Safety Features
PV terminals Battery terminals Load terminals
Reverse polarity Protected Buzzer warning Protected (1)
Short circuit(2) Protected Protected (3) Switches off immediately
Over current --- --- Switches off with a delay (4)
Reverse current Protected --- ---
Over voltage Max. 50 V Max. 50 V Switches off above 15.5/31.0 V
Under voltage --- --- Switches off
Over temperature
Reduces the charging current if overtemperature occurs and switches
off the load if the temperature reaches a high level.
(1) The controller can protect itself, but any connected loads might be damaged.
(2) Short circuit: >4x – 6x nominal current.
(3) The battery must be protected by a fuse, or it might be permanently damaged in case of
short circuit.
(4) >150% nominal current: disconnect within 2min;
>200% nominal current: disconnect within 3s.
WARNING: The combination of different error conditions may cause damage to the controller.
Always remove the fault condition before you continue connecting the controller!
USB connector
USB connector for 5 V supply to small appliances like for charging cell phones, compact
portable computers, small music players; with up to 1500 mA of current consumption.
Warning: Do not connect the charging device anywhere else! USB negative contact is
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