RS450/200 control via Cerbo

DIY
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1

I have installed a rs450/200 to be controlled via a Cerbo, via the bms from the Pylontech batteries. I can see the Pylontech batteries on the cerbo (ve can port 2 - 500k/bs).

I have a cable from Ve.can port 1 on the cerbo to the Rs450, resistor at each end. The RS has been set as an “remote mode- 2 wire bus”. there is a tab under the expert tab “BMS controlled” but the RS unit will not start? in the cerbo on port 1 I have set to 250kbs.

Any ideas?

2

I guess you mean 2-wire BMS. This is only used when you use a BMS that only “communicates” via the the signals ATC/ATD. However you have the BMS connected over Canbus. So need to set this back to default. The MPPT is waiting on the physical ATC signal currently, as described in the manual