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Start-up and Function Test:
After connection and configuration of the charging converter, a function test can be performed:
1.
Start the vehicle:
-
The charging converter will be activated (LED "Power" is on) and starts with minimum charging capacity.
2.
Increase the speed of the vehicle to increase the voltage at the STARTER battery until it exceeds the adjusted value for
the "increase of the charging capacity".
-
The charging capacity will be increased and is raised to the maximum value or to the required value of the charging
characteristic line, if the BOARD battery is already full.
Tips:
Unit does not start, the LED "Power" is not lighting:
a.
Check the voltage at the activation input terminal "D+", > 8 V.
b.
In case of pure voltage control (without D+), check the voltage directly on the terminals of the unit. See page 8.
Full charging current is not reached:
c.
BOARD battery is already charged: Turn on devices with high current draw.
Full charging current is not reached, the LED "Power" turns off every 2 seconds:
d.
Check the voltage directly at the ter/- IN 12 V: The voltage must be higher than the
threshold "Increase of the
Charging Capacity".
Increase the engine speed, in order that the charging converter is able to regulate to a higher
voltage.
e.
Check the c/-OUT 12 V BOARD and fuse 1. Check the cross-sections and lengths according to table 1.
f.
Check the cIN 12 V START, fuse 2, cross-sections and lengths (also "minus" connection to chassis), if required,
separate cable of isolated batteries between "-STARTER" and -BOARD battery according to table 1.
g.
Concealed battery cutoff relay (such as in EBL, EVS) bridges the charging converter: Check connection plan.
Operation with EBL, EVS etc.:
h.
The unit changes permanently between active and quiescent condition: "D+" must arrive directly from the vehicle,
and not from the EBL.
Battery Lifetime and Efficiency:
Keep the batteries cool,
LiFePO4
preferably
above 0 °C
. Choose an appropriate location for
installation.
Store only fully charged batteries and recharge them periodically.
Open lead-acid batteries and batteries being "maintenance-free according to EN/DIN":
Check the acid level periodically!
Recharge deeply discharged lead batteries
immediately
!
LiFePO4: Only use batteries with BMS and safety circuit.
Option:
Several Batteries at the Charging Port:
Parallel charging of two or several batteries of the same voltage (12 V) is admissible. For this purpose, the batteries are
connected "in parallel". The capacity values (Ah) are summed up.
The total capacity (total Ah) should not exceed the
indicated maximum battery capacity
(depending on the case of application).
According to the battery manufacturers,
permanent parallel operation
is admissible in case of two or several batteries of
the same voltage, same type (gel/acid/AGM/LiFePO4), same capacity, and of about the same age (history).
Example: Connection in parallel of 2 batteries (cross connection):
Both positive poles must be connected with a large cable. Also, both negative poles must be connected with a large cable.
Now, the supply cables are connected "in cross connection". This connection is beneficial and means
Minus supply cable at negative pole of battery "1".
Plus supply cable at positive pole of battery "2".
This ensures that both batteries "1" and "2" of the system will receive/supply the same voltage.
Option:
Parallel Connection of Two Charging Converters:
An increase of the charging capacity for large battery systems or high loads can be realized by parallel
connection of two identical units. It should be noted that both units must be connected as symmetrically as
possible, with the same cable lengths and cable cross-sections, to achieve identical power performance.
Due to high currents, the required
cable cross-sections
of the power supply connections must be multiplied by
two, or they must be observed when separately installed (table1).
