9
AUX port management
The AUX port is always available whenever AC is connected or at
least one battery is present and with a voltage greater than
12500mV.
Working without AC
When operating without AC the available power on the AUX port is
limited by the power of the installed batteries but up to a controlled
maximum of 8A.
The AUX output is always in parallel with one battery at a time. If
two batteries are connected, they are discharged sequentially up to
a bottom limit of 12500mV. When this threshold is reached by the
first battery, the load is automatically connected to the second
battery without interruption.
Working with AC
When AC is present and no batteries are installed, the power
available on the AUX port depends on the fan state:
-
with fan set ON - 14.5V regulated @ max 6A
-
with fan set OFF - 14.5V regulated @ max 4A
On the other hand, whenever a battery is connected in charge, the
max available power on the AUX port depends on the power of the
installed battery since if the load on AUX exceeds the available
current, the extra power is provided by the battery that in such case
is getting discharged. The maximum current is capped @ 8A.
When a battery is in charge and the AUX is powered, it has to be
noted that:
-
AUX takes priority
-
The available current is shared between the battery on charge
and the load on the AUX port. Therefore, the charging current is
reduced when the AUX is draining power.
-
If the AUX port demand is less than the current that is able to
be drawn from the charger then the remaining current will be
used to charge the battery
-
If the AUX port demand greater than the current that is able to
be drawn from the charger then the battery will go into
discharge to supply the rest of the demand
See the technical specifications on page 11 to understand the
different current handling under different conditions.
