4 STAGE CHARGING
SMART AUTOMATIC 12/24 VOLT
SOLAR CONTROLLER
P/No. SC220, SC245, SC260
2
IMPORTANT SAFETY INFORMATION
Please read this instruction thoroughly before installing the product.
WARNINGS
• This charger is designed for indoor use only
• Do not disassemble the controller. Take to a qualified person if the unit requires repairing
• Lead acid batteries can be dangerous. Ensure no sparks or flames are present when working
near batteries
• Eye protection should always be used. Never short circuit the battery
• Given sufficient light solar panels always generate energy even when they are disconnected
• Accidental ‘shorting’ of the terminals or wiring can result in sparks causing personal injury or
a fire hazard. We recommend that you cover up the panel(s) with some sort of soft cloth so
you can block all incoming light during the installation. This will ensure that no damage is
caused to the Solar Panel or Battery if the wires are accidentally short circuited
• Always install a battery fuse on each circuit including the solar controller
• Do not reverse connect the wires to the solar panel or battery
MOUNTING THE DEVICE
The Solar Controller is mounted as below.
The quickest and easiest way to mount the unit is to use self tapping screws and mount the
unit via the four screw holes located on the mounting wings, affix to a flat surface.
12/24 Volt
45 AMP
SOLAR CHARGE CONTROLLER
MENU SET
USB
5V Max. 2.4A
Temp.
Sensor
3
FEATURES
• 4 Stage charging ensures the battery is charged to the optimum level (Bulk, Absorption,
Equalisation and Float)
• Advanced MCU control pulse width modulated (PWM) technology, high efficiency operation
• Programmable for Gel, AGM and Conventional lead-acid (WET) Batteries
• Built in regulator to prevent your battery from being overcharged. Overcharging occurs when
the charge voltage is unregulated. This can result in premature battery failure
• In built regulator prevents your battery from being under charged, in the solar energy field,
battery undercharge often occurs, especially on some conventional Lead Acid batteries; the
unit provides an automatic equalization feature for deeply drained conventional Lead Acid
and AGM batteries, as well as provides a cycling automatic equalizing feature every 28 days
• The Smart Controllers can be connected to the battery permanently to keep the battery fully
charged by using a process called “floating”. This means the controller will stop charging
when the battery is full and will automatically start charging the battery as required.
This process will also reduce water loss and help prevent the battery from ‘drying out’
• Protects your battery from discharge at night. Under low light or no light conditions the solar
panel voltage could be less than the battery voltage. The unit contains a special circuit which
prevents current flowing back from the battery and into the solar panel
– LCD display design, dynamically displays device’s operating data and working condition
– Dual USB ports (5VDC/2.4A combined Max output) allow power supply charge for
electronic equipment
• Built-in external battery temperature sensor. Optional sensor probe also available
(P/No. SC3TMP)
• Multi charging protections against reverse polarity, short circuit, over temperature,
over voltage, etc.
• IP Rating: IP30
USB Output
Ports
LCD
Menu
Button
Temperature
Sensor Connection
PV
Terminals
Battery
Terminals
Load
Terminals
Set Button
4
WIRING CONNECTIONS
1. Connect components to the charge controller in the sequence as shown above and pay
particular attention to the “+” and “-”.
Please don’t insert the fuse or turn on the breaker during the installation.
When disconnecting the system, the order will be reversed.
2. Power on the controller, check the LCD screen turns on. If the screen does not power up,
refer to page 9 TROUBLESHOOTING.
Always connect the battery first, in order to allow the controller to recognize the system
voltage.
3. The battery fuse should be installed as close to battery as possible. The suggested distance is
within 150mm.
4. The Smart Controller Range is a positive ground controller. Any positive connection of solar,
load or battery can be earth grounded as required.
NOTE: Please connect the inverter or other load that it has the large start current to
the battery rather than to the controller, if the inverter or other load is necessary.
5
Button Function
MENU Button • Browse interface
• Setting parameter
SET Button • Load ON/OFF
• Clear error
• Enter into Set Mode
• Save data
LCD Display
Status Display
Item Icon Status
Day
Night
PV Array No Charging
Charging
PV Voltage, Current, Power
Battery capacity, in charging
Battery Battery voltage, current, temperature
Battery type
Load ON
Load Load OFF
Load voltage, current, load mode
OPERATION
Button Function
6
BROWSE INTERFACE
NOTE
1. When no operation, the interface will automatically cycle, but the following two interfaces
will not display.
2. Accumulative power zero clearing: Under PV power interface, press SET button and hold on
5s then the value blink, press SET button again to clear the value.
3. Setting temperature unit: Under battery temperature interface, press SET button and hold on
5s to switch to Fahrenheit or Celsius.
FAULT INDICATION
1. When load current reaches1.02–1.05 times 1.05–1.25 times, 1.25–1.35 times and 1.35–1.5 times more
than nominal value, controller will automatically turn off loads in 50s, 30s,10s and 2s respectively
Status Icon Description
Battery over discharge Battery level shows empty, battery frame blink,
fault icon blink
Battery over voltage Battery level shows full, battery frame blink,
fault icon blink
Battery overheating Battery levels show current value,
battery frame blink, fault icon blink
Load failure Load overload
1
,
load short circuit
7
LOAD MODE SETTING
Operating Steps
Under load mode setting interface, press SET button and hold on for 5 seconds until the
number begins flashing, then press MENU button to set the parameter, press SET button
to confirm.
1** Timer 1 2** Timer 2
100 Light ON/OFF 2 n Diabled
101 Load will be on for 1 hour 201 Load will be on for 1 hour
since sunset before sunrise
102 Load will be on for 2 hours 202 Load will be on for 2 hours
since sunset before sunrise
103–113 Load will be on for 3–13 hours 202–213 Load will be on for 3–13 hours
since sunset before sunrise
114 Load will be on for 14 hours 214 Load will be on for 14 hours
since sunset before sunrise
115 Load will be on for 15 hours 215 Load will be on for 15 hours
since sunset before sunrise
116 Test mode 2 n Disabled
117 Manual mode (Default load ON) 2 n Disabled
NOTE: Please set Light ON/OFF, Test mode and Manual mode via Timer 1.
Timer 2 will be disabled and display “2 n”.
BATTERY TYPE
Operating Steps
Under Battery Voltage interface, press SET button and hold on 5s then enter into the
interface of Battery type setting. After choosing the battery type by pressing MENU button,
waiting for 5s or pressing SET button again to modify successfully.
Battery Type
1. Sealed (AGM) 2. GEL 3. FLOODED
(default)
NOTE: Please refer to the battery voltage parameters table for the different battery type.
8
PROTECTION
Protection Conditions Status
PV Reverse Polarity When the battery is correct connecting, the The controller is not
PV can be reversed. damaged
Battery Reverse Polarity When the PV is not connecting, the battery Stop charging
can be reversed.
Battery Over Voltage The battery voltage reaches to the OVD Stop discharging
Battery Over Discharge The battery voltage reaches to the LVD
Battery Overheating Temperature sensor is higher than 65
o
Output is OFF
Temperature sensor is less than 55
o
Output is ON
Controller Overheating Temperature sensor is higher than 85
o
Output is OFF
Temperature sensor is less than 75o Output is ON
Load Short Circuit Load current ≥2.5 times rated current Output is OFF
One short circuit, the output is OFF 5s; Clear the fault:
Two short circuit, the output is OFF 10s; Restart the controller
Three short circuit, the output is OFF 15s; or wait for one
Four short circuit, the output is OFF 20s; night-day cycle
Five short circuit, the output is OFF 25s; (night time>3 hours)
Six short circuit, the output is OFF
Load Overload Load current ≥2.5 times rated current Output is OFF
1.02-1.05 times, 50s, Clear the fault:
1.05-1.25 times, 30s Restart the controller
1.25-1.35 times,10s or wait for one
1.35-1.5 times 2s night-day cycle
(night time>3 hours)
Damaged RTS (Temp. Sensor) The RTS is short-circuited or damaged Charging or
discharging at 25
o
9
TROUBLESHOOTING
Faults Possible reasons Troubleshooting
The LCD is off during PV array disconnection Confirm that PV wire connections are correct
daytime when sunshine and tight
falls on PV modules
properly
Wire connection is correct, 1) Battery voltage is 1) Please check the voltage of battery.
LCD not display lower than 9V At least 9V voltage to activate the controller
2) PV voltage is less than 2) Check the PV input voltage which should
battery voltage be higher than battery’s
Interface Battery over voltage Check if the battery voltage is higher than
blink OVD point (over voltage disconnect voltage),
and disconnect the PV
Interface Battery over discharged When the battery voltage is restored to
blink or above LVR point (low voltage reconnect
voltage), the load will recover
Interface Battery Overheating The controller will automatically turn the
blink system off. But while the temperature
decline to be below 50ºC, the controller
will resume
Interface Over load or Short circuit Please reduce the number of electric
blink equipment or check carefully load
connection
10
SPECIFICATIONS
Item SC220 SC245 SC260
Nominal system voltage 12/24VDC 12/24VDC 12/24VDC
Battery input voltage range 9V–32V 9V–32V 9V–32V
Rated charge/discharge current 20A@55
O
C 45A@55OC 60A@55OC
Max. PV open circuit voltage 50V 50V 50V
Battery type Sealed(Default)/Gel/Flooded
Bulk/Absorption Charging Voltage Sealed:14.4V/ Gel:14.2V/
Flooded 14.6V
Equalize Charging Voltage Sealed:14.6V/ Gel: No/
Flooded 14.8V
Float Charging Voltage Sealed/Gel/Flooded:13.8V
Low Voltage Reconnect Sealed/Gel/Flooded:12.6V
Low Voltage Disconnect Sealed/Gel/Flooded:11.1V
Self-consumption ≤9.2mA/12V;≤11.7mA/24V
Temperature compensation coefficient -3mV/
O
C/2V (25OC)
Charge circuit voltage drop ≤0.29V
Discharge circuit voltage drop ≤0.16V
LCD temperature range -20
O
C+70OC
Working environment temperature -25
O
C+55OC
(Product can work continuously
at full load)
Relative humidity ≤95%, N.C.
Enclosure IP30
Grounding Common Positive
USB output 5VDC/2.4A(Total)
Overall dimension 160 x 95 x 194 x 118.4 x 214 x 128.7
50mm 63.8mm x 72.2mm
Mounting dimension 148x70mm 185x90mm 205x100mm
Mounting hole size Ø4.5mm Ø5mm Ø5mm
Terminals 10mm
2
/8AWG 16mm2/6AWG 25mm2/4AWG
Net weight 0.35kg 0.76kg 1.02kg
Above the parameters are in 12V system at 25
O
C, twice in 24V system
11
NOTES
Distributed by
AUSTRALIA
Brown & Watson International Pty Ltd
Knoxfield, Victoria 3180
Telephone (03) 9730 6000
Facsimile (03) 9730 6050
National Toll Free 1800 113 443
NEW ZEALAND
Narva New Zealand Ltd
22–24 Olive Road
PO Box 12556 Penrose
Auckland, New Zealand
Telephone (09) 525 4575
Facsimile (09) 579 1192
IS369
Issue 05.05.17
WARRANTY STATEMENT
APPLICABLE ONLY TO PRODUCT SOLD IN AUSTRALIA
Brown & Watson International Pty Ltd of 1500 Ferntree Gully Road, Knoxfield, Vic.,
telephone (03) 9730 6000, fax (03) 9730 6050, warrants that all products described in
its current catalogue (save and except for all bulbs and lenses whether made of glass or
some other substance) will under normal use and service be free of failures in material and
workmanship for a period of one (1) year (unless this period has been extended as indicated
elsewhere) from the date of the original purchase by the consumer as marked on the invoice.
This warranty does not cover ordinary wear and tear, abuse, alteration of products or
damage caused by the consumer.
To make a warranty claim the consumer must deliver the product at their cost to the original
place of purchase or to any other place which may be nominated by either BWI or the retailer
from where the product was bought in order that a warranty assessment may be performed.
The consumer must also deliver the original invoice evidencing the date and place of
purchase together with an explanation in writing as to the nature of the claim.
In the event that the claim is determined to be for a minor failure of the product then
BWI reserves the right to repair or replace it at its discretion. In the event that a major
failure is determined the consumer will be entitled to a replacement or a refund as well as
compensation for any other reasonably foreseeable loss or damage.
This warranty is in addition to any other rights or remedies that the consumer may have
under State or Federal legislation.
IMPORTANT NOTE
Our goods come with guarantees that cannot be excluded under the Australian Consumer
Law. You are entitled to a replacement or refund for a major failure and compensation for
any other reasonably foreseeable loss or damage. You are also entitled to have the goods
repaired or replaced if the goods fail to be of acceptable quality and the failure does not
amount to a major failure.
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