BÜTTNER ELEKTRONIK – Batt erie-Control-Booster MT BCB 30/30, MT BCB 40/40, MT BCB 60/40
15
EN
Remarks:
• If consumers with high power consumption need to be operated while driving, which exceed
the device output of the BCB, installation type 4 can be used. For this purpose, the high-load
normally open relay (12 V/100 A – NO) is controlled via the TR output and the high consumer
current can usually flow directly via board battery to an inverter to which, for example an air
conditioning system is connected. In this case, the board battery is no longer charged but only
the consumer is supplied via the high-load relay.
• When using LiFePO
4
batteries, this function is blocked below 0°C!
• The switchover can only work if the BCB is connected directly to the high-load NO relay with
50 cm cables each with the specified cross-sections. The cabling between both batteries with a
cross-section of at least 25 mm
2
is also to be carried out directly on the high-load relay.
• Please check accordingly the alternator output power. This should be at least twice as much as
the consumer consumption!
• When connected to mains, the board battery will be charged and the starter battery be main-
tained in charge with 4 A, 5 A or 10 A, depending the BCB model.
• Please pay attention to the recommended cable cross-sections.
• Set the DIP switch for the operating mode to D+.
Optionally:
• For the additional cabling of starter- and board batteries, charging cable sets are available in
lengths of 2 m, 3 m, 4 m, 5 m and 6 m (MT 22002 – MT 22006) with a cross- section of 25mm
2
with heavy-duty fuse holder and 250 A fuse, as well as a high-load normally open relay 12V /
100A (180 A) (MT 02156) are available (see also manual – inverter for air conditioning 1700 SI-K
– charging cable sets)
• When cabling according to “installati on type 4” in order to realize very high currents,
suffi ciently dimensioned cables must be used. If this is not ensured, there is potenti al
risk of fi re!
• This schemati c is unsuitable for a LiFePO
4
board batt eries: The LiFePO
4
batt ery
always draws as much current as alternator and wiring allows and is consequently
always higher than the power of the BCB!
Bett er: Use a charge booster (Ladebooster) for the corresponding power requirement.
IMPORTANT:
!
!
