Operation Manual

3736
13. User settings
Initial power-on program
NiCd delta-peak (-
∆∆
∆∆
∆
peak) trigger voltage
________________
________________
NiCd delta-peak-
voltage = 20mV
DECINC
+
-
________________
________________
power-on program
NiCd automatic
DECINC
+
-
You can select the charge program which is to be activated
automatically when the charger is connected to the car batte-
ry. The following charge programs are available: NiCd-
manual, -automatic, NiMH-manual, -automatic, LiIo manual
and Pb-manual, -automatic.
The automatic charge termination cir-
cuit (“battery full” detection) works on
the principle of the Delta Peak process;
this method, sometimes known as the
Delta-U or Delta-V process, has pro-
ved its worth in millions of battery chargers over many years.
The charger monitors the charge curve and assesses the
peak, or maximum point, on the curve. This indicates extremely accurately when the battery is fully
charged.
When a battery is placed on charge, its voltage initially rises continuously; however, when the battery
is full the cells’ temperature rises, and this causes a slight reduction (DV) in the battery voltage. The
charger detects and measures this drop. It is possible to adjust the sensitivity, or trigger voltage (in
mV per cell!) of the automatic termination circuit for NiCd batteries. A practical range has proved to be
10 ... 30 mV / cell. If the trigger voltage is set higher, there is a danger of overcharging the battery; if set
lower, there is a danger of premature termination. We recommend that you carry out a series of test
charges to establish the ideal trigger value for your batteries.
NiMH delta-peak (-
∆∆
∆∆
∆
peak) trigger voltage
________________
________________
NiMH delta-peak-
voltage = 15mV
DECINC
+
-
It is possible to adjust the trigger voltage (in mV per cell!) of
the automatic termination circuit for NiMH batteries. Howe-
ver, compared with NiCd cells NiMH batteries have a less
pronounced voltage drop, and a practical range has proved
to be 5 ... 25 mV / cell. If the trigger voltage is set higher, there
is a danger of overcharging the battery; if set lower, there is a
danger of premature termination. We recommend that you
carry out a series of test charges to establish the ideal trigger
value for your batteries.
Pb capacity test program
Pb discharge program
Pb trickle charge current
________________
________________
Pb capacity
C:2.5A D:2.5A
DECINC
+
-
DECINC
+
-
ENTER
________________
________________
Pb discharge
2.5A 10.8V
DECINC
+
-
DECINC
+
-
ENTER
________________
________________
Pb trickle chg.
current 100mA
DECINC
+
-
The typical purpose of this program is to determine the residual
capacity of a drive battery.
In this program the charger discharges the pack using the set
discharge current (0.1 ... 5.0 A or automatic) until its voltage falls
to the set final discharge voltage (0.5 ... 37.0 V or automatic).
To obtain a realistic capacity reading, i.e. one which actually
reflects the battery’s condition, the discharge current should be
set substantially below 1C (capacity of the battery = 2 Ah —> C
= 2 A), and the final discharge voltage should be set to around
1.55 V per cell.
This program determines the capacity of a lead-acid battery.
The program first charges the battery using the set charge cur-
rent stated on the left of the screen (0.1 ... 7.0 A), and then
discharges it again using the set discharge current stated on
the right of the screen (0.1 … 5.0 A). At the end of the process
the screen displays the battery’s capacity.
The recharge phase exploits the unit’s ability to select and redu-
ce the charge and discharge current and voltage automatically,
as described previously for the Pb manual program.
During the discharge phase the battery is discharged at the
current you have selected. To obtain a realistic capacity reading
the discharge current should not be above 1C (capacity of the
battery = 2 Ah —> C = 2 A).
Lead-acid batteries exhibit slightly lower charging efficiency than
NiCd or NiMH batteries, so you should not be surprised if the
useful capacity of the battery only amounts to 60 to 70% of the
charged-in capacity.
When a Pb charge program is used and the battery reaches the
final charge voltage, the charger automatically switches to mainte-
nance mode, i.e. trickle charging.
In trickle mode the charger automatically reduces the final char-
ge voltage to around 2.2 to 2.3 V per cell, which effectively
prevents excessive gassing of the battery even if it is left on
charge for a fairly long time.
This menu is purely for setting the trickle charge rate, and has no other independent function.
In the final stage the charger automatically continues to charge
the battery at the current set in the menu “Pb - trickle charge
current” until you disconnect it from the charger. During this
period the screen displays the letter “T” instead of the charge
current to indicate that it is trickle charging.
________________
________________
Pb-Man. 226: 13
*T* 03627 7.21
cell voltage
charging time
The screen displays the message “MAX.”, alternating with the reduced charge current to indicate that the
charger is limiting the current.
The ULTRA DUO PLUS 30 now charges the battery using the maximum possible current until its voltage
rises to around 2.3 to 2.35 Volts per cell. The charger then switches to a lower current to bring the battery
gently up to full charge; this process reliably fills the battery “to the brim”.
The unit cuts off the charge process automatically when the battery reaches a voltage of around 2.45 to
2.5 Volts per cell. The effect of the automatic charge current adjustment system is to complete a full charge
safely in much less than the usual 14 to 16 hours.
Initial-
program
NiCd
NiMH
Lithium
Pb
NiCd -
∆∆
∆∆
∆ Peak
- 10 mV
.
.
- 30 mV
NiMH -
∆∆
∆∆
∆ Peak
- 5 mV
.
.
- 25 mV
Car battery
cut-off
- 10,5 Volt
- 11.8 Volt
Button click
-
OFF
-ON
Summer
-
OFF - 10 sec.
- no limit
max.
current
NiCd 0,1... 7A
NiMH 0,1... 7A
Pb 0,1... 7A
MODE
User
settings
MODE MODE MODE MODE MODE
MODEMODEMODE
MODE
NiCd / NiMH
safety
timer
10 ... 300 min.
NiCd / NiMH
charge termin-
delay
AUS,
0...9 min.
MODE
Erase
user
settings
**erased**
Initial
current
NiCd 0,1... 7A
NiMH 0,1... 7A
Lith. 0,1... 9,9A
Pb 0,1... 7A
Akku2 0,05..,0,5A
oder Automatik-Strom