Redarc BCDC Series, Manual

Page: 8 / 24

8 | Product Function
1.3 Charge Status LEDs
The Charge Status LEDs indicate to the user which inputs are available and what stage of the
charge process the unit is currently in.
1.3.1 SOLAR & VEHICLE LEDS
The Solar and Vehicle LEDs will be ON when the input is available and in use and OFF when the
input is not available or not in use.
If both LEDs are ON, both input sources are available and in use.
The Dual Input In-vehicle Battery Charger uses Green Power Priority technology. This means the
unit will always supply as much power as possible from the Solar input before supplementing this
with power from the Vehicle input, to the maximum output of the unit or required by the battery at
the time.
1.3.2 STAGE LED
The Stage LED indicates the charge profile stage. With any profile selected the BCDC1225D /
BCDC1240D charger will output a 3-Stage type charging profile with Boost, Absorption and Float
Stages. The BCDC1250D charger will output a 4-Stage type charging profile with Soft-Start, Boost,
Absorption and Float Stages.
"Table 1.3.2.1: Charge Stage LED Sequences" outlines the LED sequences which indicate these
stages, "Figure 1.4.3.1: Charging Process for BCDC1225D and BCDC1240D" on page 9
explains the Charging Process and "Figure 1.5.3.1: Soft Start Charging Process for BCDC1250D"
on page 10 explains the Soft Start Charging Process.
Table 1.3.2.1: Charge Stage LED Sequences
LED Flash Sequence Profile Stage
Continuous OFF / No Output
2 Seconds OFF / With Output
2 Seconds Soft-Start (BCDC1250D only)
Continuous Boost (Constant Current)
2 Seconds Absorption (Constant Voltage)
2 Seconds Float
1.3.3 OPTIONAL EXTERNAL LED
To provide charge status and error feedback away from the main unit, a basic 12 V LED (with
integrated resistor) can be wired as shown in
Figure 2.7.1.1 and Figure 2.7.2.1 on page 17 .
If used, this external LED is either OFF (BCDC not charging), ON (BCDC charging) or FLASHING
(see
"Error Codes" on page 11 ). A basic 3 V LED (no integrated resistor) will not operate correctly
if installed.