Operating Principle - S.P.E. CBHF2 NA 36V 25A IUIa Wet Manuel D'usage

S.P.E. Elettronica Industriale
TECHNICAL FEATURES OF THE CBHF2 NA 36V 25A
The innovative characteristics of the CBHF2 NA 36V 25A battery charger are the following:
Advanced Mosfet technology with high frequency and insulation transformer.
1.
Charging process fully controlled by microprocessor.
2.
Visualization on a lit display of the charging current, of the battery voltage, of the charging
3.
time, of the electric charge supplied in Ah's and of the electric energy absorbed in KWh's.
Possibility to change the charging curve by means of microswitches (DIP-switches), choosing
4.
from 16 standard pre-programmed curves for lead-acid, Gel and VRLA batteries. Any other op-
tional curve available on request.
Possibility to change the battery voltage and the charging current by means of the relevant mi-
5.
croswitches.
Charging process starting in the "soft start" mode, storing of the data of the cycle just finished
6.
and automatic reset upon connection of a new battery.
Protection against polarity inversions, short-circuits, over-voltages or anomalies by means of
7.
an output relay.
Battery to battery charger connection without sparks on the output terminals with obvious ad-
8.
vantages for the active safety, thanks to the recognition of the battery voltage downstream the
normally opened output relay.
Alphanumeric signals of possible anomalies.
9.
Insensitive charge parameters in case of ±10% network voltage
10.
Efficiency > 85%.
11.
Output ripple at maximum charge lower than 150mV.
12.
Compensation of the voltage drop on the connecting cables to the battery with algorithm inside
13.
the microprocessor.
Start of the charge cycle also with 1V batteries.
14.
Thermal protection against over heating.
15.
An auxiliary relay that permits the partial or total disconnection of an electric traction machine
16.
is available in should the batteries have to be re-charged with the battery charger placed on
board the machine. In this way the relay prevents the machine from starting while the battery
charger is operating. This is a safety device.
On switching on the CBHF2 36V 25A battery charger, programmation data are displayed (these
parameters depend on internal dipswitch configuration).
After the "SPE" logo you can see on display the version of software installed on the machine. At
this time the following programmed parameters are displayed on sequence according to internal
dipswitch configuration (see tables on page n. 3):
battery voltage, charging current, number of charging curve and is displayed the message "GEL"
if programmed charging curve is suitable for gel batteries or "Acd" if programmed charging curve
is suitable for Lead-Acid (Wet) batteries. After these operations the charger is ready to check the
battery voltage and to decide whether to start the charging process. If the battery is not connected
to the battery charger, the message 'bat' will be displayed. The same message is displayed also in
case of negative result of the testing (for example, reversed polarity or battery having a wrong volt-
age). If the result of the testing is positive, the value of the battery voltage is displayed for about 5
seconds, with output relay open. After 5 seconds the charging of the battery can start. The output
relay closes and the current of the first phase rises slowly till it reaches the nominal value pro-
grammed.
If the user disconnects the battery from the battery charger during the charging process, after a
few seconds the battery charger will re-initialize and prepare to start a new charging process.
The display always shows the charging current of the battery. The battery voltage, the time since
the beginning of the charge, the charge yielded in Ah's and the energy consumed in KWh can be
seen only by pressing the button S.
The progress of the charging process is shown by three LED's: red, yellow and green, as in the
whole range of the battery chargers.
The green LED indicates the stop of the charging or the last phase in case of deep charging proc-
ess; in the former case, the relay is opened to disconnect galvanically the battery from the battery
charger.
Technical Department – Research & Development

OPERATING PRINCIPLE

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