Start Charging; Stop Charging; Charging With Reduced Current; Parallel Standby Operation - Elektro-Automatik BC 812-20R Bedienungsanleitung

Handling the device

5.4 Start charging

The charging can be started by pressing the pushbutton
„Start / Stop Charging" or by using pin 8 of the analogue
interface. Following errors will prevent the start:
• No battery connected
• Battery voltage too low (LED flashes)
• Battery voltage too high (LED flashes)
• Battery temperature too high (LED flashes)(only with
connected temperature sensor)
• Battery connected with false polarity (LED flashes)
The battery is charged according to the selected battery
profile and according to the charging characteristics
depicted in the figure in section „Charging procedure".
The currently active stage of the charging is indicated
by one of the three LEDs next to the battery level sym-
bols on the front (traffic light).
The charging procedure is also indicated by the signal
„Charging" on the analogue interface.
Note: immediate start, after the last charging has been
stopped manually, is only possible after >30s. This also
applies for a longer mains blackout or manual switch-
off. Short mains blackouts (<5s) are compensated by
device itself, while pausing the charging procedure.

5.5 Stop charging

The pushbutton „Start / Stop Charging" or pin 8 of
the analogue interface are used to stop the charging
immediately at any phase. The output will then be
switched off and no LED next to the battery charging
level symbols will be lit anymore.
Before connecting or disconnecting the battery the
charging must be stopped!

5.6 Charging with reduced current

Batteries with small capacity can be charged with re-
duced charging phase current (30% of normal phase
current) by activating the „I-Limit" feature.
The maximum value of the reduced charging current
is stated on the front plate as „I-limit xA" (next to LED
„Error"). The LED „I-Limit 30%" indicates the activated
current limitation by being permantly on (as long as no
error is present).
The feature can be activated anytime by pressing
the pushbutton „Charging Profiles" for longer than 3
seconds.
Instruction Manual
BC 800 R Series

5.7 Parallel standby operation

Note: only the selection „Power Supply Mode" is sui-
table for parallel standby operation.
The battery charger can be operated in parallel standby
operation during power supply mode (see section 5.8)
and together with another charger being in charger
mode, in order to reproduce the behaviour of an UPS.

5.8 Power supply mode

The battery charger can be used as a power supply with
limited voltage adjustment range. To select the „Power
Supply Mode", use pushbutton „Charging Profiles"
while the output is switched off.
Switching the power output on or off is done by pressing
the button „Start / Stop Charging".
While the output is on, the green status LED indicates
constant voltage (CV, green) operation or the red status
LED indicates constant current (CC, red) operation:
Both operation modes depend on the voltage/current
condition on the output.
The output current is limited to the device's nominal
current and can't be adjusted.
In order to adjust the output voltage with the trimmer
within the given range the output has to be switched on.
Connecting a load should only be done while the output
is switched off. The cross section of the load leads must
match the nominal current of the device.
Note: in „Power Supply Mode", the device also indicates
a battery connected with false polarity by flashing the
error LED.
Note: the manually switchable current limitation I-Limit
can reduce the output current to 30% also in this mode.
Date: 03-20-2017
EN
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