Temperature Sensor Input; Activate Automatic Charging Mode - Elektro-Automatik BC 812-20R Bedienungsanleitung

Handling the device
In „Power Supply Mode", pin 8 is used to switch the
power output off and then on again. In this mode, the
output can be used whether the remote control is active
or not, like an emergency off switch.
Reference is digital ground (DGND).
Caution! If pin „Start/Stop" is already pulled to LOW
when switching to remote control, then the charging
will start immediately.
II. Monitoring the device condition
The outputs are quasi open collector outputs with a 10k
pull-up resistor to Vcc. They work as current sinks. The
maximum input voltage must not exceed 30V and the
maximum input current must not exceed 20mA.
With this, also relays or LEDs can be used to indicate
the status without the necessity to amplify.
Note, that the pins are HIGH when indicating their
dedicated signal. It might be required to invert them
when used to switch a relay or a LED.
Reference is digital ground (DGND).
III. Monitoring voltage and current
The analogue monitoring outputs put out 0...10V which
corresponds to 0...100% of the nominal values.
Reference is analogue ground (AGND).
5.9.4

Temperature sensor input

Instruction Manual
BC 800 R Series
The temperature sensor alters the charging voltage
according to the ambient temperature of the battery, if
placed in proximity, or to the battery surface tempera-
ture if placed directly on the battery.
It is important to only use sensors with 10mV/K. Allowed
temperature range for charging is -15°C...50°C.
The included sensor is a LM335, pin assigment as
shown above. Always connect with correct polarity
according to the wiring scheme.

5.10 Activate automatic charging mode

Note: the automatic charging mode requires swit-
ching the device to remote control. No manual control
possible during remote control. It means, in case the
current limitation „I-Limit" is going to be used, it must
be activated before. The battery type (LEAD ACID etc.)
also has to be selected before.
Automatic charging means
a) the charging will automatically start after the mains
supply is switched on, but only if a battery is connected
and no error is present
b) the charging will automatically start as soon as a
battery is connected to the running charger, but only if
no error is present.
In order to activate this mode, it is required to set
bridges on the analogue interface, which also could
be replaced by switches if manual switching is favor-
ed. Using bridges, the charging procedure can not be
stopped manually.
If the charging is done (green LED of traffic light), ano-
ther battery can be charged.
Attention! In case a the load is connected to the battery
in parallel it may draw current from the charger. A high
current consumption is considered as an empty battery
by the charger and it will change to boost or precharge
mode again, altering the output voltage.
Bottom view
(pin ADJ is not used)
Date: 03-20-2017
EN
25