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This thread is for all the details of our new 'Split Sync' mode that we offer on all our GS inverters. This topic will be updated by myself and Sid with all relevant info pertaining this new mode.
In basic terms, the Split Sync mode allows you to run 2 inverters together that will share the load of a 240V service panel. It is similar to daisy chain but is a preferred method when running just 2 inverters. It allows you to double your surge and load capabilities assuming you have a well balanced service panel.
Each inverter acts like a Single L coming into the panel and they operate 180 degrees out of phase from each other.
There is a downside to this mode. If you have purchased a GS inverter you will need to send it in (or do yourself by breaking warranty) because the inverter needs to be rewired for 120V regardless of if you chose to have 120v inputs. If your plan is to run in split mode and you have not purchased an inverter then it can be setup here. Another Downside is you can only run with 2 inverters. So if you plan to have 3 or more inverters then this mode would not work for you and daisy mode would be the only option.
The picture below shows 2 inverters setup for Split Sync mode.
S = Slave Inverter (Inverter must be set to "Split Sync Slave" in the LCD)
M = Master Inverter (Set as Normal)
N = Neutral
E = Signal Patch
L1 = Line 1
L2 = Line 2
NN + NN are tied together between the 2 units.
E + E are tied together between the 2 units. M L1 + S E
L2 + L2 are NOT tied between the 2 units but rather tied together at the inverter to give full output
L1 + L1 are NOT tied between the 2 units but rather tied together at the inverter to give full output
N + N are tied together between the 2 units.
Your L1, L2, N would lead to the breaker panel in much the same way a 240V Split phase inverter would.
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Edit by Sean : Fixed the OP to reflect the correct info.
EDIT: "E" "E" as pictured do NOT get tied together. "E" is the input AC signal line.
For the master inverter, you can either connect this to a generator input (120v only), OR you can put the master inverter in "master split-sync mode", and connect this input to the "L" output of the slave inverter. In this setup, the master inverter will shut down if it detects the loss of a feedback signal (i.e. "slave" inverter shut down for whatever reason.)
For the "slave" inverter, this "E" terminal goes to the "L" output of the master inverter; this is the sync input signal, which the "slave" offsets by 180 degrees.
1 hour ago, Sid Genetry Solar said:EDIT: "E" "E" as pictured do NOT get tied together. "E" is the input AC signal line.
For the master inverter, you can either connect this to a generator input (120v only), OR you can put the master inverter in "master split-sync mode", where it will shut down if it detects the loss of a feedback signal (i.e. "slave" inverter shut down for whatever reason.)
For the "slave" inverter, this has to go to the "L" output of the master inverter; this is the sync input signal, which the "slave" offsets by 180 degrees.
Oy. confusing much. . . Sean post really thrown me for a loop. . . and Sid yours just did too.
EDIT: "E" "E" as pictured do NOT get tied together. "E" is the input AC signal line.
Please show photo of the 2 GS 120vac inverters wired as split sync mode .
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Here's the best I have for that. Notice that there are 2 "L" and 2 "N" outputs for each inverter, this paralleling is necessary for the 50A total at max load. Wires are rated for the 25A max load @ 240v, so when we go to single-phase, the full output load at 120v is 50A.
Sync wire is the green one; that provides the "sync" signal to the slave inverter to follow. The unused terminal on the "master" inverter is the 120vAC input.
EDIT: Just realized this is an older photo without the stickers. Master inverter is on the right, slave inverter is on the left.
Slave always label L2 and master always label L1 . E on slave always go to L1 on master . L1 on slave go to breaker panel and L2 on master go to breaker panel and one neutral wire from either slave or master go to breaker panel . Never connect E from master to L2 or bad thing will happen I think . Thank you .
Oy. confusing much. . . Sean post really thrown me for a loop. . . and Sid yours just did too.
Sorry I put the sticker in the wrong spot and neither Sid nor I noticed till this post. It is correct on the video though.
EDIT: "E" "E" as pictured do NOT get tied together. "E" is the input AC signal line.
Corrected the photo above
Never connect E from master to L2 or bad thing will happen I think
You can connect E from master to L2 (slave L) if the master is configured for "master split-sync" mode, in which case the signal becomes a "stay on" signal. (If it's in Normal mode, it'll really get confused trying to sync to this 180-degree offset wave.)
"master split-sync" mode, in which case the signal becomes a "stay on" signal.
Many different programs in wifi board and need to be careful . Thank you .
When you do your Manual. . . *cough* Might want to make sure you have a big clear with correct wire color picture for those who can't read. . . And Correct Wording for those who follow everything to the letter. . . *Evil Grin*
Also, I would personily change the E to a S for the letter Sense wire. or SW if you going to slap a sticker on the terminal to indacate this. Not Many going to know what E is.
Yeah, when....
Currently loading up a PCB manufacturer's cart with 9 separate PCB designs that need prototyped before sending them off to production...
...oh, and revising a few of the designs while I'm at it.
When you do your Manual. . . *cough* Might want to make sure you have a big clear with correct wire color picture for those who can't read. . . And Correct Wording for those who follow everything to the letter. . . *Evil Grin*
The stickers were for you only basically to help your electrician hook it up. I used some old power jack stickers I had laying around to label everything for you. I did not have a big letter S in the sticker pack. For everyone else they will need to read the manual since I don't want to put stickers all over our inverters and turn them into power jack.
E to me is like Equipment.
Ah. Well E still could mean Earth Ground too. like Equipment ground.
Not sure how hard it would be, maybe on the next order, have some plates made with the split phase lettering setup on it and one wit the normal, and you can just change out the plate when somebody orders it that way.
The inverts are out for delivery right now by the way.