ETI EV PLUS Serie Manuel D'installation page 45

For additional information about how to configure the power management mode and
about the meter device to be used please refer to the
ETI_EV_PLUS_Power_Management_ENG.pdf" addendum document
Important note: the loads are higher priority compared to the EV battery charging
process.
11 Load balancing
Up to two chargers can be connected together to the same supply network, with the possibility
to share the overall amount of power, between each other and all the other loads supplied by
the same network.
The limit of two chargers is due to the maximum rated current of the external power meter
(i.e. in case of 32A charger and 80A rated meter two chargers are allowed.
The charger which is considered as the process master is connected to the external power
meter, through its RS-485 interface, see paragraph 10.
The other chargers are connected to the master charger and with each other's, by means of a
CAN BUS interface. See the picture below for the application scheme.
In this configuration the master charger informs the other chargers about the overall amount
of available power to share between the parallel charging processes.
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February 2023