Protections, Troubleshooting And Maintenance; Protection - opti-solar SC MPPT series User Manual

User-defined mode
When the controller is set to user-defined mode, the load is turned on by default. Short press the MENU key, the load will
be turned off, press the MENU key again, the load will be turned on.
Note:
1.If the controller turns off the load due to low voltage protection, overcurrent protection, short-circuit protection
or over temperature protection, the load will turn on automatically when the controller recoverys from protection
state,.
2.Please note: Pushing the MENU button can still activate the function of the key, even during of the above four
kinds protection states.

7. Protections, Troubleshooting and maintenance

7.1 Protection

PV Over Current
█
The controller will limit charging power in rated charge power. An over-sized PV array will not operate
at maximum power point.
█ PV Short Circuit
When PV short circuit occurs, the controller will stop charging. Remove it to start normal operation.
█ PV Reverse Polarity
Fully protection against PV reverse polarity, no damage to the controller. Correct the connection to start
normal operation.
█ Battery Reverse Polarity
Fully protection against battery reverse polarity, no damage to the controller. Correct the connection to
start normal operation.
█ Battery Over Voltage
If there are other energy sources to charge the battery, when the battery voltage exceeds 15.5 /
31.0/62.0V, the controller will stop charging to protect the battery from overcharging damage.
█ Battery Over discharge
When battery voltage drops to the setting voltage point of Low Voltage Disconnect, the controller will
stop discharging to protect the battery from over discharging damage.
█ Load Over Current Protection
If the load current exceeds the maximum load current rating 1.25 times, the controller will disconnect
the load.
█ Load Short Circuit Protection
Once the load short circuit happens, the load short circuit protection will start automatically.
█ Over Temperature Protection
The controller detects the internal temperature through internal sensor, when the temperature exceeds
the setting value, the charging current will lower down followed by the decrease of temperature, so as to
control the controller' s temperature rise;when the internal temperature exceeds the setting over
temperature protection threshold, the controller stops working and restores after the temperature is
lowered.
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