Protections, Troubleshooting And Maintenance; Protection - Epever Tracer2206AN User Manual

4. Protections, Troubleshooting and Maintenance

4.1 Protection

When the charging current or power of the PV array exceeds its rated current or power, it will be charged at the rated current or
PV
power.
Over
NOTE: When the PV modules are in series, ensure that the open-circuit voltage of the PV array does not exceed the
Current/power
"maximum PV open-circuit voltage" rating. Otherwise the controller may be damaged.
PV Short Circuit When not in PV charging state, the controller will not be damaged in case of a short-circuiting in the PV array.
When the polarity of the PV array is reversed, the controller may not be damaged and can continue to operate normally after the
polarity is corrected.
PV Reverse Polarity
NOTE: If the PV array is reverse connected to the controller,1.5 times rated controller powr (watts)from the PV array, will
damage the controller.
Night Reverse
Prevents the battery from discharging through the PV module at night.
Charging
Battery Reverse Fully protected against battery reverse polarity; no damage to the controller will result. Correct the miswire to resume normal
Polarity operation.
When the battery voltage reaches the over voltage disconnect voltage, it will automatically stop battery charging to prevent battery
Battery Over Voltage
damage caused by over-charging.
When the battery voltage reaches the low voltage disconnect voltage, it will automatically stop battery discharging to prevent
Battery Over
battery damage caused by over-discharging. (Any controller connected loads will be disconnected. Loads directly connected to the
Discharge
battery will not be affected and may continue to discharge the battery.)
The controller can detect the battery temperature through an external temperature sensor. The controller stops working when its
Battery Overheating
temperature exceeds 65 ° C and begins working when its temperature is below 55 ° C.
When the temperature detected by the optional temperature sensor is lower than the Low Temperature Protection
Lithium Battery Low
Threshold(LTPT), the controller will stop charging and discharging automatically. When the detected temperature is higher than
Temperature
the LTPT, the controller will be working automatically (The LTPT is 0 ° C by default and can be set within the range of 10 ~ -40 ° C).
When the load is short circuited (The short circuit current is ≥ 4 times the rated controller load current), the controller will
Load Short Circuit automatically cut off the output. If the load reconnects the output automatically five times (delay of 5s, 10s, 15s, 20s, 25s), it needs
to be cleared by pressing the Load button, restarting the controller or switching from Night to the Day (nighttime > 3 hours).
When the load is overloading (The overload current is ≥ 1.05 times the rated load current), the controller will automatically cut off
Load Overload the output. If the load reconnects automatically five times (delay of 5s, 10s, 15s, 20s, 25s), it needs to be cleared by pressing the
Load button restarting the controller, switching from Night to Day (nighttime > 3 hours).
Controller
The controller is able to detect the temperature inside the battery through an optional remote sensor. The controller stops working
★
Overheating when its temperature exceeds 85 ° C and begins to working when its temperature is below 75 ° C.
The internal circuitry of the controller is designed with Transient Voltage Suppressors (TVS) which can only protect against
TVS High Voltage
high-voltage surge pulses with less energy. If the controller is to be used in an area with frequent lightning strikes, it is
Transients
recommended to install an external surge arrester.
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