VC-4820
Programmable DC-DC Converter with Battery Charger function
USER'S MANUAL
1.
INTRODUCTION
This MCU controlled Step Down DC-DC Converter has a digitally adjustable output in 0.2V increments.
This unit can also be set up and used as a Two Stage Battery Charger.
Output voltage and current are displayed in turn or selectively by the LED display.
8 fault codes can be displayed for different fault diagnosis by the LED display.
Intended Applications
*
Ideal for voltage sensitive loads, devices and equipment that are distant from the DC source.
*
Remote Automatic or Manual On/ Off Control of the output makes it ideal for various DC power and DC
management applications.
*
Suitable for on-board charging of stand-alone 12V Battery Bank or a Battery with load.
2.
FEATURES
1.
Digitally adjustable output voltage in 0.2 V increments (12V-15V DC) makes this unit ideal
to operate voltage sensitive devices.
2.
2 stage Battery Charger mode with 14.3V Bulk and 13.6V Float charge.
3.
3 digit LED display for displaying Voltage, Current, Operation Mode and Protection/ Fault Diagnosis.
4.
Remote Control Terminal for Manual or Automatic On/Off control of the output power.
5.
Remote Voltage Sensing for optimal and accurate powering of distant load or charging of a battery.
6.
Remote alarm terminal (12V, 0.25A) for powering external warning device when input is under 42V.
7.
A separate always-on auxiliary output (12V, 0.5A) to power critical electronic devices such as security
device or remote On/Off manual switch.
8.
Fail-save protection, with 7 self-recoverable and all with fault code on LED display.
9.
Thermostatic control cooling fan.
3.
CAUTION
1.
When an inductive load such as motor or a solenoid is used, a diode (400V, 3Amp) must be installed
across the load as shown in (Connection Diagram 1). This will protect the converter from the high
voltage spike generated by the load when the supplied current is being switched OFF.
2.
When the fuse is blown, repair the problem and then replace the fuse with the same type and rating.
3.
Avoid touching the heat sink during operation as it may burn you.
