Low Voltage Disconnect (Lvd); Load Control; Electrical Protection; Installation - Projecta SC320 Manual

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.
3