Axpert?Infini Parallel Charging Questions

[Jaco De Jongh]

A question for the Axpert/Infini Parallel experts?

When i had one Inverter and 12x 260 watt panels the inverter could charge the battery's at 50A with ease and supply the load.(Being a 450Ah bank i only allow 50A max)

After I added my second inverter in parallel and devided the panels between the two invertors, I saw that the max charging amps i get is 30A. After playing around a bit with switching off the AC and even the load and even switching off the pv to the Master and then the slave, I realized that the pv connected to the slave is ignored when it comes to charging the Batteries. It only uses the PV connected to the master for charging. It uses the Slave PV for load, no problem , but not for charging.

I played around with the settings, but it makes no difference.

Anybody with a Parallel setup that can offer an explanation on why Axperts or Infinis will do this?

[Jaco De Jongh]

@TinkerBoy tried that also, makes no difference.

 

[Jaco De Jongh]

Master Shows 30A and 702 says that is true, Slave remains at 0, I just switched off the master all together ans then the slave becomes the Master, and charges the battery's from PV, no problem. It seems like a master Slave issue. Seem like only the master has got the right to charge the batteries from PV.

[Jaco De Jongh]

I have done it that way, tried different settings and combinations between master and slave, nothing made a difference. Even if I switch the pv to master off, the slave does not take over the charging function. I have to switch the master off completely for the slave to take over the charging. (But only because it then becomes the Master)

[Jaco De Jongh]

Will do, just give me a few minutes. I take you want to see the settings page.

[Jaco De Jongh]

Master:

 

Slave:

[Jaco De Jongh]

Nope, I am messing around with the settings, I want it to charge at 50Amp, but because the slave does not do its part, I am trying different settings to see if I can get it going.

When charging with AC there is no problem, So I can select 10 Amps from the One and 10 from the other to make a total of 20 Amps, so that part I understand. But it does not do that from PV.

[Jaco De Jongh]

@TinkerBoy thanks for the help,  that setting 31 is not available on the V-series.  As I tested and played today I also saw thas there is a problem with Ac charging while pv is available.  It will not initiate ac charging while pv is sensed.  It will only allow ac charging if I switch the pv off.  No matter "solar first"  or "solar and grid"  setting.  

You will not believe what solved the issue,  switched both pv off,  switched both inverters off,  switched everything on,  problem gone.  Sharing pv for charging now,  and reacts to ac charging settings.  

Seems like one of the units got confused somewhere and the system just required a restart.  

Thanks again for your time and effort.  

[___]

4 hours ago, Jaco de Jongh said:

I just switched off the master all together ans then the slave becomes the Master, and charges the battery's from PV

That is TOO well-defined a result to be by accident. I wager it is a "feature" of the V-series.

[Jaco De Jongh]

@plonkster, I agree,its definitely not by accident, I just used it as an example of what i needed to do to get the second unit to  charge using the PV. For some reason only the Master used PV  to charge the battery's, but after a complete restart on both, the Master and Slave contributes to the total charging amps. I am glad it worked out this way, I got worried for a moment, thinking that only the Master in the V-series setup are allowed to charge the batteries. That would have been a bitter pill to swallow. Having 2 Inverters, 2 sets of PV modules, and only one could charge the batteries. 

Something like that can have anyone jump the fence to the blue side.