SC320D - Solar panel Projecta - Free user manual and instructions

Product Type	Portable Solar Panel
Model	SC320D
Brand	Projecta
Rated Power (Max)	320W
Solar Cell Type	Monocrystalline Silicon
Efficiency	~22%
Open Circuit Voltage (Voc)	~24V
Short Circuit Current (Isc)	~13.3A
Operating Voltage (Vmp)	~20V
Operating Current (Imp)	~16A
Dimensions (Folded)	1200 x 500 x 35 mm
Dimensions (Unfolded)	1200 x 1000 x 5 mm
Weight	10 kg
Connector Type	MC4 (compatible with standard solar connectors)
Kickstand Material	Aluminum alloy
Weather Resistance	IP65 rated (weatherproof)
Operating Temperature Range	-20°C to 60°C
Warranty	2 years (subject to terms)
Maintenance & Cleaning	Clean with soft cloth and mild soap; avoid abrasive materials
Safety	Built-in bypass diodes to prevent overheating; reverse current protection
Spare Parts & Repairability	MC4 connectors and cables replaceable; contact Projecta support for other parts

Frequently Asked Questions - SC320D Projecta

Can I use the SC320D panel with a 12V battery system?

Yes, the panel's operating voltage (~20V) is suitable for charging 12V batteries when used with a compatible charge controller.

What type of charge controller should I use?

A MPPT charge controller is recommended to maximize energy harvest, as the panel's voltage is higher than battery voltage.

How do I clean the solar panel?

Use a soft cloth with mild soap and water. Avoid abrasive cleaners or high-pressure water to prevent damage.

Is the panel weatherproof?

Yes, it has an IP65 rating, meaning it is protected against dust and low-pressure water jets, but do not submerge.

What is the maximum power output under ideal conditions?

Under standard test conditions (STC), the panel can produce up to 320W.

How do I connect multiple SC320D panels together?

Connect panels in parallel using MC4 branch connectors to keep voltage the same, or in series for higher voltage. Ensure the total voltage does not exceed controller or inverter limits.

Can this panel charge my phone or laptop directly?

No, the panel outputs DC at ~20V. You will need a DC-DC converter or solar generator with USB ports for small devices.

What should I do if the panel is not producing power?

Check connections, ensure the panel is not shaded, and measure voltage at the output. If voltage is zero, the bypass diode may be faulty; contact support.

How to store the panel when not in use?

Fold it carefully and store in a dry, cool place. Avoid stacking heavy objects on top.

Is the frame or glass repairable?

Minor frame damage can be repaired with epoxy, but glass breakage typically requires professional replacement. Contact Projecta for repair options.

USER MANUAL SC320D Projecta

• Please read these instructions completely prior to installation.
• Lead acid batteries can be dangerous. Ensure no sparks or flames are present when working near batteries. Eye protection should be used. If mounting on a vehicle follow all manufacturers' instructions.
• 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. It is recommended to cover the front face of the panel(s) with a soft cloth to block incoming light during installation.
• For use with 12V or 24V (nominal) solar panels.
• For indoor, out of weather use only.
• Do not exceed the total limit of the solar controller:
  P/No. SC320: 20A
  P/No. SC330: 30A

FEATURES

3 STAGE CHARGING

Ideal for deep cycle batteries, SC320 & SC330 deliver 3 stage charging, maximising battery life and performance. The in-built temperature sensor adjusts the output guaranteeing a thorough charge in all conditions.

• Maintains your battery ready for use
• Safe to leave permanently connected
  • Prevents solar over-charge/discharge

PROTECTION

Solar Array Short Circuit

If solar array short circuit occurs, clear it to resume normal charge automatically.

Load Overload

If the load current exceeds the rated current of controller ≥ 1.05 times rated discharge current, the controller will disconnect the load. The cause of the overload must be corrected, it can then be cleared by pressing the switch button.

Load Short Circuit

Full protection against load wiring short-circuit ≥ 2 times rated discharge current. After one automatic load reconnect attempt, the fault must be cleared by restarting the controller or pressing the switch button.

Solar Reverse Polarity

Full protection against solar reverse polarity, no damage to the controller will result. Correct the miswire to resume normal operation.

Battery Reverse Polarity

Full protection against battery reverse polarity, no damage to the controller will result. Correct the miswire to resume normal operation.

Battery Working Voltage Error

If battery voltage does not match controller working voltage, controller will stop working. After correcting the voltage, the failure can be eliminated through pushing the load button.

Damaged Temperature Sensor

If the temperature sensor is short-circuited or damaged, the controller will be charging or discharging at the default temperature 25^ C to prevent the battery damaged from overcharging or over discharge.

Overheating Protection

If the temperature of the controller heat sink exceeds 85^ C, the controller will automatically start the overheating protection and stop the charging and discharging. When the temperature is below 75^ C, the controller will resume to work.

High Voltage Transients

Solar is protected against smaller high voltage surge. In lightning prone areas, additional external suppression is recommended.

Note: The controller has daily automatic fault recovery function which will reduce the manual operation and can intelligently eliminate the fault caused by non-actual hardware failure.

LOW VOLTAGE DISCONNECT (LVD)

LVD will disconnect the DC load before the battery voltage falls too low, preventing damage due to over-discharge. Once the battery is recharged, the DC load will be automatically reconnected.

LOAD CONTROL

The SC320 & SC330 allow you to switch the DC load on/off from the controller without having to physically disconnect the load or appliance. When switched to 'off', the DC load is isolated from the battery ensuring maximum power conservation.

ELECTRICAL PROTECTION

• Short circuit & over current protection
• Reverse polarity protection
• Conformal coated for protection against dust and moisture

INSTALLATION

General Installation Notes

• Be very careful when working with batteries. Wear eye protection. Have fresh water available to wash and clean any contact with battery acid.
• Never short circuit the battery positive and negative terminals, and wires which may cause explosion or fire.
  • Install external fuses/breakers as required.

• Disconnect the solar module and fuse/breakers near the battery before installing or adjusting the controller.

• Confirm that power connections are tightened to avoid excessive heat caused from loose connection.

• Use insulated tools and avoid placing metal objects near the batteries.
• Explosive gases may be present during charging. Be certain there is sufficient ventilation to release the gases.
• Avoid direct sunlight and do not install in locations where water can enter the controller.
• Loose power connections and/or corroded wires may result in resistive connections that melt wire insulation, burn surrounding materials, or even cause fire. Ensure tight connections and use cable clamps to secure cables and prevent them from swaying in mobile applications.
• Only charge the batteries that comply with the parameters of controller.
• Battery connection may be wired to one battery or a bank of batteries. The following instructions refer to a singular battery, but it is implied that the battery connection can be made to either one battery or a group of batteries in a battery bank.
  • Use the following cable & fuses for installation:

SC320: 4.5mm^2 cable. 30A Fuse

SC330: 4.5 ~mm^2 cable, 50A Fuse

WIRING DIAGRAM

1. Connect components to the charge controller in the sequence as shown in the picture below "+"Red and "-"Black. Always power the battery first.
2. After power from the battery, check the battery indicator on the controller, it will be green. If it's not green, please refer to the 'Protection' section of the manual.
3. The battery fuse should be installed as close to battery as possible. The suggested distance is within 150mm.

OPERATION

LED Indicators

Indicator Status Description

Green On Solid Normal	Normal
Green Slowly Flashing In charging	In charging
Green OFF No charge	Charge
Green On Solid Normal	Normal
Green Slowly Flashing Full	Full
Green Fast Flashing Over voltage	Over voltage
Orange On Solid Under voltage	Under voltage
Red On Solid	Over discharged
	Red	Flashing Battery over temperature
Red On Solid Normal	Normal
Red Slowly Flashing	Overload
Red Fast Flashing	Short circuit
Charging, load and battery indicator(red) flashing simultaneously			System voltage error
Charging, load and battery indicator(orange) flashing simultaneously			Controller overheating

Switch Button Function

1. Manual Control ON/OFF of the load.
2. Resume to normal work after the fault is cleared up.

FAULT CODES

Faults Possible reasons Troubleshooting
Charging LED Solar array indicator off during daytime when sunshine falls on solar modules	Check that solar and disconnection correct and	battery wire connections are tight.
Green Battery LED indicator fast than over voltage disconnect the flashing disconnect voltage change to a new controller.(OVD)	Battery voltage higher voltage disconnect the voltage change to a new controller.	Check the battery voltage. If voltage levels are high, solar module immediately and controller.
Battery LED indicators orange	Battery under voltage	Load output is normal. Charging LED indicator will return to green automatically when fully charged.
Battery LED indicators RED color and loads not working	Battery over discharged	The controller cut off the output automatically. LED indicator will return to green automatically when not working.
Load status indicator red and slow flashing	Over load	Remove or cut out the additional load and press the button, the controller will resume after 3 seconds.
Load status indicator red and fast flashing	Short circuit	Clear short circuit and press the button, the controller will resume to work after 3 seconds.
All LED indicators flashing (battery orange indicator flashing)	Temperature of controller too high	When heat sink of the controller exceeds 85°C, the controller will automatically cut input and output circuit. When the temperature reaches below 75°C, the controller will resume operation. Reduce the environment temperature, the power of solar module or the power of the load.
All LED indicators flashing (battery red indicator flashing)	System voltage error	Check whether the battery voltage matches the controller working voltage. Please change to a suitable battery or reset the working voltage. If there is nothing abnormal, please press load button to clear the malfunction.
SOC value incorrect	Wrong battery type selected using the reconfigured profile of the user defined battery type.	Correct the right battery type; Using the configuration of the charging voltage compensation if choosing the user defined battery type and ignore the SOC.

SPECIFICATIONS

Electrical Parameters

Nominal System Voltage	12/24VDC
Max. PV input voltage	50V
Max. Battery Terminal Voltage	34V
Rated Battery Current	SC320: 20A, SC330: 30A
Charge Circuit Voltage Drop	≤0.28V
Discharge Circuit Voltage Drop	≤0.20V
Self-consumption	≤8.4mA/12V; ≤7. 8mA/24V
Temperature compensation coefficient	-3mV/°C /2V (Default)
Grounding	Positive grounding

Battery Voltage Parameters (parameters is in 12V system at 25°C, please use X 2 in 24V system

Control Parameters

Battery charging setting Gel Sealed Flooded User
Over Voltage Disconnect Voltage 16.0V 16.0V 16.0V 9–17V
Charging Limit Voltage 15.0V 15.0V 15.0V 9–17V
Over Voltage Reconnect Voltage 15.0V 15.0V 15.0V 9–17V
Equalize Charging Voltage – 14.6V 14.8V 9–17V
Boost Charging Voltage	14.2V 14.4V 14.6V 9–17V
Float Charging Voltage 13.8V 13.8V 13.8V 9–17V
Boost Reconnect Charging Voltage	13.2V	13.2V	13.2V
Low Voltage Reconnect Voltage	12.6V 12.6V 12.6V 9–17V
Under Voltage Warning Reconnect Voltage	12.2V	12.2V	12.2V
Under Voltage Warning Voltage	12.0V 12.0V 12.0V 9–17V
Low Voltage Disconnect Voltage 11.1V 11.1V 11.1V 9–17V
Discharging Limit Voltage	10.6V 10.6V 10.6V 9–17V
Equalize Duration	– 2 hrs.	2 hrs.	0–3 hrs.
Boost Duration	2 hrs.	2 hrs.	0–3 hrs.

Note:

1. The default battery type is Sealed (AGM). For Gel, Sealed, Flooded battery type, the voltage point is fixed, & can only be modified via the remote control SC300D if purchased separately.
2. User type is the user defined battery type. The default value is the same as sealed type. When modifying it, please follow the below logistic relation:

a) Over Voltage Disconnect Voltage Charging Limit Voltage≥ Equalize Charging Voltage ≥Boost Charging Voltage≥ Float Charging Voltage Boost Reconnect Charging Voltage;
b) Over Voltage Disconnect Voltage Over Voltage Reconnect Voltage ;
c) Low Voltage Reconnect Voltage Low Voltage Disconnect Voltage≥Discharging Limit Voltage;
d) Under Voltage Warning Reconnect Voltage Under Voltage Warning Voltage≥Discharging Limit Voltage;
e) Boost Reconnect Charging voltage Low Voltage Disconnect Voltage.

*Please carefully to select battery type. It will damage battery if the setting is incorrect.

Environmental Specifications

Working temperature	-35°C to +50°C
Storage temperature	-35°C to +80°C
Humidity	≤95% NC
Enclosure	IP30

SC320 Mechanical Specifications

Overall dimension	159.6 (6.28) x 81.4 (3.2) x 47.8 (1.88) mm/inches
Mounting dimension	147 (5.79) x 50 (1.97) mm/inches
Mounting hole size	4.3
Terminal	10mm ^2
Net weight	0.3kg

SC330 Mechanical Specifications

Overall dimension	200.6 (7.9) x 101.3 (3.99) x 57 (2.24) mm/inches
Mounting dimension	190 (7.48) x 70 (2.76) mm/inches
Mounting hole size	4.5
Terminal	10mm ^2
Net weight	0.5kg

WARRANTY STATEMENT

Applicable only to product sold in Australia

Brown & Watson International Pty Ltd of 1500 Ferntree Gully Road, Knoxfield, Vic., telephone [phone], fax [phone], 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.

Distributed by

AUSTRALIA

Brown & Watson International Pty Ltd

Knoxfield, Victoria 3180

Telephone [phone]

Facsimile [phone]

National Toll Free 1800 113 443

NEW ZEALAND

Narva New Zealand Ltd

22–24 Olive Road

PO Box 12556 Penrose

Auckland, New Zealand

Telephone [phone]

Facsimile [phone]