How to set static import and export on 3 Phase MultiPlus-II 48/5000/70-95 120V

DIY
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1

I have a 3 phase 120/208V setup of MultiPlus-II 48/5000/70-95 120V on the latest firmware with Cerbo GX. I do not have any external meter and it is difficult to install one, so I am trying to setup very simple important and export rules.

All I want the system to do:

  1. Import 10kW from the grid from 9A-4PM until battery is full.
  2. Export 10kW from the grid from 4PM-9PM until the battery is empty.

Anyone know how to do this? I have tried the ESS assistant, but I don’t think it can do this?

Thanks!

2

I’m far from an expert, but… I’d try to set the grid setpoint accordingly in ESS, that should be possible via ModBus or MQTT or NodeRed, and go from there.

3

I got the Node Red set up, but changing the Grid set-point from 30W => 1000W or -1000W doesn’t do anything. Any one else know what might cause the system not to react to grid set-point change?

4

Have you set on the GX under ess feed in from dc enabled? You can also limit feedback there and set your min SOC
If you have a shedules for feedback and charge do that with node red.