72 | SAMLEX AMErICA INC.
SAMLEX AMErICA INC. | 73
5.6.2 Absorption Stage
During the Absorption Stage, the charging voltage is held constant near the Gassing /
Absorption Voltage to ensure that the battery is further charged to the full capacity without
overcharging. 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. As a part of the Adaptive Charging Algorithm,
the “T1 Timer” (explained above) computes the time the charging takes place in this stage.
Absorption Time 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 Timer” has minimum time of 1 hour and a maximum time of 12 hours.
When the T1 Timer runs out, the charger will enter the next float Stage.
Programmable range and Default values of Absorption Voltage are shown in Table 6.2.
this stage is displayed as "n-CV" in the Charging Mode screens in the remote Control
eVo-rC (Please see Section 3.6.1 of owner's Manual for eVo-rC at Appendix A).
5.6.3 Float Stage
float Stage is a maintenance stage in which the output voltage is reduced to a lower level, typically
about 13.5 volts, (27 volts for 24V models) to maintain the battery’s charge without losing electrolyte
through gassing and also prevent corrosion of Positive plate by maintaining proper Positive plate
Polarization Voltage. Programmable range value of "fLOATING VOLTAGE" are shown in Table 6.2.
this stage is displayed as "Float" in the Charging Mode screens in the remote Control
eVo-rC (Please see Section 3.6.1 of owner's Manual for eVo-rC at Appendix A).
5.6.4 Automatic resetting of Charging Cycle in 3 Stage Charging Profile
The charging cycle will be reset to the bulk Stage as follows:
- If the AC input from the Grid/Generator is disconnected and is reconnected or the battery
voltage drops below 12 VDC / 24 VDC (Default). Programmable range for this voltage is 10 to
13V for 12V battery and 20 to 26V for 24V battery (This parameter is called "fLOATING EXIT".
See Table 6.2 and Table 4.4 of Section 4.4 of Owner's Manual for EVO-rC at Appendix A).
- If the charger remains in the float Mode for 10 days.
5.7 4 StAge ChArging in eQuALiZAtion MoDe
!
CAution!
equalization Mode should be performed only on vented, flooded (non-sealed or
“wet”) batteries and not on the sealed AgM / gel Cell batteries and only as often as
recommended by the battery manufacturer.
!
Attention!
La mode d’égalisation devrait être faite sur des batteries ventillées, inondées (batteries non-scellées ou «mouillées»)
et pas sur des batteries scellées (AGM) ou cellulles gelées et, aussi souvent que les recommandations du fabricant.
4 Stage battery Charging Cycle is used in the Equalization Mode. Equalization Mode is selected
using optional remote Control EVO-rC [refer to parameter "CHArGE MODE" at Screen No.12
of Table 4.4 of Owner's Manual at Appendix A. The "CHArGE MODE" is required to be set at
SECTIOn 5 |
Battery Charging in Evolution
TM
Series