Operation
900-0167-01-00 Rev A 37
Time limit:
Float Time
setting. The charger will go Silent once the timer has expired (if another stage
is not still in progress.) The Float timer is reset to its maximum amount whenever the batteries
decrease to the
Re-Float Voltage
setting.
NOTE
: The Float timer begins running any time the battery voltage exceeds the
Float Voltage
set
point. This usually means that it begins running during the Bulk stage, once the battery voltage rises
above that level. Often the timer will expire before the bulk and absorption stages are complete. (This
will occur if the
Float Time
setting is less than the total of the bulk and absorption stages.) The charger
will not enter Refloat or Float but will go directly to Silent. The charger only spends time in Float stage
if the timer is still running.
To skip this step:
Decreasing the
Float Time
setting to zero causes the inverter to enter Silent as
soon as the absorption stage is complete. The inverter will perform neither the constant-current
Refloat nor the constant-voltage Float.
Setting
Float Voltage
equal to the
Absorb Voltage
level causes the charger to proceed through the
normal three-stage cycle, but at a single voltage.
NOTE:
Setting
Float Time
to 24/7 causes the charger remain in Float continuously so that the Float
timer no longer applies. (The charger also skips Bulk, Absorption, and Silent.) However, the charger can
begin a single three-stage charge if the criteria are met, after which it will return to continuous Float.
Silent
Following the expiration of the Float timer, the unit enters (or re-enters) the Silent stage. The unit
remains connected to the AC source, but the charger is inactive. The unit will continue cycling
between Float and Silent until the AC source is lost or a new charge begins.
New Charging Cycle
If the AC source is lost or disconnected, the unit will return to inverting mode if enabled. The battery
voltage will begin to decrease due to loads or natural loss. When the AC source is restored, the
inverter will return to the charging cycle.
Re-Bulk
If the battery voltage decreases due to discharge, the inverter will restart the cycle as soon as the AC
source is available, beginning at Bulk stage.
Voltage Used:
Re-Bulk Voltage
setting. If the battery voltage does not decrease to the Re-Bulk
point, the charger will not enter the Bulk stage and will return to its previous stage.
Default Set Point
(nominal voltage): 12.0 Vdc (12-volt), 24.0 Vdc (24-volt), 48.0 Vdc (48-volt)
Absorption Timer
Time limit:
Absorb Time
setting. This is reset to its maximum amount whenever the battery voltage
decreases to the
Re-Bulk Voltage
setting. The reset occurs immediately, regardless of the duration
spent below this voltage.
If the battery voltage does not decrease to the Re-Bulk point, the
Absorb Time
setting will not reset. It
will retain any remaining time from the previous cycle. The Absorption stage will only last for the
duration of the remaining time.
The remaining charging steps proceed as described on the previous pages.
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