Studer Innotec SA
RCC-02/-03
40 V4.4.0 User manual
14.7.4 Smart boost authorized
{1126}
The function Smart-Boost enables to add
power from the batteries to the one
supplied by source connected to the AC-In
when the user load is higher than that, set
by the parameter {1107}, as a maximum
input. This function is active by default.
When the battery comes close to
undervoltage the smart- boost function is
gradually reduced in order to avoid a
power-cut of the Xtender. The reduction
range is 0.25/0.5/1V in installations of
12/24/48V.
14.7.5 Authorized inverter {1124}
This configuration authorizes operation in inverter mode. If the inverter is deactivated, a voltage will
be present on the output terminals (AC-Out) only if a correct voltage is present at the input (AC-In)
and the transfer is not prohibited.
This function can be used for supplying non-critical consumers while ensuring that the
battery is not discharged even if the source is faulty.
Note, that if the Smart-Boost function is activated, it is possible to discharge the
battery even if the inverter function is locked.
Where there is lock on the inverter, charger or transfer
function, a small padlock is displayed on the
configuration display.
14.7.6 Type of detection of the grid loss (AC-In) {1552}
The disappearing of the input voltage (AC-In) leads to the transfer relay opening and to the inverter
activating. This detection works in three possible speeds.
The function « slow » suits specially well the small generators but may create microcuts on the grid at
the output (AC-Out) during commutation. This function will let some fluctuation of the input voltage
and frequency before reacting.
The function « fast » fits very well with sensitive loads that require few or no cut to work.
The function « tolerant » lies in between and its sensitiveness can be set with the parameter {1510}. In
this way it is generally possible to use small generators also with loads sensitive to microcuts.
When the Smart-Boost function is active, it is possible to discharge the batteries, even
if the Xtender is connected to a source and the charger is active.
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