doesn’t match the Venus 2.42 screen options. The Venus has MQTT on Lan (SSL) and or (Text).
we have tried every conceivable combination...
see screen shots below.

Advice please to get connected....

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I installed my BMV-712 and went through the setup via Bluetooth. I would like the display to be completely OFF: no light, no scrolling, no status

Nonethelss the unit keeps scrolling something like "Battery Capacity..." even though I have everything disabled via the BT App. I have set the capacity at 225Ah (2x Trojans), the setting is persistent so I know the BT setup worked.

Any way to fix this? I won't want the unit sucking extra power from my battery.

We are troubleshooting a Victron 8000 with two 24V Mastervolt lithium ion batteries that is not 'inverting.' It charges the battery banks, but when disconnected from shore power, it does not invert (the swicht is in the 'on' position). I don't see anything wrong in the configure software (only had the MK2 USB). The ground relays is checked and connected to the a Victron Autotransformer 120/240V 100A. Additionally, the Aux 1 and Aux 2 are connected to a Mastervolt Digital AC relays (configured in MasterAdjust software - no obvious errors there either). The batteries are 100% charged (around 26.8V with charger off).

The entire setup worked until a few months ago. Basically, when disconnected from shore power, the inverter would kick in until the generator puts out voltage, at which point the Quattro charger takes over again.

Thank you for everyone's help with this manner.

Have 3x systems with similar behaviour. All 3x 3phase systems with Lithium Batteries in ESS mode. When grid fails, loadshedding, get inverter overload error and inverter switch off. Need to manual start with toggle switch. We can switch the main breaker off 100 times and no problem. When the council switch off the grid then overload. It sometimes is preceded with low battery voltage message VEBus but voltage does not drop under 53V. Most of the time it happens at night when there is very little load. Have quadruple checked wiring and comms cables and fuses etc. Have set the V mains disconnect higher to 200V on one system but still issue remains. Can have a look at system called Carreg Crescent for example. Our very experienced distributor for 12 years now also not sure what can cause this. Help would appreciated.

I'm trying to use Remote VEConfigure. I downloaded the settings file for my multiplus from the VRM portal (it saves it as a txt... which I rename to a rvsc file otherwise I cant even begin the upload).

I'm able to open the file, make changes, and then save changes. Saved changes reflect when I re-open the file.

I then go into VRM and upload the new rvsc file. It seems to start off OK, then I get this error:

An error occured during the configuration process.

Error Message: 'Wrong password'

Error: mk2vsc-36

How can I resolve this?

My boat has a bank of 8 house batteries (110-amp Victron Deep Cycle Gels), wired in series for 24 V, i.e. 4 sets of 2 batteries each.

I have a 24V 60W alternator on the main engine, which puts out about 28.5V 30A constant at cruising speed.

Question: can I use the alternator to charge my house battery bank when cruising, without danger of damaging the batteries? I'll be cruising for a month, as much as 8 hours a day.

Thanks in advance,

-David

Hi

Can someone please recommend me a Venus OS compatible USB to iso RS485 dongle?

Thanks,

Mihai

I recently bought a preowned boat and i noticed that the charger Centaur charger is connected to AGM consumer battery bank and also the lead acid start battery. Jumper setiting on charger is set to AGM.

Can the AGM charge mode damage the lead acid battery in any way? I just had to replace the start battery (4 years old) as it would not recieve chargning any more and i am wondering if the charger can have anything to do with the short life span.

Currently I have a BMV-712 mounted in my RV battery compartment. The display faces horizontal. I only receive the BT signal in the coach with my phone laying on the RV floor. I am thinking that I may be able to rotate the head unit to obtain a better signal inside the coach.

In which direction does the BT signal transmit from the BMV-712 ?

I just replaced my original battery combiner with the Victron Cyrix-Li-ct. I tied the small read lead to both my dashboard wire (AUX START) and to AM Solar's AMS Lithium Control Module v4.2 to the ALT + and - connectors.

Can someone explain to me how this relay is supposed to work? I have 3 typical scenerios: (1) vehicle running (class A motorcoach) with no solar, (2) shore power and (3) dry camping with plenty of solar.

Is this a "one-way" solenoid? Are both lithium batteris and chassis batteries affected in the above scenerios?

I've included the data sheet from Victron for your refereance.

Datasheet-Cyrix-Li-ion-230-A-EN.pdf

Hello, my MPPT 100/50 Controller won't turn on at all. I am setting up my electrical connection for my first solar system build in my camper. I have 200Ah of 12 volts (2x lifepo4 100ah 12v batteries ) connected to busbars with a 250amp fuse and a kill switch in between the positive line, and I have the shunt in between batteries and (-) busbar. After I did this, the victron Shunt started working properly, it records 13.28 volts. From the (-) busbar I have a 6 awg wire connected to the MPPT. Then, from (+) busbar I have a 6 awg wire connected to a 70 amp breaker (open) , then to the MPPT Controller. Then I proceeded to connect 4x 12v solar panels in series 170w each. Together they go up to 90v during peak sun. Negative wire from the solar panels connected directly to MPPT and positive wire I connected to a 30amp breaker (open) , then to the MPPT Controller. I have 13.28v reading right before the 70amp breaker. When I close the 70amp breaker so the MPPT can get a reading of the batteries, nothing happens. There are no lights. The battery wires have voltage, but for some reason the MPPT controller is not showing any sign of life. I did this process twice, leavigin the MPPT Controller disconnected for more that 5 minutes to "reset". After I reconnected everything again, following same steps, nothing happened again. There is no lights at all.

Hi all,

I have a 3 phase system using 3 x MultiPlus II.
I had loss of mains on one phase due to maintenance on the grid.

The hybrid system didn’t kick in. I had to turn off mains on three phases to simulate loss of mains for the hybrid system to work

Is there a setting to allow the system to run the back up loads when only one phase losers mains.

I have a BMV-700 and a Bluetooth VE direct smart dongle. I plugged the dongle into the BMV, and held the reset button; the dongle began alternately flashing the red/blue lights. I connected to the dongle with my iPhone using Victron Connect, and followed the prompts for updating the dongle firmware. I also connected my computer to the BMV with a USB/VE direct cable and updated the BMV's firmware. With the dongle plugged into the BMV, I saw both red and blue lights on solid. Using my iPhone's VC app I see the dongle appear, and I can connect to it, at which point the red light goes out. In the VC app I can see options about the dongle - change pin code, rename et cetera, but I cannot see any information about the BMV that the dongle is plugged into.

I reset the PIN on the dongle, made sure that all firmware was updated (including the VC app) and tried holding the dongle's button while unplugged, plugging it into the BMV, and repeating the setup process. I was never able to access anything more than the dongle's settings in VC.

I appreciate any suggestions or advice. The dongle was purchased used - perhaps it is faulty? The BMV was purchased new, and has never been used with a smart dongle before. I checked the BMV manual looking for any settings I needed to change to allow interfacing with the dongle, but I found none.

Hi there,

I have a new Phoenix 12/1200 inverter powering a 140 watt computer setup through a new Filax 2 transfer switch.

The inverter is connected to the priority source side of the Filax 2 and shore/mains power is connected to the alternative source side.

This works fine but I have noticed some odd quirks of this setup.

-Both power sources need to be connected and ON for the Filax to successfully begin feeeding power from the inverter.

-If the whole system is off (mains power disconnected, inverter off), after switching on the inverter, the filax will not allow current to flow from the inverter until the mains is on.

-Leaving the inverter on all the time fixes this issue, but has a 2 amp standby current draw.

-Reversing the setup works fine! Mains to Priority, Inverter to Alternative. Everything works perfectly.

So, i suspect the issue lies with the inverter/filax combintion. Perhaps the filax is too sensitive and detects a voltage/frequency drop of the inverter first startup and cuts out. The inverter runs 16mm2 power cables which are 1m long.

Oddly if i disconnect all loads from the inverter (monitors etc) the filax will successfully start without mains power connected, but after connecting loads carefully, it disconnects. Connecting mains power 'reassures' it that everything is ok and then all is fine and cut-in cut-out works perfectly.

The irony of this fault is after a full power down, you would need to steam back to port to connect to the mains, to reconnect your inverter.

Thoughts?

Just heard from my distributor the Cerbo wont be available in the US until June! Fingers crossed production ramps up.

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Ive inherited this inverter multiplus compact 12v 1200 va 50 amp which supplies power to my back up battery on my submersable pumps in my basement

we had a power cut and the back up didnt cut in and it was flashing red on the inverter, its now flashing orange on the charger light

can anyone tell me what i need to do to get it to charge my battery if the power goes off again im confused as to what lights should be on/flashing and do i use the charger only switch at anytime

I do not have good signal, a bar two bars. but not upload

data from memory. I have last firmware.some ideas?

[image]

Hi,

I am in a process of designing the basis of my solar system, and I have a question about ACvsDC coupling.

I am considering a setup where around 50% of the energy should be self-consumed immediately, with the rest charging the batteries or being sold back into the grid if the batteries are full (which may be often during sunny days).

I am considering Multi/Quattro as the basis of my system, with at least some of my capacity going via MPPT solar chargers directly into the batteries, to avoid any deadlock situations.


My question is - shall I just pump the whole capacity via the Victron MPPT solar chargers and avoid a separate AC inverter? Is there any additional strain on the batteries if they effectively share the bus via which the energy will be going through the inverter back to the appliances/the grid?

I am not sure if this is normal, so my question is to all of you that use mppt bluesolar charger. While the battery is connected to the charger, I can also measure similar voltage on the solar input terminals. This is regardless if solar panels are connected or not. So if voltage of the battery is 50V, on the PV terminals I can measure 50+ something volts also. Same is displayed in victron connect screen. Does your charger displays solar voltage > 0 during the night also? Shouldn't it be 0V during the night? Perhaps something got fried in mine :-/