Voltech BBC-3140 User manual

BBC-3140
USER MANUAL
DC-DC CHARGER / BATTERY EQUALIZER / VOLTAGE REDUCER
Important
The BBC -3140 must be used according to the local safety standards with the
particular application. All wiring and connections to the units should be done by a
qualified person. No modification or adjustment is allowed on the unit.
Safety Precautions and Installation Procedure
1. Always disconnect the 24VDC supply at the source before any connection
made on the output.
2. Always double check on the correct polarity on both the input and the
output before the last wire connection is made on the output and input
terminals.
3. Use appropriate gauge of wires and fuse /circuit breaker.
4. Mount the unit as close as possible to the battery banks and at a well
ventilated spot.
The cables must have proper sized lugs with heat-shrunk insulation.
5. Double check tightness of terminal nuts by wriggling joining cable a few times.
It pays to double check on the tightness of the nuts which may become loosen
due to vibration and shocks from the vehicle on the road.

Introduction
This micro-processor controlled 3 stage DC-DC charger can be installed as:
battery charger or battery equalizer or regulated dc-dc step-down converter. It
operates with any DC input source of 24- 30 V with various output voltage
according to selected installation.
Applications & Features
1. As a 3 stage charger for 12V battery bank from a 24V source, it has selection
for Wet, AGM and Calcium-Calcium battery types.
With the optional Remote Display Module, user can set the absorption voltage
level & time and the float voltage.
2. As a Battery Equalizer which balances both 12V series connected batteries in
a 24V battery system during charging and even under highly unbalanced load
from center tap.
3. As a DC-DC Step Down Converter (Voltage Reducer) with regulated 40A,
13.8 VDC output for voltage sensitive load.
4. Automatic car ignition connection to enable operation only when car is
switched on or by manual remote simple on-off contact control.
5. Optional remote control display module (BBR-3100) for charger application.
6. Optional temperature sensor (ATS-5120) for battery.
Protection
Low Input Voltage
Unit output will be off when input voltage is less than 22V +/- 1V. The output
will shut down immediately and LED A turns red. When input voltage rises
higher than 24V for 2 minutes continuously, the unit will return to normal
operation again, LED A turns green again.
High Input Voltage
Unit output will be off when input voltage is above factory preset level LED A
turns red.
When input voltage drops below the preset level unit operates again, LED A
turns green again.
Output Short Circuit
When output is short circuited, unit will be disabled and LED A turns red.
After short circuit is removed, unit has to be manually switched off then on
again to restore normal operation
Output Overloaded
If unit is continuously overloaded, unit will be disabled and LED A turns red.
After overload is fixed, unit has to be manually switched off then on again to
restore normal operation

High Output Voltage
When output voltage is higher than factory preset, unit will be disabled and
LED A turns red. Unit has to be manually switch off then on again to restore
normal operation
Thermal Overload
When unit’s internal temperature exceeds factory preset limit, unit shuts down
and LED A turns red. Unit has to be manually switch off then on again to
restore normal operation when unit cools down to room temperature.
Battery Over temperature
When battery is detected by the remote sensor to be over 60°C, the output will
shut down and LED A will turn red.
When battery temperature decreases to appropriate level, output will be
restored automatically
Output Reverse Polarity Connection
By internal thermal fuse.

Front Panel Operation
SWITCH
SWITCH TO ↑ON
LED B
1
AGM / GEL
OFF
2
WET
OFF
3
CALCIUM-CALCIUM
OFF
4
User Defined Charge A
ON
5
User Defined Charge B
ON
6
Battery Equalizer: Output V = ½ Input V
LED B OFF , LED C OFF
All switches to OFF : Output = 13.8VDC
LED B OFF , LED C OFF
2 or more switches to ↑ON : NO OUTPUT
LED B BLINKS , LED C OFF
LED A. LED operation status:
Green: Unit in normal operation and power on.
Red: Unit is not operating and is in protection mode or wrong dip switch
selection.
LED B. Battery type/ DIP Switches status.
OFF: Indicates one of the three standard battery type is selected.
Orange blinking: Error in setting of DIP switches.
More than one switch set to “ON”.
Orange solid: User defined charge profile selected.
Must be used with the optional Remote Panel

LED C. Charging status:
Green blinking: Bulk/ Absorption Charge
Green solid: Float Charge
A. Remote Temperature sensor socket for battery
B. Output to battery or load.
C. Power ON / OFF switch.
D. Explanation of the DIP switches settings for Battery Type or charge
profile selection.
There are 6 DIP switches Up position is the On or Selected position.
Caution
Only one switch is allowed to be set to ON (up position) at any one time.
If more than one switch set to ON, output will shut down and the orange B LED
will blink until selection has been corrected.
BATTERY CHARGER MODE
DIP 1 UP: AGM/GEL battery type. Absorption 14.1V, Float 13.2V.
DIP 2 UP: Wet battery type. Absorption 14.4V, Float 13.5V.
DIP 3 UP: Calcium-Calcium type. Absorption 15.5V, Float 13.8V.
DIP 4 UP: User defined 1 in which Absorption, Float Voltages and
Absorption time are set via Remote Display Module.
DIP 5 UP: User defined 2 in which Absorption, Float Voltages and
Absorption time are set via Remote Display Module.
BATTERY EQUALIZER MODE
DIP 6 UP: Battery Equalizer: Output V = ½ Input V.
VOLTAGE REDUCER MODE
All 6 DIP switches DOWN: Unit becomes a DC Voltage Reducer with
regulated 13.8V output.
E. Remote Display connecting / connector is RJ12.

Installation and operation
The remote on-off/ ignition control terminal at the back of the unit are shorted as
default setting for continuous operation.
See section of instruction for remote on-off and ignition control application in the
appendix A.
DC-DC CHARGER INSTALLATION:
1. Check all the DIP SWITCHES are at down position
2. Push up the single DIP SWITCH that matches your battery type
3. DIP 1 = AGM/ GEL; DIP 2 = WET; DIP 3 = CALCIUM-CALCIUM
4. Only one DIP switch is allowed to be in up position
5. Double check for correct polarity on the input and output before
connections are made.
Any wrong polarity on the input or output connection will damage unit.
6. LED A in green color when unit is working normally.
7. LED C shows the charging status:
Flashing Green = Boost Charging (Bulk/ Absorption)
Solid Green = Float Charging with less than 10A & less than 13.8V

Charging Profiles
This special 3 Stage charging profile is designed to give quick and complete
charge to the auxiliary battery bank and at the same time provides sufficient
power to the loads that connected to the auxiliary battery while keeping the
battery fully charged.
Float (LED C solid green):
Charger will start with 13.2 to 13.8 charging voltage and keeps at this voltage until
current drawn by battery is more than 10 Amp for 5 minutes or battery voltage is
less than 12.5V for 5 minutes then charger goes into Bulk Charge Mode.
Bulk (LED C flashing green):
At Bulk charge mode , charger puts about 40 Amp of constant charging current to
the battery until the battery voltage rises to the Absorption Voltage level
(according to the selected battery type) then charger goes into Absorption Charge
Mode.
Absorption (LED C flashing green):
In Absorption charge mode, the charging voltage is kept constant (according to
the selected battery type). The charging current decreases as the battery is
charged up. When the charging current drops to about 4 Amps or after 3 hours in
absorption mode, the charger will go to Float charge mode. Whilst in float mode, if
the battery draws a current as large as 10Amp continuously for about 5 minutes,
the unit will recycle charge to Bulk charge mode.

Voltage Reducer Mode (Step Down Converter):
1. Set all the DIP switches to down position , check LED B and LED C are both
off to confirm unit becomes a Voltage Reducer with 13.8V & 40A output.
2. Double check for correct polarity on the input and output before
connections are made.
Any wrong polarity on the input or output connection will damage unit.
3. Unit can be set to Automatic car ignition control or manual remote on-off via
the Ignition terminal as the back of the unit.
For continuous operation short circuit the Ignition terminal.
4. All the protections of the unit are applicable in this mode as in charger mode.

Battery Equalizer Mode
As a Battery Equalizer, it can be installed in any 24VDC (two 12V battery in series)
system where the center tap is used to power heavy 12V loads. It keeps both
batteries balanced during charging of 24V battery and balanced the second
battery when used as a 12VDC source.
Short circuit the remote control ignition terminal for continuous operation
Double check for correct polarity on the input and output before
connections are made.
Any wrong polarity on the input or output connection will damage unit.
Connect the unit, battery and center tap load as shown in the following diagram.
Specifications
Rated Output Power
40A at 13.8V
Efficiency
86%
Input Voltage Range
24 –30VDC
Output Voltage Rage
according to operation
mode

DC-DC Battery Charger Mode
Float (GEL/ AGM)
13.2V
Float (WET)
13.5V
Float (Calcium-Calcium)
13.8V
Absorption (GEL/ AGM)
14.1V
Absorption (WET)
14.4V
Absorption (Calcium-Calcium)
15.5V
With Optional Remote Control Module BBR-3100
User Defined Float Voltage Range
12.6V ~ 14.0V
User Defined Absorption Voltage Range
13.0V ~ 15.5V
User Defined Absorption Time Range
1 ~ 6hours
DC Voltage Reducer Mode
Regulated Output Voltage
13.8V
Battery Equalizer Mode: Output V = ½Input V (11-15V)
Output Voltage
½Input Voltage ±3%
Voltage Regulation:
Load
200mV
Line
80mV
Ripple & Noise
35mVrms
DC Input Current
No Load Input Current (Standby)
170mA
Full Load Input Current (at output 13.8V / 40A)
26.5A
Input Current Level when Output Short Circuit
2.5A
Protections
Input Under Voltage (LVD Low Voltage Disconnect), (Auto reset)
(22V) (24V)
Input Over Voltage (Auto Reset)
32V
Output Over Voltage (Manual Reset)
17.5V
Output Over Current / Short Circuit (Manual reset)
41A
Battery Over Temp. with remote temp. sensor (Auto Reset)
60°C
Unit Over Temperature Protection
Yes
Reverse Polarity (Output)
30A x 2 Fuses
Other
Approval
CE EMC EN55014
Dimensions (L x W x H) mm
243 x 156 x 61
Weight
Approx. 2.4kg
Supplied Accessories:
A. one set of mounting bracket & taper screws
B. hardwire input cable 1600mm AWG#22
C. one single red wire (for ignition control) 1500mm AWG#22
Optional Accessories:
A. Remote Display Module BBR-3100
B. Remote Temperature Sensor for battery model ATS-5120

Appendix A
Remote on/off ignition control
A. Ignition Terminals
The ignition terminals are short circuit by factory setting as shown for
continuous operation of the unit.
B. When these two terminals are open circuit there will be no output.
C. Remote On-Off function by connecting the two wires to the ignition terminal as
shown Short=On, Open=Off. This function is applicable for the Charger Mode
and Voltage Reducer Mode installation.
The master power on-off switch F must be on all the time in order to use this
remote on-off function.

To Ignition Switch
D. Ignition Control
Connect the supplied red wire to the + ignition terminal at back of unit.
Make connection of the red wire to the ignition switch of the car.
The unit will operate when the ignition is switched on.
The power on-off switch F of the unit must be on all the time in order to use
this function.

Appendix B
Remote Display Module BBR-3100 (optional)
I. Introduction
The Remote Display Module is an optional module which has two functions:
1. Displays real time key information of the BBC-3140.
2. Sets charging parameters of the two user defined charging profiles.
Absorption Voltage Range: 13V to 15.5V
Absorption Time: 1 hour to 6 hours
Float Voltage: 12.6V to 14V
PREPARATION FOR USE WITH REMOTE DISPLAY PANEL
CORRECT SETTING OF DIP SWITCH 4 OR 5
Push either DIP 4 or DIP 5 to On (up position).
Only one DIP switch is allowed to set to On (up position)
DIP 4 UP: User defined 1
DIP 5 UP: User defined 2
Check LED B is in orange solid to confirm correct setting of DIP switch.
If LED B is in blinking orange then more than one DIP switch, unit is not set for
this mode.

II. Connection
1. 10 Meters Phone Cable
2. In Line Coupler 6P6C
3. BBR-3100 Remote Display Module
III. Panel Buttons Operation
1. To switch ON LED backlight.
2. Scroll up display of the real time information of main unit BBC-3140.
3. Scroll down display of the real time information of main unit BBC-3140.
4. Enter input of charging parameters for the User Defined Charge Profiles.

IV. Indications
When Remote Display Module is connected to BBC-3140, it displays the
“Initialization”, “Version of software”, “Brand or Make” and then scrolls cyclically to
show all the real time information according to the mode selected in the main unit.
Following is displayed when in charger mode:
Battery type selected.
Charging voltage.
Charging current.
Temperature of the battery.
State of charging (bulk, absorption, float).
Type of fault if unit is in fault mode.
Following is displayed when in user defined charging mode:
Batt type shows: “U def” and so on.
When in Voltage Reducer Mode, no battery type is shown, and the “State”
displays “Power” or “Half” depending on the selection.

Decoding the indications of the display.
1. IUVP: Input Under Voltage Protection
2. IOVP: Input Over Voltage Protection
3. Over-temp: Battery Over Temperature protection
4. Power: unit is set at 13.8V Voltage Reducer Mode
5. Half: Output = Half the Input voltage
V. Setting the User Defined Charging Parameters
The Absorption voltage (13.0V to 15.5V), float voltage (12.6 to 14.0V) and the
maximum absorption time (1 to 6 hour) can be set in the User Defined Charging
Modes.

VI. Flow Chart of Value Setting Instruction

An example of setting the values in user defined charging profile.
REV3 201404
7673-3140-3522