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Manson Engineering Industrial SDC-5420 User Manual

Programmable dc-dc converter with battery charger function
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Programmable DC-DC Converter with Battery Charger function
1.
INTRODUCTION
This MCU controlled Step Down DC-DC Converter has a digitally adjustable output in 0.2V increments.
It can also be set up as a Two Stage Battery Charger.
Output voltage and current is displayed in the LED in turn or selectively as desired.
8 fault codes can be shown in LED for different fault diagnosis.
Intended Applications
*
Ideal for voltage sensitive loads, devices and equipment near or far from DC source.
*
Remote Automatic or Manual On/ Off Control of output makes it ideal for various DC power and DC
management applications.
*
Suitable for on-board charging of stand alone 12V Battery Bank or Battery with load.
2.
FEATURES
1.
Digitally adjustable 0.2 V step of output voltage (12V-15V DC) makes it ideal
for voltage sensitive devices.
2.
2 stage Battery Charger mode with 14.3V Bulk and 13.6V Float charge.
3.
3 digit LED display for Voltage, Current, Operation Mode and Protection/ Fault Diagnosis.
4.
Remote Control Terminal for Manual or Automatic on/ off of output voltage.
5.
Remote Voltage Sensing for optimal and accurate powering of distant load or charging 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, solenoid is used, a diode (400V, 3Amp) must be installed across
the load as shown in (Connection Diagram 1) to protect the converter from the high voltage spike
generated by the load when the supplied current is switched OFF.
2.
When the fuse is blown, find out and fix the problem and replace the fuse with the same type and rating.
3.
Avoid touching the heat sink during operation as it may burn your hand.
SDC-5420
USER'S MANUAL

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Summary of Contents for Manson Engineering Industrial SDC-5420

  • Page 1 SDC-5420 Programmable DC-DC Converter with Battery Charger function USER'S MANUAL INTRODUCTION This MCU controlled Step Down DC-DC Converter has a digitally adjustable output in 0.2V increments. It can also be set up as a Two Stage Battery Charger. Output voltage and current is displayed in the LED in turn or selectively as desired.

  • Page 2: Panel View

    PANEL VIEW 3 digit LED. Displays voltage, current, operation and fault code. LED indicates Voltage (V) and Current (A). Battery Icon is on when converter is set at the charger mode. Set button. INPUT, OUTPUT, CONTROL & AUXILARY TERMINALS VIEW Remote Remote Terminal for Automatic / Manual control of Output On-Off 12V 0.5A...
  • Page 3 Wiring Diagram 6.1 Connection Diagram 1 Example 1 Example 2 Example 3...
  • Page 4 6.2 Connection Diagram 2 INITIAL SET UP AND CONNECTION Leave the output terminals disconnected. Connect a 48V battery to input terminals. DOUBLE CHECK FOR CORRECT POLARITY BEFORE CONNECTION. Programming Procedure using the SET button Press and hold the “SET” button until shows up and display flashes. Flashing digits indicate unit is in programmable mode.
  • Page 5 REMOTE TERMINAL FOR AUTOMATIC / MANUAL OUTPUT On-Off CONTROL The converter is set to Output always on by default at the factory. Application of the Remote Control Terminal: The remote on off function can be controlled via many types of on-off switches with various DC source of positive 32-62V.

  • Page 6: General Operation

    GENERAL OPERATION LED Display During operation, the LED display shows voltage and amps in turn. Quick press of the button will either freeze the display (at desired V, A) or return to the default scrolling mode. The display will switch off after 5 minutes to conserve energy. It can be restarted again by a quick press of the button.

  • Page 7: Display Indication

    10. BATTERY CHARGER MODE - TWO STAGE CHARGER When the unit is set at the Charger Mode, LED Display , the charger icon will be lit up to confirm the Charger Mode in operation. The Bulk Charge with constant current max set at 20A and max voltage to 14.3V and the Float Charge voltage is at 13.6V.
  • Page 8 12. TO ACTIVATE AND DEACTIVATE REMOTE CONTROL MODE The Remote control terminal is disabled by default at the factory and output is always on. To enable Remote control mode, just apply a positive 8 to 32Vdc to Remote terminal. After remote control mode has been enabled once, it will stay enabled until it is disabled or reset to factory default setting in 12.
  • Page 9 19. Troubleshooting If no display comes up after connection to the input, check for correct input polarity. Disconnect all cables to the unit and check the input fuse. The LED will display error code when the converter is in any protection mode. The following table denotes the 8 Error Codes.

  • Page 10: Specifications

    20. SPECIFICATIONS Models SDC-5420 Input Voltage Range 38 - 60VDC Output Voltage Range 12 – 15VDC (0.2V increments) Continuous Output Current No load current < 60mA ≥ 90% Efficiency Protections Over Voltage, Overload, Input Reverse Polarity, Over Temperature, Output Reverse Polarity, Output Short Circuit, Input Under Voltage Aux.

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