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Functions
5.5
Integration of external meters
The charging station can read the measured values from external meters us-
ing Modbus TCP. This allows an intelligent calculation of the charging cur-
rent provided to the vehicle, and the charging process is optimized. The
measured values read are included in the charging current specification. The
following graphic shows the schematic structure of the system.
Fig. 5-8: Modbus TCP system overview
Information
The illustration provides an exemplary system overview and does not in-
clude all the necessary ancillary equipment required for safe operation of
the equipment (e.g. line circuit breaker, residual-current device ...).
Domestic Connection Monitoring
By means of the domestic connection monitoring, the charging vehicle can
be dynamically provided with the respective available charging current, de-
pending on the remaining consumers on the house connection. This ensures
that the domestic connection safety device is not overloaded, and that it is
not always necessary to select a lower charging capacity than would be pos-
sible with the vehicle and the installation.
Via the meter 5, the charging station can read out the entire current energy
supply from the power grid. Based on this information and the value of the
post-meter fuse
84
1
... Public power grid
3
... Electricity meter of the network op-
erator
5
... External meter (house connection
meter)
4
(maximum charging current, which is specified by the
xChargeIn M Series
2
... Pre-meter fuse (high-capacity fuse,
line circuit breaker, ...)
4
... Post-meter fuse
Configuration manual V1.04
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