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9. 

GENERAL OPERATION 

 
LED Display 

During operation, the LED display will display sequentially Voltage and Amps. 
A quick press of the SET button will either hold the display (at desired V, A) or return to the default scrolling 
mode. 
The display will switch off after 5 minutes to conserve the energy. Display can be restarted by a quick press 
of the SET button. 
 

When  the  output  current  is  less  than  1  Amp  or  output  is  open  circuited  the  LED  display  will  show 

 

indicating Low Output Amp. This applies to both converter and charger mode. 
 
Battery is fully charged when the output float voltage is 13.6V and the current to the battery is less than 
1Amp.   
 

Remote Voltage Sensing

 

Voltage converter can be finely tuned to supply your device with the required voltage even when your device 
is  at  a  distance.  You  can  use  the  remote  voltage  sensing  terminals  (S-,  S+)  to  ensure  accurate  voltage  is 
supplied to the load. 
 
 

Alarm Terminal

 

The Alarm terminal is for input low voltage alert (F05). It provides 12V, 0.25A to power remote LED to give 
out alarm before the converter falls into low voltage protection mode and shuts down. The alarm signal will 
turn On when the input is below 42V and will turn Off when the input rises back above 50V. 
 

 
 
 
 

Summary of Contents for VC-4820

Page 1: ...4 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...

Page 2: ...rger mode 4 SET button 5 INPUT OUTPUT CONTROL AUXILARY TERMINALS VIEW Remote Remote Terminal for Automatic Manual control of Output On Off 12V 0 5A Always On Auxiliary Output GND Ground terminal NC No...

Page 3: ...6 Wiring Diagram 6 1 Connection Diagram 1 Example 1 Example 2 Example 3...

Page 4: ...epeat step 4 to get to programmable mode again 6 Each short press will increase the output voltage setting by 0 2V steps 15 0V CHA Charger Mode And then back to 12 0V as shown in the following cycle c...

Page 5: ...control of the output via external switch B The remote On Off function can be controlled via many types of On Off switches and with various DC sources between 8V 32V 3 Once the Remote Terminal has be...

Page 6: ...ter and charger mode Battery is fully charged when the output float voltage is 13 6V and the current to the battery is less than 1Amp Remote Voltage Sensing Voltage converter can be finely tuned to su...

Page 7: ...rge Quick press the SET button to display charging Voltage and Current Please note that when the battery is full and the float charge current is less than 1A the current display shows 11 DISPLAY INDIC...

Page 8: ...e display for another 5 minutes 15 ALWAYS ON AUXILIARY OUTPUT The DC DC Converter will provide constant 12V 0 5A to power critical devices such as security or alarm and will supply a positive voltage...

Page 9: ...and restarts at 14 6V F03 Over Load Protection Self restart When the Output current is 2 Amp higher than 20A the unit will shut down the output The unit will self restart once the output current fall...

Page 10: ...20A Float Charge 13 6V Remote Control of Output ON OFF Yes Automatic or Manual Control Remote Voltage Sense Yes External Alarm Output 13 5V 0 25A To power warning device when the input is under volta...

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