Bedienungsanleitung Graupner Ultramat 12 (Seite 16 von 36) (Deutsch, Englisch, Französisch)

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Pb manual program

In this program you can set the maximum permissible

charge current using the INC / DEC buttons, but only

before you connect the lead-acid battery for charging.

This setting only determines the top limit which the

charger is

permitted to feed to the battery.

If the battery manufacturer states a low maximum charge current, then it is important to limit the

charge current to that value to avoid the charger setting a higher current if the battery appears

to be willing to accept charge.

The battery can then be connected to the charger and the charge process started: the unit

starts charging at 0.00 A and slowly raises the current until it reaches the set limit.

The charger constantly assesses the state of the battery during the charge process, and

adjusts the charge current to suit its condition.

The charge program automatically determines the number of cells (cell count) in the battery by

measuring its overall voltage.

Please do not be surprised if the charger does not deliver the charge current you have selected.

The charge program constantly monitors the battery’s voltage, and limits the current in order to

prevent excessive gassing of the battery.

The ULTRAMAT 12 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.

Pb discharge program

___________ _____

Pb discharge

1.00A 12.0V

DEC

INC

DECINC

ENTER

When the charge process is terminated, the charger

emits audible tones for a certain period. At the same time

the screen also displays the message „END“.

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 (0.10 ... 1.00 A, left of screen) until

its voltage falls to the set final discharge voltage (1.7 ...

12.0 V, right of screen). 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 1.7 V per cell.

___________ _____

CHG 367:09 04448

Pb 0mA 2.147V

END

___________ _____

Pb manual

C:2.5A

DECINC

14. Pb (lead-acid) programs

This program is designed for charging and discharging lead / sulphuric acid and lead / gel

batteries with nominal voltages of

exactly 2, 6 and 12 V (1, 3 and 6 cells).

Caution: the charger will not recognize lead-acid batteries with other nominal voltages, and

such batteries must not be connected to it.

Lead-acid batteries behave entirely differently to Ni-Cd and Ni-MH batteries. Lead-acid batteries

can only deliver relatively low currents relative to their capacity, and similar restrictions very

definitely apply to charging. Manufacturers usually state 14 to 16 hours for achieving nominal

capacity when recharging at the normal charge current. The „normal“ charge current is defined

as one tenth of the battery’s nominal capacity. Example: battery capacity = 12 Ah —> normal

charge current = 1.2 A. In contrast to Ni-Cd and Ni-MH batteries, lead-acid chargers generally

monitor the battery’s voltage in order to determine when it is fully charged.

Caution: lead-acid batteries cannot and must not be fast-charged! Always select the

charge current which the battery manufacturer recommends. Please also bear in mind that

the nominal capacity (i.e. useful life) of a lead-acid battery is very quickly compromised by

incorrect handling, including overcharging, repeated 100% discharges and, in particular, deep

discharging. The magnitude of the charge / discharge currents is also crucial to the actual

battery capacity which can be exploited, i.e. the higher the current, the lower the capacity which

the battery can deliver.

The values selected in the user settings for charge termination delay and safety timer have no

effect in the Pb charge programs.

Lithium type select program

This is actually the most important set-up program for

Lithium batteries. In the Select program you enter the

battery type and battery capacity. It is vital to enter this

information with the greatest care. Check it very thoroughly,

as the charger derives all the other charge parameters from

the settings you enter here.The battery type you select (Li-

Po or Li-Io) affects the charge termination voltage. If you find

that a Lithium battery has unexpectedly been charged only

to the 2/3 full mark, you have probably set the incorrect

battery type at this point.Caution: if you set an incorrect

value at this point, the battery may be damaged irreparably,

and could even explode!

Lithium cell count

___________ _____

***LiPo cells***

2 cells ( 7.73V)

INC

DEC

When you have connected the battery to the charger, hold

the START button pressed in for about two seconds and

the screen will display the cell count of the Lithium pack. If

the pack contains 1 or 2 cells, the charger detects and

sets the number of cells fully automatically. If the pack

contains more than two cells, you may have to adjust the

cell count manually using the INC / DEC buttons, as the

automatic circuit is unable to detect more than three cells

reliably. On the right-hand side you will see the voltage of

the pack connected to the charger. Pressing the START

button again initiates the charge process.

! Caution ! Please take great care to

set the correct cell count. If you make

a mistake, the battery could explode

and burst into flames !

MANUAL-

program

discharge

program

MODE MODE

___________ _____

Lithium type

LiPo

INC

DEC

Graupner Ultramat 12 Seite 16

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