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Robbe Futaba FX-32 Manual

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Forthisreason itisimportanttoensurethatalllinkages are
free-moving,andthattheservosarenotmechanicallyimpeded
atanypointintheirtravel..
When the receiver battery is discharged, the transit speed of
theservosdiminishesmarkedly.Ifyoushouldnoticethis,cease
operationsimmediately,andrechargethereceiverbattery.
Note:
A receiver battery low voltage alarm can be set up using the
telemetry function. This warning threshold allows the user to
readoffthebatteryvoltagedirectlyonthetransmitterscreen.
Recommendedsettingsforthewarningthreshold:
NC=1V/cell
NiMH=1.1V/cell
LiPo=3.3V/cell
Incoldconditionsthethresholdsshouldbesetslightlyhigher:
by0.1VpercellforNC/NiMHbatteries,and0.2Vpercellfor
LiPobatteries.
Charging the transmitter battery
The following methods are possible:
•Usingthecigarlighteradapterwitha12 V car battery / 12 V
DCmainsPSU,
•  O rusingthemainsadapter(110...230VAC)connectedtoa
mains socket.
•Inserttheplugintothe12VLithiumcharger.
•TheredmonitorLEDlightsup.
•Locatethechargeleadattachedtothe12Vchargerandcon-
nect it to the transmitter.
•ThechargemonitorLEDlightsupredtoindicatethatcharging
isinprogress.ThechargecurrentisaroundtwoAmpere.
• When the charge process is virtually complete (90%), the
colourofthechargemonitorLEDchangestogreen.Thebattery
cannowbedisconnectedfromthecharger.IftheFX-32battery
(Art.No.4846)isinitiallyinthedischargedstate,thisprocess
takes about 2 hours and 30 minutes.
•Afteraboutvehourstheremainingcharge(100%)iscom-
plete.ThechargemonitorLEDcontinuestoglowgreen.
Caution:
The FX-32 battery (Art. No. 4846) features an integral equa-
lizer / protective circuit with several features, one of which
is to prevent overcharging of the cells. However, to save
energy the battery should be disconnected from the char-
ger after a maximum of eight hours.
The battery must always be charged using the charger
included in the set! Chargers such as the Power Peak Infi-
nity or similar units are not suitable, as these devices are
designed for batteries with high cell-counts. They generate
a very high voltage at the cut-off point, and this could ruin
the battery protection circuit.
        
(around 0.2% per day), and they can therefore be stored for
long periods without difficulty.
After approximately five months, or when their voltage
falls to 2.5 V / cell, they must be recharged. It is essential
to avoid deep-discharging, as this causes permanent cell
damage which results in permanent capacity loss (the elec-
tronic protection circuit cannot prevent this). LiPo batteries
should be charged up to at least 50% of full capacity before
any protracted period of storage.
OPERATING TIMES:
Thetransmitter's operating timeis around nineto ten hours
whenttedwiththefullychargedtransmitterbatterysuppliedin
theset(3400mAh).
Theoperatingtimeforthereceiverbatteryvariesgreatlyaccor-
ding to the number of servos connected to the receiver, the free-
domofmovementofthelinkages,andthefrequencyofcontrol
movements. When the servo motor is running, a servo draws a
currentof150to600mA;whenthemotorisidlingthecurrentis
around5-8mA.
Oncetheservoreachesthepositioncorrespondingtothetrans-
mitterstickposition,themotorswitchesoffandtheservothen
drawsonlytheidlecurrent.Itmakesnodifferencewhetherthe
servoisatcentre,oneend-point,oranyintermediateposition.
General
4.13 RC CHARGER, CHARGING THE TRANSMITTER BAT-
TERY
TheRCchargerincludedinthesetissuitableforcharging7.4V
Lithiumbatteries,andfeaturesanautomaticvoltage-regulated
cut-offcircuit(8.4V).Thechargecurrentisapproximately2A.
… 10 …


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