-
4 -
Option: 2. Charging Port "Battery II"
Charging port with full charging current. Use and setting of the charging program according to table 2.
Option: 3. Signalling/Charging Port "
III
" 12 V / 2 A - 3 A
Combined port, which can be used:
As
signalling port
for an indication "mains supply available" or as vehicle engine immobilizer preventing an
engine start, if the power supply of the vehicle is still inserted.
The output
always
supplies
voltage, as soon as mains voltage is supplied to the unit,
also in case of battery
overtemperature/low temperature, overvoltage, silent run function, unit switch in position "Stand by" etc.
Voltage is
not
supplied in case of disconnection because of cell defects or power failure.
For the
3
rd
battery
for support charging and trickle charging of the
vehicle's starter battery
in case of extended
standstill periods and for equalization of the charge for short-term consumer loads, such as interior lighting of
the driver's cabin etc. It is active together with the main charging port I and is not equipped with an own
indicator. The functioning during the charging mode can be recognised by an increasing voltage of the starter
battery.
The output voltage of that 3
rd
output is slightly lower than the output voltage of the main charging ports, and
its average current intensity is limited to approx. 2 A or 3 A. Overcharging of the vehicle's starter battery is
excluded.
The auxiliary charging port of battery
III
may be used or not used, the function of the main charging port of
battery I and II will not be affected, except that the current rate is reduced by the inferior current rate of battery
III
.
Option: Temperature Sensor
(required for LiFePO4 charging program, included in the delivery scope)
Connect the temperature sensor to
the terminals "T - T"
(any polarity).
The temperature sensor controls the
temperature
of
battery
"I".
Ensure that the installation place of the sensor is not influenced by any source of heat (engine heat, exhaust, heater
etc.)!
Lead-Acid, Gel, AGM Batteries:
Installation:
The
thermal contact
of sensor and
battery inside temperature should be well.
Thus, it should be screwed
down to the negative pole or positive pole of the battery. It is also possible to fasten it at the sidewall centre of the battery
casing.
Function:
The temperature-dependent charging voltage of the battery will be adapted automatically to the battery
temperature (automatic temperature equalization).
For this purpose, the temperature sensor measures the battery
temperature. In case of low temperatures (winter operation), the charging voltage will be increased, in order to improve
and accelerate full charging of the weak battery. Sensitive consumers are protected by a voltage limitation in case of very
low outside temperatures.
In case of summery temperatures, the charging voltage is reduced to minimize the load (gassing) of the battery and to
extend the lifetime of gas-tight batteries.
Battery Protection:
In case of excessive battery temperatures (from +50 °C), the charging voltage will be reduced strongly
to the
safety charging voltage
, approx. 12.80 V, for battery protection, and the maximum charging current rate will be
halved (safety mode, LED
"Battery I"
is flashing. Any charging data being recorded hitherto will be kept in memory. Battery
charging is then interrupted, but the supply of possibly connected consumers will be continued by the unit, and the battery
is allowed to cool down. After that, automatic charging is resumed.
The unit recognizes automatically a missing sensor, cable break or short circuit of the sensor cables, as well as unreasonable
measuring values. In that case, it will switch automatically to the usual charging voltage rates of 20 °C / 25 °C being
recommended by the battery manufacturers.
LiFePO4 Batteries:
Installation:
The
thermal contact
of sensor and
inside temperature
of the battery
should be well
. Thus, it should be
screwed down to the
negative pole
of the battery, because in most of the cases, this is the cooler side (the positive pole is
often biased by the exhaust heat of internal fuses of the battery, electronic systems for cell equalization, balancers etc.)
Function:
In case of abnormal battery temperatures, such as < -20 °C, > 50 °C, the charging voltage will be reduced strongly
to the
safety charging voltage
, approx. 12.80 V, for battery protection, and the maximum charging current rate will be
halved (safety mode, LED
"Battery I"
is flashing
). Any charging data being recorded hitherto will be kept in memory.
Battery charging is then interrupted, but the supply of possibly connected consumers will be continued by the unit, and the
battery is allowed to cool down. After that, automatic charging is resumed.
Below 0 °C, the charging current will be reduced more strongly for battery protection,
LED
"Battery
I
" turns off shortly
every 2 seconds and longer charging times can be expected.
If the charging program LiFePO4 had been set, the temperature sensor must be connected for reasons
of battery safety. Otherwise, the unit will not operate, and the LED
"Main Charging"
will be
flashing
!
