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Jono (Victron Energy Staff) avatar image
Jono (Victron Energy Staff) Posted · · Guy Stewart (Victron Community Manager) edited ·

Victron VW Van Electrics Install - Schematic Drawings


You may have seen our VW Van videos on YouTube.

If you haven't here is a link to them:
Episode 1 - Solar: https://youtu.be/YW_xDerTycQ
Episode 2 - Alternator: https://youtu.be/vCOJ3nBFpIM
Episode 3 - Mains Electricity: https://youtu.be/TDSzfmHHjsA
Episode 4 - Color Control & Battery Monitor: https://youtu.be/2PyMIndbz6w


Here are the slides for the concept:

Single Line Diagram PNG images

Overall Idea

Solar Idea

Alternator Idea

Single Line Diagram PDFs

SLD - Victron Van - Automotive - Alternator.pdf

SLD - Victron Van - Automotive - Overall.pdf

SLD - Victron Van - Automotive - Solar.pdf


After lots of tweaks and changes, here are the schematic drawings for each section of the vans install:

Detailed Schematic PNG Images

Solar

Alternator

Mains Electricity

Full Schematic Wiring Diagram

Detailed Schematic PDFs

DS - Victron Van - Automotive - Alternator.pdf

DS - Victron Van - Automotive - Full.pdf

DS - Victron Van - Automotive - Multi.pdf

DS - Victron Van - Automotive - Solar.pdf






wiring diagramvan wiringschematicsvw van
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Thank you Jono. Destined to become a standard reference, so if you do make 'improvements', please let us know. Cheers.

They are indeed extremely useful for reference, thank you very much Jono.

I was wondering if it is possible to get hold of the individual icons/images in order to create our own schematics.

For instance I am designing a system very similar to the "full schematic wiring diagram' off the back of the youtube video but want to use a different multiplus and not use the isolation transformer, so was hoping to build my own schematic. Or perhaps if it is a piece of software then how we might be able to get hold of that?

If there isn't I'd be really interested in either helping out on making one or testing/giving feedback to anyone working on it.

Thanks

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Why is there a smart battery sense? doesn't the VE.bus BMS send all values to the system?

The video states it's there for demo purposes as that's the point of this van. A standard install wouldn't need it.

Hi there, can anybody shed some light on whether the BuckBoost connects to the starter battery or the alternator? I plan to install a 50A BuckBoost in my 2015 Sprinter 313.


Kind regards, Tom

There is usually a more robust and accessible place to connect to the starter battery terminals, than the alternator.

All are electrically connected. You should take into consideration any fusing that might be in line of the alternator to the starter battery, so as to not exceed it with the combined loads of starter charging and buck boost.


Hi!

In the video, it is said that the current limiting will be done in the CCGX. Is it a new feature of the MultiPlus II? I thought that all VE.Bus BMS systems needed the Color Control as the current setting in the CCGX is disabled.

Hi, can you give me more details? I'm not sure which of the movies you heard that , if you can give me the link and min:sec, I can check and answer.

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This is almost EXACTLY how my van is setup minus the transformer. I assume the Battery protect is going through the BMV for relay settings for cold weather charging prevention since you can't control the buck/boost via the venus? I have a DC-DC battery charger and that's how I set mine up. I'd just like clarification as I get a lot of questions about my van setup and it would be nice to just point people to this thread.

yes, the Battery Protect is just a supplementary protection, and being controlled by the Ve.bus Bms, will protect against overcharge and of course, charge at low temperature.

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Hi I'm confused how the Buck/Boost converter is connected to the battery. From the video and wiring diagram there is only 1 cable connecting positive output from the converter to the house battery positive. I'm definitely no expert but I thought you need a circuit for electricity to flow?! I see the alternator has both positive/negative. What am I missing?!

Good Spotting!

There is a connection missing from the drawing that shows the connection of the NEG of the Vehicle battery/alternator to the Chassis GND.

This is then connected through the GND on the BUS bar.

This usually happens as part of the car electrical system as the car is manufactured, but it is an omission from completeness.

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1) In the VW Van build video 4 it talks about connecting the ColorGX to the VW screen, but then the video does not speak of it? How do you get the color GC scream on say a VW, MB or a double din radio screen?

2) is it possible to use the Victron Buck converter in a 12-14.4 Volt alternator to charge a 24 volt battery bank?

3) the 12/2000 Multiplus has a 4 amp charger connected to the car starter battery. Can a 24/3000 Multiplus charge a car battery at 14.2 volts?

Tom


Hi Tom, it is not the default VW screen, it was replaced with a smarter multimedia system (something android based). For the second question, the answer is yes, please have a look at the specs here. For the third question, the answer is also yes, on the 24/3k multi there is a 4A charger for the starter battery.

Hi Jono, thank's so much for this reference. It was extremly helpful! I just built a 24V system based on your design.

I am using Smart Battery Protects 220 and found out, that I have to use the Remote H pins to get everything to work. First I was confused by the the drawing, as on your BPs, the pins used are the ones on the "inside", also wihtout a label. On mine it's the outside ones.

Looking here https://www.victronenergy.de/upload/documents/Manual-Smart-Battery-Protect-12V-24V-65-A-100-A--220-A-EN-NL-FR-SE-DE-PT-ES-IT.pdf on Figure 5, it becomes obvious.

Can you confirm this?

Regards


My real life test confirm, that the use of the H remote pins on the BPs results in the right behaviour.

I was also wondering about the settings for the BMV 712. I used the following logic:

• Battery Capacity: Total battery capacity in Ah - obvious, I used the 25°C value, 400Ah in my case
• Charged Voltage for Victron Lithium: Absorption voltage 14,2V - 0,3V = 13.9V for 12V and I guess -0,6V for a 24V system, so 28,4V - 0,6V = 27,8V
• Tail Current: 2%
• Peukert Exponent: 1.05
• Charge Efficiency Factor: 99%

I used these sources:

https://www.youtube.com/watch?v=yMJ_vzB2avE

https://amsolar.com/s/BMV-712-in-App-for-Victron-Lithium-46cy.pdf

Hi Kiko, please have a look in the manual, there is a chapter for lithium at page 39.

I also wanted to mention the relais settings I used on the BMV which has a temperature sensor in my case. I set the minimum charge temperature on the MPPT to 8°C.

I have learnt, that is is not good for the MPPT to disconnect it from the batteries while charging using the BP. So I set the low temperature relais in BMV to close at 5°C and reopen at 7°C.

This way, the MPPT should have stopped charging, before the BP closes and turns off the Buck Boost.

Would you agree with this logic?

Why isn't the BMS using its charge disconnect directly in case of a low temperature event? The information and the configuration seems to be present within the batteries.

Hi. Is there any reason why the multi plus inverter was not also run through a battery protect? Excuse my ignorance, new to this. Thank you.

I found an area of the van wiring might need updating? there should be an Isolaotr on the DC Pos feed to the Inverter.

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