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How to Limit DC-DC Charger Current on Orion-Tr Smart?

Hey Victron community!

First time posting here, so forgive me if I'm missing any formalities.

I recently bought a Victron Orion-Tr Smart DC-DC Charger Non-Isolated 12/12-30. We are planning to use the charger in a travel trailer with a custom 300ah battery bank. The problem is that we want to wait to upgrade the OEM positive wire from the tow vehicle's battery (it is currently a 10awg wire) to a much larger wire until after we start using the trailer. Per my research, we will need closer to a 2awg wire, which is much bigger and a pain to re-route from the tow vehicle, so hoping to kick the can down the road a little.

With that said, is there a way to limit either max current or max power output on these units? Or is the only way to limit it via limiting the voltage? Are there any tricks to artificially limit the current?

Thanks in advance!

dirtjackson asked
Stefanie commented ·

2 Answers

SmartSolar Maximum input current

Hello there, the smartsolar 100/30 datasheet says:

1a) If more PV power is connected, the controller will limitinput power

2) A PV array with a higher short circuit current may damage the controller

Am i the only to see a contradiction here ? Maybe 1a) holds for high voltage and current within limit (serial connection) ? My understanding of 2) is that several PV in parallel will damage the controller. Or maybe that's me begin stupid this morning ... Anyone cares to clarify ? thanks !

Roman Le Houelleur asked
klim8skeptic commented ·

9 Answers

Low Solar Power Input

I’m a newbie to solar power - go easy and don’t laugh too much. So I bought a kit for my van, rigged it up yesterday and my 110w panel was showing 80w in sunlight. Great. It went from bulk to absorption to float and battery then fully charged that day. No draw on battery, van is sitting on drive outside my house. Today same sunlight level but only showing 6w. Is this correct? Is it because the controller knows the battery state and only allows that much from the panel?

Upercentenaryboy asked
Matthias Lange answered ·

1 Answer

RS 48/6000 Data Sheet

Hello, is there an early version of data sheet for new RS 48/6000, it been a while in stock with no datad sheet & amanual. Thanks

MoMahmoud asked
Guy Stewart (Victron Community Manager) answered ·

2 Answers


Hello everybody,

I have a Victron Quattro 5kVA/120V setup with a MPPT 250/100 and lithium batteries BYD B-BOX PRO 10.0. AC INPUT 1 has mains electricity of the grid.

I want to use the AC INPUT 2 not with a convencional generator but with the output of a eolic system that is installed in the same place, with another battery bank. The inverter output of this system is: 8kW / 127V single-phase (máx output current 63A).

I didn't find any question here about a hybrid system (solar+eolic) like that. The Victron setup will be the same as with a generator in the AC INPUT 2?

Is there anything else to pay attention besides the configuration?

Bruno Santos asked
Paul B edited ·

1 Answer

More intelligent Generator handling

Victron Multi/Quattro & Generator is a topic from time to time, where the Vics do not accept a genset, problems with stability etc.

True, one significant part of the problem may be that Generator vendors often market/label their products with rather optimistic specs (where you find out that your 5KW genset actually tops out at 3.5KW and similar).

However, after observing (and filming - movie available upon request) the handling of a 3p Genset by a bunch of Vics, one would like to suggest that there is a lot of room for improvement on the side of the Vics.

I would suggest to consider implementing an "adaptive mode" for the genset in the Multis/Quattros. What is that?

The Victrons could start with a load of - say - 1A for the genset and slowly ramp that up until the genset voltage drops significantly (or completely). Either make several of these measurements and then remain under min(measurement1, measurement2, ...) or just one and remain under the "collapse threshold" with a safe margin.

In any case - don't put load on gensets like an on/off switch! Almost no genset can handle this.

It would be nice if that could be implemented soon-ish.

Watching our video with the poor genset getting bashed one feels almost "rooting" for the Victrons like "come on guys, you can't be that stubborn" ;-)

PetaJoule asked
JohnC commented ·

1 Answer

BMV-712 Does not show charging current


I have a motorhome with (2) 12 V AGM batteries and a Victron 712 to monitor them. Everything was working correctly until I let the batteries become discharged.

I removed the batteries & charged them fully outside of the vehicle. I also had my battery dealer test them (the batteries are less than two years old). When I installed the charged batteries in the motorhome, I ran the on-board generator to top off the charge.

With the generator running, the voltage shows 14.2, but the current wavers between zero & 0.2A. I get the same readings if I run the motorhome's engine. The manufacturers of the converter/charger and the battery isolater had me check a few things & they both appear to be working. When the generator or motorhome engine isn't running, the 712 shows a negative current amount.

Any suggestions on why the current reading is essentially nonexistent?

mbutts asked
Justin Cook - Bay Marine Supply USA commented ·

2 Answers

Venus GX & SolarEdge SE7K + SE Energy Meter total energy consumption AC-loads wrong

Hi !

I'm currently building my energy storage (on grid) consisting of a Multi Plus II, generic battery and PV inverter from SolarEdge (SE7K) with the SE modus energy meter (SE-WND-3Y400-MB-K2).

At this stage ONLY the Venus GX is connected, the Multiplus II is still in its box ;-)

As written in the FAQ the Venus-GX was able to find the SE7K.


Now I'm able to see the production of the SE7K.


My problem is that concerning the total AC-consumption it equals the SE7K production. This is not true. During the night it shows 0W for the AC loads but the SolarEdge portal shows me that that there is consumption from the grid.

Day (with PV production)


Night (no PV production)


Does this mean I need to buy an additional energy meter (e.g. EM24) if i want to monitor the total AC power consumption that I'll be later able to feed only so much energy from the battery that my purchased energy will be zero?

As far as I can see from the SE portal the power taken from the grid is also available from the SE Modbus energy meter.


Help greatly apprechiated!


deichel asked
Beny answered ·

6 Answers

Erratic behavior of 2x Multi in Parallel in charge mode

I would like to ask Victron and the community some help in diagnosing what could be causing this...

I have a 2x Multi parallel setup. They are matched, DC input current is reasonably balanced, measured with DC Amp clamp. In Winter, I have the system inverting by day and switches to GRID and 22h to take advantage of cheap tariffs and protect the batteries. The AC input limit is set on Venus about 14A, as I have around 3.45 kVA available from grid (15A @ 230V).

Recently I have been noticing that the powerassist sometimes kicks in well below this 14A input limit. And the following was an event, 2 days ago, that really worries me.

Batteries were about 40% discharged, and at 22h the system started charging from grid. the AC loads at that time were no more than around 300W and charge current around 35A. All normal.

Now, picture 1 shows when I started the washing machine (~2kW on AC out) at same time batteries were charging. Seems also normal, and is what I expected:



But some moments after I noticed the charge current dropping to almost zero:



And there was some strange noise in the Multis at the same repetition rate: seemd like charger starting every 3 or 4 seconds. Current droping from 30A to zero and repeating in some seconds interval. But it got weirder, sometimes powerassist also came into play:



And it went into passtrough sometimes. Here's the complete scenario, until I gave up and stopped the washing machine:


You can see the oscillations in VRM:



So, if only charging, no problem. But when high loads and charging is needed at same time, it got a little crazy. I have firmware version 459 in the Multis since more than 9 months. Only now I noticed this. It coincided with latest Venus OS but there may be no relation. However, I did notice some strange facts:

1. The currents and power in the Venus OS menu are somewhat suspicious. I assume the power is the "real" power, and current is also "real" or does it take reactive power into account? Because 14.8 A x 233V is much more that 2436W. PLus, I measured with AC clamp, and the meter only showed about 10A coming into the system (common to 2x Multis).


EDIT: this measurement is from a date earlier (2 weeks before) the event above. Input limit was 15A at that time. I was puzzled about which vales are real power and which (if any) also take into account the power factor.

2. Upon the strange event above, I downloaded the configuration of the Multis and checked with VE config, I noticed that only one of the Multis has 7A on the AC input limit. The other one only had 3A set. I find this odd, as like this the system cannot obbey the 14A limit set on Venus OS...

Any help very much appreciated.

EDIT 2: this is the current 2x Multi Setup

Elimac asked
Elimac commented ·

2 Answers

Multiplus 3000 Split Phase Voltage Issues


I have two Multiplus 3000's in an RV split phase with 50amp shore power (two legs of 120v power in USA). The units are configured in split phase and are hooked up to a 12v lithium battery bank with 800 amp hours of power (8 batteries in parallel).

I am experiencing a weird issue, where one leg's input voltage from shore will drop down to ~100 volts and the other leg will increase to ~135 volts causing my surge protector to trip briefly then everything resets after 1-2 seconds and the cycle repeats. I've tested in multiple locations and this is occurring in multiple locations so i've ruled out the shore power actually being the issue (i think, open to suggestions but this has occurred in 10 locations. We also just replaced our surge guard transfer switch to check if that would fix or be the cause). The issue seems to occur extremely frequently (every 15 seconds) when running a 1500 watt or more load on either leg. We have tried both dynamic current limit and without and UPS function and without with no noticeable change. When the issue is occurring the units will switch from float to inverter and back in a fraction of a second I think because of unhealthy input voltage. We are running through the system checking for loose wires but don't expect to find anything but will double check.

Everything works fine on battery and when not connected to shore power.

I'm curious if anyone has ever seen this before and if it may be a firmware issue or a result of a split phase configuration issue? We are running the 430 firmware that came with the units and didn't want to upgrade without checking here first if anyone has seen this issue.

epm96 asked
epm96 commented ·

1 Answer

How can I connect a standalone quattro to a 3 phase quattro system

I want to connect a standalone quattro connected to a 500 ah power bank and solar panels to a 3 phase quattro system with 200 ah power bank. I connected the standalone to the ac input 2 of the master unit of the 3 phase system but it did not charge the battery bank. You can see the voltage and frequency on the ccgx but there is no current. How should I connect it to charge the 3 phase system battery bank?

Yrys asked
Yrys answered ·

3 Answers

Ingangsstroom van Phoenix 24/5000 48/5000

Beste iedereen,

Ik probeer het bereik van ingangsstroom en uitgangsstroom te vinden van phoenix omvormer 24/5000 48/5000.

Ik heb hiervoor in de datasheet gekeken maar hier kan ik het niet in vinden.

Weet iemand dit toevallig?


OS_Stagair asked
Daniël Boekel (Victron Energy Staff) answered ·

1 Answer

High ac input consumption on 10000va

We are running a client on ESS with AC out2 as not critical programmed, we are seeing a value of 2.5-3a/HR @230v the moment the input contact activate. This is a lot higher than the intended self consumption mentioned. We would like the know why this is. We do have a grid meter et112 installed set at 20w. The ccgx can't manage the drain from input below 450 w. Please assist,,,:setup 48/10000/100*2 & mppt 250/100/48 smart, bmv 700 -standard 500a shunt, ESS, ACout2 activated and de-activated with assistant. With vrm

Meiring asked
kolfleading answered ·

3 Answers

Victron MPPT 100/30 input over-current protection?

Is it safe for controller to connect it to solar array much bigger then controller rated output power? Let's say, would it be safe to connect it to 75V 3000W solar panels? I understand that max output MPPT controller would be up to 420W for 12v battery, but would like to know if it's safe for controller input?

Also would it be safe for MPPT 100/30 if I connect charged 24V battery to its input instead of solar panel to charge my 12v battery bank? May I assume controller will not fry itself, but will take 420W from input battery?

Yuri asked
Justin Cook - Bay Marine Supply USA commented ·

1 Answer

what Fuse size for Victron 12/800/35 running 2 x 150aH Leoch AGM batteries

What Fuse size for Victron 12/800/35 running 2 x 150aH Leoch AGM batteries (in parrallel)

I want to ensure I have protection on red battery wire is a fuse required?

I have also set dip switch 2 to on is this correct. Charger and Alarm light did not flash when I switch dip switch 6 on and off as manual states

hart.tt62 asked
WKirby answered ·

1 Answer

SMU TO microtek inverter main light flashing

I have 3 100w panels connected to a SMU microtek 3012 to a microtek 900 inverter it works fine for a few hours then the main light on the inverter starts flashing and going on and off. I have tried different inverters and switching the smu. Anyone else have any Idea?

Cory asked
Guy Stewart (Victron Community Manager) answered ·

1 Answer

What is the minimum Input Current Limit?

What is the minimum input current limit for Quattro?

Setting it on VEconfigure allows me to set it as low as I want. However, the input current limit won't go below 10.5 on the Colour Control.

It needs to be set lower as the customer only has a small generator. How do I do this?

Mick Finch asked
Guy Stewart (Victron Community Manager) edited ·

1 Answer

can switch as group be changed from color control

Changed some settings on RV, running 2 12/2000/80 units usually on 220v 50A shore power or 1 or 2 Generator sets. Now customer is feeding with 30A 120v shore and can't pass power. I believe Switch as group is at fault, should be seeing 120v at both inverters, just its not seeing 180 degree phase difference at the inverters? Hoping I can talk customer thru programming, since its far out of state now.

outputcentral asked
Paul B answered ·

1 Answer

IP67 Battery Charger Leakage Current

Some chargers have ground/leakage currents because of the filter capacitors used in the input line of the charger. What is the leakage current (ground curent) of the IP67 Battery Charger?

KAYA asked
Paul B answered ·

1 Answer

Multi Plus 24/3000 AC In

We had lightning hit the electrical kiosk in the road and power was off for 2 days when power came back on the AC in is not accepting or reading any voltage it just shows 2v I have tested and and I get 230v what could the problem be.

Many thanks

wentzel asked
Boekel answered ·

2 Answers

No up down buttons - is there a virtual option for raspberry pi running Venus OS

I have Venus OS loaded on a Raspberry Pi with a 7” touch screen in my RV. I have a BMV-712 and a Multiplus connected to it and everything is working great. My issue is I cannot figure out how to operate the up/down buttons that would be part of the CCGX or find a substitute such as a virtual keyboard or equivalent.

I want to change the input current limit. This appears to be accomplished by selecting the option and then pressing either the up or down button on the CCGX. I can adjust this by using the up/down arrow in the remote console, but I would like to make this adjustment regularly from the Raspberry Pi display. I will be using a small generator off grid as well as shore power in campgrounds which is why I chose to go with the Venus OS software over other options.

Thanks for the help!

Rstarr asked
Markus commented ·

1 Answer

Two Skylla-IP44 12/60 units controlled remotely by one Skylla-I control panel

I have just completed installation of two Skylla-IP44 chargers (120 60hz VAC input……12/60 DC output). All is working nicely. Both units answer to the remote control and operate as a single unit. The problem is that the total AC input current is limited to 10 amps; meaning 5 amps to each charger… giving me a total of about 75DC amps output rather than the 120DC amps that the two units combined should be capable of. Scroll #34 on the set-up menu on the charger screen is where the input current limit is set. The charger unit will not allow an input current setting above 10 amps. Both chargers are set to the maximum limit of 10 amps. However, the remote panel also will not allow current limit setting above 10 amps.. and this means 10 amps total… to be shared by both chargers. I need to find a way to set a higher limit on the chargers as that seems to be where the remote panel is getting its information. Please help. Thank you!

DStreech asked
mvader (Victron Energy) commented ·

4 Answers

Multiplus 2 48/3000/35 230V 3 phase installation in Germany, workaround for maximum input current > 32 amp


short description of actual situation:

a) fixed installation, 3 phases, south of Germany

b) at the moment no victron product, usv, power generator or solar installation present

c) the power connection is in the basement of the main building for three buildings

d) the main fuses after the electricity meter are 3x 65 Amp

e) the line is divided into three strands (3x 3x32 Amp) for the main building and two strands (2x 3x40 Amp) one for each of the outbuildings

f) in the outbuildings a load of 32 amp per phase is rarely/weekly used


a) In a first step an USV for the main building with a load up to 1,5 kw load per phase.

b) In a second step an solar installation on one of the outbuildings (on the main building it is not possible)

c) In a third step a combined heat and power unit will be installed in the same outbuildings like the solar installation


My understanding is, that because I want a USV functionality on the main building, I have to install the Multiplus2 in the basement of the main building. In addition to insure that in case of a power outage the solar is still working I have to include the outbuilding with the solar in the AC-out-1. The second outbuilding can be installed on AC-out-2.


I have rarely, but I have in this installation on AC-out-1 an overload in normal mode (32 amp outbuilding + parallel load from main building ~16 amp). Can I work around this issue if I make a 3-phase 2 parallel installation (so 6x Multiplus2) and connect the two AC-out-1 of the two parallel Multiplus2 per phase before they are spitted for main building and outbuildings?

Thanks in advance,


MrWolf1973 asked
Bob (Victron Energy Staff) answered ·

2 Answers

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