Hi all,

I am not sure if the problem still exists, but AFAIK sometimes when multiple Axpert King inverters are connected in parallel, ONLY ONE (probably the master) is charging battery(ies) while the others are providing solar power to loads but not for charging. @Coulomb might confirm whether the issue still exists with the newer King II/or newer firmware (50.02)?

7 minutes ago, Solar1989 said:

Hi all,

I am not sure if the problem still exists, but AFAIK sometimes when multiple Axpert King inverters are connected in parallel, ONLY ONE (probably the master) is charging battery(ies) while the others are providing solar power to loads but not for charging. @Coulomb might confirm whether the issue still exists with the newer King II/or newer firmware (50.02)?

50.02 does not make and add any value for me, 

answering your feedback When user selected and BMS is off

i can go to have the maximum current from each inverter and batteries charging very fast.

while when i enabled BMS through the master inverter. I can only go 30amp per each inverter and i cannot increase the values. The BMS automatically make 30amp instead of 100amp. 
 

now we returned the system back to normal with all inverters 50.02

3 minutes ago, ibrahim007 said:

50.02 does not make and add any value for me, 

answering your feedback When user selected and BMS is off

i can go to have the maximum current from each inverter and batteries charging very fast.

while when i enabled BMS through the master inverter. I can only go 30amp per each inverter and i cannot increase the values. The BMS automatically make 30amp instead of 100amp. 
 

now we returned the system back to normal with all inverters 50.02

Have you tried to increase charging current through WatchPower app?

Previously, with Axpert VMIII 5K, the inverter itself with a (Lib) battery refused to change the current, but when I tried using the app, I was able to increase the current.

Give it a try, and make sure that actual solar power is enough for higher charging currents.

All the best.

1 hour ago, Solar1989 said:

AFAIK sometimes when multiple Axpert King inverters are connected in parallel, ONLY ONE (probably the master) is charging battery(ies) while the others are providing solar power to loads but not for charging.

I haven't kept up with the King firmware issues; all I can recall is that earlier firmwares (before about 71.97 for the King I) had some issues with solar charging. I have not had a chance to compare King I and King II firmwares; they will be different enough to make this quite difficult though.

1 hour ago, Solar1989 said:

Previously, with Axpert VMIII 5K, the inverter itself with a (Lib) battery refused to change the current, but when I tried using the app, I was able to increase the current.

? Surely you only increased the value of the maximum charge current setting, but when the battery type setting (setting 05) is LIB, it ignores this setting.

Or are you saying that in your case, actual verified charging current increased?

ibrahim007's problem is that the inverter is only aware of one battery module, when he actually has four. Once that issue is sorted out, he will almost certainly have at least 240 A of charge current available (80 A per inverter), as the BMS should signal a maximum charge current of 400 A.

Edited September 30, 20223 yr by Coulomb

27 minutes ago, Coulomb said:

? Surely you only increased the value of the maximum charge current setting, but when the battery type setting (setting 05) is LIB, it ignores this setting.

Or are you saying that in your case, actual verified charging current increased?

ibrahim007's problem is that the inverter is only aware of one battery module, when he actually has four. Once that issue is sorted out, he will almost certainly have at least 240 A of charge current available (80 A per inverter), as the BMS should signal a maximum charge current of 400 A.

I mean, in my case, I have a battery which uses the LIb protocol, and data connection was established well with the inverter. However, when I tried to increase the charging current from the panel, nothing did happen and current kept to 30A. Then when I used the WatchPower app (over Bluetooth), I was able to increase/decrease the charging current easily - I did not understand why, probably a problem with the (moving) panel firmware.

 

ibrahim007 problem looks that when he uses the LIb option, he no longer able to change the charging current at all - either a single or multiple batteries are connected (as I have understood), so probably it is a problem with the panel firmware when Lib protocol is used. @ibrahim007 Please correct me if I am wrong.  

2 hours ago, Solar1989 said:

Have you tried to increase charging current through WatchPower app?

Previously, with Axpert VMIII 5K, the inverter itself with a (Lib) battery refused to change the current, but when I tried using the app, I was able to increase the current.

Give it a try, and make sure that actual solar power is enough for higher charging currents.

All the best.

Do you mean whatpower app at laptop, or mobile? I tried many times and failed,

1 hour ago, Solar1989 said:

I mean, in my case, I have a battery which uses the LIb protocol, and data connection was established well with the inverter. However, when I tried to increase the charging current from the panel, nothing did happen and current kept to 30A. Then when I used the WatchPower app (over Bluetooth), I was able to increase/decrease the charging current easily - I did not understand why, probably a problem with the (moving) panel firmware.

 

ibrahim007 problem looks that when he uses the LIb option, he no longer able to change the charging current at all - either a single or multiple batteries are connected (as I have understood), so probably it is a problem with the panel firmware when Lib protocol is used. @ibrahim007 Please correct me if I am wrong.  

I cannot change it from Mobile app and from inverter itself.

the problem in watch power app at laptop, there is no option for LIb battery.

also in the application at mobile, i cannot see LiB type battery at master inverter.

seems to me that inverter firmware has to be updated overcome this issue

1 hour ago, Solar1989 said:

I mean, in my case, I have a battery which uses the LIb protocol, and data connection was established well with the inverter. However, when I tried to increase the charging current from the panel, nothing did happen and current kept to 30A. Then when I used the WatchPower app (over Bluetooth), I was able to increase/decrease the charging current easily - I did not understand why, probably a problem with the (moving) panel firmware.

 

ibrahim007 problem looks that when he uses the LIb option, he no longer able to change the charging current at all - either a single or multiple batteries are connected (as I have understood), so probably it is a problem with the panel firmware when Lib protocol is used. @ibrahim007 Please correct me if I am wrong.  

Confirmed, i cannot change from pannel neither from Mobile app.

3 hours ago, ibrahim007 said:

Do you mean whatpower app at laptop, or mobile? I tried many times and failed,

I mean, from the inverter choose the battery to the (LIb) option, and then use the (mobile app) to increase the charging current. This what I did with the VMIII.

10 hours ago, Solar1989 said:

I mean, from the inverter choose the battery to the (LIb) option, and then use the (mobile app) to increase the charging current. This what I did with the VMIII.

Does not work?

you have one battery or 4?

i have 4 lithium in parallel.

I have Axpert king 2 5k? What to you have? 
i have three inverters connected in parallel like master/slave/slave

one of the batteries is master and three are slave.

when i use user battery type/ means LIB is off and BMS is off. I can increase the charging.

problem is that, either the master inverter is only seeing the master battery. Or only one inverter charges the 4 batteries and that only one is giving the current.

or the firmware in the inverter needs update to make it seeing all batteries and increase the charging.

till now no solution. 
I need to reach voltronic support. Do you have any contact or email or number to ask them! I fed up from this problem.

solution is to cancel the BMS and I dont want!?

Just wondering if you have tried using the 'pyl' battery setting on the inverter instead of lib? It seems the taico batteries use a bms very similar to my seplos where the protocol of the CAN port can be set depending on the inverter, but it is set to pylontech protocol as default.

Some people in the victron forum were struggling to get a similar taico battery working, but someone did get it set up.

https://community.victronenergy.com/questions/125321/taico-bms-not-detecting-by-ccgx.html

I would suggest contacting your battery supplier to get hold of the bms software mentioned in the post above and setting up PC comms over rs232. That will give you better access to manage the battery bank and bms etc. Then you will be able to see if the batteries are communicating with each other without having to rely on the inverter.

 

2 hours ago, ibrahim007 said:

Does not work?

you have one battery or 4?

i have 4 lithium in parallel.

I have Axpert king 2 5k? What to you have? 
i have three inverters connected in parallel like master/slave/slave

one of the batteries is master and three are slave.

when i use user battery type/ means LIB is off and BMS is off. I can increase the charging.

problem is that, either the master inverter is only seeing the master battery. Or only one inverter charges the 4 batteries and that only one is giving the current.

or the firmware in the inverter needs update to make it seeing all batteries and increase the charging.

till now no solution. 
I need to reach voltronic support. Do you have any contact or email or number to ask them! I fed up from this problem.

solution is to cancel the BMS and I dont want!?

No, my architecture was different. I only had a similar problem with 30A charging and the Lib protocol. That's why I shared my experience.

Unfortunately, I don't have any contact with Voltronic, but you might contact Taico so they can confirm which protocol you should use and the pins on the COM port.

 

All the best.

3 hours ago, jumper said:

Just wondering if you have tried using the 'pyl' battery setting on the inverter instead of lib? It seems the taico batteries use a bms very similar to my seplos where the protocol of the CAN port can be set depending on the inverter, but it is set to pylontech protocol as default.

Some people in the victron forum were struggling to get a similar taico battery working, but someone did get it set up.

https://community.victronenergy.com/questions/125321/taico-bms-not-detecting-by-ccgx.html

I would suggest contacting your battery supplier to get hold of the bms software mentioned in the post above and setting up PC comms over rs232. That will give you better access to manage the battery bank and bms etc. Then you will be able to see if the batteries are communicating with each other without having to rely on the inverter.

 

We will try to give a try?

9 hours ago, ibrahim007 said:

I need to reach voltronic support.

Voltronic don't seem to talk directly to end users. You seem to have to talk via your supplier (who are customers of Voltronic, effectively).

Edited October 1, 20223 yr by Coulomb

8 hours ago, Coulomb said:

Voltronic don't seem to talk directly to end users. You seem to have to talk via your supplier (who are customers of Voltronic, effectively).

Hi

i will try to change the protocol to Pylo and Victron from battaries using CAN-A type communication.

and check if current changing will be possible.

Although Pylontechs have both CAN bus and RS-485 ports, and Axpert hardware supports both, the firmware will only use RS-485 when the battery type is PYL. 

3 hours ago, Coulomb said:

Although Pylontechs have both CAN bus and RS-485 ports, and Axpert hardware supports both, the firmware will only use RS-485 when the battery type is PYL. 

Ah bummer! Thanks @Coulomb that's good to know.

@ibrahim007 it MIGHT be possible to run the battery comms from the RS485-1 port (next to CAN) on the battery to the inverter with the 'pyl' setting Most likely you will need a different cable as the pins for RS485 should differ from CAN on the inverter bms port.

10 hours ago, jumper said:

Ah bummer! Thanks @Coulomb that's good to know.

@ibrahim007 it MIGHT be possible to run the battery comms from the RS485-1 port (next to CAN) on the battery to the inverter with the 'pyl' setting Most likely you will need a different cable as the pins for RS485 should differ from CAN on the inverter bms port.

I have made the cable to support both CAN and RG485

 

as per battery R&D:

from battery side

pins-4 5 6(G)

from axpert inverter

pins 6 7 8(G)

however i missed to add the G pin in my cable

can CAN protocol work without G or not.

- second, do we need a terminator for batteries when we have parallel batteries connetion incase of CAN

according to Taico batteries they said to work with Axpert you have to select Victron option from battery- CAN then Pylontech at inverter and try

 

1 minute ago, ibrahim007 said:

I have made the cable to support both CAN and RG485

 

as per battery R&D:

from battery side

pins-4 5 6(G)

from axpert inverter

pins 6 7 8(G)

however i missed to add the G pin in my cable

can CAN protocol work without G or not.

- second, do we need a terminator for batteries when we have parallel batteries connetion incase of CAN

according to Taico batteries they said to work with Axpert you have to select Victron option from battery- CAN then Pylontech at inverter and try

 

 

Just now, ibrahim007 said:

 

CAN option A from battery to Voltronic option in inverter

who can confirm that?

26 minutes ago, ibrahim007 said:

CAN option A from battery to Voltronic option in inverter

who can confirm that?

 

By the way, I have just noticed that in this image the ports are upside down, so be careful when counting pins:

In the image the CAN port is on the left, but on the battery it is on the right, so pin 1 is far right on the battery.

 

4 hours ago, ibrahim007 said:

from battery side

pins-4 5 6(G)

from axpert inverter

pins 6 7 8(G)

These look like the correct pins for CAN comms. You can also use pins 1 & 8 on the battery side instead like in the victron image. I have not used CAN, so I am not totally sure, but for RS485 you don't need a G and you also don't need terminators, yon only need 2 wires. The last image you posted from the victron forum also suggests that only 2 wires are needed for CAN. Your CAN cable is probably fine though or the inverter would not have picked up the pack earlier and it would give a bms communication error.

4 hours ago, ibrahim007 said:

according to Taico batteries they said to work with Axpert you have to select Victron option from battery- CAN then Pylontech at inverter and try

You can certainly try that, but as @Coulomb noted above; when you select pylontech on the inverter it will use RS485, not CAN. I guess this is why you had used the 'Lib' setting with the CAN cable as that probably only uses CAN. If you want to use the 'pyl' setting then you have to use RS485.

If what Taico suggests doesn't work then I would try a cable with the RS485 pins from the voltronic image to RS485-1 (port B above) and select pylontech on the inverter.

Edited October 2, 20223 yr by jumper

16 minutes ago, jumper said:

Your CAN cable is probably fine though or the inverter would not have picked up the pack earlier and it would give a bms communication error.

I assumed you were using CAN because of the image flip in the manual, but I see you were using the RS485-1 port the whole time. I couldn't read the text in your photo originally and didn't realise they were flipped over. Sorry.

17 minutes ago, jumper said:

I guess this is why you had used the 'Lib' setting with the CAN cable as that probably only uses CAN.

That makes this assumption incorrect also.

Edited October 2, 20223 yr by jumper

8 hours ago, jumper said:

I assumed you were using CAN because of the image flip in the manual, but I see you were using the RS485-1 port the whole time. I couldn't read the text in your photo originally and didn't realise they were flipped over. Sorry.

That makes this assumption incorrect also.

Hi

@jumper, but you shared with me this link and it shows 

https://community.victronenergy.com/questions/125321/taico-bms-not-detecting-by-ccgx.html

and they said they used Victorn and Pylontech from voltronic with CAN and it works.

I asked Taico and they said it works.

@coloumb: is saying that it should be RG485. 
 

I need a solid answer, did anyone try the same setup like my setup

3 inverter Axperts king 2 with 4 Taico batteries or not?

i need a solid solution  to solve my issue, trying and trying, no one is telling something solid.

do I need Firmware?

do i need RG485 or CAN?

do I need Poly, LIB or other from inver?

do I need Victron, Darfon or any other setting from Taico?

why Taico does not test such setup at their end and close the story?!!!!!