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Installing a Mains Detector on a 240 VAC Quattro without a neutral

My installation involves a 240 volt AC and 24 VDC quatro with an L1 and L2 design. Will the 120/230 vac Mains detect (supplied with the VE BMS), work when there is no Neutral or grounded connection on the Inverter in bus bars? How should it be wired?

Adventurousboat asked

0 Answers

MultiPlus 230V 12/3000/120 VE.Bus

Just a question about getting this unit up and running in the most basic form. I have this unit and would like to plug the battery in and get it inverting with no configuration (I.E. Plug and Play) or will I need to have some type of VE.Bus device connected?

When I try to power this unit up I get VE.Bus error 4. I've got a Venus but wanted to get this unit just up and running real quickly without moving my setup around just yet.

Cheers in advance

Icey asked
Matthias Lange - Service Team Döbeln DE answered ·

1 Answer

Cant not Connect VE Bus to my Phoenix multiples 24V 2000VA 60A.

I can't not seem to get my multiples to work with the MK3, it won't let me access it to change the settings on it.

the code on the board is 1818, can someone please help thanks.

Chinaka asked
Matthias Lange - Service Team Döbeln DE edited ·

1 Answer

VE.Bus Error 5 Overvoltage on AC-Out

Setup (in an RV):

* 2x MultiPlus 24/3000/70-50 120V set up in master-slave configuration
** One each connected to a circuit breaker panel
* SmartSolar MPPT 150/70
* Color Control GX
* BMV-712

AC panels have loads distributed across them. Included among these are two RV aircon units, with soft-start capacitors added. When I run a specific RV aircon unit, which is on one panel, and another high-wattage device on the other panel, I get VE.Bus Error 5 and the accompanying 30-second shutdown of all AC loads.

Testing so far:

* Seems to be centered around the interaction between the inverters, one of the aircon units, and the solar system.
* Only happens when inverting. When on shore power, no issues.
* Seems to only happen when the compressor on the AC comes on.
* Second AC unit does not appear to generate the problem.
* Load at the time is anywhere from 1600 - 3000 W, depending on what I have running. Seems to initially require me to put a heavy load on the system, then I can get it to happen with solely the AC unit in operation.
* Slave unit always displays the fault. This inverter drives the aircon unit that I can generate the fault with.
* Have not tried cutting out the PV controller far have only cut the panels out (400A panel cutout switch, 80A controller cutout switch)

Any ideas appreciated.

malcolmdmoore asked
Guy Stewart (Victron Community Manager) commented ·

0 Answers

MultiGrid 3000 - VE.Bus Error 11 (step 6)


I have an ESS 3-phase installation with 6 MultiGrid 48/3000/35-50 (two on each phase).

The system runs fine except this famous relay test.

I tried almost everything to troubleshoot this error, but before I try to contact my vendor(s) for the Multis, maybe someone here has an idea.

First of all, the error happens with or without load at the Multis. Without load means that there is nothing connected to the ACout of the Multis.

If I disconnect the Grid from the Multis (ACin), the Multis disconnect Active(in) and Neutral(in).

Measuring now the impedance between Neutral(in) and Neutral(out) shows > 5M Ohm, which looks correct for me.

Measuring Neutral(in) against PE(GND) shows 0 Ohm, Neutral(out) against PE shows > 10M Ohm.

If I disconnect the PE (GND) from the Multis the relay test passes without error and everything runs smooth.

I got my first 3 Multis about a year ago, the others are from October last year (1) and from two weeks ago (2).

For the error details see the attached pictures.

It would be very helpful to know what is tested during 'step 6'.

Any help is very appreciated.



schwarzenbergf asked
Vicky edited ·

6 Answers

ORION TR 48/24 380W switched by ve.bus bms

We have a setup where we want to charge a 24V lithium battery bank from a 48V source by using ORION DC/DC 48/24. The 24V lithium bank is managed by a Victron VE.bus BMS. Can we connect the charge disconnect on the BMS directly to the "H" connection (remote) on the Orion to switch it on and off ? Or is there a better way ?

Chris45 asked
Lysdexia answered ·

1 Answer

Two inverters, same device instance

Hello! I have been using a Phoenix Inverter connected to Color Control GX. It has device instance 257. I got a new Multiplus, and it also have device instance 257. How do I go about solving this?

Drogos asked
Drogos commented ·

0 Answers

Venus GX -> NMEA2000 / Signal K

I have an EasySolar 24/1600 that I'm looking to tie into my vessels sensor / monitoring network.

From reading this article it looks like the recommended approach has been to bridge both the VE.Bus connection from the internal MultiPlus and VE.Direct from the MPPT direct to N2K. In the comments section though there was talk of a CCGX -> NMEA integration. Is this still something on the horizon?

I'm assuming it will apply to the Venus GX too? If so, that would be a much neater integration (VE.Bus and VE.Direct -> Venus GX -> NMEA) as well as providing a couple of additional sensor inputs.

On a slightly related note, has there been any consideration for providing a direct Signal K interface from the Venus / CCGX?

kim asked
mvader (Victron Energy) answered ·

6 Answers

VE.Can and VE.Bus???

I'm looking to expand the Victron equipment on my boat and keep seeing references to CAN and BUS....can anyone explain the difference between them?

I've seen CANBus talked about and as far as I understand the CAN is the "brains" and the Bus is the way that the data is shared. What is confusing me is the way that Victron has then separated and there are VE.Can to VE.Bus connections.

Bora asked
Paul B answered ·

1 Answer

VE Bus Error 17

@mvader (Victron Energy)


We have been experiencing VE Bus Error 17, we have followed Victron's suggested advice such as updating all devices to the latest firmware, replacing all of the VE Bus cables including the one to the Venus GX, reloading all of the ESS assistants into each of the inverters etc. The system has not shut down with error 17 for around 4 days however this is not unusual and we are not confident that it is resolved until the problem has been pinpointed.

Please see the VE.Bus diagnostics below. We have 6 Multiplus II's in the system yet only 5 of them appear here. The VE Bus daisy chain runs through Phase L2, device 2 (4) (the missing one) to get to Phase L3, device 2 (5) proving the cables are ok all the way through to the last inverter. I have also exchanged this inverter (L2 device 2 (4)) with another one to see if the new inverter showed a counter, with no such luck.


1. What could be the reason that all 6 inverters in the system are not appearing in this list?

2. As Error 17 is related to the slaves in a system and will report this error when the communication with the phase-master has timed out, could this missing slave be related to the error 17 shut downs we are experiencing?

We have been battling this error on our own for around a month and would now appreciate some advice and some help to overcome the problem to reassure our customer that the system can operate as intended.


Wes Corbet


Wesley Corbet asked

0 Answers

Smart BP; Relay mode vs Li-ion mode?

I just replaced my BatteryProtect with a Smart BatteryProtect. What's difference between the "Relay" and "Li-ion" modes? Pros & Cons?

I was using B7 on the old model. The remote lead comes from the VE.Bus Load Disconnect port.

All components are Victron, including, but not limited to, the CCGX, BMV-712, VE.Bus, MPPT, Lithium Battery Smart, Digital Control, etc.

Edgargw22 asked

0 Answers

Help with Quattro 24v 5000 VE bus error required.


I wonder if anyone here can help me with a problem that I have with a Quattro 24v 5000 / 120 inverter /charger.

The unit is fitted to a large horse transporter along with onboard diesel generator. The vehicle has an EPLEX multiplex system that controls all the DC and AC switching on the vehicle and also interfaces with the invertor. Power to the invertor is supplied from 6 x 230 a/h AGM batteries.

When I was first asked to look at the vehicle the batteries were all dead flat and appeared to be the originals fitted to the vehicle when new 12 years ago, all batteries have been replaced with new.

With the 24v DC power restored the EPLEX system was coaxed back to life and appears to be functioning properly and can communicate with the invertor allowing switching between modes and displaying the LED status of the invertor.

When powered on, the invertor immediately displays fixed red LED’s on temperature and overload and fixed amber against float and absorption. Green against invertor on and amber against bulk flash out of phase with each other.

If the red overload and temperature LED’s were not illuminated this would indicate a VE bus error 17 “one of the slaves has assumed phase master status because the original phase master failed”

Checks so far:

24Ov present at invertor input.

Voltage at invertor DC input measured and is identical to the voltage at the batteries (25.5v)

One wire of the remote senor input at the invertor has been disconnected and taped back, it also looks like the connector has been damaged.

There is no short circuit on either of the 240v outputs from the invertor.

I am sorry for the long explanation! could anyone offer a way forward with further diagnosing this of this unit?

Best regards


RallyRob asked

0 Answers

Connecting a smaller charge controller instead of a VE.CAN controller

I have a common, main DC bus bar.

I am sending 48VDC to it from various energy sources: solar, wind, hydro, a DC generator, and AC energy converted to 48VDC.

To avoid overcharging the batteries after the 48VDC bus bar, I am using VE.CAN chargers that are connected between them as a master with slaves.

One of the problems I have is that each solar panel is connected to a single VE.CAN MPPT charger. The solar panel is too small in relation to the smallest MPPT charger.

Due to shading issues I cannot connect more than one solar panel per MPPT charger.

Is there a way to connect the solar panel to a smaller MPPT charge controller without interfering with the current arrangement of not overcharging the battery or having chargers in standby?

Could a GX display or some other device help me to achieve this? Could up to six solar panels be connected through a GX display, for instance, and could this group (solar panels and device) become a slave of the master MPPT charge controller?

I thank you in advance for any assistance.

Blue sails asked
Blue sails answered ·

3 Answers

how to sync ve.bus with SOC

Hi, I've a problem with sync Ve.bus data with SOC, so the graphic result always empty. Any Idea?






nicola.comino asked
super-wolf commented ·

3 Answers

Quattro 48/5000/70-100/100 120V Bulk and absorption LEDs flash synchronously and Vdc shown at VE Configure monitor is different to the battery actual voltage

Problem description:

After installation the equipment performed fine, completing the battery charging cycle. After the first grid AC power outage it switches to the inverter function and supplied energy from the batteries to the loads for about four (hours). When the grid AC power returns it switched to the charger function but showing continuous LED light in the mains on indicator and the bulk and absorption LEDs flash synchronously (simultaneously). Low battery is shown shortly on startup.


After switching off and on the equipment the error indication remains and the batteries are not charged. After recharging the batteries using an external charger and reconnecting them to the Quattro it doesn’t start using the manual switch.

Using VE Configure III the Quattro restarted and it shows that all default setting are OK. However the monitor shows DC voltage Vdc = 24.9V which is completely different to the 48 V measured using an external voltage meter. The SoC bar I the monitor also shows the battery charged . Bulk and absorption LEDs remains flashing synchronously.


Can anyone provide any orientation about this failure and its resolution procedure?

jrrujano asked
Paul B answered ·

1 Answer

Daisy Chain VE.Bus: RJ 45 - 8 Pin set up of 1 to 2 splitter

Hi - I want to make sure that I buy the right splitter adapter cable(s) to allow a series connection of ve.bus components such as bms, mk3-usb adapter and Digital multi control. Thank you

hanschristian asked
hanschristian commented ·

1 Answer

Orion-TR Smart 12/12 30 Charge Disconnect Question

Hi there,

i just purchsed a Orion-TR smart 12/12 30A isolated to istall it into my Van. I would like to enable low temprature charge disconnect as my lithiums could get below 5 degrees from time to time.

The manual states that i should connect it with a "Isolated remote ON/OFF cable" to the charge discconect of the VE.Bus BMS. Unfortunately i cannot find this kind of cable anywhere, could anyone point me in to the exact cable i need? Also, could this special cable be replaced with a simple wire from the VE.Bus BMS charge disconnect to the H-Pin of the Orion-TR?

As an alternative, could i also connect the VE.Bus BMS charge disconnect to the COM Port of my BMV712 and then connect the NC relay of the BMV712 to the H-Pin of the Orion-TR in order to remotely turn of the Orion-TR in case of low temperature?

best regards,


lofy asked
lofy commented ·

1 Answer

Is my BMV-712 working? Can't get signals from NO, COM & NC ports...

Is my BMV-712 working? The display and settings seem to be ok, but my NO, COM & NC ports in back never seem to turn on (energize w/12v signal). Are these ports affected by "11. Relay mode"? Batteries don't charge if COM port isn't "ON" with 12v signal (COM port is connected to VE.Bus BMV Charge Disconnect port). Are there any recommendations for settings 16-31?

fyi, all other components are from Victron. TIA...

Edgargw22 asked
Edgargw22 commented ·

1 Answer

With the Smart BMS CL 12V 100A, is a VE.Bus BMS still needed?

Hello everyone.

For the lithium battery system on my yacht I've been planning to use a VE.Bus BMS to manage and protect the batteries. Now that I've been made aware of the Smart BMS CL 12V 100A, which I will use to protect the diesel engine's alternator from having the life sucked out of it by four big lithium batteries, I'm wondering if the VE.Bus BMS is still needed?

The Smart BMS CL 12V 100A has the same three control outputs as the VE.Bus BMS; load-disconnect, charge-disconnect and pre-alarm. So it can handle those jobs. But it doesn't have the VE.Bus BMS' mains detect cable connector. Perhaps this function isn't needed?

Does the MultiPlus inverter/charger need the mains detection connection?

Does the Cerbo GX need the mains detection connection, via the MultiPlus?

It's looking like I can adopt the new Smart BMS CL 12V 100A, drop the VE.Bus BMS and also drop the mains detector.


This Smart BMS CL 12V 100A could well be the best thing since sliced bread. :-)

Valden asked
Valden commented ·

1 Answer

BMV-712 Settings; COM port for VE.Bus Charge Disconnect port

What should the BMV-712 relay settings be after I connect the COM port to VE.Bus Charge Disconnect?

The signal from the BMV-712 COM port is OFF when I'm on Shore Power and therefore there's no charging of the house battery. It's also OFF when I don't have Shore Power.

Can anyone point to documentation that talks about settings when I'm using Victron BMV-712, VE.Bus and Battery Protect? The manuals talk about the specifics of each device, but don't provide any assistance when integrating with other components.


Edgargw22 asked

0 Answers

Victron Energy RJ45 UTP Cable: Standard-Network Cable?


does anybody know if the Victron Energy RJ45 UTP ASS030064980

which i need to connect the Venus GX to a Multiplus 2 is a special configurated cable or is it a standard network-cable?

Thanks for all answers


Karli asked
Karli answered ·

2 Answers

Multiplus 2 parallel connection problems

I have added another identical multiplus ii to the current setup. Older unit hw ref5 and new unit hw rev11. Both updated to firmware version 470, but get "Only multis of same kind and with same firmware version are allowed. Procedure will be restarted" when using VE Bus quick Cofigure tools. Both connected to the same DC and AC bussbars with same cable length and size.

Wannibi asked
Daniël Boekel (Victron Energy Staff) commented ·

3 Answers

Get AC output informations via CAN

we are developing an aggregator including 3 Multiplus 48/5000. Our controller is able to communicate via the VE.Bus to VE.Can interface. Currently we can control the inverters and read system informations using proprietary message on the NMEA2000 but cannot get informations about the load because I could not find such VREGs. Which I do not really understand because these informations can be read in the case of other devices.


I would like to ask how I determine the output power, current and voltage data of each phase on the VE.Can.

Balint Major

balint603 asked

0 Answers

Phoenix Inverter 3k 120V and Quattro 5k 100A 230V on same VE.Bus?

I have the following:
-a Phoenix Inverter 3k 120V for my 120VAC/60Hz equipment
-a Quattro 5k 100A 230V for my 230VAC/50Hz equipment
-a Cerbo GX

The Quattro is now connected to my Cerbo providing excellent data regarding my power usage. I understand the DC usage reflects the power being consumed by the Phoenix inverter.

Can I connect the Phoenix inverter to the same VE.Bus for more insight into the AC loads or other data?


rspott asked
rspott answered ·

2 Answers

VE.Bus BMS - how to control multiple devices?

Can I connect more than one Victron unit with a remote On/Off switch to the "Load disconnect" or "Charge disconnect" of the VE.Bus BMS? On the charge side I have a Skylla IP44 charger and a SmartSolar MPPT device - can these both be controlled by the "Charge disconnect" of the BMS? Similarly, on the load side I have three BatteryProtect devices - can all three simultaneously be connected to the "Load disconnect" of the BMS? If not, how should I connect these devices to the BMS? Thank you!

s_v Simbora asked
Daniël Boekel (Victron Energy Staff) commented ·

2 Answers

SOC in VE Bus is not matching the battery

I have 3 x 48/5000/70 multiplus in a 3 phase configuration which is fed by a 15kw Fronius 3 phase solar inverter.

Lately the SOC in VE Bus does not match the batteries. This causes the SOC to stop st 90% SOC when the batteries are at 57.6v which is the absorption voltage. Sometimes it will sit at 90% for 3 or more hours waiting for the batteries to meet the SOC before going into absorption. I've tried everything I can think of but I'm obviously missing something. Even my installer is at a loss. Can someone please help. Thanks in advance...

Daren Connor asked
Daren Connor commented ·

1 Answer

ve.bus battery monitor acronyms?

Anyone know where I can find out what each acronym means in the battery monitor window in VEConfig 3? I can't find them anywhere.

Fozzydabear asked
Fozzydabear commented ·

2 Answers

Cannot see the VE bus system in VRM?

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.


Ray asked
Ray commented ·

1 Answer

Venus GX system off and limited data displayed

Hi there, I have a Phoenix Smart, and MPPT Smart and a Phoenix inverter all connected happily via Ve.Bus (one USB) and two temp. sensors and showing data in the textual overview but the system shows off in the colourful widget screen and all I see is battery voltage. Have I connected something wrong?

SY Woodwind asked
SY Woodwind answered ·

3 Answers

MultiPlus-II 48/3000 and VE.bus Error 1


I have UPS installation with 6xBYD B-Box Pro 2,5 and 3x MultiPlus-II 48/3000.

Few times a day System shuts down for very short time (seconds - after that wakes up) and Color Control indicates that Error #1 then occurs. There is no grid loss then as well.

I have checked what could cause error 1 and didn't find it in the system:

-no overload

-no low battery

-no temperature alarm

What can be the reason of situation described with words "Device is switched off because one of the other phases in the system has switched off "?

Can it be caused by defective Multi which works properly all day but 3-6 times a day turn off itself for a while?

I just installed video recorder to find monitor LEDs an each Multi.

TechSol asked
ejrossouw answered ·

2 Answers


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