alfen Eve Single Pro Series, Manual, Page: 28 / 35

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Eve Single manual | Version 4.2 | December 2021
ENGLISH
The Eve Single charging station has the following Smart
Charge options:
1. Active load balancing: this offers the same functionality
for managing charging speeds as the default load balan-
cing in double charging stations. Managing the maximum
charging current now, however, is a dynamic process.
The charging station communicates with the smart
meter in your installation or home and takes the current
usage and maximal capacity of your grid connection into
account.
2. Smart Charging Network (SCN): When activated, Alfen
charging stations will recognise each other within a
local network, a so-called charging plaza. In that case,
the local grid settings are shared between the charging
stations. Together, the charging stations decide how
much power each outlet - provided a vehicle is connec-
ted - will be allocated. To simplify the order process of
smart charge functionalities, a number of parameters
have been provided with default settings. This appendix
provides the values of these settings. If your installation
needs different settings from these defaults, use the
Service Installer to configure the charging station for
your specific situation.
B.1. Active load balancing
Requirements for the installation:
• Alfen charging points with activated Active Load
balancing functionality.
• Communication cable with 4-veined RJ11/RJ12
connectors.
• Smart meter supporting one of the following
protocols:
- DSMR or eSMR over a P1 port
. See datasheets
for the supported versions of this protocol.
- Modbus TCP/IP: the charging station will assume the
role of the Modbus Master in this configuration.
The smart meter is the Slave.
NOTICE!
Alfen recommends a maximum cable length of 20 metres,
combined with the P1 port. Always check if the communi-
cation with the smart meter is working properly. The quality
of the signals depend on several factors. Therefore, always
limit the cable length to prevent risks concerning the signal.
Alfen ICU B.V. is not liable for continuous and correct ope-
ration of the connection to the P1 meter and the quality of
the transferred signals.
The charging station and the smart meter communicate
via the P1 port. For this, the DSMR protocol is used (for
supported versions, see datasheets on alfen.com
). Periodi-
cally, information on current usage is exchanged. When the
meter capacity is reached, the charging station will adjust
the connected vehicle. This prevents the installation from
overloading, otherwise the cost of the grid connection will
unnecessarily go up. This functionality effectively makes
for 'peak shaving', it controls the power supply during peak
moments.
If the P1 port of the smart meter is already occupied by
another device, you can use a splitter. For advice on split-
ters, please contact your dealer.
NOTICE!
Not all splitters can be used. 2-veined connectors cannot
be used. In that case, your charging station might not be
able to communicate with the smart meter. Alfen is not
liable for continuous and correct operation of the
connection to the P1 meter if this has multiple devices
and/or splitters attached.
To set up the active load balancing correctly, set the
following parameters:
• Station-maxCurrent; This limits the maximum current on
the charging station group.
• SmartMeter-maxCurrent; This is the capacity of your
grid connection. When in doubt, check this with your grid
operator.
• Load balancing safe current (A): the value of the current
that remains available for the charging station (or char-
ging plaza) when the connection between the energy
meter and the charging station is lost.
APPENDIX B: DEFAULT SELECTIONS FOR
OPTIONAL FACTORY SETTINGS