GRAUPNER ULTRAMAT 16 Operating Manual page 32

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N i C d c y c l e
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
C : 2 . 5 A D : 1 . 0 0 A
+ -
DEC
INC
ENTER
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N i C d b a l a n c e
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
o f f v o l t =
2
START
sec.
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* * I N F O R M A T I O N * * *
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
B A L A N C E R C O N .
2
sec.
D C H
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
B L C 2 8 : 3 0
D C H
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
N C - 3 . 0 0 A 0 6 . 7 1 7 V
32
NiCd conditioning program
This program is designed to optimise the capacity of a
ENTER
battery, and balance the state of its component cells.At
top right you can set use the INC or DEC buttons to
INC INC
determine whether the conditioning program is to start
or
with a charge or discharge cycle. After this you set the
DEC DEC
number of cycles from 1 to 5 (e.g., if you set three cycles,
the pack will be charged and discharged three times). The
program discharges the battery using the set discharge
C > D 1
current stated on the right of the screen (0.10 ... 5.00 A),
and then recharges it using the charge current (0.1 ...
+ - 8.0 A) shown on the left of the screen. The charge
INC
DEC process is terminated automatically in accordance with
the values already set for „Ni-Cd Delta Peak cut-off
voltage". The discharge cut-off voltage is set in the Ni-Cd
discharge program. The method of reading out the values
for the actual cycle is described in the section „Screen
displays".
NiCd discharge balancing program
The discharge balancing program does discharge and balance
up to 6 cells of a battery pack.
The final discharge voltage for the balancer can be set
c u t
within the range 1.20 ... 1.30 V using the INC or DEC
1 . 2 0 V
button.
The individual cells in a battery should be balanced before
+ -
the pack is charged, to avoid the possibility of individual
INC DEC
cells being overcharged during the charge process. A
battery should always be balanced before being charged
if it has been stored for a considerable period;
connect the balancer plug to the charger to carry this out.
It is also essential that the voltage of each cell in the pack
should be higher than the set balancer final discharge
voltage.
If you wish to obtain maximum battery capacity, the
individual cells should be discharged to 1.20 V a few hours
- but no longer than two hours - before the next charge
process. If the voltage falls below 1.20 V, the battery cells
lose capacity, so the pack must be charged to around
60% capacity before being stored for a protracted period.
0 1 4 2 5
The program discharges the battery pack at a rate of 50
mA ... 5.00 A. Cells with a higher cell voltage are
discharged at an additional current of around 100 mA
(balancing current). The charger terminates the discharge
balance process once all the cells have reached the
balancer final discharge voltage (+0.01 V).