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Hello,
i have connected my Venux GX, Multiplus 2 48/3000, MPPT150/35 and 2x Pylontech US2000 today. Everything works fine but how can i change the max charge voltage vom 53,2V to 52V?
When i go to the Pylontech settings which i can see in Venux GX, i can read the settings but i don't know how to change them.
Thanks for your help
Karli
https://www.victronenergy.com/live/ess:design-installation-manual
https://www.victronenergy.com/live/vrm_portal:getting_started
https://www.victronenergy.com/live/vrm_portal:remote-veconfigure
https://www.victronenergy.com/live/battery_compatibility:pylontech_phantom
I think this is all you need, have fun :)
Thank you for the links.
Can anybody give me a simple answer?
Can i change (reduce) the max charge voltage of a pylontech US2000 via the Venus-GX or do i need special cables and software?
Hi @Karli
You cannot change the charge voltage, as with CANbus ('managed') batteries, the battery itself tells the system what voltage it wants to be charged with.
There is also a good reason for this, when lowering the voltage, balancing of the cells might not happen (because that is usually done above a certain cell voltage)
Hi,
my System runns since a few years. In this time I added many times different components...
Now it consides of Venus GX, 6x MultiPlus 48/3000/35-50 (in three phases), 2x BlueSolar MPPT 150/70 (VE.direct per USB), 2x BlueSolar MPPT 150/85 (VE.Can).
Now I replaced my old Pb Battery by Pylontech US2000.
First I changed the settings for max. Voltage to 51,5 V.
This works with old Battery very well.
Then I changeed the Battery - all fine...
But when I connected Pylontech and Venus by CAN-Bus, my Settings are ignored and Voltage is setting to 52.0 V. Also my Settings for Curent are ignored...
An other Problem is, the ESS uses only one Phase - no matter The Setting of Phase Compensation in ESS menue.
Hi @Mattin_D
As written: the Pylontech doesn't allow the charging voltage to be changed, and has good reasons for that.
What exactly do you mean by 'ESS uses only one Phase'?
I am sure, in the beginning this was not so.
But I can not lokate at what Update this came of...
Last week I tried some different combinations of Firmware, but it is always the same.
Maybe my Setting is wrong - but I did not find.
For the Battery-Setting I think, reduce the Voltage makes a very smal reduce of capacity, but a very longer lifetime...
What version of Venus OS are you on? Version 2.20 overrode the BMS to set the charge voltage to 52v as long as DVCC is turned on:
https://www.victronenergy.com/blog/2018/10/17/venus-os-v2-20-scheduled-charging-equalize-and-more/
You can read more about that here:
https://www.victronenergy.com/live/battery_compatibility:pylontech_phantom#my_system_only_charges_the_battery_to_52v
Thank you for the answer nebulight.
The Venus tells the MPPT150/35 to overwrite the 53,2V max voltage in order to protect the Pylotech Batteries. A good idea but i have read anywhere in the internet, that the cell-ballancing of the Pylontechs would only work at higher voltages. So, if Venus makes a cut at lower voltages, the Pylontechs can never ballance it's cells.
Would it be a good idea to increase the voltage to 53,2V for some hours ? If yes, how can i do it? Which Software and which cables do i need for that?
Many thanks
Karli
I am using the newest Firmware - Multi (v. 473); ESS-Assi (0177); Venus (V. 2.53)
Yes, I read this before.
But look what said in the second Link at No. 4.2 Charge Settings...
For using Charge Curent Linit, I must use DVVC turn on...
for Voltage Limit, I must DVVC turn off...
What is now the feature???
