Manual Graupner ULTRA TRIO PLUS 16 - 6469 (page 38 of 107) (English, German, French, Italian)

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NiCd-Delta-Peak (-

 Peak)

trigger voltage

This in turn causes the battery voltage to fall slightly (Delta-V). The charger detects and assesses the

voltage decline.It is possible to adjust the sensitivity, or trigger voltage (in mV per cell!) of the automatic

cut-off circuit for Ni-Cd batteries. A practical range of values has proved to be 10 … 30 mV / cell. Higher

voltages often lead to overcharging of the battery, whereas a lower voltage tends to result in premature

termination of the charge process. We recommend that you check the information supplied by your

battery manufacturer, then carry out a series of test charges to establish the optimum value for your

battery. Start with 10mV/cell to avaid overcharging the battery.

The automatic charge termination circuit

(battery full detection) works on the proven

Delta Peak principle (also known as the

Delta-V process), which is already in use

in millions of chargers.

This process analyses the voltage peak of

the charge curve, which indicates with great accuracy when the

maximum charge capacity is reached.When the charge process

is started the battery voltage initially rises continuously, but as

the pack approaches full capacity it begins to heat up.

12. NIMh-programs (Output 1)

A set of convenient charge programs for recharging Nickel-Metal-Hydride batteries, as commonly used

for modelling purposes. When the charge / discharge program is ﬁ nished, the screen displays the name

of the charge program alternating with the message „END“, together with the charge time, the last

(dis-) charge current, the charged-in (discharged) capacity and the battery voltage, and continues to

do so until you disconnect the battery. This information can often give you a useful indication about the

Ni-MH pack’s charge characteristics and capacity, or warn you if the charger has incorrectly assessed

the pack as being „full“.

NiMh automatic program

_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

N i M h - A u t o < 2 . 5 A

DEC

INC

In this program the charger detects the type of Ni-MH battery

connected to it, and adjusts the charge current accordingly to

avoid overcharging the pack.

The maximum charge current can be set before you connect

the battery to be charged.

Never use a maximum charge current higher as the value

described in the battery instruction, never higher as 2C!

Never charge transmitter batteries with more as 2 A! f. e. a 4.2

Ah battery should be limited to max. 4.2 A.

This is done using the INC / DEC buttons; the range available

is 0.1 A to 10 A.

The charge process is terminated auto-matically in accordance

with the values already set for „Ni-MH Delta Peak cut-off

voltage“.

_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

N i C d d V

= 1 0 m V / C

DECINC

cell voltage

charging time

NiMH

AUTOMATIC-

program

NiMH

cycle

program

NiMH

MANUAL-

program

NiMH

discharge

program

NiMH



delta-peak

trigger voltage

MODE MODE MODE MODE MODE

MODE

(2 sek.)

MODE

NiMH

discharge balancing

program

_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

N i C d d e l t a - p e a k -

_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

N i M h a u t o m a t i c

2 sec.

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Graupner ULTRA TRIO PLUS 16 - 6469 Manual

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