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3. Understanding the unit
Caution: This unit is designed for use with
Terminals 1 and 2 are the input port for the solar panel connection.
Terminals 3 and 4 are used for the battery connection. They act as both an output port, for
charging the battery from the solar panel, and an input port for discharging the battery to the
DC loads (if any) through the controller (on terminals 5 and 6).
Terminals 5 and 6 are the output port for the DC loads with a total current draw equal or less
than 30A, such as DC light bulbs and small to medium power DC appliances.
Notes
:
The use of the DC-Load port on terminals 5 and 6, is optional (you can keep them
disconnected). It is useful to provide an automatic Battery Under Voltage Load Disconnect
feature to the DC loads connected there, in an effort to avoid over-discharging the battery
when its state of charge (SoC) condition is getting low.
No external jumpers between each negative terminal are required.
Caution: Connecting DC loads on the terminals 5-6 that can draw either peak or continuous
currents that exceed the maximum rating of 30A, could damage the unit permanently, and that
would not be covered by the warranty. Heavy-duty DC loads, (such as inverters), have to be
connected directly to the battery terminals.
Operating Modes: The unit has the following three operating modes:
Normal Operating Mode: This is the default mode where the unit automatically starts and
eventually returns from other operating modes if no action is performed within 10 sec. It shows
the battery voltage (default) or the current (after pushing whatever arrow button), together with
all the symbols except the ones related to the timers and real time clock (
Unit Setting Mode: This is the mode for setting and editing all the programmable parameters of
the unit. In this mode, only the symbols related with the specific parameter being shown are
displayed, except the battery symbol, which should remain flashing in all the operating modes.
The only way for getting out of this mode and returning to the Normal Operating Mode is waiting
10 sec without touching any push button.
Setting Display Mode: This is the mode for reading the settings without the risk of changing them
accidentally. It is very similar to the Unit Setting Mode (e.g. in regards to the symbols and the
sequence of the parameters) except that the arrows push buttons are used for scrolling up or
down circularly through the settings other than for increasing or decreasing their values.
V or
1
2
3
4
Solar Panel
Battery DC Load
Page 4 of 21
V nominal Battery Systems only
5
6
Chassis Ground
,
, and PM)
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