BÜTTNER ELEKTRONIK – Batterie-Control-Booster MT BCB 30/30, MT BCB 40/40, MT BCB 60/40
18
Note
i
The use of the sense wiring is the
more important the higher the
charging power of the BCB and the longer
the cables need to be ! Connection must
be made directly to the poles of the board
battery ! If the battery banks are connec-
ted in parallel, connect crosswise!
Without sense wiring, cable breaks or fuse
defects, it will be switched normal operati-
on with charging cable compensation, i. e.
calculated compensation of the voltage
losses on the charging cables within the
values of table 1.
TR: Signal output for switching a
• relay – normally open (NO) while driving
in booster operation after installation
type 4 (DIP 6 – setting D +) or a
• high-load relay (NC) of EBL installation kit
(MT 93080) Installation type 3a for mo-
torhomes with originally equipped cent-
ral electric (DIP 6 – setting V)
CI Bus (option): Adaptation for the caravan
industrial bus system to display all relevant
data on a board control panel.
Depending on the configuration of the CI-
BUS on-board system, the functions “AC
Power Limit” (mains operation) and / or
“Limit II” (charging booster operation) can
be managed.
The BCB must be integrated into the CI-BUS
on-board system of the recreational vehicle
manufacturer, installation partner or a
system integrator!
D+: Control input from the alternator for
booster operation on/off
Connect terminal D+ directly with the
control signal of the vehicle. Preferably
the vehicle D+ signal generated from the
active alternator should be used. In the
case of E6 engines, the D+ signal will not
be present in the vehicle and the “Ignition
ON” signal (terminal 15) can be used to
control the device.
Caution: If the ignition key is switched on
but the engine not running, there is a po-
tential risk to discharge the starter battery!
Tip
i
Use D+ Aktiv Simulator (MT 02159)!
BMS: Optional control input from the
battery management system of a LiFePO
4
battery with 2 different functions depen-
ding on slide switch A/B:
Position A:
The control input can be connected to a
charging stop/warning/error switching out-
put of a LiFePO
4
battery. The battery is thus
able to prevent continued charging and to
reactivate it at any time. Depending on the
type of battery, the input can be set to a
battery signal “active 12 V” (high signal)
or “active 0 V” (low signal) and only active
when a LiFePO
4
battery type is set-up. A
more detailed description of the function
can be found in “4.2. Configurations and
functions – DIP 8”
Position B:
A signal from an external control system or
from a switch activates the storage mode
charge function for LiFePO
4
batteries on
the BCB.
Leave the terminal free when not in use or
with lead-acid / Gel / AGM batteries
Ntz: (Mains): Signal output if mains voltage
(shore power) is present (option): A 12 V
signal is supplied to this terminal as soon as
the BCB is connected to the mains. It can be
used for control and display purposes.
