4
1 PRODUCT
FUNCTION
1.2 Charging
Algorithm
When the BCDC2420(-LV) is turned on, it will move into the
Boost
stage. The Boost
stage maintains a constant current until the battery voltage reaches the Absorption
Voltage. The current during Boost stage may vary throughout operation in order
to maintain a safe operating temperature, or to limit the difference between input
and output voltages.
The charger will then move to
Absorption
stage which maintains a constant
voltage level for a predetermined period of time or until the current being drawn
by the output battery drops to less than 4A for 30 seconds; after which the charger
will enter
Float
stage.
Float
stage maintains 13.3V on the output battery, keeping the battery topped
up. This counteracts the battery’s self discharging or loads applied to the battery.
When the battery loses charge, the charger will move back into the
Boost
stage.
1.3 Turn
On/Off
Thresholds
12V
BCDC2420
12V
BCDC2420-LV
Solar
All Models
24V
(standard)*
3
BCDC2420
Input
Open Circuit
Low voltage
conditions *
1
Turn ON above
13.2V
12.0V
17.5V
26.4V
Turn OFF below
12.7V
11.9V
17.2V
25.4V
Input
Loaded Low
voltage
conditions*
2
Turn OFF
instantly below
8V
17V
Turn OFF after
20 secs below
9V
N/A
18V
Input
Over voltage
shutdown
Turn ON below
15.5V
28V
32V
Turn OFF
instantly above
16V
29V
32.5V
Turn OFF after
20 secs above
15.6V
28.2V
32.1V
Output
Under voltage
shutdown
Shutdown if Output Battery < 4V
*
1
Tested every 100 Seconds.
*
2
Constantly tested.
*
3
LV Versions not suitable for use in 24V vehicles
