Samlexpower Evolution Series - Page 100

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This current is delivered to the batteries until the battery voltage approaches its Gassing Voltage i.e. Absorption Voltage
which is typically around 14.4 volts for 12 volt batteries and 28.8 volts for 24 volt batteries. The desired value can be
programmed using the optional Remote Control EVO-RC-PLUS [Refer to parameter "ABSORP VOLTAGE" in Table 6.2
and at Section 4.4.2.2 of EVO-RC-PLUS manual]. The Bulk Charge Stage restores about 75% of the battery’s charge. The
Gassing Voltage is the voltage at which the electrolyte in the battery begins to break down into Hydrogen and Oxygen
gases. Under normal circumstances, a battery should not be charged at a voltage above its Gassing Voltage since this will
cause the battery to lose electrolyte and dry out over time.
This stage is displayed as "X-Bulk Stage" in the 2
nd
line of the Charging Mode screens in the Remote Control EVO-RC-PLUS.
Refer to the display screens shown in Fig 3.3(a) under Section 3.6.4.1 of EVO-RC-PLUS Remote Control Manual. Character
"X" denotes code for the Charging Prole that is active. (For details of codes, please see Table 3.2 under Section 3.6.4.3
of EVO-RC-PLUS Remote Control Manual).
15
14
13
12
11
10
0
30
28
26
24
22
20
0
Charger Voltage, VDC
TIME
To T1
CURRENT (%) of set
BULK CURRENT “Io”
100%
60%
0%
BULK
STAGE
ABSORPTION
STAGE
FLOAT
STAGE
(V
Absorp
- 0.3V)
Io
Displayed as:
“X-Bulk Stage”
Displayed as:
“X-Absorption Stage”
Displayed as:
“X-Float Stage”
“RESET TO
BULK”
24V Battery 12V Battery
LEGEND for Fig 5.1
—————
Voltage (V) Curve
•••••
Current (I) Curve
Io
Bulk Stage Current. Please see Section 5.7.1.1
To
Bulk Stage Time. Please see Section 5.7.1.1
T1
Time in Absorption Stage. Please see Section 5.7.2
"X-BULK STAGE", "X-ABSORPTION
STAGE", "X-FLOAT STAGE"
This coded information relates to the active Charging Prole and Charging Stage and is displayed
in the 2
nd
line of the Charging Mode Display Screens of EVO-RC-PLUS Remote Control. Please see
Table 3.2 under Section 3.6.4.3 of EVO-RC-PLUS Remote Control Manual
RESET TO BULK
At this point, the charger is forced to reset automatically from the operating charging stage and
restart the selected CHARGING PROFILE from the 1st Stage i.e. from the Bulk Stage. Please see
Section 5.7.4
NOTES for Fig 5.1
1. Voltage (V) and Current (I) curves show the battery voltage and current.
2. The Voltage (V) and Current (I) curves shown are based on the following operating conditions:
a) The battery is being charged exclusively by the Battery charging Section of EVO and that there is NO external charging source that is
charging the battery / battery bank
b) There is no external DC load on the battery / battery bank (the entire current delivered by the Charging Section of EVO is being used
to charge the battery / battery bank)
Fig 5.1 Charging Curves for 3-Stage Charging Prole
SECTION 5 | Battery Charging in Evolution™ Series