Roving-Ronin
commented
6 months ago Some new information released at: https://solar.huawei.com/en/professionals/all-products/HUAWEI-SmartGuard
Instead of previously having to deploy a Backup-Box and a DDSU/DTSU-666H meter (and optional SmartLogger), the EMMA product is now included as part of the SmartGuard, providing 'Smart' functions and also the ability to shed load (via Shelly PM/Pro devices). Looking at the User Manual and the wiring diagrams, this however appears to remove the option of using CT's to monitor the power (as the standalone EMMA allows for), with the SmartGuard having the inverter, backed up and non backed up loads and a connection for the grid to be connected to it, Huawei designed it so the EMMA is intetgrated into these connections.
Describe your feature request
As per the EMMA feature request, this 'issue' is intended as a placeholder to allow the gathering of information and discussion re the forthcoming SmartGuard-63A- S0/AUS0 (also referred to as 'BackupBoxA' on Huawei Support Site), that will supercede the current BackupBox device, that provides automatic grid outage failover for LUNA ESS users, with the provision of a single protected phase.
As per the other new products, this will require the release of the modbus register definitions for this product, at which stage we can see if they are the same as the current BackupBox, potentially meaning WLCRS will be 'out of the box' compatible with the SmartGuard, or if additional effort would be required to support it. At which point review of the registers would need to be done and put forward to see if any provide any useful functionality, or not.
Documentation available currently: BackupBoxA V100R023C10 Communication Matrix.pdf BackupBoxA V100R023C10 Open Source Software Notice.docx BackupBoxA V100R023C10 Release Notes.pdf BackupBoxA V100R023C10 Security Maintenance Manual.pdf BackupBoxA V100R023C10 Upgrade Guide.pdf
Note: From the communication matrix above, it already confirms that the SmartGuard connects via RS485 to the EMMA device, that in turn connects via RS485 to the inverter(s) / LUNA. Additionally the SmartGuard enclosure includes a DIN rail for mounting the EMMA inside of it (though you can install EMMA without a SmartGuard, for non LUNA users). From this it appears that in future installations of LUNA that want to operate in an off-grid/outage situation, will be expected to deploy Inverter(s)+LUNA ESS+EMMA+SmartGuard by default.
Proper usage