My BlueSolar with bluetoooth dongle is showing a higher battery voltage around .3v than actual. I have checked this with 2 multimeters that both show the same as my 712 smart bmv. I have checked at the battery connection point. It is updated to firmware v1.46

We are not on the boat and nothing much is running, we come back and it is alarming and ask the power is off. I have to turn it off and on again to reset it

Does anyone know under what conditions a modbus request would eventually be rejected by the CCGX? Perhaps too many requests per minute?? if so what is the limit.

Hi,

I have two Questions created already where i have discussed various issues regarding my solution. See here :

https://community.victronenergy.com/questions/41291/multiplus-ii-disable-feed-back-entirely-possible.html and https://community.victronenergy.com/questions/42279/lom-detection-when-feed-in-disabled-why.html?childToView=42916#comment-42916

I am sorry that i now create another issue but i am not confident that what i want can indeed be done with the chosen HW/solution.

Background:

I am located in Denmark and wish to buy Victron products to make a hybrid/off-grid system where "All" i want is that i can pull/mix power from grid when i don't have battery/solar but NEVER feedback to the grid, just one little bit will get me into trouble. I assume feed-back and feed-in are the same things right ? The most important thing for me is to not feedback to grid and be able to pull and use the produced energy myself. I think this is called self consumption.

I read on https://www.victronenergy.com/live/ve.bus:grid-codes-and-loss-of-mains-detection :

Q4: I use ESS, but have disabled feed-back, is a grid-code still required?A: Yes, also in this case LOM is required to make for a safe and also local regulations compliant system. Running ESS with disabled-feed-back is still not the same as using a Multi in its default configuration without ESS.

I don't understand why do i need LOM for this ? Can somebody explain ?

Regarding my usage :
We (our family) have roughly 16-20kw consumption per day and in total 6000-7000kW yearly. I will also have a powerwall build myself using LiFePo4 batteries (48v) roughly a 10-15kwh.

System i have in mind :

1 x Multiplus II 5000/48
2 x SmartSolar 250/60
1 x Venus GX

I have 21pcs of 310W panels (https://bit.ly/2P1GL9O) so i was thinking to place 10 on each side of the roof meaning i would do 2 x 5 panels in series so i would have 200V for 5 panels then parallel the 2 strings and one string is 10A so 200V 20A for one charge controller. I think that is ok but that means I need to use the 250/60 solar charger model which is more expensive and i need two of those. Please correct if i am wrong.

I have 100% stable grid connection and since the Multiplus II can handle a big load in by pass i can practically run the whole house on the AC out from the inverter. Please correct if i am wrong.

Questions:

1. I want to know if the above system is feasible ? Are there any other Victron HW that i also need which is not on my list above ?
2. Can I use the system in such a way that i NEVER feed-in/feeback to grid in no circumstance but at the same time i can consume from the grid when no solar or battery is available ?
3. If 2 is possible can the system be programmed in such a way that when the load is too big for solar alone or solar/battery combined to also mix in grid power BUT still without feed-in/feedback to the grid ?
4. If 2 and 3 is feasible what do i need ? Do i need ESS or ignore AC input or both if that's possible ? How would one configure ?

How many 100w solar panels can I hook up to a 100/20 MPPT SCC for 12v system?

Hi Folks,

Noticed that the device name feature on V.E. Direct devices BMV702 & MPPT 75/50 is not being applied to the device , instead it appears to be staying with the dongle and transferring to the next device used by the masking any label that is associated with the device.

Looks like a firmware bug. I have confirmed that I am saving the changes. I have reconnected the BTD several times and tested it on other V.E. Direct devices , same issue.

Any idea folks & Victron team?

I currently have a Voctron MPPT 100/20 with four 100 Watt solar panels. I have four more I would like to hook up. Can the 100/20 handle that and how? Or do I need to get a larger one? Thanks in advance!

Edit* it's a 12v system. We don't get good sun. Really just want to know if I CAN put 8 panels on that controller and if I can, how?

I have a Victron Multiplus 12/3000/120-50 120V that is only a couple of months old. Worked perfectly until I tried to turn it on via the Digital Multi Control. No lights. No sound. I have 300 Ah of Battle Born LiFePO4 batteries that are fully charged and everything on the DC side works perfectly. Is there a checklist for troubleshooting a totally dead unit? I don't have a Mk3USB and I was wondering if getting one and connecting the Multiplus to a computer will it even show anything if it is totally dead? Thanks for the help!

I'm struggling to find any combination of panels that work with the EasySolar 1600 model that come close to the 1200W it's capable of producing. I want to use Canadian Solar 410w Panels, (preferably three) but the voltage with any more than two panels is too high for the MPPT element, and the wattage is lower than I'd hope. Is is possible to upgrade/change the MPPT controller, or am I doing my calculations wrong? Thanks.

I have a grid-tied system intended as back-up system including excess solar feed in into grid. Some particulars:

Solar panels 2,4 kwP

Smartsolar MPPT 150-100

Multigrid II 48/3000/35/32 230V

ColorControl GX

4x12V-136Ah lead acid batteries (third party).

ESS is applicable with mode "keep batteries charged" and "feed-in exces solarcharger power". Also absorption voltage and float voltage according manufacturer's specs.

This is working well except that I noted that during daytime (solar available; inverted to 230V and used for load and feed-in) the batteries are being discharged in small amounts as well. It looks like the more solar inverted (i.e. fan on multigrid) the higher the discharge rate of the batteries will be (max approx 100W). The result is that at the end of the day SOC of the batteries has been lowered and overnight it is being kept steady (including floatvoltage is maintained). So each day the SOC of the batteries is lower (approx 7-8%). For this I have two (2) questions:

1) How are the batteries supposed to be charged again? I assume "keep batteries charged" means on or up to SOC 100% (for back-up reasons).

2) Each day my batteries have lower SOC but the voltage is steady floatvoltage. How does this effect the start of the charge-sequence as according to manual switch float-to-bulk will be at 1.3V below float voltage? And eventually will it recognise the dynamic cut-off as float voltage is kept continious?

At this moment the only option I know is to reset the system in order to start Multigrid in bulk. For now this is okay to reset the system once every couple of days. But when I leave home for longer periods and I am not able to reset?

I would appreciate some help and/or clarification with this. Thanks in advance.

The VE bus system cannot be seen on the device list and hasn’t been seen for at least 24 hours now. What do I do? The firmware is up to date.

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I would like to reduce the charging power by switching on a load when more than 50% SOC
That's why I've invited two assistants. If over 53. V, turn on the relay. If below 53.5 relays off. But the relay won't switch. Is there another command?

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Thank you for your answer.

SoC Charger MPPT Blue Solar

I just bought the Venus GX to replace the VE.Bus to NMEA2000 interface and the VE.Direct to NMEA2000 interface in my system for my yacht and to be able to use VRM. I understand how to connect the Venus GX to internet via ethernet, the Quattro 24/8000 via VE.Bus and the BMV 700 via VE.Direct to the Venus GX. I have a Victron DC Link box for connecting the batteries with the various DC loads. Currently the shunt in the DC Link box is connected to the BMV 700. In the manual of the Venus GX/CCGX it states that the DC Link box should be connected to the Venus GX with a RJ12 cable. The only connection with RJ12 is the digital input connection of the VEnus GX. I am wondering will this work? And what is the benefit of connecting the DC Link box directly to the Venus GX? Will the DC Link box show up as a device on VRM?

I recently bought a new washing machine and the user manual indicated the possibility of a remote start using an energy manager that supports the EEBus protocol.

https://www.eebus.org/en/

If you google the name of the protocol, you will also find information from a competitor of Victron Energy who already supports EEBus. But neither in this forum nor with Google could I find any information related to Victron Energy and EEBus. So I wonder if I'm actually the first to be interested in it. Or are there already any plans to support the EEBus protocol in Victron Energy products?

Cheers
Erik

Hi, I'm looking to add another 12/2000/80 to my setup to increase my output wattage in order to remove propane and add induction hob and convection oven, but not sure if I can as I have used both the RJ45 ports on what would be the master Multiplus, so nothing left to connect to what would be the slave Multiplus. Will I just have to sell the 12/200/80 and get a 12/3000/120 Multiplus?

Hope someone can think of something I haven't...

Mike

I have turned on MQTT on my CCGX and I am able to subscribe and get messages. I want to be able to change the generator start/stop rules which are based on the Battery state of charge. They are current at 50% and 70% but I want to be changing them programmatically depending on forecasts. Does anyone know the topic to publish to so these values could be changed?

Good day

I think this is quite a common point of discussion, but I need just need some confirmation that I understand correctly.

This installation is as follows:

• 2 x Multiplus II 5kva 48V units set up in single phase parallel
• CCGX unit
• 4x Pylontech US3000 modules
• No solar array installed as yet, purely back-up.

Setup and settings done exactly as per https://www.victronenergy.com/live/battery_compatibility:pylontech_phantom

System was commissioned today and seems to function normally, except for a "Battery monitor (512)- High voltage" alarm.

Battery is at 89% SOC with voltage at 51.81V

Batteries were reasonably discharged (66% SOC) when turning on the system for the first time, so it stands to reason that they might have been standing for quite some time before we received them.

Am I correct in saying that this is a cell balancing issue, and should self-rectify? Or is there something I am missing?

Thank you in advance

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When turning on (tried bouth "ON" and Charger only") it is no response at all. 220 v input and the feeder cable is OK and I have pushed the red circuit breaker several times. New 150 Ah AGM Battery. No response at all!

I am trying to find some energy use log files with at minimum hourly data. I do not need charge data but usage for a 35 -55 foot yacht, with people on board. Liveaboard, or cruizing is fine.

Data will be used in modeling software and will be completely anonymous.

System has worked well for 5 years in off grid setup. Symptom is a loud hum with rapid flickering of LED lighting. After switching all off worked again for a short period but reverted to loud hum. Finally the Multiplus shut down totally.

Hi

I have programmed my BMV 700 in relay mode "CHGR" and with setting 16 at 55% SOC and relay 17 setting with 85% SOC. However, I notice while monitoring my Venus in the Victron app that the BMV relay always closes when SOC reaches 45% - not the 55% I programmed. What am I missing here? Is there a math difference I am missing?

Hi, I have a client who wants me to install a generator/Dc monitoring system without any Multiplus or Quattro in the mix etc, at this time. but one will be added latter (Stage two).

So can I install a ET340 and connect it via its RS485 to USB cable directly to the CCGX and then a BMV-712 to monitor the Victron battery chargers via the DC through the BMV shunt and ve direct connection back to the CCGX, and the incoming Generator voltages and power through the ET340.

Generator autostart will also be added based on battery voltage or SOC

We want to see the incoming Gewnerator voltages and power and yes the outgoing load on the CCGX will be the same as there is no inverter at this time,and some off the flow charts maybe incorrect as well, (we can live with that).

Then connect via the VRM via the internet to monitor the Generator system voltages including voltage sage and power usage using the vrm logging.

This is there stage one for monitoring the generator for the moment when its running

I am hopping that for the moment we can leave the inverter/charge out of the system.

So is the above possible.

Hi,

I have a question regarding inverter (Quattro) sizing. If I know that the 10kVA version would suit my needs but the peak power required would be close to its maximum (I would say at around 85-90%), would it make sense to get the 15kVA version? Would it increase the unit useful life?

Good Day I have a EasySollar 5 KVA and 3 pylontech batteries I keep on getting an alarm Pylontech Battery Alarm Internal failure any suggestions please my system is only 2 months old. Kind Regards Leon

Good evening Victron community

I moved marinas today and when I plugged into shore power I find that my batteries are not charging. Further, there’s no power (230v AC) getting to my boiler from the EasyPlus and the 230v sockets on the boat appear to be getting their power via the EasyPlus’s inverter.

I have a VE 3600 watt auto isolation transformer whose ON and 230v LEDs are lit.

There’s a breaker between the isolation transformer and the EasyPlus: it’s LED is lit (input side).

There are four 12v indicator bulbs on my boat’s main switch panel: shore power, boiler, sockets, and charger. These are fed from four 230v / 12v relays whose inputs come from the EasyPlus. With shore power off, only the sockets indicator bulb is lit (presumably from the inverter). With shore power switched on, the shore power indicator bulb also comes on but the boiler and charger bulbs remain unlit.

When I connect shore power to the EasyPlus (by switching the breaker), the shore power relay triggers but occasionally it disengages and then re-engages (every 5 minutes or so).

My initial thought was a problem with the shore power, despite the isolation transformer and the breaker looking good. So I moved the shore power lead to a different pontoon pedestal but I am getting the same results.

Any guidance on what to check next will be much appreciated.

Thank you

Allan Fraser

I have a bmv-712 hooked up to a 100ah battleborn in my RV. BMV settings are as per the battleborn recommendations and I have all negative loads wired to the load side of the shunt. There is only 1 2/0 short cable running to the battery negative. I have a shore power charger and Victron mppt coming in on the positive side. The BMV will only display outgoing negative amp loads and will only display 0 amps when charging. I must manually sync to 100 once the battery has fully charged. Has anyone experienced this issue? I'm pretty sure I have a defective unit.

Under load

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Plugged in to shore power and charging

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Wir setzen qCells - Q.Peak- G4.1 305 PV Module ein. 305 W P // 9,84 A I-SC // 40,05 V V-OC // 9,35 A I-MPP // 32,62 V V-MPP// 1000 (IEC) V V-SYS

Unser Victron Partner hat empfohlen max 15 Module in 3 Gruppen zu 5 an den 250/100 anzuschließen. Wir haben jeweils 17 Module angeschlossen - (2*6 und 1*5) Die maximale Leistung betrug selbst bei idealem Sonnenstand dann aber statt der nominalen 5185 W gerade mal 2800 W. Die Module werden gruppenweise verbunden und dann in einem Anschlusskasten zusammengeführt und von diesem etwa 20 m mit einem 15 mm Kabel zum 250/100 geführt - Leitungsverluste können wir also ebenfalls ausschließen. Wir haben nun eine weitere Gruppe mit weiteren 6 Modulen angeschlossen und kommen nun auf Produktionsleistung von 4400 W, im Idealfall, trotzdem die Nennleistung ja eigentlich 7015 W sind(was der 250/100 ja nicht mehr verwandeln könnte). Nun die Frage - was ist falsch ? bzw. w i e müssten wir die Module richtige anordnen/kombinieren um optimaleErgebnisse zu erzielen?

Hello,

I'm using an Victron Controller Charger MPPT 75|10 and I'm exploring the product.

Instead of connecting the Bluesolar to an Solar Panel, I'm connecting to a DC source of 24V. I've limited the charging current to 1A. The battery is charging, but I ca't make sense about the readings I'm getting.

I turned off the Load Outpu, so I was expecting to see same value of current provided by the source (Solar) in the Battery. However what I'm actually seeing is hard to explain, the current that is being supplied to the battery is actually far more superior then what is being provided by the solar.

Can someone make sense of this dark magic ? :)

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I'm in the process of changing my Lead Batteries to Lithium ( SolarMD ) on my Multiplus ( includes venus GX ) setup. The system is only used for backup and not part of an ESS system. Batteries will only be charged by grid. The questions I have is 1. Can you limit the charge current as you can with lead batteries in the charger section of the Veconfig application? - my understanding is than the Canbus just sets the Max charge/ Max Discharge currents 2. Can you limit charge to a SOC value - eg 90% to maximise battery life