Product Manual
88 | SAMLEX AMERICA INC. SAMLEX AMERICA INC. | 89
When the unit enters Charging Mode, it starts working as a battery charger and the charger
will run at full programmed "BULK CURRENT" until the charger reaches the programmed
threshold of "ABSORP VOLTAGE".
For Adaptive Charging Prole Options (i) 0=3 Stage Adaptive and (ii) Equalize - 4 Stages
(1=Yes) [See Table 5.2], a software timer will measure the time taken from the instant the unit
enters the Bulk Charging Stage until the instant the battery voltage reaches 0.3V below the
programmed "ABSORP VOLTAGE", then registers this time as Bulk Charge Time "To" and
computes the Absorption Time "T1" as 10 times the Bulk Charge Time "To" in the internal “T1
Timer” i.e. T1 = To x 10. The “T1 Timer” is used to determine the time the charging will take
place in the next Absorption Stage in these 2 charging proles.
5.7.1.2 Automatic Adjustments of Internal AC Charger Current When External
Solar Charge Controller is Also Charging in Parallel
Please note that if an external solar charge controller is also used to charge the batteries at
the same time in parallel with the internal AC charger of the unit, the charging current of the
internal AC charger will be controlled so that the total charging current of the external charger
and the internal charger is = the programmed "BULK CURRENT (“Io”).
For example, if the programmed "BULK CURRENT (“Io”) is say 40A and the charging current of
the external charger is 30A, the internal AC charger will output only 10A (Programmed setting
of 40A – external charging current of 30A = 10A). Similarly, if the programmed setting is say
30A and the external charger is 50A, the internal AC charger will NOT provide any charging.
Please refer to Section 5.4 for more details.
5.7.2 Absorption Stage
During the Absorption Stage, the "ABSORP VOLTAGE" is held constant near the Gassing /
Absorption Voltage to ensure that the battery is further charged to the full capacity without
overcharging. Programmable range and Default values of "ABSORP VOLTAGE" are shown in
Table 6.2. Default value is 14.4V for EVO-1212F / EVO-1212F-HW and 28.8V for EVO-1224F /
EVO-1224F-HW. For programming details, refer to Section 4.2.2.2 of the EVO-RC-PLUS manual.
The Absorption Stage restores the remaining 25% of the battery’s charge. The time the charger
remains in the Absorption Stage is proportional to the depth of discharge of the battery. When
the battery is more discharged, it will take longer time in the Bulk Charge Stage to reach the
Gassing / Absorption Voltage.
For Adaptive Prole Options (i) 0=3 Stage Adaptive and (ii) Equalize-4 Stages (1=Yes) [See Table
5.2], the T1 Timer (explained above under Bulk Stage) computes the time of charging in this
stage as follows:
Absorption T
ime "T1" = Bulk Charge Time "To" x 10 ("To" = Time from entering Bulk
Charge Stage till battery voltage rises to 0.3V below Absorption Voltage).
The “T1 T
imer” has minimum time of 1 hour and a maximum time of 12 hours.
When the "T1 T
imer" runs out, the charger will enter the next Float Stage.
Pr
ogrammable range and Default values of Absorption Voltage are shown in Table 6.2.
This stage is displayed as "X-Absorption Stage" in the 2
nd
line of the Charging Mode
screens in the Remote Control EVO-RC-PLUS. Character "x" denotes code for one of 6
Charging Proles that is active. (For details, please see Table 3.2 at Section 3.6.4.2 of
Owner's Manual for EVO-RC-PLUS).
SECTION 5 | Battery Charging in Evolution
TM
Series