Samlex Power SCC-30AB Manuel Du Propriétaire page 31

SECTION 5 | Construction, Layout & Controls
LCD Display – Operational Information
The LCD Display (1, Fig. 5.1) is a 2 Line, 16 character display with backlighting. The
backlighting switches OFF after 30 seconds and switches ON again when any button
is pressed. The Push Switch marked "PUSH: Select Display" (3, Fig. 5.1) and "HOLD:
Reset Amp Hours" (3, Fig 5.1) is used to manipulate the LCD functions. Every time the
Push Switch is pressed momentarily, the screen display scrolls. The scrolling sequence
is shown in Fig. 5.3. Please note that the 7 screens are sequential & are displayed in a
continuous loop: 1 - 2 - 3 - 4 - 5 - 6 - 7 - 1 - 2 - 3 and so on (See Fig. 5.3). When selected, Screens
2 to 7 will be displayed for 15 minutes and thereafter, will revert to Screen 1 (Default Screen).
Details of information provided in the LCD screens (Fig 5.3) are given below:
SCREEN 1: Shows the solar array current / charging current in Amperes (Amp), Battery
Voltage in V (BatV) and the power delivered by the solar array / fed to the batteries in
Watts (Watts). The value of Watts = the charging current in Amperes (Amp) x Battery
Voltage in V (BatV).
SCREEN 2: It is a resettable counter that displays the Ampere Hours (Amp-Hours) of
energy (in Ah) delivered by the solar panel into the batteries with effect from the time
the solar panel has been connected or with effect from a desired starting / reference
point after the counter is set to 0. The counter can be set to zero with the help of
the Push Button marked "Reset Amp-Hours" (Push and hold the Push Button till the
counter resets to 0). For example, due to its 75% to 85% efficiency, a lead acid battery
requires up to around 130% of Amp-Hour energy as compared to its rated Amp-Hour
capacity to recharge fully. Hence, during start of recharging of say a fully discharged
100 Ah battery, the Amp-Hours counter can be set to 0. As 130 Amp-Hour of energy
will be required to re-charge a fully discharged 100 Ah battery, a healthy battery is
likely to be fully recharged when the Amp-Hour counter approaches 130 Amp-Hours.
SCREEN 3: Counts the total running Ampere Hours (Amp-Hours) of energy (in Ah)
delivered by the solar panel into the batteries. This will only reset if the battery
connection is removed.
SCREEN 4: Displays the charging Mode in progress: Bulk or Absorption or Equalization or
Float.
SCREEN 5: Displays the Bulk (same as Absorption) and Float Voltages that have been
programmed for the desired battery type corresponding to one of the 8 options that
can be selected with the help of DIP Switches 2, 3, 4 (Table 6.3).
SCREEN 6: Displays the programmed Equalization Voltage (EQU, inV), Equalization
Time (EQU-T, in Hours) and Equalization Cycle (CYCLE, in days). These parameters are
automatically set once a particular battery type corresponding to one of the 8 options
has been programmed using DIP Switches 2,3,4 (Table 6.3).
SCREEN 7: Displays the heat sink temperature (Heatsink) in °C (the metal plate of the
front panel acts as the heat sink). It also displays the temperature of the battery in °C
when the Battery Temperature Sensor (BTS) is used.
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