Instruction Manual

Operation
4–6 975-0400-01-01 Revision H
This manual is for use by qualified personnel only.
Charge Stages
The charge stages displayed on the LCD are described in Table 4-4.

User-defined custom screen text (configured on the
Display Menu). This screen only appears if it has been
configured.
Table 4 - 3 Other Operation Screens
Display Description
Table 4 - 4 Charge Stages
Text Description
Bulk Batteries are charging at the maximum current output of the DC
source.
If the solar charge controllerr shuts down because of low input
voltage, the unit restarts in bulk mode. This means the solar charge
controller starts in bulk at the beginning of every day, regardless of
the present battery voltage. If the batteries are charged already,
the bulk/absorption cycle finishes after a short period and the unit
transitions to float/no float (depending on Charge Cycle
configuration).
Absorb After transitioning from bulk mode, the solar charge controller
holds the battery voltage at the absorption voltage setting and the
current gradually declines as the battery capacity is reached. The
solar charge controller stops absorption charging when one of two
conditions are met, as described in “Absorption Stage” on page 1–
5.
Float Battery voltage is held at the float voltage setting. When the battery
voltage drops below the ReCharge Volts setting for a cumulative
period of 1 minute, a new bulk cycle will be triggered.
No Float The charger does not output any power during this stage. When
the battery voltage drops below the ReCharge Volts setting for a
cumulative period of 1 minute, a new bulk cycle is triggered.
Equalize A deliberate overcharge designed to return each battery cell to
optimum condition by reducing sulfation and stratification in the
battery. An equalization charge lasts one hour.
During the Equalize stage, this screen becomes the top-level
screen. The screen displays the equalization time remaining in
minutes and seconds.
ChgrOff No charging is occurring because the input power from the PV
array has fallen below the battery voltage.