EG4 6500EX Install wiring question

[Gavin Stone]

So still working on the firmware update issue. However I have more issues.

When charging from the grid, AC in, the batteries don't charge. I left it running for a week and it didn't charge the batteries at all. Granted I was only letting it run from one inverter. It was suggested that I need to have two inverters to charge the battery from grid, is this right?

Another problem, when I turn on the second inverter, it gives me an alarm with code 61. I have the communication cables connected to the first inverter, the one I was using to charge them. I also have the black and red wires, as well as the DB9 connectors between the two inverters. I can't figure out what is wrong with it, I'm hoping that a firmware upgrade will solve this.

If you have 2 inverters running in split phase, you wouldn’t use the black and red current sharing cables.

 

[jbkrntrprz]

So still working on the firmware update issue. However I have more issues.

When charging from the grid, AC in, the batteries don't charge. I left it running for a week and it didn't charge the batteries at all. Granted I was only letting it run from one inverter. It was suggested that I need to have two inverters to charge the battery from grid, is this right?

Another problem, when I turn on the second inverter, it gives me an alarm with code 61. I have the communication cables connected to the first inverter, the one I was using to charge them. I also have the black and red wires, as well as the DB9 connectors between the two inverters. I can't figure out what is wrong with it, I'm hoping that a firmware upgrade will solve this.

Welcome to the world of the EG4 6500EX-48! I just returned my 2 for store credit. Got 2 6000XPs paid for, awaiting shipment.

 

[Adam De Lay]

So still working on the firmware update issue. However I have more issues.

When charging from the grid, AC in, the batteries don't charge. I left it running for a week and it didn't charge the batteries at all. Granted I was only letting it run from one inverter. It was suggested that I need to have two inverters to charge the battery from grid, is this right?

What do you have set for options 11 and 16?

The grid charging functions are independent of each other on the 6500s. I had mine all set to only have 1 inverter charge from grid (you still have to have grid installed to each inverter though).

Another problem, when I turn on the second inverter, it gives me an alarm with code 61. I have the communication cables connected to the first inverter, the one I was using to charge them. I also have the black and red wires, as well as the DB9 connectors between the two inverters. I can't figure out what is wrong with it, I'm hoping that a firmware upgrade will solve this.

Usually you get Error 61 on 2P2 because you have option 5 set to EG4. When you have a split phase setup with the 6500s and you want to have battery communications, your battery cable should be plugged into 2P1. Option 5 on 2P1 should be EG4 and option 5 on 2P2 should be USE.

As Gavin said, you don’t need the Red/Black twisted wires when you have just 2 inverters. Those are used when you have multiple inverters running in parallel on a single phase/leg (120v).

 

[Jared123]

Thanks for the advice! Moving forward! Changed 2p2 option 5 to USE. Alarm went away. Also removed the black and red cables.

Option 11 is UEI? at 30AMPS
Option 16 is SNU

 

[Adam De Lay]

Thanks for the advice! Moving forward! Changed 2p2 option 5 to USE. Alarm went away. Also removed the black and red cables.

Option 11 is UEI? at 30AMPS
Option 16 is SNU

Good deal.

What do you have set for option 1? If I recall, the inverter will only charge from grid if your in a “utility mode”. So you have to be in USB or SUB (or even be in the “U” of SBU because your batteries have gotten to low).

 

[Jared123]

I have them set to SBU. Looked at them this morning, and it looks like the batteries are charged! Woohoo! This summer, I'll work on getting the solar setup. Thanks again!