Back Up And Buffer Mode; Faults - Bosch BAT 430 Manual Original

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4.5

Back up and buffer mode

The output voltage from the BAT 430 is a flat d.c. volt-
age and is therefore suitable for backing up the vehicle
electrical system after removing the vehicle battery.
In buffer mode, the BAT 430 maintains the battery
charge level if consumers need to be supplied with
power when the engine is stopped.
The BAT 430 provides two power levels for these func-
tions:
R
12.0 Volt / 24,0 Volt and maximum 2 Amp (yellow
LED flashing) and
R
13.5 Volt / 27,0 Volt and maximum 30 Amp (yellow
LED constantly lit).
i
At both power levels, the charger does not supply
power to the charging clips until a battery voltage
with correct polarity has been detected.
The weaker power setting (2 A) for the back-up mode is
reached by switching on the BAT 430 without connect-
ing it to a battery. The terminal clips are not connected
to the battery until after it has been switched on.
The stronger power setting (30 A) for the buffer mode
is reached by connecting the terminal clips before
switching on the BAT 430, where a battery voltage of
higher than 11.5 Volt / 23 Volt is present.
!
The power setting that is already effective remains
active even when the terminal clips have been dis-
connected.
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1 689 979 996 2012-10-24
4.6

Faults

BAT 430 does not function after turning on (red LED
does not function):
¶
Disconnect the mains connector and check the
mains supply and the mains lead.
Red LED flashes after connecting the battery:
¶
Check the polarity of the battery. The red clip must
be connected to the positive pole (+) of the battery
and the black clip to the negative pole (‒).
¶
Overload: The maximum current values for buffer and
back up mode have been reached. The red LED stops
flashing when the overload has been eliminated.
If the changeover switch for the battery temperature or
the controller for the battery capacity is adjusted dur-
ing charging, charging is discontinued and the red LED
flashes.
¶
After pressing the start button, adjustment is only
possible within 60 seconds.
¶
Pressing the start button again restarts charging
with the current settings.
Robert Bosch GmbH