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1 PRODUCT FUNCTION
The BCDC1220(-IGN) is a multi stage, 12V, 20A, DC-DC battery charger that operates from
an input of either 12V or 24V nominal. The input voltage of the BCDC1220 can be above,
below or equal to the output voltage making it ideal for charging from a 24V vehicle or
charging an auxiliary 12V battery where the distance from the main battery may cause a
significant voltage drop. The BCDC1220(-IGN) is also designed to isolate the main battery
from the auxiliary battery, to avoid over-discharging the main battery.
The BCDC1220-IGN operates almost identically to the BCDC1220 but is designed to
operate from an ignition trigger to allow operation in vehicles with Variable Voltage or
Smart Alternators.
1.1 Display Panel
The front panel features 6 LEDs to display the charge profile and charge status.
LED State ‘Charge Profile’ LED ‘Charge Status’ LED
Off Unit has no Power Output is off
Blinking Unit is in Standby
Unit is supplying power
On Unit is on and can supply power
When blinking, the flash duty-cycle of the ‘Charge Status’ LED will increase to
reflect the amount of current being supplied - If the LED is ON solid, the unit is
supplying full power (e.g. 20A).
Figure 1.6.1 - The BCDC1220(-IGN) Front Panel
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