Protections - Offgridtec PWM Pro Serie Bedienungsanleitung

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4. Protections

PV Short Circuit: In case of a short circuit on the module the charging process will be stopped

automatically.
PV Reverse Polarity: Full protection from reverse polarity on modules and battery. Make sure

the wiring is done correctly to ensure a proper operation.
CAUTION: Risk of electric shock!
Battery Overvoltage: If the battery voltage exceeds a certain value the charging process is

stopped to keep the battery from being damaged.
Battery Undervoltage (risk of deep discharge): If the battery voltage drops under a certain

value the controller disconnects from the battery to avoid deep discharge.
Battery Overheating: (External temperature sensor needed)

If the battery temperature exceeds 65°C the charging process is stopped automatically. The
controller proceeds after a cool down to 50°C.
Load Overload: If the load current is 1.05 times higher than the load output's rated current the

load will be disconnected. In this case the load must be reduced, and the controller needs to be
restarted. If the fault still occurs after 5 restarts, please reduce the load again and confirm via
the SET button. Restart the controller again or wait for the night-day-cycle (> 3hrs during the
night).
Load Output Short Circuit: In case of a load short circuit clear the fault and restart the

controller.
Damaged Temperature Sensor: In case of a damaged temperature sensor the controller will

proceed charging with an estimated default temperature of 25°.
 Charge Controller Overheating: If the charge controller exceeds a temperature of 85°C it shuts
down automatically and restarts after a cool down to 75°C.
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