Hi

I need the firemware to allow the charging current to be increased when LIB batery type selected and BMS is working.

what happened now, when we define the BMS as LIB with Taico batteries, charging current were limited to 30amp DC and makes the charging time higher.

 

also we need the firmware to fix the fluctuations or input source voltage from generator. This will help the inverter not to jump between bypass and charging when input voltage is not stable

so please we need a fireware to keep charging from input source even voltage is fluctuating 

17 hours ago, ibrahim007 said:

when we define the BMS as LIB with Taico batteries, charging current were limited to 30amp DC and makes the charging time higher.

I imagine that's what the BMS is specifying as the maximum charge current.

If the battery module(s) is(are) new, then they may be unbalanced, and need to charge slowly for a few cycles.

17 hours ago, ibrahim007 said:

also we need the firmware to fix the fluctuations or input source voltage from generator.

Axpert inverters are fairly picky about line (AC-in) wave quality. I don't believe that firmware will fix this issue.

I have a 50.02 main firmware from February 2022 (note: there is another one also called 50.02 from November 2021) that is supposed to fix "solar charging in ECO mode".

Edit: it's here:
 

 

Edited September 26, 20223 yr by Coulomb

1 hour ago, Coulomb said:

I imagine that's what the BMS is specifying as the maximum charge current.

If the battery module(s) is(are) new, then they may be unbalanced, and need to charge slowly for a few cycles.

Axpert inverters are fairly picky about line (AC-in) wave quality. I don't believe that firmware will fix this issue.

I have a 50.02 main firmware from February 2022 (note: there is another one also called 50.02 from November 2021) that is supposed to fix "solar charging in ECO mode".

Edit: it's here:
hi 

i need an help to see LIB option from watchpower app. when I go to battery type in watchpower app on my Iphone, I cannot see LIB option Br

br

 

1 hour ago, Coulomb said:

 

Hi 

Thanks for your feedback. 

Another issue, the application watchpower does not show me the option LIB but when I access the inverter manually i can see LIB option.

can you help in that.

 

Hi 

do you mean that for first cycles only, Battery will require a slow charging?

Br

 

LIB means lithium battery type under the battery type option in aplication

13 hours ago, ibrahim007 said:

the application watchpower does not show me the option LIB but when I access the inverter manually i can see LIB option.

can you help in that.

That's weird. I don't use Watchpower and have no interest in modifying it. Hopefully an update will fix this soon. Or maybe you can just change the battery type on the inverter itself, and Watchpower will still work. 

13 hours ago, ibrahim007 said:

do you mean that for first cycles only, Battery will require a slow charging?

Yes. An unbalanced battery will have one cell at higher voltage than others, and will increase even further in voltage with maximum charge current. 

But that should only affect the end of the charge, most of the charge should be normal speed, unless the battery stays nearly full most of the time. 

2 hours ago, Coulomb said:

Yes. An unbalanced battery will have one cell at higher voltage than others, and will increase even further in voltage with maximum charge current. 

But that should only affect the end of the charge, most of the charge should be normal speed, unless the battery stays nearly full most of the time. 

The problem that the inverter is not allowing me to increase the battery charging current when LIB is selected 

it always return the value to 30amp.

while when user is selected as battery type. Current can be modified to 90 amp.

so with BMS activated when LIB selected, so slow charging is recommended. Should we see more current with more cycles. How many cycles should I wait to see.

could it be that the LIB communication protocol at Inverter need to have software update/ why limiting the charging value?! 

17 hours ago, Coulomb said:

I imagine that's what the BMS is specifying as the maximum charge current.

If the battery module(s) is(are) new, then they may be unbalanced, and need to charge slowly for a few cycles.

Axpert inverters are fairly picky about line (AC-in) wave quality. I don't believe that firmware will fix this issue.

I have a 50.02 main firmware from February 2022 (note: there is another one also called 50.02 from November 2021) that is supposed to fix "solar charging in ECO mode".

Edit: it's here:
 

 

Thanks for sharing the firmware, what are the other benefits of this firmware, do you have more details on this software. Like release note document for such software

4 hours ago, ibrahim007 said:

The problem that the inverter is not allowing me to increase the battery charging current when LIB is selected 

it always return the value to 30amp.

It's expected behaviour that you can't change the maximum charge current unless you're using USEr battery type. The BMS over-rides setting 02.

But 30 A is pretty low for an LFP battery, unless it's 60 Ah (around 3 kWh). Maybe the battery modules (do you have more than one) are not talking to each other? Are they connected by data cables?

Maybe they are talking together, and there is a bug preventing the desired increase of maximum charge current, either at the battery end or the inverter end. LIB is not a very popular protocol at present, so maybe there haven't been enough field reports to iron out the inevitable bugs.

4 hours ago, ibrahim007 said:

do you have more details on this software. Like release note document for such software

Sadly. Voltronic don't bother with release notes. Occasionally, if I discover something while reading the firmware, I might comment on what I find, but that only covers a tiny fraction of the firmwares out there.

11 hours ago, ibrahim007 said:

Should we see more current with more cycles. How many cycles should I wait to see.

Current won't be dependent on cycles, it is more dependent on how empty or full the battery is. Check the current setting when the battery is empty and charging and see if it is set higher. The battery bms should be telling the inverter to step down the current as it gets full and updating this value as it goes.

On 2022/09/27 at 12:26 PM, Coulomb said:

It's expected behaviour that you can't change the maximum charge current unless you're using USEr battery type. The BMS over-rides setting 02.

But 30 A is pretty low for an LFP battery, unless it's 60 Ah (around 3 kWh). Maybe the battery modules (do you have more than one) are not talking to each other? Are they connected by data cables?

Maybe they are talking together, and there is a bug preventing the desired increase of maximum charge current, either at the battery end or the inverter end. LIB is not a very popular protocol at present, so maybe there haven't been enough field reports to iron out the inevitable bugs.

 

Attached are picture showing the data cables between each other

17 hours ago, jumper said:

Current won't be dependent on cycles, it is more dependent on how empty or full the battery is. Check the current setting when the battery is empty and charging and see if it is set higher. The battery bms should be telling the inverter to step down the current as it gets full and updating this value as it goes.

The charging of 30amp is low per inverter, i need to extend this as each battery is getting maximum of 17 amp when we divide 30amp*3 inverter/4 batteries. 

4 minutes ago, ibrahim007 said:

 

How can I enable LIB at watchpower app in inverter and what Voltronic can do to check of this is inverter issue with LIB types of batteries.

 

my battery type is Taico LifePo4, can I use different than LIB protocol to make it working 

1 hour ago, ibrahim007 said:

The charging of 30amp is low per inverter, i need to extend this as each battery is getting maximum of 17 amp when we divide 30amp*3 inverter/4 batteries. 

Perhaps the inverter is only seeing the 1 battery that is connected to it are you sure the top battery is communicating properly with the others below it? The markings on the front plate are difficult to read in the image, the blue cables might be in the wrong ports.

3 hours ago, ibrahim007 said:

Attached are picture showing the data cables between each other

Oh, OK, that's a monster battery. It should be able to discharge and charge at up to 400 A. So the BMS should be telling the inverters to charge at about 133 A each. So they might settle at say 120 A each. That would be 120 x 3 / 4 = 90 A per battery module.

They certainly seem to have their data cables connected. Though if they didn't, it would look like one module, with a 100 A maximum charge rate; divided by 3 and truncated to the next lowest multiple of 10 A comes to 30 A per inverter.

Does the inverter show 4 packs? Usually somewhere should show P04 G01 or similar, for 4 packs, one group. Maybe the DIP switches aren't correct? Maybe the master needs to have different dip switches than the slaves? Usually, the data cable to the inverter has to be connected to the master module. So the master should be on "top" in one photo, and on the left in the other?

3 hours ago, ibrahim007 said:

my battery type is Taico LifePo4, can I use different than LIB protocol to make it working 

You could try battery type = USE, and change all the battery related settings yourself. For example and in particular, setting 02 (maximum total charge current) = 120. Do not attempt any other BMS setting (PYL, WEC, etc). Assuming that LIB is the correct protocol for the Taicos.

2 hours ago, Coulomb said:

Oh, OK, that's a monster battery. It should be able to discharge and charge at up to 400 A. So the BMS should be telling the inverters to charge at about 133 A each. So they might settle at say 120 A each. That would be 120 x 3 / 4 = 90 A per battery module.

They certainly seem to have their data cables connected. Though if they didn't, it would look like one module, with a 100 A maximum charge rate; divided by 3 and truncated to the next lowest multiple of 10 A comes to 30 A per inverter.

Does the inverter show 4 packs? Usually somewhere should show P04 G01 or similar, for 4 packs, one group. Maybe the DIP switches aren't correct? Maybe the master needs to have different dip switches than the slaves? Usually, the data cable to the inverter has to be connected to the master module. So the master should be on "top" in one photo, and on the left in the other?

The dip switches

1/0/0/0 master

0/1/0/0 slave one

1/1/0/0 slave 2

0/0/1/0 slave 3

should all be the same like 0/0/0/0 in my case or not

RS485 protocol is used between batteries.

maybe based on my connections i need to make all dip switches the same to have one full pack as master

 

 

1 minute ago, ibrahim007 said:

The dip switches

1/0/0/0 master

0/1/0/0 slave one

1/1/0/0 slave 2

0/0/1/0 slave 3

should all be the same like 0/0/0/0 in my case or not

RS485 protocol is used between batteries.

maybe based on my connections i need to make all dip switches the same to have one full pack as master

 

 

The data cable connected from master inverter to master battery with dip 1/0/0/0! 
when i make it user, i can increase the current till 100amp per inverter. But i choose LIB i only can see 30

when i choose user, BMS is disabled 

when i choose LIB, BMS is functioning well. Treating the solar charging current properly but charging time is so long.

when charging starts at battery level of 40 to 50% at morning, its fine for me.

but when discharge is higher like 20% 

LIB setting is not enough. And battery charging time takes almost 7hrs 

4 hours ago, jumper said:

Perhaps the inverter is only seeing the 1 battery that is connected to it are you sure the top battery is communicating properly with the others below it? The markings on the front plate are difficult to read in the image, the blue cables might be in the wrong ports.

Why when user option as battery type selected , i can change the charging up to 100amp in each inverter?!

 

 

3 hours ago, Coulomb said:

Oh, OK, that's a monster battery. It should be able to discharge and charge at up to 400 A. So the BMS should be telling the inverters to charge at about 133 A each. So they might settle at say 120 A each. That would be 120 x 3 / 4 = 90 A per battery module.

They certainly seem to have their data cables connected. Though if they didn't, it would look like one module, with a 100 A maximum charge rate; divided by 3 and truncated to the next lowest multiple of 10 A comes to 30 A per inverter.

Does the inverter show 4 packs? Usually somewhere should show P04 G01 or similar, for 4 packs, one group. Maybe the DIP switches aren't correct? Maybe the master needs to have different dip switches than the slaves? Usually, the data cable to the inverter has to be connected to the master module. So the master should be on "top" in one photo, and on the left in the other?

   5 hours ago,  ibrahim007 said: 

Attached are picture showing the data cables between each other

Oh, OK, that's a monster battery. It should be able to discharge and charge at up to 400 A. So the BMS should be telling the inverters to charge at about 133 A each. So they might settle at say 120 A each. That would be 120 x 3 / 4 = 90 A per battery module.

They certainly seem to have their data cables connected. Though if they didn't, it would look like one module, with a 100 A maximum charge rate; divided by 3 and truncated to the next lowest multiple of 10 A comes to 30 A per inverter.

Does the inverter show 4 packs? Usually somewhere should show P04 G01 or similar, for 4 packs, one group. Maybe the DIP switches aren't correct? Maybe the master needs to have different dip switches than the slaves? Usually, the data cable to the inverter has to be connected to the master module. So the master should be on "top" in one photo, and on the left in the other?

Should I make the dip switches all as zeros as we are connecting each battery in parallel but all gathered at bus bar for +/-

so the master inverter is only seeing the master battery as it is with different dip switch and it could when all has same dip switch means same address, the inverter will see all batteries one master?! What do you think?

also the cables between batteries maybe need to be checked

2 hours ago, ibrahim007 said:

should all be the same like 0/0/0/0 in my case or not

Definitely not all the same, RS485 needs every device to have a unique address in order to communicate properly. The question is whether to set up the master battery on address 0 (slaves as 1,2,3) or address 1 (slaves as 2,3,4). On some batteries the master cannot be on address 0, it needs to be on address 1 to show that there are multiple batteries. Unfortunately this is not clear in the image you posted from the manual. You may need to try both options once we are sure the blue cables are in the correct ports. Also, when changing dip switch settings the battery needs to be switched off and on for the change to take effect.

2 hours ago, ibrahim007 said:

Should I make the dip switches all as zeros as we are connecting each battery in parallel but all gathered at bus bar for +/-

The dip switches don't affect the power connection, only the battery comms.

2 hours ago, ibrahim007 said:

so the master inverter is only seeing the master battery as it is with different dip switch

I think the inverter is only seeing the master battery because the master isn't seeing the slaves. What is supposed to happen is the master should collect all the info from the slaves over RS485 and then send the info to the inverter over CAN or whatever protocol runs on the port of that gray cable. I think the master is only sending info for itself to the inverter and that's why you only get 30A. The fact that you can't change the amps when lib protocol is selected on the inverter and you don't get any errors shows that the bms communication between the master and the inverter is working and correct, I think we just need to establish that the batteries can see each other.

Does your battery manual have any information on the connection of the RS485 comms between batteries (your blue cables)? Usually the cables should go from the RS485B port on the master, to the RS485A port of slave 1 and then a cable from RS485B port on slave 1 to RS485A port on slave 2 and then repeat to slave 3 and slave 4. the RS485B port on slave 4 will be left open (to possibly connect to another slave). Could you maybe provide a close up picture of what the labels are on the front of the battery? I looks to me like the cables in the slaves need to be switched around.

I would try that comms wiring and then try the 2 different dip switch configurations to see if that works. Otherwise post the info from the battery manual and we'll figure it out together.

27 minutes ago, jumper said:

Usually the cables should go from the RS485B port on the master, to the RS485A port of slave 1 and then a cable from RS485B port on slave 1 to RS485A port on slave 2 and then repeat to slave 3 and slave 4. the RS485B port on slave 4 will be left open (to possibly connect to another slave). Could you maybe provide a close up picture of what the labels are on the front of the battery? I looks to me like the cables in the slaves need to be switched around.

Looks like I may be incorrect here. I have found a manual for a different version of the taico battery and it looks like the bms cables are supposed to be connected like you have them:

It looks like they call it the Link port and it is also RS485. There is no other info except the image.

It looks like the dip settings from your manual image are also correct (master on 0):

I know this is not your battery, but this is the best info I can find: https://manuals.plus/taico/ts2400-lithium-iron-phosphate-battery-manual

 

Edited September 28, 20223 yr by jumper