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Assistant progamable relay (012C) with battery temp sensor


I need activate a auxiliary relay K2 in a quattro 24/5000/120 100-100 firmware 433, with a battery temp sensor , in the programable relay assistant, I don't find this option, is it possible do it with other metod ?

Enrique Marquez asked

0 Answers

Multiplus 'Ignore AC Input' Assistant - How can I override it on demand?

I have now programmed the Multiplus with the assistants as shown in the picture. Everything works fine


. Only one problem has arisen. If i set the "only charger" function on the digital multicontroll and shore power is connected, it will not start. The blue LED lights up "Mains on". What is missing?

Ship Tyr asked
Mark commented ·

3 Answers

Documentation for Victron Connect

@Guy Stewart (Victron Community Manager)

Hi Guy, Suggest at Paragraph 3.1 of the Victron Connect manual that you add the limitation for the VEBus BMS assistant... correction to my last version.

This edit update - the later info clearly identifies the VEBus BMS assistant under the lithium battery 'wizard' - as a limitation; note however I did not want the wizard as I knew what parameters I wanted.

Is this limitation for ALL assistants?

Cheers Mike

Michael Riley asked
Michael Riley edited ·

0 Answers

AC Current sensor power too high


I have an AC current sensor monitoring the Solar power from my inverter but the reading is always too high. The inverter is 6KW so I have configured the AC Current Sensor DIP switches to 7kW. When its full sun outside the inverted display is reporting around 6K but the remote console via the assistant is reporting around 7.4kW. This error is consistently around 20% too high, ie, at 1k of generated solar is reported at 1.2K.

I have a Multiplus II 5kW, Venus GX and ET112 energy meter. I can even see how the algorithm works, assume my export is currently 0W, batteries are fully charged, the AC sensor is reporting 2K solar generation, it does a simple calculation that I'm using what's left over - ie 2kW of AC loads in my house. But I'm actually not and I've tested this, during a sunny day my inverter reported 6kW, the AC current sensor reported 7.4KW and loads were 2.5K, I turned every MCB off and the AC loads dropped to about 2KW, I then turned the inverter off and Solar plus AC loads dropped to 0W. I can see each time the sun comes out my Solar PV on the Remote console jumps up along with my AC loads jump up.

I've tried:

Rewiring it (no change)

Moving other AC wires away from the outside of current sensing loop to avoid interference (no change)

Changing the input from AUX to Temp Sens (no change).

Changing the DIP switches to a lower power setting as the sun was setting - this reduced the level of error and DIP switch 2 seemed to be all or nothing.

I've concluded that the AC current sensor is faulty - feel free to suggest otherwise.

Based on the fiddling around I've done, I think that if the assistant's expected full power could be changed from 7.5KW to 6KW then it would solve my problem or at least make it more accurate.

Sorry this is a bit long winded leads me to the question:

Is there a way I can edit the 7.5KW value in the AC Current Sensor assistant?



nicd asked
nicd edited ·

0 Answers

Can the PV inverter support assistant be configured to start ramping down at 57.6v instead of 54v?

At the moment the absdorption saying is 57.6v for absorption but the PV inverter support assistant ramps down Fronius when the batteries are at 54v so it takes far too long to charge the batteries under solar. When the generator is on, it will charge at 180amps until 57.6v then go into absorption then float as it's supposed to but when it's under solar it will charge at 180amps to 54v then ramp down considerably so even though the charger wants the power the PV inverter assistant won't allow it. Can the setings be changed in the PV inverter support assistant to chasnge it from 54v to 57.6 as per the charger setting?

Daren Connor asked
Porcini edited ·

1 Answer

Programmable relay when inverting

Hi everyone, can anyone help with the setup of an assistant, I essentially want a relay to close when the inverter is being used and open when it is not. I see there is a charge state option, and I can select "not charging" but I feel like there must be a better way. Can anyone share some light on this?

EwaldErasmus asked
Daniël Boekel (Victron Energy Staff) answered ·

1 Answer

AC Out 2 form Mains for either of 2 conditions (Not getting it!)

I have a Multiplus 24/5000/120 that is setup with a 300 AH LiFePO4 and a BMS with separate contacts for high and low battery. works good. Then I have AC Out 2 relay on when mains is connected. Works good. Then I have ignore AC In when Aux2 is open. works good. Last is to run on mains when load is over 4000 watts. does not work=(. It switches to over to mains for about 1 to 2 seconds and then back to inverter and over loads, shuts down power, over loads, shut down power and just keeps cycling. Been trying to get this going for about a month now. What am I missing here?

As I under stand, If I enter both conditions in the same assistant, it's treated as an AND statement where both conditions mut be true before the command is carried out. If I separate the 2 conditions in 2 separate assistants, it treated as an OR. Is this correct? Regardless, I tried both ways with no success.

What I'm trying to do is set it up as solar priority first until the battery runs almost out. Then connect to the grid when the BMV700 closes the relay and starts the charging up to about 20% SOC and switches back to inverter for power. When I get home from work, I would like to be able to plug in car charger on AC Out 2 and have the inverter switch over to mains when the watts drawn from AC Out 2 are at 4000 or more.



bruce32466 asked
Daniël Boekel (Victron Energy Staff) answered ·

3 Answers

Where do I start setting up victron devices?

Setting figures/numbers please required for my bmv-712 & mppt smart controller 100/30 setup....complete novice. I have 2x 160w solar panels, 2x varta la95 agm batteries, bmv-712 & victron mppt smart controller 100/30..Thank you and wait in anticipation.

vee42 asked
DayAndNight answered ·

2 Answers

Can I change the Quattro AC OUT 2 Time delay?

Is it possible to change the delay which it takes for AC out 2 to go live?

I have contactors which are being driven by AC OUT 2, but when the grid or generator input is live (after a mains failure or return) it takes around 2 and a half minutes for AC2 to go live, and hence close the contactors... Is there any way to change this to 30 seconds for instance?

EwaldErasmus asked
Harold answered ·

1 Answer

3 phase Multiplus 24V/3000/70-16 problem with ignore AC


I have 3 Multiplus 24V/3000/70-16 configured as 3 Phase System, all are switched in a group. Firmware Version is 2612430 on all 3 ones.

I tried VS and the assistent to do not ignore AC input when the loads are higher than 2400W for 5 seconds. This works only for L1. When the loads are higher than 2400W on L2 or L3 the system does not switch to AC input. I tried now for 2 days, an i can´t figure it out. Maybe i am to stupid :-(.

Can somebody help me.

Tank you very much

Iceman24 asked
Iceman24 edited ·

2 Answers

Programmable relay - AC input

Hi. I am trying to use the relay K2 to drive a contactor based on SOC. I would like the relay to also switch on based on any AC input but it isn't switching on when AC is available and the SOC is below 80%. It will only switch on when the battery has charged to 80%.



robert6569 asked
Paul B edited ·

1 Answer

Lithium Assistant - Charge Settings

I am using the output from my LiFePO4 BMS to indicate when charging is complete. It is set to force the Quattro into Float and set the SOC to 100%.

I always triggers the charger to float but doesn't set the SOC to 100%

Occasionally the Quattro enters Float well before the trigger from the batteries internal BMS.

It does this even though the Charge voltage (13.2V) and the Tail current parameters (4%) haven't been achieved.

Something strange is going on, any help will be appreciated, ta Tony

Tony C asked
Paul B commented ·

0 Answers

SOC VE.BUS vs SOC (BMV / GX) for VE.Bus assistants


When programming my assitant rules, using SOC, must SOC of the VE.BUS be configured (via VEconfig)?

Or will it use SOC from the system CCGX (BMV)?

If I switch on SOC in the VE.Bus, I dont see SOC in the graph in VRM, is this correct?

Harold asked
Daniël Boekel (Victron Energy Staff) answered ·

1 Answer

Three phase set up - Quattro 48V/5000VA/70A-100/100-S/230V VE. Bus Inverter/Charger plus two MultiPlus 48V/3000VA/35A-50/230V VE.Bus Inverter/Charger


Can I use the following connected in a three-phase set up: -

  1. One - Three phase set up - Quattro 48V/5000VA/70A-100/100-S/230V VE. Bus Inverter/Charger plus
  2. Two - MultiPlus 48V/3000VA/35A-50/230V VE.Bus Inverter/Charger

If so how would I go about it?

Abraham Munene asked
Alexandra commented ·

2 Answers

Drive Relay when Quatro in Inverter mode

Is it possible to toggle relays on and off only when Quatro is in inverter mode only.

for example toggle relay off during time delay in switching between AC IN-1 and AC IN-2

Kind Regards

Ben :)

handy asked
Matthias Lange commented ·

2 Answers

Solar primary source and AC as backup with MultiPlus

Hi to everyone. We have problems configuring the MultiPlus using the VE Config.

We want the MultiPlus use the solar power from the batteries and when SOC drops below certain percentage (50%), draw power from the AC-in. Then, when batterias are charged, disconnect the AC-in and get back to solar power as a primary source.

We have been configuring it using the VE Config and three assitant (2 programmable relay and a use of the general flag), but either way the MultiPlus still are using the power from AC-in ("mains on" light on). We have gone to configure it to load the configuration, the MultiPlus get restarted but it keeps the mains on, then we try again reloading the configuration and the MultiPlus change to inverter mode, but the client call us phew days later because the MultiPlus change back to "mains on".

We don't know if the assitants what we are using are right. If you need to know, the installed system use a BlueSolar controller to charge the batteries with 9 photovoltaic panels. There is no communication device like a Color Control or VBM between the MultiPlus and the BlueSolar.

We had been attached the settings of each assistant. The internal battery monitor is actived in the MultiPlus and we have been careful sending the configurations to the MultiPlus.

Any help wil be appreciate!




Green Gear Energy asked
Richard Mori commented ·

2 Answers

Please Assit me with setting up Correct Assistant for my Multi2

Good day

Can someone please assist me to set up the correct Assistants in Ve Config

i have a multi2, mppt 250/100, ccgx, 240ahr agm 48v batterries for load shedding 2-3hrs at a time.

I am not fimiliar with all the assistants in ve confg.

my goal is to use all the sun i can (4300w pv) on my roof through day loads on ac out. and if heavy load comes allong i want the multi to use ac-in for heavier loads than sun can provide.

batteries must only be kept for backup and i dont want to export at all.

I have tried a few assistants but dont seem to be getting it right at all.

PDJacobs asked
Alexandra commented ·

2 Answers

Ve Configure 3 assistant to manage AC input on ESS self consumption


I have a Solar System using two Quattros 5kW, a Solar Charger 250V/100A. Inverters are connected to main AC from grid.

We want to use first Self-Consumption Hub-1 to keep batteries charge and having solar with grid to support in day time.

We need to know what type of assistant to use in order to use batteries for night time let's say from 18:00 to 6:00 and next day both solar charger and grid will recharge batteries.

Also we need to have another assistant to handle to event of reconnect grid to recharge battery bank in the case batteries are reaching low state of charge over the night.


dgmar_ni asked
Alexandra answered ·

1 Answer

PV Inverter Assistant - unbalanced PV


In the PV Inverter Assistant it says 'Each phase must have the same solar power installed'

So what happens if it is not balanced? If the 1:1 rule is adhered to on each phase will it be ok?


Stevo07 asked
Stevo07 commented ·

0 Answers

Quattro Lithium BMS assistant -Inconsistent

I have configured the BMS assistant as a single wire that triggers on High

And the action to be "Set to Float" and the SOC to 100%.

Well it always sets the charger to Float (Good) but only sometime does the SOC change to 100% (Not Good).

Anybody got an idea,,,,. Its not the end of the world but it is something I don't understand.

Any advice will be appreciated, Tony

Tony C asked

0 Answers

Multiplus assistant to turn charger off with low temp for Lithium battery bank.

I have Multiplus 3000, Venus GX, BMV712 and Lithium Battery Bank. Is it possible to use temp from BMV712 to turn off charger with low temp to help protect Lithium battery?

treejohnny asked
treejohnny commented ·

4 Answers

ACOut2 Relay Strange behaviour on brief power cut with assistant.

I think I might be doing something wrong but I've seen some strange behavior with my ACOut2 Relay. I have an assistant that disengages the ACOut2 relay if ACIn2 (Grid) fails. Now you might wonder why because it's the default behavior anyway. ACIn1 is my Generator Input and when the Generator runs I want ACOut2 also to be disconnected. The Generator ONLY runs when there is no Grid power so the logic seems right. It's also a manual start generator so I decide when to power it up (usually only after very long outages).

It all works perfectly except it 'looks' like in a very specific situation it does not work at all.

Here is the scenario: We have somewhat unstable power where I live, every now and then we have a very brief power cut and then it goes back to Grid power. My Quattro detects this brief power cut and switches to Inverting Mode. Soon afterwards the Quattro switches back to Grid power.

I have my gas stove connected to ACOut2 so I can see if the clock goes off or starts flashing '12:00' after a proper power failure but this brief cut it doesn't, meaning the ACOut2 Relay assistant does not disable the relay when the brief power cut is detected.

My two assistants logic states (and also in this order):

Disable ACOutRelay2 when ACIn2 (Grid) Is Not Available for 0s.

Enable ACOutRelay2 when ACIn2 (Grid) Is Available for 30s.

Here is my question:
Is there a time delay that an Assistant is triggered? Could the brief power cut be too short for the Assistant to run but be long enough for the Inverter to kick in and run from batteries? The reason I ask is that when in a high load situation with my Pool Pump, Geysers etc. running is around 6800W we had such a brief power cut and the system started to give overload warnings. Checking VRM it 'looks' like everything on ACOut1 and ACOut2 was powered from the batteries for a good couple of minutes and then the load on ACOut2 dropped off somehow. Is this at all possible? Should the Assistant not trigger at the same time the Inverter sees a power failure?


Ingo asked
Ingo commented ·

1 Answer

MultiPlus 1600 doesn't show life after large load

My Multiplus Compact 1600vA does not charge or invert anymore. It used to work fine until I gave it a large current to digest (2kw, I know it only handles 1.2 kw). When I gave it this large current, the shore power was not connected, I had 13.5V in my 400Ah Lifepo4's. As expected I saw the alarm light blinking and within 15 seconds the inverter shut down. After this, the inverter only showed signs of life (passing shore power through) when I plugged in the shore power. I tried and checked some things and eventually decided to delete the Ve.bus bms assistant in Ve.config, to reset it. After this, the inverter doesn't want to turn on anymore. It only shows life when I connect the AC in. For 1 second all three LED's turn on (inverter, charger and alarm LED).

My specs:

Multiplus compact 1600vA

Ve.bus bms with the mains detector (already tried it without the mains detector in between, no results)

Victron 400Ah Lifepo4

What I tried:

1. I checked all my fuses. Cables to the multiplus read 13V+

2. Disconnected AC in and AC out.

3. Check the VE.Config, charging mode is enabled. Ac input current is 16A

4. Delete VE.Bus bms assistant in VE.Config.

What could it be?

M Asscheman asked
M Asscheman edited ·

3 Answers

Quattro BMS Assistant

Just set up the Quattro Lithium BMS assistant with the following selections:

=The BMS has one contact that switches only on a high cell condition

= The battery is full when the Temperature sense input = CLOSE

=Force to FLOAT and Set SOC to 100% when battery Full

Closing the contact did set the charger to Float and the SOC to 100%. However when the contact was opened the charger did not revert to bulk/absorption it stayed in FLOAT

Change the action to "Disable Charger" and it worked as expected, toggling between charging and disabled in sync with the BMS relay contact.

My preference is to force the charger to Float rather that to disable it.

Any advice will be appreciated

Tony C asked
WKirby commented ·

2 Answers

Old Firmware for 19 Chip. I have installed the 209 version

I have loaded the 209 firmware version on a 48/5000 Multi. None of the assistants will work, they all say they need a newer version of firmware. I need to run ESS or Hub1 so that I can use the batteries more.

John Silver asked
Daniël Boekel (Victron Energy Staff) answered ·

1 Answer

Multiplus II Settings to not charge from grid

Hi Community,

I am currently testing a recent installation. I am using the Multiplus II. The image below outlines the setup.


When the grid is connected it immediately begins to charge the battery from the grid in AC input . I only want the battery to be charged when the PV inverter is producing excess electricity . The excess will can then be exported to the grid once batteries are charged similar operation for the charge controller. Can someome please guide me with the settings to achieve this. Can this be done thru ESS? I have not yet added an assistants. Thanks.

sunpower asked
warwick commented ·

1 Answer

Why does the production of my Fronius drop drastically until it is restarted in an AC Coupled system with a Victron Inverter

I installed an 8kVA Victron Quattro Inverter, with Venus GX, 13.8kWH BYD battery, 250V 100A Smart solar MPPT Charge Controller, 3500W PV panels for the Charge controller.

Alao installed is a 5kW Fronius Primo Inverter with 6,300W PV panels

The system works fine and I could get as much as 5000W on the Fronius; but the production of the Fronius drops drastically almost daily; it could go as low as 190w (even when there's ample sunlight) and stays that way until the Fronius is restarted (then it starts producing normally again). Also when the batteries are full, the production of the Fronius drops and the loads start taking from the battery.

What could be responsible for this, and how can this be corrected?

Take note also that the panels are not shaded, and the production of the Charge Controller's panels stay as expected.

The system is entirely off grid.

The assistant used is the PV assistant.

I'll greatly appreciate any help I can get from @guy Stewart and from anyone. Thanks.

Vicstix asked
PetaJoule commented ·

1 Answer

Self Consumption without ESS


Electrical engineer here, heavily DIY oriented, trying to understand "the Victron ecosystem".

I want to build a Backup and Self Consumption power supply system for some of my house loads.

ESS "Optimize for Self Consumption" would be almost perfect for me, but unfortunately ESS is completely out of the question due to grid regulations.

Grid outages happen about 5 times per year.

I am considering a Multiplus II 48V / 3 kVA inverter, 10 kWh Winston LiFePo4 (16 x 200 Ah cells) and a two-signal BMS. I could afford to go for 4 x Pylontech US2000 boxes if it's worth the extra cost...

I also have room for 10 - 12 PV panels (250 - 300 Wp each) and a SmartSolar charger.


1. When the grid becomes available (on initial power-up of the system or right after a grid outage ends), charge the batteries from the grid up to a nice, crisp, 100%. After this initial grid-supported charging, DO NOT USE GRID TO CHARGE batteries, until after the next grid outage.

2. After this initial charging, only PV power should charge the batteries.

3. During normal operation, when battery SOC drops below 50%, stop discharging and switch loads to grid.

4. When PV power becomes available and battery SOC rises above, say, 60%, switch loads from grid to battery and PV.

5. If grid is down, support the loads from the battery down to, say, 5% SOC.

Can these requirements be met with Victron Equipment? What additional hardware do I need? Is a CCGX really needed? Are there any Assistants that can make the inverter behave like above?

Additional requirement (6). About half of the grid outages happen during the winter. Heavy snow + aerial power lines do not go well together. It also takes the most time to be fixed, due to bad weather. So...I also need to connect a backup generator into this picture. Would go nice with requirement 1, I should be able to fully charge the batteries during the day and run on battery power during the night. :)

Many thanks in advance!

MondeoMan asked
Daniël Boekel (Victron Energy Staff) commented ·

3 Answers

Quattro Programmable relay - AC input

Hi, What are the AC input conditions for the relay to shift? Via the programmable relay we would like to know if the load is on inverter or on mains.

It seems like the relay is switching all ready at approx 50VAC input voltage!? Result: The relay indicates that AC input is available, but of course the load is still on inverter at this low input voltage.


Peter Rysholt Christiansen asked
Peter Rysholt Christiansen commented ·

1 Answer

Multiplus How to display critical loads and grid code selection



How can I display the critical loads and ac loads like in the pic below (pic from another user question)

I have Multi 24:3000 don’t have ess installed yet

I can not select grid code AUS/NZ grid code and have lom device,how can I select au/nz grid code or do I have to select other not complaint


solarone asked
Denzel answered ·

2 Answers


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