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Protections, Troubleshooting, and Maintenance
Protection Features
Protection
PV Over Current
PV Short Circuit
PV Reverse Polarity
Battery Reverse Polarity
Battery Over voltage
Battery Over discharge
Load Over Current
Protection
Load Short Circuit
Protection
Over Temperature
Protection
Damaged Remote
Temperature Sensor
CCD-0007727 Rev: 06-01-23
The controller will limit charging power to the rated level. Over-sized PV array
will not be able to operate at maximum power point efficiency.
When PV short circuit occurs, the controller will not start charging. Correct it to
resume normal operation.
Warning: Do not short circuit the PV array terminals when the controller
is in active charging mode. This could result in permanent damage to the
controller.
Fully protected against PV reverse polarity, no damage to the controller.
Correct the connection to resume normal operation.
Fully protected against battery reverse polarity, no damage to the controller.
Correct the connection to resume normal operation
Should there be other energy sources to charge the battery, when the battery
voltage exceeds 15.8 / 31.3 (Overcharge protection voltage of
lithium battery equals target voltage plus 0.2V), the controller will stop
charging to protect the battery from overcharging damage.
When battery voltage drops to the low voltage disconnect setting, the
controller will stop discharging to protect the battery from over discharging
damage.
If the load current exceeds the maximum load current rating 1.25 times, the
controller will disconnect the load.
Once the load short circuit happens, the load short circuit protection will
trigger automatically
The controller detects the internal temperature through internal sensor,
when the temperature exceeds the setting value, the charging current will
decrease, and consequently, the controller's temperature; Should controllers
temperature rise and approach over temperature protection threshold, the
controller will stop its operation and resume after temperature lowers/returns
to an acceptable level.
Should the temperature sensor be short-circuited or damaged, the controller
will be charging or discharging at the internal temperature automatically to
prevent the battery damaged from overcharging or over discharged.
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