La Marche Manufacturing Company | www.lamarchemfg.com
SC3
1-2-3 Cell Battery Charger
Installation and Operation Manual
This manual is subject to change without notice. You may obtain the newest version of the manual at www.lamarchemfg.com
106 Bradrock Dr. Des Plaines, IL 60018-1967
Tel: 847-299-1188
Fax: 847-299-3061
CPN 136504
Instruction Drawing Number: P25-LSC3-1
Revision A01
Rev. Date: 07/17
ECN: 21515
Important Safety Instructions
Before using this equipment read all manuals and other documents related to this unit and other equipment
connected to this unit. Always have a copy of a units manual on file nearby, in a safe place; if a replacement
copy of a manual is needed it can be found at the www.lamarchemfg.com.
Electrical Safety
WARNING: Hazardous Voltages are present at the input of power systems. The output from rectifiers
and from batteries may be low in voltage, but can have a very high current capacity that may cause
severe or even fatal injury.
When working with any live battery or power system, follow these precautions:
● Never work alone on any live power system, someone should always be close enough to come to your aid
● Remove personal metal items such as rings, bracelets, necklaces, and watches.
● Wear complete eye protection (with side shields) and clothing protection.
● Always wear gloves and use insulated hand tools.
WARNING: Lethal Voltages are present within the power system. Parts inside the unit may still be
energized even when the unit has been disconnected from the AC input power. Check with a meter
before proceeding. Do not touch any uninsulated parts.
●
●
●
●
●
●
A licensed electrician should be used in the installation of any unit.
Always disconnect the unit from the supply, batteries and loads before performing maintenance or cleaning.
Always assume that an electrical connection is live and check the connection relative to ground.
Be sure that neither liquids nor any wet material come in contact with any internal components.
Do not operate this unit outside the input and output ratings listed on the unit nameplate.
Do not use this unit for any purpose not described in the operation manual.
Mechanical Safety
●
●
●
●
This unit or parts of the unit may get very hot during normal operation, use care when working nearby.
Do not expose equipment to rain or snow. Always install in a clean, dry location.
Do not operate equipment if it has received a sharp blow, been dropped, or otherwise damaged in any way.
Do not disassemble this unit. Incorrect re-assembly may result in a risk of electric shock or fire.
Battery Safety
WARNING: Follow all of the battery manufacturer’s safety recommendations when working with or
around battery systems. DO NOT smoke or introduce a spark or open flame in the vicinity of a battery.
Some batteries generate explosive gases during normal battery operation.
● To reduce risk of arc, connect and disconnect the battery only when the unit is off.
● If it is necessary to remove the battery connections, always remove the grounded terminal from the battery
first.
● Remove personal metal items such as rings, bracelets, necklaces, and watches.
● Always wear rubber gloves, safety glasses, and a rubber lined vest/apron when working near a battery.
● Have plenty of fresh water and soap nearby in case the battery electrolyte contacts skin, clothing, or eyes.
● If the battery electrolyte contacts skin or clothing, wash immediately with soap and water.
● If the electrolyte enters the eye, immediately flood the eye with running cold water for at least ten (10) minutes
and seek medical attention immediately.
● Do not drop metal on a battery. A spark or short-circuit could occur and could cause an explosion.
2
Charger Location
Do not operate this unit in a closed-in area or restrict ventilation in any way.
Do not set any battery on top of this unit.
Never allow battery electrolyte to drip on this unit when reading the specific gravity or filling the battery.
Never place this unit directly above a standard flooded battery. Gases from the battery will corrode and damage
equipment.
● A sealed maintenance free or valve regulated lead acid battery may be placed below this equipment.
●
●
●
●
Check for Damages
Prior to unpacking the product, note any damage to the shipping container. Unpack the product and inspect the
exterior of product for damage. If any damage is observed, contact the carrier immediately. Continue the
inspection for any internal damage. In the unlikely event of internal damage, please inform the carrier and contact
La Marche for advice on the risk due to any damage before installing the product. Verify that you have all the
necessary parts per your order for proper assembly.
CAUTION: Failure to properly file a claim for shipping damages, or provide a copy of the claim to La
Marche, may void warranty service for any physical damages reported for repair.
Returns for Service
Save the original shipping container. If the product needs to be returned for service, it should be packaged in its
original shipping container. If the original container is damaged/unavailable, make sure the product is packed
with at least three inches of shock-absorbing material to prevent shipping damage. La Marche is not responsible
for damage caused by improper packaging of returned products.
Inspection Checklist
Enclosure exterior and interior is not marred or dented.
There are no visibly damaged components.
All internal components are secure.
Printed circuit boards are firmly seated.
All hardware and connections are tight.
All wire terminations are secure.
All items on packing list have been included.
Handling
Use proper equipment for handling. Care must be taken to prevent the equipment from being accidentally tipped
over.
3
Table of Contents
SC3 General Description .......................................................................................................................... 5
Understanding the Model Number ........................................................................................................... 5
1
2
3
Equipment Handling.......................................................................................................................... 6
1.1
Storing the SC3 .......................................................................................................................... 6
1.2
Moving the SC3 ......................................................................................................................... 6
Installation ......................................................................................................................................... 7
2.1
Mounting.................................................................................................................................... 7
2.2
Electrical Connections ............................................................................................................... 8
2.2.1
Input Connections................................................................................................................... 8
2.2.2
Output Connections ................................................................................................................ 8
Operation ........................................................................................................................................... 9
3.1
Initial Setup ................................................................................................................................ 9
3.2
Front Display and Indicators...................................................................................................... 9
3.2.1
Controls ................................................................................................................................ 10
3.2.2
LED Indicators ..................................................................................................................... 10
3.3
3.3.2
Flow Chart................................................................................................................................ 11
Setting Timer ........................................................................................................................ 12
Timer start from 1-24 Hours and default value is 8 hours using UP/DOWN switch. ........................ 12
3.3.3 Cell Selection.......................................................................................................................... 12
4
3.3.4
Current Selection .................................................................................................................. 12
3.3.5
Start/Enter............................................................................................................................. 12
Service ............................................................................................................................................. 13
4.1
Performing Routine Maintenance ............................................................................................ 13
4.2
Troubleshooting Procedure ...................................................................................................... 13
Appendix A: SC3 Specifications ............................................................................................................ 14
Appendix B: SC3 Current draw, Heat loss, and Case size ..................................................................... 15
Appendix D: Manufacturer’s Warranty.................................................................................................. 17
Appendix E: Document Control and Revision History .......................................................................... 18
4
SC3 General Description
The La Marche model SC3 series uses proven high frequency charging with microprocessor controlled SCR
technology and is developed specifically to maintain factory charger on batteries applications. The PWM control
provides the highest reliability that is required for maintaining and recharging batteries. This filtered unit is
designed and built to charge flooded Lead Acid batteries. The SC3 is the perfect solution for maintenance or
conditioning of a single cell within a battery .
Understanding the Model Number
The SC3 model number is coded to describe charger and options that are included. Find the model number on
the nomenclature sticker of the charger. Then follow the chart to determine configuration of your battery charger.
5
1
Equipment Handling
1.1
Storing the SC3
If SC3 is to be stored for more than a few days after delivery, it should be stored within its shipping container.
The location chosen for storage should be within an ambient temperature of -40 to 185° F (-40 to 85° C) with a
non-condensing relative humidity of 0 to 95%. Storage should not exceed 2 years due to the limited shelf life of
the DC filter capacitors when they are not in service.
1.2
Moving the SC3
After careful inspection and upon verification that the SC3 is undamaged, identify the enclosure style and weight
of the SC3 unit. Refer to the table below.
Output Voltage
2.20/4.50/6.75 VDC
Ampere
Rating
5/10 ADC
AC Input
Voltage
120 VAC
AC Input
Draw
(100%
load)
1A
Dimensions
(W x D x H)
7.185” x 5.20” x 12.563”
Weight
Ibs
Kgs
12
5.5
Table 1 – SC3 Weights and Dimensions
6
2
Installation
2.1
Mounting
The SC3 can be wall mounted using four #4 bolts. Install the SC3 using appropriate hardware on the wall.
Figure 1 - SC3 Mounting Dimensions
7
2.2
Electrical Connections
2.2.1
Input Connections
Before beginning any work ensure that all incoming AC supply and DC load wires are de-energized. Verify that no
voltage is present by using a voltmeter at all input and output terminals. Check that the source voltage and
frequency match the charger nameplate specifications. Before connecting the Battery and/or DC loads, it is
recommended to apply AC power and set the configuration for the correct output. Connect the AC power cord to
the nearest outlet. See section 3.3 for the configuration instructions. Once the configuration is set remove AC
cord of the charger.
2.2.2
Output Connections
The SC3 is equipped with Alligator clip-type terminals for the output connections. The positive cable from each
battery should be connected to a separate positive DC output terminal. See figure 2. If the distance between the
charger’s DC output and the battery/load exceeds 6 feet, use the Power Cable Guide in Appendix C to minimize
the voltage drop across the wire distance.
Figure 2 – SC3 Input and Output Terminals
CAUTION: When connecting the DC cables to the battery, be certain the positive terminal of the charger
is connected to the positive battery terminal and the negative terminal is connected to the negative
battery terminal.
8
3
Operation
All equipment is shipped from the factory fully checked and adjusted to factory default settings. Before
connecting the battery check with the battery manufacturer for the correct voltage settings and adjust
the configuration accordingly (refer to section 3.3). Failure to match the charger settings with the
connected battery may damage or shorten the life of the battery.
3.1
Initial Setup
Before starting up the SC3, check and verify that all connections are correct and are tightened securely. Check
that the input voltage and frequency of the power source match the rating of the charger. Plug in AC Power Cord
of the SC3 in order to start up the charger.
3.2
Front Display and Indicators
Close the AC breaker to power on the charger. Upon powering up the SC3, the “AC ON” indicator on the front
panel will illuminate, the LCD will display the Output Voltage & Current as zero with display message “CONNECT
BATTERY”. After the unit has completed the Start-up procedure, the LCD will show the DC output voltage and DC
output current readings with message “CHARGING”.
Figure 3 – Front Panel Display
9
3.2.1
Controls
Up/Down (VOLTS ADJ.) Arrows – The Up and Down arrows is used for increasing or decreasing voltage
setting values / Timer selection / Cell Selection / Current Selection.
TIMER Button – the “TIMER” button is used to “SET/RUN” the timer (1 Hr. -24Hrs #8Hr.) also pressed & hold
for 10 second to switch off the timer.
CELL SELECTION Button – Used to select the number of cells (Single / Two / Three).
CURRENT SELECTION Button – Used to select the current mode (5 AMPS CC / 10 AMPS CC / 5 AMPS MAX /
10 AMPS MAX).
START/ENTER Arrows – Used to run the charger.
3.2.2
LED Indicators
LCD Display – The LCD display shows the output DC voltage and output DC amperage of the SC3 charger at all
times. Chargers modes and different alarm conditions will be displayed if they should occur.
Charging (Green) – The charging LED will illuminate and blink during battery charging.
Timer (Yellow) – The timer LED will illuminate whenever timer is on.
AC On (Green) – The AC ON LED will illuminate whenever AC voltage is present at the single cell charger.
Single Cell (Red) – The Single cell LED will illuminate whenever single cell option is selected.
Two/Three Cell (Red) – The Two/Three Cell LED will illuminate and blink when Two Cell is selected and solid
glow when three cells is selected.
5 AMPS MAX/CC (Red) – The 5 AMPS MAX/CC LED will illuminate blink when CC mode is selected and solid
glow when MAX mode is selected.
10 AMPS MAX/CC (Red) – The 10 AMPS MAX/CC LED will illuminate blink when CC mode is selected and solid
glow when MAX mode is selected.
Charger Fail (Red) – The Charger Fail LED will illuminate and remain solid when the charger is not able to
regulate the output voltage. If charger AC input voltage goes above 155 VAC the Charger Fail LED will
illuminate, “AC MAINS FAIL” and “CHARGER FAIL” will display on the LCD.
5 / 10A MAX. mode: - During this mode the charger follows a constant voltage charge curve with adjustable
output voltage ranges below:
a. SINGLE CELL mode – 2.20V to 2.55V
b.
c. TWO CELL mode- 4.40V to 5.10V
d. THREE CELL mode- 6.60V to 7.65V
5 / 10A C.C. mode- During this mode the charger follows a constant charge curve with maximum of 5 amps or
10 amps.
Caution- Battery voltage should be monitored frequently as voltage from charger could rise to the
following fixed voltages:
a. SINGLE CELL mode- 3.0 Volts
b. TWO CELL mode- 5.50 Volts
c. THREE CELL mode- 8.0 Volts
10
3.3
Flow Chart
For configuration, follow the SC3 flow chart. Use the Up and Down buttons to cycle through the available options
and the Start button to run the charger. See the chart below for the adjustable settings in the calibration mode.
Except timer hours the controller settings will remain stored even in the event of total power failure.
Figure 6 - SC3 FLOW CHART
11
3.3.1 Setting Output Mode
Press UP Button with increasing SET VOLT values.
>2.25V
06.5A
Charging

>2.30V
06.8A
Charging
Press DOWN Button with decreasing SET VOLT values.
>2.25V
06.5A
Charging
3.3.2

Setting Timer
>2.20V
06.2A
Charging
Press Timer button to run timer.
>SET TIMER
8 HOURS
Timer start from 1-24 Hours and default value is 8 hours using UP/DOWN switch.
3.3.3 Cell Selection
Press cell selection Button for selecting No. of cells (Single/Two/Three) using UP/DOWN switch.
>SINGLE CELL
TWO CELL

>TWO CELL
THREE CELL
Pressing the DOWN switch will scroll from SINGLE CELL to THREE CELLS.
3.3.4
Current Selection
Press Current selection button for selecting current mode using UP/DOWN switch.
>5 AMPS MAX
10AMPS MAX

>10 AMPS MAX
5 AMPS CC

>5 AMPS CC
10 AMPS CC
Pressing the DOWN switch will Scroll from 5 AMPS MAX to 10 AMPS CC.
3.3.5
Start/Enter
Press start to run the charger and can also be used for selection.
>0.00V
00.0A
PRESS START TO
RUN THE CHARGER

>2.25V
06.5A
Charging
12
4
Service
All work inside the SC3 should be performed by a qualified electrician. La Marche is not
responsible for any damages caused by an unqualified technician.
Before workings on SC3 charger ensure that the main breaker is at “OFF” position and the AC
power if off. Disconnect the battery from the charger via the battery disconnect breaker at
“OFF” position or manually disconnecting the battery cables. Verify that no voltage is present
by using a voltmeter at all input and output terminals.
4.1
Performing Routine Maintenance
In order for the SC3 to continue to operate properly it must undergo routine maintenance.
The recommended maintenance schedule is listed below:
Yearly
1. Make sure all connections are tight. (make sure the unit is de-energized)
2. Perform a visual check on all internal components.
3. Check front panel meters and LEDs for accuracy.
4.2
Troubleshooting Procedure
Troubleshooting should be performed only by trained service personnel or experienced electricians.
Before setting up any complicated testing, give the unit a general inspection.
Check the following:
1. Check DC output cables, connections, battery type, and number of cells against the unit’s rating.
2. Check unit specifications against customer order.
3. Check input connections, input voltage and breaker/fuse.
4. Check for shipping damage, loose connections, broken wires, etc.
5. Certain failures can be caused by defective batteries; make sure batteries are free from defects.
When calling in for a service inquiry or for troubleshooting assistance, be sure to have all of the
following information on hand:
1. Equipment model number and serial number.
2. The actual AC input voltage.
3. The DC output voltage with the battery.
4. Result of the check of the AC breaker and DC fuses/ breakers.
5. The actual DC output current and voltage, measured with battery and load connected to charger.
13
Appendix A: SC3 Specifications
ELECTRICAL
AC Input
DC Output
Output Filtering
Regulation
LCD Display
Voltage range: 100– 150Vac
Frequency Range: 45-65Hz
5A/10A @ 2.25Vdc
5A/10A @ 4.50Vdc
5A/10A @ 6.75Vdc
Suitable for Valve-Regulated batteries
± 0.5% from no load to full load over the specified input voltage, frequency
and ambient temperature range.
Digital DC Ammeter & DC Voltmeter ± 1% Accuracy
PROTECTION
Current Walk-In
Environmental
Emergency
Restoration
ENVIRONMENTAL
Audible Noise
Operating
Temperature
Storage
Temperature
Relative Humidity
Shock
Vibration
Altitude
Ventilation
The output current will gradually increase after the charger is turned on,
eliminating surges and overshoot
Thermal Protection
The battery charger may be connected to a battery which is heavily
discharged and recharge it without clearing any protective devices.
Less than 65dBA at any point 5 feet from any vertical surface
-4 to 122˚F ( -20 to 50˚C)
-40 to 185° F (-40 to 85°C)
0 to 95% (non-condensing)
The battery charger in its shipping container withstands shock developed
when one edge of the container is dropped six inches while the opposite
edge is resting on the ground, or it is dropped two inches without any
physical damage or degradation of the electrical performance.
The battery charger in its shipping container withstands vibration
encountered in shipping without physical damage or degradation of the
electrical performance.
This battery charger is capable of operation at altitudes up to 3,000 feet at
an ambient temperature of up to +40 degrees C.
The unit should be mounted so that ventilating openings are not blocked
and air entering the cabinet does not exceed 50 degrees C (122 degrees F).
14
Appendix B: SC3 Current draw, Heat loss, and Case size
No. Cell
Single Cell
Two Cell
Three Cell
Operation Mode
Input Voltage
AC Current
5 A CC
120V
0.5
10 A CC
120V
1
5A C.V. Mode
120V
0.5
10A C.V. Mode
120V
1
5 A CC
120V
0.5
10 A CC
120V
1
5A C.V. Mode
120V
0.5
10A C.V. Mode
120V
1
5 A CC
120V
1
10 A CC
120V
1.5
5A C.V. Mode
120V
1
10A C.V. Mode
120V
1.5
15
Appendix C: Power Cabling Guide
Use the following formulas and table to determine proper wire size for minimal voltage drop.
At distances exceeding 6 feet, the DC wire size should be chosen to keep the voltage difference between the
units DC output terminals and the battery at less than 1/2 volt when unit is fully loaded.
SIZE
(AWG)
18
16
14
12
10
8
6
4
3
2
1
0
00
000
0000
AREA
CIR.MILS
1620
2580
4110
6530
10380
16510
26240
41740
52620
66360
83690
105600
133100
167800
211600
SIZE
(MCM)
250
300
350
400
500
600
700
750
800
900
1000
1250
1500
1750
2000
AREA
CIR.MILS
250000
300000
350000
400000
500000
600000
700000
750000
800000
900000
1000000
1250000
1500000
1750000
2000000
Table of Conventions
CMA
= Cross section of wire in circular MIL area
A
= Ultimate drain in amperes
LF
= Conductor loop feet
Max. Amp = Max. Allowable amperes for given voltage drop
AVD
= Allowable voltage drop
K
= 11.1 for commercial (TW) copper wire
= 7.4 for aluminum
Calculating Wire Size Requirements
Calculating Current Carrying Capacity of Wire
Table 4 - Wire Size/Area Table
Example: If the charger being used has a max ampere output of 33A, and 30 loop feet of copper wire cable is
required with an allowable voltage drop of 0.5Volts, the wire size calculation will be.
A= 33, LF= 30, K= 11.1, AV= 0.5
= 21978 or #6 AWG wire
16
Appendix D: Manufacturer’s Warranty
All La Marche Manufacturing Co. equipment has been thoroughly tested and found to be in proper operating condition upon
shipment from the factory and is warranted to be free from any defect in workmanship and material that may develop within
one year from date of purchase. In addition to the standard one (1) year warranty, La Marche warrants it’s magnetics and
power diodes on a parts replacement basis only for one (1) additional year under normal use.
Any part or parts of the equipment (except fuses, DC connectors and other wear-related items) that prove defective within a
one (1) year period shall be replaced without charge providing such defect, in our opinion, is due to faulty material or
workmanship and not caused by tampering, abuse, misapplication or improper installation. Magnetics and power diodes are
warranted for two (2) years after date of purchase. During the last one (1) year of this two (2) year warranty period, the
warranty covers parts replacement only, and no labor or other services are provided by La Marche, nor is La Marche obligated
to reimburse the owner or any other person for work performed.
Should a piece of equipment require major component replacement or repair during the first year of the warranty period,
these can be handled in one of two ways:
1. The equipment can be returned to the La Marche factory to have the inspections, parts replacements and testing
performed by factory personnel. Should it be necessary to return a piece of equipment or parts to the factory, the
customer or sales representative must obtain authorization from the factory. If upon inspection at the factory, the
defect was due to faulty material or workmanship, all repairs will be made at no cost to the customer during the
first year. Transportation charges or duties shall be borne by purchaser.
2. If the purchaser elects not to return the equipment to the factory and wishes a factory service representative to
make adjustments and/or repairs at the equipment location, La Marche's field service labor rates will apply. A
purchase order to cover the labor and transportation cost is required prior to the deployment of the service
representative.
In accepting delivery of the equipment, the purchaser assumes full responsibility for proper installation, installation
adjustments and service arrangements. Should minor adjustments be required, the local La Marche sales representative should
be contacted to provide this service only.
All sales are final. Only standard LaMarche units will be considered for return. A 25% restocking fee is charged when return
is factory authorized. Special units are not returnable.
In no event shall La Marche Manufacturing Co. have any liability for consequential damages, or loss, damage or expense
directly or indirectly arising from the use of the products, or any inability to use them either separately or in combination with
other equipment or materials, or from any other cause. In addition, any alterations of equipment made by anyone other than
La Marche Manufacturing Co. renders this warranty null and void.
La Marche Manufacturing Co. reserves the right to make revisions in current production of equipment, and assumes no
obligation to incorporate these revisions in earlier models.
The failure of La Marche Manufacturing Co. to object to provisions contained in customer's purchase orders or other
communications shall not be deemed a waiver of the terms or conditions hereof, nor acceptance of such provisions.
The above warranty is exclusive, supersedes and is in lieu of all other warranties, expressed or implied, including any implied
warranty of merchantability or fitness. No person, agent or dealer is authorized to give any warranties on behalf of the
Manufacturer, nor to assume for the Manufacturer any other liability in connection with any of its products unless made in
writing and signed by an official of the manufacturer.
17
Appendix E: Document Control and Revision History
Part Number:
Instruction Number:
Issue ECN:
21515 - 7/17
136504
P25-LSC3-1
21497
21497 - 6/17
18
Download PDF
Similar pages