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Product functions
4.11 Digital inputs
A charging process can be authorised via an external device. The external
device can be connected to the digital inputs of the EV charging box.
Each EV charging box contains digital inputs (12 V DC) on the control
board on connection terminal X6, the function of which can be individually
configured in the web server. One digital input can be configured for the
ECO product line. Five digital inputs can be configured for the VALUE and
ADVANCED product lines. The following configurations are possible:
Charging authorisation
A charging process is authorised via a switching signal (high signal) on the
digital input (external charging release, e.g. using a key switch). Authorisation
is active only with a logical 1 at the input. If there is a logical 0 at the input,
there is no authorisation. An active charging process is ended and no new
charging process is started.
Current limitation
A reduction of the charging current can be set for each input.
If the digital input is active, the maximum charging current according to
the setting is made available. When the setting is at 100%, the maximum
charging current is used; when the setting is at 0%, there is no charging at all,
and any active charging process will pause. If multiple current limitations are
active, the limitation with the lowest charging current is effective.
Input monitoring
Monitoring of the digital inputs can be activated if necessary. A digital input
with the function current limitation must display a logical one; otherwise, the
EV charging box will display a fault.
4.12 Load/charge management
Load/charge management regulates the simultaneous charging of vehicles
at multiple charging points. The charging points must be networked together
for this function to be used. One EV charging box is configured as the control
box in each charging network, and all other boxes as satellite boxes. The
maximum charging current available for the entire charging network is distrib-
uted over the released charging points according to the specified parameters.
Load peaks, blackouts, and imbalances are avoided.
To start a charging process, each EV charging box requires at least 6 A
charging current. If charging processes are already active in the charging
network, and less than 6 A charging current is available for another vehicle
to be charged, then this last connected vehicle is placed on a waiting list.
Once the minimum charging current is available once again, the charging
process for the last connected vehicle is started automatically. The charging
processes are started in the sequence in which the vehicles were connected
to the charging network.
Depending on the product line and technical requirements, static, dynamic, or
external load/charge management can be implemented.
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Operating instructions – AC SMART
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