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Deye 48V 12 kW Hybrid Inverter: Modbus Control of Active Power Setpoint in Grid-Parallel Mode

ul-dsf

New Member
Joined
Oct 5, 2024
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Location
Dortmund, DE
Hi guys,

I just now hooked up my Deye sun-12k-sg04lp3-eu (12 kW 48V version) hybrid inverter to my BasenGreen 280 Ah DIY battery housings (PACE BMS inside).
The inverter is supposed to be part of a larger system and I want to control the active power that is taken from the grid to charge the batteries or fed back into the grid from the batteries via Modbus RTU command.

There is another thread on this forum from wich I downloaded the Modbus register table:
Modbus comms with (Deye) inverter
[Attachment]: Modbus table Version 118

Similar topic thread:
Deye hybrid inverter 10kW-12kW: Recharge Battery using Grid (Power/Energy Trading)

However, for live (open-loop) control of the active power setpoint, care must be taken not to cyclically overwrite a setting which is stored in EEPROM or flash memory as this could wear out the available write cycles very fast and brick the device.

Apart from faking a Modbus energy meter like the SDM630 on the meter port, does anyone know if there is a Modbus register for controlling the inverter in such a way?


Best,
Ulrich Lukas
 
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