TECHNICAL MANUAL "SE" (PBM753) Revision no. 1 dd. 01/02/2017
P.B.M. S.r.l. via Barella, Z.I. - VIGNOLA ( MO ) ITALIA Tel. + 39 (059) 7705311 Fax + 39 (059) 7705300
http://www.gruppopbm.ite-mail : pbm@gruppopbm.it file: Manuale SE PBM753 GB rev.1.doc
page 6
FUNCTION SUMMARY TABLE
Jumper
symbol
Function
Description of function
without jumper with jumper
TV Quick test Standard times (*) Accelerated times
CF4 Final charge time Final charge at 3 hours (*) Final charge at 4 hours
AS5s Standard autostart
Manual start
Autostart after 5 seconds (*)
AS3h Delayed autostart Autostart after 3 hours
CPR Proportional charge No proportional charge (*) Proportional charge on
CI11h Safety time Safety timer at 9 hours (*) Safety timer at 11 hours
CEQ Equalisation charge Not programmed Programmed*
* Default setting
CAUTION! : The card checks the setting of the jumpers when it turns on, namely when the charger is
powered by mains. To make modified settings effective with the board powered, the charger must be
disconnected and then reconnected.
CHAPTER 6: DESCRIPTION OF THE CHARGE
Once all connections (mains and battery) have been performed, the electronic card PBM 753 makes a lighting
test of all the leds. After this test just the L1 green led is on “BATTERY CONNECTED” and eventually the
LED L5 if also the equalizing charge is set.
Charging curve
The charging characteristic shown above is made up of the following stages:
Initial charge: performed with decreasing current until a threshold is reached, corresponding to the gassing
voltage set by means of the VGAS trimmer (standard value is 2.4V/cell).
The initial charge may last 9 or 11 hours max (depending on the setting of the CI11H jumper).
If the initial charge is not completed within that time, the safety timer operates and the red L4 LED lights up to
signal a FAULT.
Final charge: begins when the yellow L2 LED (corresponding to a threshold equal to 2,4V/cell) lights up.
It is performed with decreasing current and goes on time-controlled (3 hours as default setting; 4 hours when
the CF4h jumper is inserted).
TIME
100
I (%)
V/el.
2,40 V
2,00 V.
INITIAL CHARGE
MAX 9-11 h
Safety timer
FINAL CHARGE
PAUSE
50
25
EQUALIZATION
2,70 V.
5 impuls
o o o
5 impuls
o o o
5 impuls
o o o
15h
15h
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