SMA EV CHARGER 7.4 Manual De Operación página 22

4 Product Overview
4.5.2 Communication Overview
GRID OPERATOR
RIPPLE CONTROL
RECEIVER
VEHICLE
Figure 6: Design of system communication
4.6 Multi-EVC operation
Multi-EVC operation is supported from firmware version 1.02.##.R and allows the connection of a
maximum of 3 SMA EV Chargers. Mixed systems with single-phase charging stations
(EVC7.4-1AC-10) and three-phase charging stations (EVC22-3AC-10) are possible.
In multi-EVC operation mode, all charging stations must be connected to the utility grid on a rolling
basis.
The Sunny Home Manager provides the charging stations with information on the number of active
charging stations every minute.
In multi-EVC operation mode, if multiple charging stations are charging a vehicle and there is a two-
phase charging vehicle among the vehicles, this vehicle is limited to single-phase charging for
symmetry reasons.
22 EVCxx-10-BE-en-11
SMA APPs SUNNY PORTAL
SUNNY BOY
SMA
EV CHARGER
INTERNET
ROUTER
HOME MANAGER 2.0
SWITCH
SUNNY BOY
STORAGE
SMA Solar Technology AG
Public Internet
Ethernet LAN
Ripple control signal
Digital signal
AC
CAN
Radio
SUNNY
BATTERY
Operating manual