29
5 Protections, Troubleshooting & Maintenance
5.1 Protections
PV Over Current
The controller will limit charge power in rated charge power. An over-sized PV
array will not operate at maximum power point
PV Short Circuit
If the PV array short circuit, the controller will stop charging, clear it to resume
normal operation.
PV Reverse Polarity
Fully protection against PV reverse polarity, correct the wire connection to
resume normal operation.
WARNING:
Controller will be damaged when the PV array reverse
polarity and the actual operation power of the PV array is 1.5 times
greater than the rated charge power!
Battery Reverse Polarity
Fully protection against battery reverse polarity, correct the wire connection to
resume normal operation.
Battery Over Voltage
When the battery voltage reaches to the set point of Over Voltage Disconnect
Voltage, the controller will stop charging the battery to protect the battery from
being over charged to break down.
Battery Over Discharge
When the battery voltage reaches to the set point of Low Voltage Disconnect
Voltage, the controller will stop discharging the battery to protect the battery
from being over discharged to break down.
Battery Overheating
The controller detects the battery temperature through the external
temperature sensor. If the battery temperature exceeds 65ºC, the controller
will automatically start the overheating protection to stop working and recover
below 50 ºC.
