Xantrex Freedom SW 230V 815-3524-02, Руководство пользователя, Страница: 80 / 104

66 Freedom SW 230V Owner’s Guide
Battery Charging Reference
The Freedom SW 230V transitions to the float stage if either one of
the following two conditions are met:
1. The charge current allowed by the batteries falls below the exit
current threshold, which is equal to 2% of the programmed
battery capacity (for a 500 amp-hour battery bank, this would
be 10 amps), for three minutes.
2. The Freedom SW 230V has been in absorption for the
programmed maximum absorption time limit. The default is 3
hours, but the time limit is programmable from 1 minute to 8
hours.
Float Stage
Float charge maintains the batteries slightly above the self discharge
voltage of the batteries. The charge current in float is the current
necessary to maintain the batteries at the
Float Voltage
setting,
limited only by the inverter's capability or other settings that limit
the inverter's maximum charge rate. Float charging reduces battery
gassing, minimizes watering requirements (for flooded batteries),
and makes sure the batteries are in a constant state of readiness.
When three-stage charging is selected, the charger automatically
switches to the float stage after the batteries have received a bulk
and absorption charge (see Figure 35). The batteries are maintained
at the default float voltage level for the selected battery type or the
voltage selected under
Float Voltage
on the
Custom Battery
Settings
menu.
Table 19 Preset Absorption Voltage Settings
Battery Type Preset Absorption Voltage
Flooded 28.8
Gel 28.4
AGM 28.6
Custom 28.8 (changeable)
NOTE:
If there are DC loads on the batteries, the charger’s current may
never decrease to a level to initiate the next stage of charging. In this case,
the charger would stay in absorption until the
Absorb Time
setting is
reached.
NOTE:
To make sure the charger does not remain in absorption for too
long, adjust
Absorb Time
on the
Charger Settings
menu. The timer
begins at the start of the absorption stage and terminates absorption
charging if the charge current does not decrease to below 2 per cent of
the battery capacity before the
Absorb Time
setting expires. The
Absorb
Time
setting may be increased if the charge cycle continually runs the full
Absorb Time
in the absence of DC loads. This is an indication of too large
a battery bank for the selected
Absorb Time
setting.
FSW 230V Owners Guide.book Page 66 Tuesday, August 7, 2018 9:38 AM