Error code VE.Bus System [276] VE.Bus Error 29

Q&A and troubleshooting DESS
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1

Hi
My setup is following

Product: Quattro 48/15000/200-2x100 (6 units)
Firmware version: 2656556
Product id: 2656
VE.Bus connection: VE.Bus
Hardware configuration: Three phase system, two units per phase
VRM instance: 276

Battery Lithium LifPO4 200A * 7
AC In 1 : Generator Connected 200KW
AC In 2: Grid Connected
ESS
SmartSolar MPPT VE.Can 250/100 rev2
CG EM24 Ethernet Energy Meter (PV Inverter 10KW 3PH AC out connected)

Working fine when sometimes I get error
276 VE.Bus System [276] VE.Bus Error: VE.Bus Error 29 like 4S or less
Then it gone
So, I didn’t fine this error code 29

Checked network patched cable & used original cat6 patch cable

How can I fix this error code?

2

Hi waiting reply

3

@mvdig
With such a large system, i am surprised you don’t have distributor support?

In any case it is too large and too many variables for the community.

Is the error 29 logged to the VRM?
Are you sure it is error 29?

What troubleshooting have you done on your own beside change patch cables?

4

Hi
Patch cable used original cable there is no issue
when battery fully charged Lithium battery BMS charging disable this error within 3sec it clear

Err 29 - Over-Charge protectionThis error will auto-reset once the battery voltage drops below the float voltage. To protect the battery from over-charging the battery is disconnected

5
6

Yes it self recovers, which is what you have seen.
So what you need to work out is

  1. Is the battery being overcharged?
  2. If so then why and from what source?

Is the system programmed correctly for the batteries you have chosen

7

Lithium battery, can connect battery BMS so external control

8

That article is for the multi rs.

You have quattros in parallel. So not likely to be the same cause or problem. Whta is more likely the cause is wiring imbalance in the parallel set up

What batteries do you have and have you programmed the inverters correctly with the lithium profile and correct voltages? Are they officially supported batteries of you are using can connection?
Are all the inverters reading their dc votage at the terminals correctly?

9

Yes battery voltage and charging setup is correct
By Victron official error code list error 29 I didn’t see listed

Regards

10

Ah right. My apologies. I got my wires crossed.

The multi rs will have error 29 because it comes from the mppt side. (In the article you linked)

The quattros you need to check in your commissioning.

One of the units has a problem, maybe in your wiring set up (or possibly a physical fault) and you need to trouble shoot to work out which one.

To be honest your PV inverter may be part of the issue, i assume sine you haven’t chosen to name what it is, it is officially unsupported. And quite a few times in parallel set ups it is that combined with wiring problems.

So in a three phase parallel set up, you will have to check if the balance between units is good.
In the parallel is there good current sharing on AC and DC? Are all the units reading their terminals correctly?

Contact your dealer to work it out with them. This is not a small set up and the forum is not going to be able to help you.
If you did not buy through a physical dealer, use the official support page.