12/24 VOLT AUTOMATIC
SOLAR CHARGE CONTROLLER
P/No.s SC320 & SC330
WARNING
•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.
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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.
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