Full Product Manual

17
Commander Protections
Protection
Behavior
PV Array Short
Circuit
When PV short circuit occurs, the controller will stop charging.
Clear it to resume normal operation
PV Overvoltage
If the PV voltage is larger than the maximum input open voltage
150VDC, PV will remain disconnected until the voltage falls
safely below 145V. PV voltage cannot be too high, otherwise it
may damage the controller.
PV Overcurrent
The controller will limit the battery charging current to the
maximum battery current rating. Therefore an over-sized solar
array will not operate at peak power.
Load Overload
If the current exceeds the maximum load current rating 1.05
times, the controller will disconnect the load. Overloading must
be cleared up by reducing the load and restarting the controller.
Load Short Circuit
Fully protected against the load wiring short-circuit. Once the
load short (more than quadruple rate current), the load short
protection will start automatically. After 5 automatic load
reconnect attempts, the faults must be cleared by restarting the
controller.
PV Reverse Polarity
The controller will not operate if the PV wires are switched. Wire
them correctly to resume normal controller operation.
Battery Reverse
Polarity
The controller will not operate if the battery wires are switched.
Wire them correctly to resume normal controller operation.
Over-Temperature
If the temperature of the controller heat sink exceeds 85
O
C, the
controller will automatically start the protection and recover
once conditions are below 75
O
C