Manual Robbe Futaba FX-40 (page 97 of 105) (English)

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Speed governor settings

FX-40

19.11 SPEED GOVERNOR SETTINGS

This function enables you to adjust the settings of a speed

governor (r

egulator) from the transmitter. The nominal value of

the governor can be entered in the form of a percentage value,

and a switch can be programmed for setting the nominal rota-

tional speed to any of three values (Rate 1, 2 or 3). As with

many functions, it is also possible to determine whether the

settings are to apply to all flight modes (Glob) or only to the

currently activated flight mode (Sepa). A transmitter control

can be assigned for fine-tuning this function.

When you activate the ‘Speed Gov’ function, the screen looks

like this:

The menu features three identical levels which are used to

enter three different gain levels (Rates 1 - 3). This function

must first be activated in the Status line in the usual way by

marking the appropriate field; the field then switches to ‘OFF’

or ‘ON’, according to the physical position of the switch.

In the ‘Rate’ column you can enter the percentage value for

the nominal rotational speeds 1, 2 and 3 by marking the field

and entering the setting using the arrow buttons. The adjust-

ment range is from ‘Off’ via 0% to 110%. The default setting is

50%; pressing the ‘Reset’ button restores the default setting.

A switch can be defined in the ‘Switch’ column using the stan-

dard procedure: mark the appropriate field and define the des-

ired switch and its direction of operation in the switch select

menu which then appears. The default setting is ‘NONE’; at

this setting the governor operates at the nominal rotational

speed set on the unit itself. The effects and method of setting

the ‘Glob’ or ‘Sepa’ mode have already been described; the

function is programmed in the ‘Mode’ column.

If you wish, you can change the unit for rotational speed dis-

played on the screen. The two options are a percentage value

and a direct rotational speed (rpm). To change this, simply

mark the right field in the first line; the change takes effect

immediately.

A separate frame is available for each speed, in which you can

carry out fine-tuning. The first step is to select a transmitter

control in the time-honoured fashion: mark the appropriate

field and define the transmitter control or switch you wish to

use in the select menu which subsequently appears.

When you have marked the column of the corresponding field,

you can use the arrow buttons to enter the fine-tuning rate.

The adjustment range is 0% to 20%, or between 0 and 200

revolutions (rpm). If you need to reverse the direction of effect,

mark the field containing the prefix, which then changes from

‘+’ to ‘-’; the fine-tuning then works in the opposite direction to

the previous setting.

On the right side of the screen you will find a separate field

(Set GOV) in which you can calibrate the rotational speeds in

the transmitter to those of the GV-1 speed governor. Activate

the speed pre-set (Rate 1, 2 or 3) for which you wish to carry

out the calibration, then select the rotational speed display

which is closest to the desired speed, and mark the corres-

ponding field; three speeds (1000 rpm, 1500 rpm and 2000

rpm) are available for this. The pre-set is now displayed in bra-

ckets in the ‘Rate’ column. You must now switch the GV-1

speed governor to set-up mode, and set the same nominal

speed on the unit. The two displays are now calibrated in the

same way.

This screen shot shows a typical example of completed pro-

gramming for a speed governor.

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Robbe Futaba FX-40 Manual

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