GRAUPNER mx-20 Hott, Programming Manual

Page: 73 / 296

73 Detail program description - Base setup model
ON position.
The speed controller or throttle servo will remain in
this cut-off position only until the selected switch is
again changed over followed by a one-time throttle
servo or speed controller movement beyond the preset
threshold with the throttle/brake joystick control.
The factory setting for the left column is -100 % for
the throttle servo "cut-off" position and a threshold of
+150 % servo position setting in the middle column.
SEL
99sec
PPM10
––– cut off +150% –100%
STO
DSC Output
RF Range Test
OFF
BASIC SETTINGS, MODEL
RF transmit
Programming
To change the preset "cut-off" position of the throttle
servo, press the center
SET button in the right touch
pad. The current setting will be displayed in inverse
video. Now use the arrow keys of the left or right touch
pad to set a value at which the motor is reliably "off". If a
combustion motor is involved, be sure the throttle servo
does not perform mechanical runout, e. g. -125 %.
SEL
OFF
99sec
PPM10
––– +150%
STO
–125% cut off
DSC output
RF Range Test
BASIC SETTINGS, MODEL
RF transmit
The – upper – preset value in the middle column
ensures the motor can be stopped, throughout the
maximum possible positioning range of the servo or
speed controller, alone by the switch to be assigned in
the right column.
However, if you wish to set a lower threshold, by which
an underrun will cause the throttle servo or speed
controller with closed switch to switch into the cut-off
position, reduce the preset servo travel from +150 %
by placing the throttle servo or speed controller into
the desired position with the throttle/brake joystick then
press the center
SET button in the right touch pad.
SEL
99sec
PPM10
–––
STO
–125% +100% cut off
DSC output
RF Range Test
BASIC SETTINGS, MODEL
RF transmit OFF
Finally, use the column at the right to specify a
switch with which you can cut off the motor directly
(emergency) or which will be activated by the threshold.
SEL
99sec
PPM10
8
STO
–125% +100% cut off
DSC output
RF Range Test
BASIC SETTINGS, MODEL
RF transmit OFF
Notices:
Be sure the throttle servo does not run out •
mechanically when the cut-off function is activated.
A threshold over +100 % is reached by temporarily
•
increasing the travel for servo 1 in the " Servo
adjustment " menu to over 100 % then, after storing
the threshold, change servo travel back to the
original value.