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18 Freedom SW Owner’s Guide
Freedom Inverter/Charger Operation
• AC wiring is of recommended size. Refer to the Freedom SW
Sine Wave Inverter/Chargers Installation Guide for this
information.
• Battery is of sufficient capacity and is fully charged.
NOTE: Many 24 V inverter battery banks have a capacity between
200–400 Ah and 12 V inverter battery banks have a capacity
between 400–800 Ah. Refer to the Freedom SW Sine Wave Inverter/
Chargers Installation Guide for sizing requirements.
Operating Limits for Charger Operation
By default, the maximum charger output current is the rated charger
output current for the particular model. Using the SCP, you can
reduce the total output if you change the maximum charge rate (Max
Chg Rate) on the Freedom SW Basic Settings menu or Inverter
Settings menu under Advanced Settings.
The charger can operate within an AC input range of 95–135 volts.
The default settings are 95 and 135, which are the ACIn Lo Volt
and ACIn Hi Volt respectively. The ACIn Lo Volt setting has a
range of 78–115 volts and the ACIn Hi Volt setting has between
125–140 volts.
AC Frequency The charger can also be configured to accept and
operate from a wide AC source frequency of 40–68 Hz. Therefore,
the Freedom SW can charge your batteries even when incoming AC
voltage is less than ideal. The default settings are 45 and 55 Hz,
which are the ACIn Lo Freq and ACIn Hi Freq settings
respectively.
Power sharing The Freedom SW charger uses incoming AC or
shore power (see following note) to charge the batteries. The
charger shares incoming AC power with AC loads on Line 1 only.
The AC loads have priority, which means that the charger will
reduce its output with large AC loads and increase the output again
when the AC load decreases. The regulatory maximum for
continuous AC loads is 80% of the breaker rating (see “AC1
Breaker” on page 44) that the loads are connected to. The Freedom
SW senses pass-through current going to the AC load. The
difference between the pass-through (load) and 80% of the AC1
Breaker setting is the current that is available for charging the
batteries.
For example, if the AC input of the Freedom SW is from an AC
panel with a 30-amp breaker, the AC1 Breaker setting on the SCP
should be selected as 30 amps. Based on this, the charger will
control the charge current so that the total current draw is equal to or
less than 24 amps in this case. Should the load current be more than
24 amps, the charger output will reduce to 0 amp, but the Freedom
SW will continue to supply the loads. The Freedom SW will
continue to pass-through power to the loads, even if the load current
exceeds the AC1 Breaker setting. In this case, it will be up to the
user to remove/disconnect loads if tripping the AC input breaker
supplying the Freedom SW is to be avoided.
NOTE: The AC1 Breaker setting can also be changed using the
Shr soft key in the SCP (see “Soft Key Navigation” on page 25).
Shr stands for shore power which refers to incoming AC power in
the mobile industry.
Freedom SW 3K2K InvChg Owners Guide.book Page 18 Thursday, July 31, 2014 1:42 PM