Manson Engineering Industrial SDC-5330 User manual

SDC-5330/ 5340
Programmable DC-DC Converter with Battery Charger function
USER'S MANUAL
Keep this manual in a safe place for quick reference at all times.
This manual contains important safety and operation instructions for correct use of the battery charger.
Read through the manual and pay special attention to the markings and labels of the charger,
battery and equipment connected to the battery system.
Pay special attention to these two types of notices used in this manual.
Failure to heed this warning may cause injury to persons and damage to Equipment.
Failure to observe this warning may result in damage to equipment
and improper functioning of the Charger.
WARNING:
●The DC-DC converter is not designed for any life saving application.
●The DC-DC converter is designed for in-door use. Protect the charger from ingress of water.
●The charger function is made to charge only properly sized lead acid batteries and Lithium Fe PO4
(LFP).
●Don't recharging non-rechargeable batteries.
●Charging other types of battery or under-sized lead acid batteries may cause fire or explosion.
●Install the DC-DC converter in accordance with all local codes.
●Do not use the DC-DC converter if it has been dropped or damaged.
●Never attempt to charge a frozen LEAD BASED battery or Lithium FePo4 battery below 0°C.
●Never attempt to charge a damaged battery.
●Wear protective goggles and turn your face away when connecting or disconnecting the battery.
●Never place the DC-DC converter on top of a battery.
●Never smoke, use an open flame, or create sparks near battery or charger during normal charging
operation as batteries may give out explosive gas.
●Do not charge batteries in an enclosure (box- in) due to possible explosion of entrapped explosive gas.
●If the DC-DC converter does not work properly or if it has been damaged, unplug all DC connections.
Copy Right
All rights reserved.
No part of this publication may be reproduced, or transmitted in any form or by any means without the written
permission from Manson Engineering Industrial Ltd.
Changes in the manual.
Manson Engineering Industrial Ltd. has the right to update and change the content of this manual without
any prior notice and obligation.
P. 1

Disclaimer
Exclusions for documentation, Indemnity and Product application.
Manson Engineering Industrial Ltd. (Manson)
1) Assumes no warranty to the accuracy, suitability of technical information given in the user manuals or
other documentation.
2) Undertakes no responsibility or liability of losses, damages and related expenses whether specific,
direct, indirect consequential or accidental which might result from the use of information given in this
manual.
3) Shall not be liable to anyone for any special, collateral, incidental or consequential damages in
connection with or from the use of these Manson products. The sole and exclusive liability to Manson,
regardless of the form of action shall not exceed the purchase price of the Manson product.
P.2

1. INTRODUCTION
This series of MCU controlled wide input buck DC-DC converter/ charger can set as converter or charger.
The 3 digit LED display shows output voltage & current, battery type and fault codes.
One SET button for setting of voltage output in converter mode and selection of battery type in charger mode.
Charger mode: set charging profile for Lead, AGM 2 & Lithium Fe Po4 battery type.
Converter mode: The output can be set from 12.0V to 15.0V in 1V & 0.2V steps.
The output is by factory default as always on (the conventional type).
The output can be configured to remote control on-off mode synchronized with the ignition of the car or other
external switch such as float switch, temperature switch, relay, with any +8 V to 32V DC source.
(see FIG. C3 on page 7)
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. Converter mode: Digitally adjustable 1.0V & 0.2 V step of output voltage (12.0V-15.0V DC).
2. Battery charger mode: 3 Stage charging profiles for LEAD, AGM 2.
Selection of float or no float charging for LiFeO4.
3. 3 digit LED display for Voltage, Current, Operation Mode and Protection/ Fault diagnosis.
4. Remote voltage sensing for optimal and accurate powering of distant load or charging battery.
5. Remote alarm terminal (13.5V, 0.25A) for powering external warning device when input is under 21V.
6. A separate always-on auxiliary output (13.8V, 0.5A) to power critical electronic devices such as security
device or remote On Off manual switch.
7. fail-save protection, with 7 self-recoverable and all with fault code on LED display.
8. Thermostatic control cooling fan.
P. 3

3. INSTALLATION PROCEDURE
DO NOT install this unit in the vehicle engine bay.
This is a fan cooled electronic device not for use in high temperature, corrosive and dusty environment which
will drastically shortens the life and performance of the unit.
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 on page 6) to protect the converter from the high voltage
spike generated by the load when the supplied current is switched off.
2. For blown fuse find out and fix the problem before replace the fuse with the same type and rating.
3. Allow sufficient space surrounding the unit and install environment SEE Standard statement
4. This unit is designed only for internal mounting and away from direct sunlight, heat and rain. Allow at
least 80mm of space at both ends for ventilation.
5. To provide the best cooling effect, mount the unit in vertical position with the terminal end facing
downwards due to the top front exhaust design.
P. 4

4. PANEL VIEW
1. 3 digit LED displays voltage, current, operation mode, setting feed backs and fault codes.
2. LED indicates voltage (V) and current (A).
3. Battery Icon is on when converter is set at the charger mode.
4. Set button.
5. INPUT, OUTPUT, CONTROL & AUXILARY TERMINALS VIEW
Ignition Remote terminal for automatic/ manual control of output on-off.
13.8V Always ON 0.5A auxiliary output when input is connected to 24V.
Alarm When Input voltage <21V, A DC source (+13.5V & 0.25A) comes on to power external warning
device such as (LED) or buzzer.
Ground Ground terminal.
S+ S- Voltage remote sensing positive and negative terminals (see FIG. C3 on page 7).
P. 5

6. Wiring Diagram
6.1 Connection Diagram 1
Example 1
Example 2
P. 6
FIG. C1
FIG. C2

6.2 Connection Diagram 2 (Negative Ground)
7. INITIAL SET UP AND CONNECTION
1. Leave the output terminals disconnected.
2. Connect a 24V battery to input terminals.
DOUBLE CHECK FOR CORRECT POLARITY BEFORE CONNECTION.
3. Programming procedure using the SET button.
4. Press and hold the “SET” button until display flashes.
5. Flashing digits indicate unit is in programmable mode.
Otherwise repeat step 4 to get to programmable mode again.
6. Each short press will change the mode and battery type in cyclic order.
P. 7
FIG. C3

Setting of converter mode
1. Stop at [dCS] display.
2. Press and hold until the display shows a voltage value.
3. The first step is to set the unit digit of output voltage value.
While unit digit flashes press SET button to change by 1V Steps: 12.8→13.8→14.8→12.8
4. Press and hold to confirm the unit digit value and enter into decimal value setting of 0.1V steps.
5. Press SET button to change by 0.1V steps;
12.8→12.9→12.0→12.1→ 12.2 → 12.3 → 12.4 → 12.5 → 12.6 → 12.7 → 12.8
6. Press and hold to confirm and exit the setup menu.
Battery Charger Mode
1. Press and hold the “SET” button until display flashes
2. Flashing display indicates unit is in programmable mode & ready for setting.
Select battery type for charging mode
1. Select LEA/ AGM/ LFP/ dCS in the setup menu.
2. Press and hold to confirm your selection of battery type
3. If selection is LFP (Lithium Fe Po4), it will go to float on/ off setting.
The display shows FLT. Press SET button to switch between on/ off.
4. Press and hold to confirm your selection and exit
P. 8

8. REMOTE TERMINAL FOR AUTOMATIC/ MANUAL OUTPUT On-Off CONTROL
CAUTION
The Remote Control Mode will stay with the unit for good once activated, even if the unit is taken out from
the system and re-installed in another car.
The unit will only be turned on when there is a positive voltage (+8V to +32V) to the remote terminal,
otherwise the it stays in off mode.
8.1. The converter is set to output always on (like conventional converter) by default at the factory.
At factory default setting, the output will be on when the input voltage is higher than 25V.
8.2. The output of the converter can be configured to remote control on/ off either by manual on/ off toggle
switch or as automatic on/ off synchronized with ignition feed of car or other external on switches such
as float switch, temperature switch, various relay switches powered by any +8V to 32V DC source.
see following FIG. RC1, RC2 & RC3.
When remote control is using, the output will be on whenever input voltage higher than 19V.
8.3 Examples of remote control output on-off connections.
A. The converter can be set to manual control of output on-off via external toggle switch.
B. The converter can be set to automatic control of output on-off via the ignition switch DC source.
P. 9
FIG. RC1
FIG. RC2

C. The remote on off function can be controlled via many types of on-off switches with various DC
source of positive 8V-32V.
P. 1 0
FIG. RC3

9. 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.
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.
In the charger mode when the output float voltage is 13.6V and the current to the battery is less than 1 Amp,
can be interpreted that the battery is full. In the converter mode means that there is less than 1 Amp or no
load drawing from the output or that the output is open circuit.
Remote Voltage Sensing
Voltage converter it can be finely tuned to supply your device the required voltage even when your device is
at a distance, you can use the remote voltage sensing terminal (S-, S+) to ensure accurate point of load
voltage to further improves the stability of the load point voltage.
Alarm Terminal
Alarm terminal is for input low voltage alert (F05) which provides 13.5V, 0.25A to remote LED to give out alert
before the converter enters into low voltage protection mode and shuts down. The alarm signal will be on
once the input is below 21V and will be off when the input rises back above 25V.
P. 11
FIG. EA1

10. BATTERY CHARGER MODE - TWO STAGE CHARGER
When the unit is set at the charger mode, LED display LEA, AGM, L F P, the charger icon will be lit up
to confirm the Charger Mode in operation.
The bulk charge with constant current max set at 30A SDC-5330/ 40A SDC-5340 and max voltage.
The charger Icon flashes in bulk charge and becomes solid in float charge.
Quick press to Set Button will display charging voltage and current.
When battery is full and the float charge current is less than 1A, the current display shows
11. DISPLAY INDICATION
Low Current Display when the output current is less than 1 Amp
CHARGER Mode
Shows LEA, AGM and LFP
REMOTE CONTROL DISABLED, there is always output when input is powered up.
Charger stage indicator
Flashing = Bulk Charge, Solid = Float Charge, OFF = Float off
P. 1 2

12. TO ACTIVATE AND DEACTIVATE REMOTE CONTROL MODE
CAUTION
The Remote Control Mode will stay with the unit for good once activated, even if the unit is taken out from
the system and re-installed in another car.
The unit will only be turned on when there is a positive voltage (+8V to +32V) to the remote terminal,
otherwise the it stays in off 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 l 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 as following procedure.
To disable remote control mode
- Press and hold “SET” button until is shown.
- Release button then wait for few seconds. The remote control will be disabled & converter and output is
always on when input is over 21V.
13. DISPLAY ON/ OFF
The display will be switched off automatically after 5 minutes to save energy.
Press the SET button to restart the display for another 5 minutes.
14. ALWAYS ON AUXILIARY OUTPUT
The converter provides a constant 13.5V, 0.5A from the 24V input to power critical devices such as security,
alarm and also a positive voltage source for manual remote on/ off control or other sensory switches for auto
on/ off of the output. (see FIG. RC3 on page 10)
Upon connection of input to 24V battery supply, the 13.5V terminal will be powered.
15. REMOTE VOLTAGE SENSING PORTS
The remote voltage sensing works for both converter mode and charger mode. It compensates for voltage
drop at distant load or auxiliary battery.
It further enhances the accuracy of output voltage to the distant load or battery and provides more stability
with varying output current.
Just connect (AWG 22) twisted wires or shield wires (not supplied) between the positive S+ to positive of
load/ battery and negative S- to negative of load/ battery.
16. ALARM -- The low input voltage pre-warning
The alarm signal port provides a 13.5V 0.25A for external LED or other alarm device to give pre-warning
signal when input voltage drops below 21V before further dropping to 19V at which output shuts down.
17. LOW CURRENT DISPLAY
The display will show when the output current is less than 1Amp.
The converter can be in converter or charger mode or when the output is open circuit.
When in charger mode, it means the battery is full.
P. 1 3

18. 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.
If no output and no error code:
a. If remote control is using, check if there is DC voltage (+8-32V) to the ignition pin. FIG. RC3.
b. If remote control is not be used, see caution of 12, following steps to deactivate remote.
The LED will display error code when the converter is in any protection mode.
The following table denotes the 8 error codes.
Error Code
Description
F01
Over Temperature Protection (Self-restart)
When unit’s internal temperature becomes higher than the threshold value, unit shuts down
output. Unit will resume normal operation automatically once the temperature becomes normal.
F02
Output Over Voltage Protection (Self-restart)
In DC-DC converter mode, output shuts down when the output voltage is 15% higher than the
preset voltage level. Unit will self-restart when the output voltage falls 1V below the preset
level.
In the bulk charge stage of charger mode, the unit shuts down >16V and restarts when the
voltage <15.5V.
In float charge stage it shuts down when voltage >15.1V and restarts at < 14.6V.
F03
Over Load Protection (Self-restart)
When the output current is 3 Amp higher than 40A for model SDC-5340, 30A for model SDC-
5330, the unit will shut down the output. The unit will self-restart once the output current falls
back to unit’s rated value.
F04
Fan Fault (Self-restart)
When the fan does not operate normally, the unit will shut down the output. Unit will resume
normal operation once the fan fault condition has been removed.
F05
Input Low Voltage Protection (Self-restart)
Default Factory setting
Under remote control
Output & Alarm
Input V < 25V
Input V < 21V
Alarm signal on
Input V > 26V
Input V > 25V
Alarm signal off
20V< Input V < 24V for 3min.
15V < Input V < 19V for 3 min.
Output shut down
Input V < 20V
Input V < 15V
Output instant shut down
Input V > 26V
Input V > 25V
Output resume
F06
Output Short Circuit Protection (Self-restart)
Unit shuts down output when the output is short circuited.
It will self-restart when the fault condition is removed.
F07
Output battery terminal reverse polarity protection
Fuse will be blown when the output is reverse polarity connected to the battery.
Replace the fuse with correct type and rating.
F08
Input over voltage protection (Self-restart)
Output shuts down when the input voltage is higher than 33.5 V.
It will self-restart when the input drops below 32V.
P. 1 4

19. SPECIFICATIONS
Models
SDC-5330
SDC-5340
Type
Non-isolated step down
Input Voltage Range
19-33VDC
Output Voltage Range
12-15VDC (0.2V increments)
Continuous Output Current
30A
40A
No load current
<50mA
<50mA
Efficiency
≥90%
Protections
Self restart
Over voltage, Overload, Input reverse polarity, Over temperature,
Output short circuit, Input under voltage
Fuse blow
Output reverse polarity
Aux. Output (Always On)
13.8V/ 0.5A (when 24V input is connected)
Battery Charger Voltage
Battery Type
Absorption
Float
Lead
14.4V
13.3V
AGM 2
14.7V
13.6V
LiFePO4
14.4V
ON (13.2V)/ OFF
Remote Control of Output ON/ OFF
Yes, Automatic by sensory switches or Manual Control by toggle
switch
Default Factory setting
Under remote control
Output shut down
20V < Input V < 24V for 3min.
15V < Input V < 19V for 3min.
Output instant shut down
Input V < 20V
Input V < 15V
Output resume
Input V > 26V
Input V > 25V
Remote Voltage Sense
Yes
External Alarm Output
13.5V/ 0.25A becomes available when input is less than 21V
Indicators
3 digits LED display for V, A & battery type setting mode fault
Indication. See troubleshooting section.
Battery charger icon indicator.
Cooling System
Thermostatic control fan
Operating Temperature
-10°C to +50°C
Approvals
EN 55014, EN60335.2.29
Accessory
Supplied 4 cable lug connectors, One 400V 3A diode,
Optional Accessory
Battery temperature sensor
Dimensions (WxHxD)
130x55x160 mm
5.2x2.2x6.3 inch
130x55x190 mm
5.2x2.2x7.5 inch
Weight
1kg 2.2lbs
1.2kg 2.64lbs
Recommended Battery Capacity
Range (check with battery makers)
100AH to 300AH for lead & AGM2
30AH to 300AH for Lithium Fe PO4
130AH to 400AH
40AH to 400AH for Lithium Fe PO4
REV.1 20200827
7673-5340-0000
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