Hey everyone,

I am running an off-grid system with a GX Device and an MPPT, BMV and Phoenix Inverter 12/800. I also have DC loads connected to the system. As long as the inverter is not running, the consumption values in VRM are perfectly valid, but as the inverter runs, the values measured are off, as the inverter power is just added ON TOP of the DC Load Power which already includes all the current drawn by the inverter.

Is there a way to configure the GX Device to ignore the AC Power measurements, as they are already included in the DC Load? If not: it'd be great to have an option in the menu that states that the inverter is run on the DC system. Otherwise I am unable to reliably log the system consumption...

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Hi All, my first time with Victron products and Solar Energy. Questions about Lynx Distributor. Considering that has 4 slots fused.

1) May I connect the whole system in One Lynx Distributor Unit?.
Example;
Slot 1: Multiplus-II 48/3000 (Fused)
Slot 2: SmartSolar MPPT 250/100 (Fused)
Slot 3: Lithium 48V Pylontech US3000 (Fused) (3 parallel modules connected with cable kit 120A/2000mm lenght)
Slot 4: Venus GX (Unfused as brings its own in-line Fuse)

2) Fuses sizing should be MEGA 125A for all 3 Slots? (i.e. Littlefuse MEGA 125A/58V for 48V)

3) Is there a minimum lenght for Cables of Slot 1 and Slot 2, I have available AWG2 35mm2 nominal cable (33,6mm2 actual section). For Slot 3 cable kit size came Pre-Fabricated.

Please if you see any safety issue advice, this is an Off-Grid system. 3000W Panels Array (4series x 2 strings). (SmarSolar is oversized for future expansion duplicating whole system)

Thank you,

Bye

Hi All, I have a camper that runs solar on the roof, and via a Smart DC DC Orion 24/24 - 17 charger in my truck camper. Currently these are not networked as I am driving along which does cause them to sometimes be in different charging states.

Posts on here have asked the question but have not been updated recently - when will the Orion DC DC chargers join the Victron Networked family?

I am very keen to have all devices working on the same charging algorithm. Is there a workaround with the Victron Dongle?

Does anyone know when these will be networkable?

Cheers

Troy

Hello,

I have setup a Smart Shunt as a DC Load meter in my RV setup. I basically want the Smart Shunt to report the current being used by the DC loads in the RV so that the MPPTs can compensate for it when they are charging the batteries. However, it doesn't seem to be working/reporting correctly. For instance, when I turn on DC loads (lights in this case), the amperage is reported in VRM as going to the general system, not DC loads (note in last picture that the DC meter reads 0.0 amps being used but 22-28w seem to be outflowing constantly). Is VRM working correctly?

Some details:

* Smart Shunt is configured as DC Meter (currently specified as General Loads in misc. settings)

* I'm using DVCC - SVS, SCS enabled.

* I have no way of tracking current in AC loads/sources in the VRM system - I'm looking to add at least another Smart Shunt on my inverter if I can get this working correctly.

* I have the "Has DC System" setting enabled in my GX unit (a Raspberry Pi running VenusOS Large in my case).

* I can see the DC System in the main VRM screen.

System configuration:

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Hello,

I have a question regarding the possibility of using an AC generator with an MPPT solar inverter.

So basically I have a wind power turbine, the generator is a 3 phases permanent magnet synchrone generator.

In order to have a DC voltage, I will use a diode bridge with a DC/DC converter to meet the requirement of DC input of the inverter.

Lets say I will use the Victron EasySolar-II GX (who handle a DC input between 38V - 66V) without battery, and I'm able with the diode bridge and the DC/DC converter to convert the voltage of the AC generator to a DC voltage that oscillate between 38V - 66V. Will the inverter be able to generate power and behave normally ?

I want to know too how the MPPT will work under those circumstances. Feel free to correct me if I'm mistaken, from what I understood, the MPPT algorithme changes the value of the voltage on the DC input in order to find and drag maximum power. In the system that I explained above, the source imposes the voltage I believe, how the MPPT algorithm will be able to find the maximum power point?

Feel free to ask more questions if I misexplain something.

Thanks in advance

Regards

Hi my DC system is not showing up in the VRM Dashboard.

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Under Advanced view, I can see the DC load?

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I still cannot understand, why Victron switch off the AC Output, if the Batterie has problem, but still the Grid is available?
My full house is connected to an 3-Phase system and the full house run over the 3 Multiplus. If the DC Bus has some Problem, the full House will switch off because of the Voltage Ripple or Voltage minimum. This can happen at the beginning of an system to see how it works with the batteries!

So maybe BMS will switch off the DC Voltage!
BUT if there is an AC Input available, why the Multiplus cannot switch to the AC-Mode and just switch to the passthrough mode?

So house is off in this situation and grid is available make no sense for me!

Thank you!

Best regards
Kevin

Hi All,

Just wondering if anyone else is seeing the same behaviour in VRM from their Multi RS?

It seems that whenever the Multi RS is charging the battery, from Solar or Mains or both, the charging power is being reported by both the Solar or Mains charger to VRM, but is also being shown as additional DC charging power, pressumably from the battery?

The figure seems to be consitently double the actual charging power, like VRM does not know how to subtract the power coming from the different elements of the Multi RS from the total power going to the battery, so is accounting for both as 'additional' DC charging power as well as individually.

System in question has a fairly large DC system so it is as important to account for that as the AC system, removing the DC system from VRM is not really practical.

Up to now the system had been getting limited Solar or AC charging because UK solar sucks in winter and Generator support has only recently been added, so I had been putting the discrepancy down to measurement tollerances to now.

Now @WKirby has helped out with the generator settings for the Multi RS, i am pretty certain that this must be some kind of reporting bug, interested if you have seen this with your system?

Batteries are Pylontech US5000 which are selected as the battery monitor, as they are pylons DVCC is automatically forced on with SVS & STS forced off, not really sure what else to try to get the reporting to be vaguely accurate, any suggestions welcome

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Hi, I have a grid tied system with an 8kw Quatro and a 5kW SMA. The SMA is running at it's max with PV. I also have 40kW of lithium storage. I need 10kW more solar power and would like to add this via panels and charge controller.

1. Is there any limit to consider when adding a DC system vie panels and charge controller to the victron?

2. Where can I find information on the Victron site on how to configure such setup once installed?

For our caravan I am looking to upgrade/optimise the 12V system.

At the moment there is a 90Ah 12V lead-acid battery which when we are off-grid runs the lights and 12V outlet to charge phones/tablets.

When plugged in the battery is charged from the mains 230V supply using a Reich C-Go 20A charger. This charger in turn, also acts as an isolator for the 12V coming from the car. So when the caravan is plugged in the car and the engine is running the caravan battery is also charged from the car.

I want to replace the lead-acid battery for a LiFePO4 battery but I need to limit the current to protect the car and wiring between the car battery and the caravan. Ideally I want to limit the current from the car to 10A because of the small gauge wires that re typically used in cars and caravans in Europe.

My first idea was to take a Victron Orion smart DC-DC converter which basically does everything I want except two things. The most important thing is that there is no way to limit the current. The smallest version is 18A DC which is to much for my application. The second disappointment is that it doesn't have VE smart networking. Victron sadly never gives out information on when or even if devices get an update.

The Victron 25A Buck-Boost converter does have the current limiting function that I seek but it is more than twice the price of the Orion. It also lacks VE smart networking and you need to use an ancient Windows application to change the settings.

What would be a good and cost effective solution to my wishes? I don't mind spending money but I don't want to overpay for equipment that is half finished.

I would really like to see that Victron takes one of their smart solar MPPT chargers and create a truly smart DC-DC converter from it. I looked into using a MPPT charger for my application but I quickly learned that it is a bad idea because of how the MPPT system works.

I am looking to install a Victron system on my RV that will be using a third-party DC-DC charger to charge 48v house batteries from the vehicle's 12v alternator. If I were to connect this charger through a dedicated BMV battery monitor (with a second one for the system's DC loads), is there any way to have one show up as an "alternator" input on the CCGX display screen?

I know I could connect it through the BMV-700 and presumably just have the CCGX show it as power flowing from the "DC loads" box to the battery. My primary concern is ease-of-use for the end user, so I would greatly appreciate any way to configure thte CCGX for this display.

I am currently planning a system upgrade of my 2022 Valor 37v13 from basic solar to a complete system that can run all loads (120V and 12V). Considering going 24V on the DIY batteries but I am struggling to elegantly solve for high current 12V loads: balancer jack pump slide motors, and genny start. Jack pump states 50-100A fuse and the gen is typically 300 CA.

Any recommendations or experience?

Hello,

System:

3x Multiplus 2 - 10KVA

2x MPPT 450/100 controllers

16x 5KWH batteries Pylontec

I have ESS setup to a SOC of 70% topup limit from the grid at off-peak energy time. However during the day when no one is home the PV output is greater than the load of the house. However the batteries are not being charged beyond 70% - I've tried adjusting this limit when I notice this occurring but it still had no effect.

I did take a video of the system but in general there was atleast 100watts of excess power not being pushed to batteries.

Anyone suggest anything?

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Hello,

I have a 3-phase system 3x5kVA MPII, 1xMPPT, 2xFronius Symo, BMZ lion battery 48V with BMS, everything is controlled by Cerbo + ESS assistant. Everything has current FW, AC Coupled feed in excess - ON, DC Coupled feed in excess - OFF. Now I canceled home UPS APC (for home server, CCTV...) installed Phoenix inverter and SmartShunt. I turned it on in Settings - System - Has DC system ON. I set the SmartShunt as DC Loads. Unfortunately, I have two problems.

The first problem - the DC loads field does not appear on the display. It only appears immediately after a restart, or on the display that I'm not using.

Normal view ( No icon DC Power displayed ):

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Display after restart Cerbo: (as soon as ESS assistant starts, the DC loads field disappears)

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Another screen I don't use, here is the DC loas to see:

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Would it be possible to modify the FW to show the DC load on the "primary" screen like here?

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The second problem - if the battery is charged, CCL 0A. When I turn on the DC load, the battery discharges and micro-cycles (100% -> 97% -> 100%...). Unfortunately, the MPPT does not supply any power (to balance the draw from the battery), the Symo supplies power to the grid. Is this normal behavior? Shouldn't the MMPT regulator supply the same power as the Phoenix draws so that the battery is not constantly being discharged and charged? It can be seen in the pictures above.

Thank you for the responses, or for the advice.

Ondra