Mennekes ACU Instructions D'installation page 55

Load balancing with reduced available total current
through the downgrade input
The load balancing is also possible without the control
via the downgrade input.
The downgrade input is only available on an ACU v4.
If under certain conditions or at certain times, the maximum
available total current is not available for all charging points
connected to the ACU (available total current (HT)), the
available total current (HT) can be reduced via the
downgrade input.
For example, you can control the downgrade input by the
following criteria or systems:
 Electricity rate
 Time of the day
 Load shedding
 Manually
In case of Smart T charging column, control via the
downgrade input is not possible.
To control via the downgrade input a floating switch contact
is required, which must be installed externally.
 For installation, observe the operating and installation
manual of the device.
ACU Administration – Load Balancing
The values for the individual minimum and maximum
charging current are determined based on the parameters of
the connected SCUs.
Depending on the version of charging points, the following
charging currents are applicable:
 The maximum charging current of the individual
charging points depends on the fuse design and 16 A or
32 A configuration or on an individually configured fuse
value (parameter "Fuse (Max Current)" set in the SCU
settings, see chapter "Settings" on page 11.
 The minimum charging current for charging points with
a SCHUKO® socket is 13 A. The charging current
cannot be limited since there is no communication with
the vehicle.
 The minimum charging current for charging points with
type 2 socket is 6 A. The charging current can be limited
by communication with the vehicle from the SCU.
EN
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