Introduction; Function; The Charging Process Explained - Bailey Approach Autograph Series Owner's Manual

Truma Solar Dual Battery Charger

Introduction

The solar module/panel generates power
when light is cast upon it. The full voltage is
also available even if there is little light. The
solar automatic charger only serves to charge
12v (24v) lead accumulators comprising 6 (12)
single cells with a capacity of 50-100Ah (SDC 10)
or 50-200Ah (SDC 20) (e.g. leisure battery). The
preferred application fields for the automatic
charger are batteries with gel, AGM (Absorbed
Glass Mat) or liquid electrolyte.

Function

The device has a modern microprocessor-
controlled pulse width modulated three phase
charging characteristic.
performance combined with a light weight and
small dimensions. By virtue of the high-quality
electronics, it works highly efficiently. The
automatic charging process preserves the
device and does not overcharge the batteries.
This in turn extends the service life of the
batteries significantly. It is suitable for batteries
with liquid, gel or AGM technology and has
a settable charging current distribution for
two separate battery connections. The device
is designed for continuous operation and
parallel mode. Consumers can be continuously
connected, switched on or disconnected.
Consumers are supplied and the batteries are
charged at the same time. The consumer current
here should be smaller than the solar charging
current as otherwise the battery will not
charge. If the device is operated in conjunction
with an external temperature sensor for the
supply battery (battery 1), the device regulates
the charging voltage automatically depending
on the battery temperature. This ensures
particularly effective and gentle charging of the
battery. If an external temperature sensor is not
used, the device regulates the charging process
based on the internal temperature sensor.
The leisure and starter batteries can be charged
by connecting one or several solar modules.
CAUTIONS:
maximum
consumption values.
This allows high
Please observe the
voltage and power

The Charging process Explained

The device has an electronic reverse voltage,
reverse current and
protection. The charging current is only
released (see "charging diagram") if the battery
is connected correctly and there is enough
power available from sunlight.
When a temperature sensor is used, charging
takes place on a temperature-dependent basis.
Bulk phase
Charging with maximum
charging current until the charging end voltage
is reached.
Absorption phase
The charging current is kept for a period of 2
hours. At the end of this period, it changes to
the float phase.
Float phase
The charging voltage is set to 13.8 V. The
charging current drops to the value necessary
to compensate the self-consumption of the
battery. Power is still supplied to the consumers.
If the consumed current exceeds the available
solar charging current, the charging process can
no longer be maintained. If the battery voltage
drops below 13.3 V, the device automatically
switches to the bulk phase, if there is adequate
solar charging current.
Equalisation charging phase
NOTE: Only for AGM and liquid
electrolyte battery type
The equalisation charging phase serves to
compensate the cell voltages and can reduce
any sulphation. If the voltage of the battery
drops below 11.1 V, it is assumed that the battery
has deep-discharged. The device is switched
to the equalisation charging phase for two
hours. At the end of this period, it changes
automatically to the float phase.
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solar short-circuit
available solar