Charging
Curve
Bulk: This is the first charging stage where the battery at low charge stage, typically 10%, receives the majority of its
charge. During this stage the battery brought to about 95% of its charger getting 100% of the available solar power.
Pulse (Maintenance): At the end of bulk stage, typically when the battery reach 14.4 Volts, a maintenance mode
starts where the battery voltage can float between an high and low value fixed by the controller. These values are
temperature compensated in order to keep the battery at 100% charge stage in any condition.
Protection functions
Overcharge protection
Deep discharge protection
Battery under voltage protection
Solar panel reverse current protection
The following installation faults do not destroy the controller. After correcting fault, the device will continue to
operate correctly:
Overcharge protection
Deep discharge protection
Reverse polarity protection of load, panel and battery
Automatic electronic fuse
Short circuit protection of load and
panel
Over voltage protection at panel input
Open circuit protection without battery
Reverse current protection at night
Overload protection
Battery over voltage shutdown
Maintenance
The controller is maintenance-free. We strong suggest that all components of the PV system must be checked at
least annually,
Ensure adequate ventilation of the cooling element
Check the cable strain relief
Check that all cable connections are secure
Tighten screws if necessary
Terminal corrosion
5
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