Bedienungsanleitung Robbe Futaba FX-40 (Seite 12 von 105) (Englisch)

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Charging the transmitter

battery

FX-40

NOTES ON HANDLING LITHIUM BATTERIES

• Li-Poly cells feature an extremely low self-discharge rate of

around 0.2% per day

, and for this reason they can be stored

for long periods without problems. However, deep-dischar-

ging must be avoided, as the pack will sustain permanent

damage in the form of loss of capacity if discharged too far.

After about five months of storage, and at the latest at a vol-

tage of 2.5 Volts / cell, it is essential to recharge the pack.

Before any protracted period of storage you should recharge

the battery to at least 50% of nominal capacity. After about

five months the pack should be recharged again.

• The theoretical useful life of a Lithium cell when operated at

low discharge currents is around 500 charge / discharge

cycles.

• Since Li-Poly cells do not suffer from the memory effect (lazy

battery effect), it is not necessary to discharge them before

recharging (cycling, balancing, as required with NC and

NiMH batteries). In fact, it is harmful to discharge first, and

this should be avoided. The capacity of Li-Poly cells declines

slightly with each charge cycle, so prior discharging would

result in premature capacity loss.

RC CHARGER

The RC charger included in the set is suitable for charging 7.4

olt Lithium batteries, and featur

es a voltage-controlled automa-

tic cut-off circuit (8.4 Volts).

The charge current is approximately 2 A.

It can be connected:

• to a 12 V car battery or 12 V DC mains PSU via the cigar ligh-

ter adaptor (supplied);

• or to a mains socket (110 … 230 V AC) using the mains adap-

tor.

During static programming operations it is permissible to charge

the transmitter while it is switched on for programming, as this

extends the transmitter’s operating time. Touching the touch-

screen always switches the backlighting on again briefly.

5.9 LITHIUM TRANSMITTER BATTERY

• Unscrew the back panel from the transmitter.

• Press in the battery r

etainer latch “1” and remove the retai-

ner.

• Place the battery in the transmitter with the printed arrow-

head facing the right. Check that it is straight, then push it to

the right as far as it will go

• Re-fit the battery retainer and engage the latch.

REMOVING / REPLACING THE TRANSMITTER BATTERY

• First switch off the transmitter; this ensures that any settings

you have alter

ed during the current session are stored.

• Disengage the battery retainer, and remove the battery.

• Slide the battery to the left until the contacts are exposed,

then lift the pack out.

Note: never remove the battery from the transmitter when the

monitor LED is still flashing yellow

This could r

esult in loss of memory data or damage to memory

modules.

If this should occur, you will see the screen message “Backup

Error” next time you switch the transmitter on. Do not use the

transmitter if you see this message; send it to the robbe Service

Centre for checking.

The battery pack is fitted with an internal electronic protective

circuit which to a large extent prevents overcharging, low-volta-

ge and short-circuit problems. For this reason the battery is only

suitable for use in the FX-40 transmitter.

CURRENT DRAIN / OPERATING TIMES

The LT4F5000 Lithium transmitter battery has a capacity of 5000

mAh. The curr

ent consumption of the transmitter varies consi-

derably accor

ding to the length of time the LCD screen back-

lighting is used, as this draws a significant current.

• Transmitter with RF section operating, without screen back-

lighting: approx. 450 mA = approx. 8 … 10 hours;

• Transmitter with RF section operating and screen backligh-

ting on: approx. 750 mA = approx. 5 … 6 hours.

The low-voltage alarm sounds when the residual capacity dis-

play falls to 19%. If this should happen, cease using the trans-

mitter immediately and recharge it.

For longer operating times we recommend that you purchase a

reserve battery

We suggest that you set the power

-on time for the screen back-

lighting to about 30 seconds, as this maintains long operating

times for the transmitter.

Most of the time you are using the transmitter the screen back-

lighting will not be required, as the display is clearly legible even

in daylight.

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Robbe Futaba FX-40 Seite 12

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