EG4 FlexBoss + GridBoss + Tigo CCA

[lkdiaz]

I just talked with SS tech support and they told me External RSD +24 / Ground for CCA.

My installers are working it now and should finish Friday. I have the GridBoss, FlexBoss and two indoor wallmount EG4 batteries.

Seems to be conflicting word. Jess at Signature Solar, this might be something to get an official answer on.

If you're installing the system this should be pretty easy to confirm. Activate internal RSD in FlexBOSS and verify whether there's power present at Po/G and at +24/G.

Also, can you post a picture of where Po and G are at? I'm not seeing them in the manual.

 

[SignatureSolarJess]

Hi! On page 29 of the grid boss manual it shows a diagram to wire in an optional external rsd. If you need any further assistance, you're welcome to reach out to the tech team at 903-441-2090 and we'll do all we can to help!

 

[lkdiaz]

Hi! On page 29 of the grid boss manual it shows a diagram to wire in an optional external rsd. If you need any further assistance, you're welcome to reach out to the tech team at 903-441-2090 and we'll do all we can to help!

Hi! What page 29 appears to show is how to connect an emergency stop between FlexBOSS and GridBOSS. What it doesn't show is precisely where I'm confused which is how to interface that so that we also trip a Tigo CCA. What I think we all need is that same drawing that also shows how to include the CCA.

 

[TacoMeat]

Any updates on this? Would be really nice to see an RSD doc for the Flexboss / Gridboss like they have for the 18kPV.

 

[Brazos94]

Hi! On page 29 of the grid boss manual it shows a diagram to wire in an optional external rsd. If you need any further assistance, you're welcome to reach out to the tech team at 903-441-2090 and we'll do all we can to help!

Jess, is there a diagram showing how to wire the Tigo CCA to stop button, Gridboss, and Flexboss?

 

[SignatureSolarJess]

Yes, looks like the CCA is going to be powered by the inverter, but I think it's best you call in to clarify the terminals you will need to use.

https://eg4electronics.com/wp-content/uploads/2024/08/FlexBOSS-21-Manual.pdf

https://eg4electronics.com/wp-content/uploads/2024/07/EG4-Grid-BOSS-User-Manual.pdf

 

[Brazos94]

Yes, looks like the CCA is going to be powered by the inverter, but I think it's best you call in to clarify the terminals you will need to use.

https://eg4electronics.com/wp-content/uploads/2024/08/FlexBOSS-21-Manual.pdf

https://eg4electronics.com/wp-content/uploads/2024/07/EG4-Grid-BOSS-User-Manual.pdf

View attachment 276121

Can I call in and ask for you on this?

 

[SignatureSolarJess]

Can I call in and ask for you on this?

I wish, I'm not in tech support anymore. The tech team can find the documentation and help you figure that out though!

 

[TacoMeat]

Would love if they had a detailed RSD TSB or Whitepage.

 

[jrkd2015]

Does anyone have updates on the correct wiring of the RSD and Tigo? thanks

 

[TacoMeat]

I was wondering the same thing.

My understanding is you run SW and +12 from Gridboss to SW and +12 on the Flexboss, then run G and +24 on the Flexboss to your CCA PWR - and +.

Then when you press a RSD button on Flexboss OR RSD switch on Gridboss it would initiate a complete ESS shutdown *Assumes closed circuit comms* (battery breakers flip, Flexboss pulls power, which in turns pulls power from CCA which then kicks off a RSD shutdown on the Tigo modules (due to loss of TAP comms), also Gridboss flips breakers.

Need to test when I get everything setup but this is how I understand the setup currently.

 

[unexpected]

Hi all, I just completed an install of the GridBoss and FlexBoss21 and can confirm that in an RSD event, the power to the +24V is disabled.

I am curious if the Tigo CCA should/can have a modbus connection to the inverter.

What would be benefit of this? Any in a single string setup?
- https://support.tigoenergy.com/hc/e...us-Connected-Devices-Inverters-Meters-Sensors