Functions
Overview The Wattpilot can be used like any other charging station. For start-up, the char-
ging cable must be plugged in and the Wattpilot starts charging. By pressing the
pushbutton (see Pushbutton functions on page 15) it is possible to switch
between the charging modes (see Different charging modes on page 26) and
change the level of charging current (see Current level on page 49).
Phase
changeover
The Fronius Wattpilot can automatically switch between 1‑phase and 3‑phase
charging. The automatic phase changeover enables charging with a low start-up
power (1‑phase with 1.38 kWh) in the case of a PV surplus. In addition, 1‑phase
charging has the advantage that the charging power can be regulated in smaller
increments (0.23 kW) and a small PV surplus can be used more efficiently. As
1‑phase charging is limited by the car, it makes sense to switch to 3‑phase char-
ging at a higher PV surplus. This allows higher maximum charging outputs to be
achieved.
The phase changeover can be set automatically or manually (see PV surplus on
page 22).
NOTE!
Do not exceed the phase‑load imbalance!
Select the phase changeover point in such a way that the maximum permissible
phase‑load imbalance is not exceeded.
PV surplus
NOTE!
A minimum charging time of 5 minutes is stored.
To prevent permanent switching of the relays and to increase the service life of
the Wattpilot, a minimum charging time of 5 minutes is stored.
The surplus energy of a PV system (photovoltaic system) can be used. The pre-
requisites for this are a compatible inverter in the same network as the Wattpilot
and a Fronius Smart Meter (for more information, see Data communication with
the inverter on page 40).
Setting limit values ensures that the available PV surplus power is distributed to
the loads. The limit values created allow an energy storage system to be suffi-
ciently charged or the energy to be stored in the form of hot water before the
surplus PV power is used to charge a vehicle.
NOTE!
PV surplus regulation.
One Wattpilot per photovoltaic system.
▶
The PV surplus regulation works with one Wattpilot per photovoltaic system.
▶
If several Wattpilot devices are connected to one inverter, "Use PV surplus"
may only be activated on one Wattpilot. For all other Wattpilot devices, "Use
PV surplus" must be deactivated (for more information, see Cost optimisa-
tion on page 49).
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